Add Mercury app #1

Merged
xuu merged 4 commits from mercury into main 2024-06-10 21:13:17 -06:00
54 changed files with 7969 additions and 158 deletions

3
.gitignore vendored Normal file
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@ -0,0 +1,3 @@
test.db
*.mercury
sour.is-mercury

45
cmd/testsql/main.go Normal file
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@ -0,0 +1,45 @@
package main
import (
"database/sql"
"log"
_ "modernc.org/sqlite"
)
func main() {
db, err := sql.Open("sqlite", "./test.db")
if err != nil {
log.Fatal(err)
}
defer db.Close()
_, err = db.Exec(`drop table if exists foo`)
if err != nil {
log.Fatal(err)
}
_, err = db.Exec(`create table foo (bar jsonb)`)
if err != nil {
log.Fatal(err)
}
_, err = db.Exec(`insert into foo (bar) values ('["one"]')`)
if err != nil {
log.Fatal(err)
}
rows, err := db.Query(`select j.value from foo, json_each(bar) j `)
if err != nil {
log.Fatal(err)
}
for rows.Next() {
var s string
err = rows.Scan(&s)
if err != nil {
log.Fatal(err)
}
log.Println("GOT: ", s)
}
}

View File

@ -127,9 +127,6 @@ func (c *cron) run(ctx context.Context, now time.Time) {
case <-timer.C:
}
span.AddEvent("Cron Run: " + now.Format(time.RFC822))
// fmt.Println("Cron Run: ", now.Format(time.RFC822))
c.state.Use(ctx, func(ctx context.Context, state *state) error {
run = append(run, state.queue...)
state.queue = state.queue[:0]
@ -148,6 +145,9 @@ func (c *cron) run(ctx context.Context, now time.Time) {
return
}
span.AddEvent("Cron Run: " + now.Format(time.RFC822))
// fmt.Println("Cron Run: ", now.Format(time.RFC822))
wg, _ := errgroup.WithContext(ctx)
for i := range run {

37
env/env.go vendored
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@ -9,35 +9,16 @@ import (
"strings"
)
func Default(name, defaultValue string) string {
func Default(name, defaultValue string) (s string) {
name = strings.TrimSpace(name)
defaultValue = strings.TrimSpace(defaultValue)
if v := strings.TrimSpace(os.Getenv(name)); v != "" {
slog.Info("env", name, v)
return v
}
slog.Info("env", name, defaultValue+" (default)")
return defaultValue
}
s = strings.TrimSpace(defaultValue)
type secret string
if v, ok := os.LookupEnv(name); ok {
s = strings.TrimSpace(v)
slog.Info("env", slog.String(name, v))
return
}
func (s secret) String() string {
if s == "" {
return "(nil)"
}
return "***"
}
func (s secret) Secret() string {
return string(s)
}
func Secret(name, defaultValue string) secret {
name = strings.TrimSpace(name)
defaultValue = strings.TrimSpace(defaultValue)
if v := strings.TrimSpace(os.Getenv(name)); v != "" {
slog.Info("env", name, secret(v))
return secret(v)
}
slog.Info("env", name, secret(defaultValue).String()+" (default)")
return secret(defaultValue)
slog.Info("env", slog.String(name, s+" (default)"))
return
}

35
env/secret.go vendored Normal file
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@ -0,0 +1,35 @@
package env
import (
"os"
"log/slog"
"strings"
)
type secret string
func (s secret) String() string {
if s == "" {
return "(nil)"
}
return "***"
}
func (s secret) Secret() string {
return string(s)
}
func Secret(name, defaultValue string) (s secret) {
name = strings.TrimSpace(name)
s = secret(strings.TrimSpace(defaultValue))
if v, ok := os.LookupEnv(name); ok {
s = secret(strings.TrimSpace(v))
slog.Info("env", slog.String(name, s.String()))
return
}
slog.Info("env", slog.String(name, s.String()+" (default)"))
return
}

83
go.mod
View File

@ -1,19 +1,21 @@
module go.sour.is/pkg
go 1.21
go 1.22.0
require (
github.com/99designs/gqlgen v0.17.34
github.com/99designs/gqlgen v0.17.44
github.com/golang-jwt/jwt/v4 v4.5.0
github.com/gorilla/websocket v1.5.0
github.com/gorilla/websocket v1.5.1
github.com/matryer/is v1.4.1
github.com/ravilushqa/otelgqlgen v0.13.1
github.com/vektah/gqlparser/v2 v2.5.6
go.opentelemetry.io/otel v1.18.0
go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.18.0
go.opentelemetry.io/otel/sdk/metric v0.41.0
github.com/ravilushqa/otelgqlgen v0.15.0
github.com/tursodatabase/go-libsql v0.0.0-20240322134723-08771dcdd2f1
github.com/vektah/gqlparser/v2 v2.5.11
go.opentelemetry.io/otel v1.23.1
go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.23.1
go.opentelemetry.io/otel/sdk/metric v1.23.1
go.sour.is/passwd v0.2.0
go.uber.org/multierr v1.11.0
golang.org/x/sync v0.7.0
golang.org/x/sync v0.6.0
)
require (
@ -21,39 +23,58 @@ require (
github.com/antlr/antlr4/runtime/Go/antlr/v4 v4.0.0-20230512164433-5d1fd1a340c9 // indirect
github.com/beorn7/perks v1.0.1 // indirect
github.com/cespare/xxhash/v2 v2.2.0 // indirect
github.com/felixge/httpsnoop v1.0.3 // indirect
github.com/hashicorp/golang-lru/v2 v2.0.3 // indirect
github.com/dustin/go-humanize v1.0.1 // indirect
github.com/felixge/httpsnoop v1.0.4 // indirect
github.com/google/uuid v1.6.0 // indirect
github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
github.com/lann/builder v0.0.0-20180802200727-47ae307949d0 // indirect
github.com/lann/ps v0.0.0-20150810152359-62de8c46ede0 // indirect
github.com/libsql/sqlite-antlr4-parser v0.0.0-20230802215326-5cb5bb604475 // indirect
github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
github.com/mattn/go-isatty v0.0.20 // indirect
github.com/mitchellh/mapstructure v1.5.0 // indirect
github.com/prometheus/client_model v0.4.1-0.20230718164431-9a2bf3000d16 // indirect
github.com/prometheus/common v0.44.0 // indirect
github.com/ncruces/go-strftime v0.1.9 // indirect
github.com/prometheus/client_model v0.5.0 // indirect
github.com/prometheus/common v0.47.0 // indirect
github.com/prometheus/procfs v0.12.0 // indirect
go.opentelemetry.io/contrib v1.16.1 // indirect
golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e // indirect
google.golang.org/genproto/googleapis/api v0.0.0-20230711160842-782d3b101e98 // indirect
google.golang.org/genproto/googleapis/rpc v0.0.0-20230711160842-782d3b101e98 // indirect
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
github.com/sosodev/duration v1.2.0 // indirect
go.opentelemetry.io/contrib v1.23.0 // indirect
google.golang.org/genproto v0.0.0-20240213162025-012b6fc9bca9 // indirect
google.golang.org/genproto/googleapis/api v0.0.0-20240213162025-012b6fc9bca9 // indirect
google.golang.org/genproto/googleapis/rpc v0.0.0-20240213162025-012b6fc9bca9 // indirect
modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6 // indirect
modernc.org/libc v1.41.0 // indirect
modernc.org/mathutil v1.6.0 // indirect
modernc.org/memory v1.7.2 // indirect
modernc.org/strutil v1.2.0 // indirect
modernc.org/token v1.1.0 // indirect
)
require (
github.com/BurntSushi/toml v1.3.2
github.com/Masterminds/squirrel v1.5.4
github.com/cenkalti/backoff/v4 v4.2.1 // indirect
github.com/go-logr/logr v1.2.4 // indirect
github.com/go-logr/logr v1.4.1 // indirect
github.com/go-logr/stdr v1.2.2 // indirect
github.com/golang/gddo v0.0.0-20210115222349-20d68f94ee1f
github.com/golang/protobuf v1.5.3 // indirect
github.com/grpc-ecosystem/grpc-gateway/v2 v2.16.0 // indirect
github.com/prometheus/client_golang v1.17.0
github.com/tursodatabase/go-libsql v0.0.0-20240322134723-08771dcdd2f1
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.44.0
go.opentelemetry.io/contrib/instrumentation/runtime v0.42.0
go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.18.0 // indirect
go.opentelemetry.io/otel/exporters/prometheus v0.41.0
go.opentelemetry.io/otel/metric v1.18.0
go.opentelemetry.io/otel/sdk v1.18.0
go.opentelemetry.io/otel/trace v1.18.0
go.opentelemetry.io/proto/otlp v1.0.0 // indirect
github.com/grpc-ecosystem/grpc-gateway/v2 v2.19.1 // indirect
github.com/oklog/ulid/v2 v2.1.0
github.com/prometheus/client_golang v1.18.0
go.nhat.io/otelsql v0.12.0
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.48.0
go.opentelemetry.io/contrib/instrumentation/runtime v0.48.0
go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.23.1 // indirect
go.opentelemetry.io/otel/exporters/prometheus v0.45.2
go.opentelemetry.io/otel/metric v1.23.1
go.opentelemetry.io/otel/sdk v1.23.1
go.opentelemetry.io/otel/trace v1.23.1
go.opentelemetry.io/proto/otlp v1.1.0 // indirect
golang.org/x/exp v0.0.0-20240213143201-ec583247a57a
golang.org/x/net v0.23.0 // indirect
golang.org/x/sys v0.18.0 // indirect
golang.org/x/text v0.14.0 // indirect
google.golang.org/grpc v1.58.3 // indirect
google.golang.org/grpc v1.61.1 // indirect
google.golang.org/protobuf v1.33.0 // indirect
modernc.org/sqlite v1.29.1
)

257
go.sum
View File

@ -1,5 +1,13 @@
github.com/99designs/gqlgen v0.17.34 h1:5cS5/OKFguQt+Ws56uj9FlG2xm1IlcJWNF2jrMIKYFQ=
github.com/99designs/gqlgen v0.17.34/go.mod h1:Axcd3jIFHBVcqzixujJQr1wGqE+lGTpz6u4iZBZg1G8=
cloud.google.com/go v0.16.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
github.com/99designs/gqlgen v0.17.44 h1:OS2wLk/67Y+vXM75XHbwRnNYJcbuJd4OBL76RX3NQQA=
github.com/99designs/gqlgen v0.17.44/go.mod h1:UTCu3xpK2mLI5qcMNw+HKDiEL77it/1XtAjisC4sLwM=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8=
github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
github.com/DATA-DOG/go-sqlmock v1.5.0 h1:Shsta01QNfFxHCfpW6YH2STWB0MudeXXEWMr20OEh60=
github.com/DATA-DOG/go-sqlmock v1.5.0/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
github.com/Masterminds/squirrel v1.5.4 h1:uUcX/aBc8O7Fg9kaISIUsHXdKuqehiXAMQTYX8afzqM=
github.com/Masterminds/squirrel v1.5.4/go.mod h1:NNaOrjSoIDfDA40n7sr2tPNZRfjzjA400rg+riTZj10=
github.com/agnivade/levenshtein v1.1.1 h1:QY8M92nrzkmr798gCo3kmMyqXFzdQVpxLlGPRBij0P8=
github.com/agnivade/levenshtein v1.1.1/go.mod h1:veldBMzWxcCG2ZvUTKD2kJNRdCk5hVbJomOvKkmgYbo=
github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883 h1:bvNMNQO63//z+xNgfBlViaCIJKLlCJ6/fmUseuG0wVQ=
@ -10,6 +18,9 @@ github.com/arbovm/levenshtein v0.0.0-20160628152529-48b4e1c0c4d0 h1:jfIu9sQUG6Ig
github.com/arbovm/levenshtein v0.0.0-20160628152529-48b4e1c0c4d0/go.mod h1:t2tdKJDJF9BV14lnkjHmOQgcvEKgtqs5a1N3LNdJhGE=
github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
github.com/bool64/shared v0.1.5 h1:fp3eUhBsrSjNCQPcSdQqZxxh9bBwrYiZ+zOKFkM0/2E=
github.com/bool64/shared v0.1.5/go.mod h1:081yz68YC9jeFB3+Bbmno2RFWvGKv1lPKkMP6MHJlPs=
github.com/bradfitz/gomemcache v0.0.0-20170208213004-1952afaa557d/go.mod h1:PmM6Mmwb0LSuEubjR8N7PtNe1KxZLtOUHtbeikc5h60=
github.com/cenkalti/backoff/v4 v4.2.1 h1:y4OZtCnogmCPw98Zjyt5a6+QwPLGkiQsYW5oUqylYbM=
github.com/cenkalti/backoff/v4 v4.2.1/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
@ -19,120 +30,195 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dgryski/trifles v0.0.0-20200323201526-dd97f9abfb48 h1:fRzb/w+pyskVMQ+UbP35JkH8yB7MYb4q/qhBarqZE6g=
github.com/dgryski/trifles v0.0.0-20200323201526-dd97f9abfb48/go.mod h1:if7Fbed8SFyPtHLHbg49SI7NAdJiC5WIA09pe59rfAA=
github.com/felixge/httpsnoop v1.0.3 h1:s/nj+GCswXYzN5v2DpNMuMQYe+0DDwt5WVCU6CWBdXk=
github.com/felixge/httpsnoop v1.0.3/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg=
github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U=
github.com/fsnotify/fsnotify v1.4.3-0.20170329110642-4da3e2cfbabc/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
github.com/garyburd/redigo v1.1.1-0.20170914051019-70e1b1943d4f/go.mod h1:NR3MbYisc3/PwhQ00EMzDiPmrwpPxAn5GI05/YaO1SY=
github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
github.com/go-logr/logr v1.2.4 h1:g01GSCwiDw2xSZfjJ2/T9M+S6pFdcNtFYsp+Y43HYDQ=
github.com/go-logr/logr v1.2.4/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
github.com/go-logr/logr v1.4.1 h1:pKouT5E8xu9zeFC39JXRDukb6JFQPXM5p5I91188VAQ=
github.com/go-logr/logr v1.4.1/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
github.com/go-stack/stack v1.6.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
github.com/golang-jwt/jwt/v4 v4.5.0 h1:7cYmW1XlMY7h7ii7UhUyChSgS5wUJEnm9uZVTGqOWzg=
github.com/golang-jwt/jwt/v4 v4.5.0/go.mod h1:m21LjoU+eqJr34lmDMbreY2eSTRJ1cv77w39/MY0Ch0=
github.com/golang/glog v1.1.0 h1:/d3pCKDPWNnvIWe0vVUpNP32qc8U3PDVxySP/y360qE=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/gddo v0.0.0-20210115222349-20d68f94ee1f h1:16RtHeWGkJMc80Etb8RPCcKevXGldr57+LOyZt8zOlg=
github.com/golang/gddo v0.0.0-20210115222349-20d68f94ee1f/go.mod h1:ijRvpgDJDI262hYq/IQVYgf8hd8IHUs93Ol0kvMBAx4=
github.com/golang/lint v0.0.0-20170918230701-e5d664eb928e/go.mod h1:tluoj9z5200jBnyusfRPU2LqT6J+DAorxEvtC7LHB+E=
github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg=
github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
github.com/golang/snappy v0.0.0-20170215233205-553a64147049/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
github.com/google/go-cmp v0.1.1-0.20171103154506-982329095285/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
github.com/gorilla/websocket v1.5.0 h1:PPwGk2jz7EePpoHN/+ClbZu8SPxiqlu12wZP/3sWmnc=
github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
github.com/grpc-ecosystem/grpc-gateway/v2 v2.16.0 h1:YBftPWNWd4WwGqtY2yeZL2ef8rHAxPBD8KFhJpmcqms=
github.com/grpc-ecosystem/grpc-gateway/v2 v2.16.0/go.mod h1:YN5jB8ie0yfIUg6VvR9Kz84aCaG7AsGZnLjhHbUqwPg=
github.com/hashicorp/golang-lru/v2 v2.0.3 h1:kmRrRLlInXvng0SmLxmQpQkpbYAvcXm7NPDrgxJa9mE=
github.com/hashicorp/golang-lru/v2 v2.0.3/go.mod h1:QeFd9opnmA6QUJc5vARoKUSoFhyfM2/ZepoAG6RGpeM=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
github.com/google/pprof v0.0.0-20221118152302-e6195bd50e26 h1:Xim43kblpZXfIBQsbuBVKCudVG457BR2GZFIz3uw3hQ=
github.com/google/pprof v0.0.0-20221118152302-e6195bd50e26/go.mod h1:dDKJzRmX4S37WGHujM7tX//fmj1uioxKzKxz3lo4HJo=
github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/googleapis/gax-go v2.0.0+incompatible/go.mod h1:SFVmujtThgffbyetf+mdk2eWhX2bMyUtNHzFKcPA9HY=
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go.opentelemetry.io/otel/exporters/prometheus v0.45.2 h1:pe2Jqk1K18As0RCw7J08QhgXNqr+6npx0a5W4IgAFA8=
go.opentelemetry.io/otel/exporters/prometheus v0.45.2/go.mod h1:B38pscHKI6bhFS44FDw0eFU3iqG3ASNIvY+fZgR5sAc=
go.opentelemetry.io/otel/exporters/stdout/stdoutmetric v0.40.0 h1:hf7JSONqAuXT1PDYYlVhKNMPLe4060d+4RFREcv7X2c=
go.opentelemetry.io/otel/exporters/stdout/stdoutmetric v0.40.0/go.mod h1:IxD5qbw/XcnFB7i5k4d7J1aW5iBU2h4DgSxtk4YqR4c=
go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.17.0 h1:Ut6hgtYcASHwCzRHkXEtSsM251cXJPW+Z9DyLwEn6iI=
go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.17.0/go.mod h1:TYeE+8d5CjrgBa0ZuRaDeMpIC1xZ7atg4g+nInjuSjc=
go.opentelemetry.io/otel/metric v1.23.1 h1:PQJmqJ9u2QaJLBOELl1cxIdPcpbwzbkjfEyelTl2rlo=
go.opentelemetry.io/otel/metric v1.23.1/go.mod h1:mpG2QPlAfnK8yNhNJAxDZruU9Y1/HubbC+KyH8FaCWI=
go.opentelemetry.io/otel/sdk v1.23.1 h1:O7JmZw0h76if63LQdsBMKQDWNb5oEcOThG9IrxscV+E=
go.opentelemetry.io/otel/sdk v1.23.1/go.mod h1:LzdEVR5am1uKOOwfBWFef2DCi1nu3SA8XQxx2IerWFk=
go.opentelemetry.io/otel/sdk/metric v1.23.1 h1:T9/8WsYg+ZqIpMWwdISVVrlGb/N0Jr1OHjR/alpKwzg=
go.opentelemetry.io/otel/sdk/metric v1.23.1/go.mod h1:8WX6WnNtHCgUruJ4TJ+UssQjMtpxkpX0zveQC8JG/E0=
go.opentelemetry.io/otel/trace v1.23.1 h1:4LrmmEd8AU2rFvU1zegmvqW7+kWarxtNOPyeL6HmYY8=
go.opentelemetry.io/otel/trace v1.23.1/go.mod h1:4IpnpJFwr1mo/6HL8XIPJaE9y0+u1KcVmuW7dwFSVrI=
go.opentelemetry.io/proto/otlp v1.1.0 h1:2Di21piLrCqJ3U3eXGCTPHE9R8Nh+0uglSnOyxikMeI=
go.opentelemetry.io/proto/otlp v1.1.0/go.mod h1:GpBHCBWiqvVLDqmHZsoMM3C5ySeKTC7ej/RNTae6MdY=
go.sour.is/passwd v0.2.0 h1:eFLrvcayaS2e8ItjTU/tzBWtt1Am9xH97uBGqCCxdkk=
go.sour.is/passwd v0.2.0/go.mod h1:xDqWTLiztFhr1KvUh//lvmJfMg+9piWt7K+d1JX3n0s=
go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e h1:+WEEuIdZHnUeJJmEUjyYC2gfUMj69yZXw17EnHg/otA=
golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e/go.mod h1:Kr81I6Kryrl9sr8s2FK3vxD90NdsKWRuOIl2O4CvYbA=
golang.org/x/net v0.17.0 h1:pVaXccu2ozPjCXewfr1S7xza/zcXTity9cCdXQYSjIM=
golang.org/x/net v0.17.0/go.mod h1:NxSsAGuq816PNPmqtQdLE42eU2Fs7NoRIZrHJAlaCOE=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.19.0 h1:ENy+Az/9Y1vSrlrvBSyna3PITt4tiZLf7sgCjZBX7Wo=
golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
golang.org/x/exp v0.0.0-20240213143201-ec583247a57a h1:HinSgX1tJRX3KsL//Gxynpw5CTOAIPhgL4W8PNiIpVE=
golang.org/x/exp v0.0.0-20240213143201-ec583247a57a/go.mod h1:CxmFvTBINI24O/j8iY7H1xHzx2i4OsyguNBmN/uPtqc=
golang.org/x/mod v0.15.0 h1:SernR4v+D55NyBH2QiEQrlBAnj1ECL6AGrA5+dPaMY8=
golang.org/x/mod v0.15.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
golang.org/x/net v0.21.0 h1:AQyQV4dYCvJ7vGmJyKki9+PBdyvhkSd8EIx/qb0AYv4=
golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
golang.org/x/net v0.23.0 h1:7EYJ93RZ9vYSZAIb2x3lnuvqO5zneoD6IvWjuhfxjTs=
golang.org/x/net v0.23.0/go.mod h1:JKghWKKOSdJwpW2GEx0Ja7fmaKnMsbu+MWVZTokSYmg=
golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.3.0 h1:ftCYgMx6zT/asHUrPw8BLLscYtGznsLAnjq5RH9P66E=
golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
golang.org/x/oauth2 v0.0.0-20170912212905-13449ad91cb2/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/sync v0.0.0-20170517211232-f52d1811a629/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.6.0 h1:5BMeUDZ7vkXGfEr1x9B4bRcTH4lpkTkpdh0T/J+qjbQ=
golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.17.0 h1:25cE3gD+tdBA7lp7QfhuV+rJiE9YXTcS3VG1SqssI/Y=
golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
golang.org/x/time v0.0.0-20170424234030-8be79e1e0910/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.18.0 h1:k8NLag8AGHnn+PHbl7g43CtqZAwG60vZkLqgyZgIHgQ=
golang.org/x/tools v0.18.0/go.mod h1:GL7B4CwcLLeo59yx/9UWWuNOW1n3VZ4f5axWfML7Lcg=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/genproto v0.0.0-20230711160842-782d3b101e98 h1:Z0hjGZePRE0ZBWotvtrwxFNrNE9CUAGtplaDK5NNI/g=
google.golang.org/genproto/googleapis/api v0.0.0-20230711160842-782d3b101e98 h1:FmF5cCW94Ij59cfpoLiwTgodWmm60eEV0CjlsVg2fuw=
google.golang.org/genproto/googleapis/api v0.0.0-20230711160842-782d3b101e98/go.mod h1:rsr7RhLuwsDKL7RmgDDCUc6yaGr1iqceVb5Wv6f6YvQ=
google.golang.org/genproto/googleapis/rpc v0.0.0-20230711160842-782d3b101e98 h1:bVf09lpb+OJbByTj913DRJioFFAjf/ZGxEz7MajTp2U=
google.golang.org/genproto/googleapis/rpc v0.0.0-20230711160842-782d3b101e98/go.mod h1:TUfxEVdsvPg18p6AslUXFoLdpED4oBnGwyqk3dV1XzM=
google.golang.org/grpc v1.58.0 h1:32JY8YpPMSR45K+c3o6b8VL73V+rR8k+DeMIr4vRH8o=
google.golang.org/grpc v1.58.0/go.mod h1:tgX3ZQDlNJGU96V6yHh1T/JeoBQ2TXdr43YbYSsCJk0=
google.golang.org/grpc v1.58.3 h1:BjnpXut1btbtgN/6sp+brB2Kbm2LjNXnidYujAVbSoQ=
google.golang.org/grpc v1.58.3/go.mod h1:tgX3ZQDlNJGU96V6yHh1T/JeoBQ2TXdr43YbYSsCJk0=
google.golang.org/api v0.0.0-20170921000349-586095a6e407/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0=
google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
google.golang.org/genproto v0.0.0-20170918111702-1e559d0a00ee/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/genproto v0.0.0-20240213162025-012b6fc9bca9 h1:9+tzLLstTlPTRyJTh+ah5wIMsBW5c4tQwGTN3thOW9Y=
google.golang.org/genproto v0.0.0-20240213162025-012b6fc9bca9/go.mod h1:mqHbVIp48Muh7Ywss/AD6I5kNVKZMmAa/QEW58Gxp2s=
google.golang.org/genproto/googleapis/api v0.0.0-20240213162025-012b6fc9bca9 h1:4++qSzdWBUy9/2x8L5KZgwZw+mjJZ2yDSCGMVM0YzRs=
google.golang.org/genproto/googleapis/api v0.0.0-20240213162025-012b6fc9bca9/go.mod h1:PVreiBMirk8ypES6aw9d4p6iiBNSIfZEBqr3UGoAi2E=
google.golang.org/genproto/googleapis/rpc v0.0.0-20240213162025-012b6fc9bca9 h1:hZB7eLIaYlW9qXRfCq/qDaPdbeY3757uARz5Vvfv+cY=
google.golang.org/genproto/googleapis/rpc v0.0.0-20240213162025-012b6fc9bca9/go.mod h1:YUWgXUFRPfoYK1IHMuxH5K6nPEXSCzIMljnQ59lLRCk=
google.golang.org/grpc v1.2.1-0.20170921194603-d4b75ebd4f9f/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
google.golang.org/grpc v1.61.1 h1:kLAiWrZs7YeDM6MumDe7m3y4aM6wacLzM1Y/wiLP9XY=
google.golang.org/grpc v1.61.1/go.mod h1:VUbo7IFqmF1QtCAstipjG0GIoq49KvMe9+h1jFLBNJs=
google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
google.golang.org/protobuf v1.32.0 h1:pPC6BG5ex8PDFnkbrGU3EixyhKcQ2aDuBS36lqK/C7I=
google.golang.org/protobuf v1.32.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@ -141,3 +227,20 @@ gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gotest.tools v2.2.0+incompatible h1:VsBPFP1AI068pPrMxtb/S8Zkgf9xEmTLJjfM+P5UIEo=
gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6 h1:5D53IMaUuA5InSeMu9eJtlQXS2NxAhyWQvkKEgXZhHI=
modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6/go.mod h1:Qz0X07sNOR1jWYCrJMEnbW/X55x206Q7Vt4mz6/wHp4=
modernc.org/libc v1.41.0 h1:g9YAc6BkKlgORsUWj+JwqoB1wU3o4DE3bM3yvA3k+Gk=
modernc.org/libc v1.41.0/go.mod h1:w0eszPsiXoOnoMJgrXjglgLuDy/bt5RR4y3QzUUeodY=
modernc.org/mathutil v1.6.0 h1:fRe9+AmYlaej+64JsEEhoWuAYBkOtQiMEU7n/XgfYi4=
modernc.org/mathutil v1.6.0/go.mod h1:Ui5Q9q1TR2gFm0AQRqQUaBWFLAhQpCwNcuhBOSedWPo=
modernc.org/memory v1.7.2 h1:Klh90S215mmH8c9gO98QxQFsY+W451E8AnzjoE2ee1E=
modernc.org/memory v1.7.2/go.mod h1:NO4NVCQy0N7ln+T9ngWqOQfi7ley4vpwvARR+Hjw95E=
modernc.org/sqlite v1.29.1 h1:19GY2qvWB4VPw0HppFlZCPAbmxFU41r+qjKZQdQ1ryA=
modernc.org/sqlite v1.29.1/go.mod h1:hG41jCYxOAOoO6BRK66AdRlmOcDzXf7qnwlwjUIOqa0=
modernc.org/strutil v1.2.0 h1:agBi9dp1I+eOnxXeiZawM8F4LawKv4NzGWSaLfyeNZA=
modernc.org/strutil v1.2.0/go.mod h1:/mdcBmfOibveCTBxUl5B5l6W+TTH1FXPLHZE6bTosX0=
modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=
modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=

115
ident/ident.go Normal file
View File

@ -0,0 +1,115 @@
package ident
import (
"context"
"errors"
"fmt"
"io"
"net/http"
"sort"
"github.com/oklog/ulid/v2"
"go.sour.is/passwd"
)
// Ident interface for a logged in user
type Ident interface {
Identity() string
Session() *SessionInfo
}
type SessionInfo struct {
SessionID ulid.ULID
Active bool
}
func (s *SessionInfo) Session() *SessionInfo { return s }
// Handler handler function to read ident from HTTP request
type Handler interface {
ReadIdent(r *http.Request) (Ident, error)
}
type HandleGet interface {
GetIdent(context.Context /* identity */, string) (Ident, error)
}
type HandleRegister interface {
RegisterIdent(ctx context.Context, identity, displayName string, passwd []byte) (Ident, error)
}
type source struct {
Handler
priority int
}
var contextKey = struct{ key string }{"ident"}
func FromContext(ctx context.Context) Ident {
if id, ok := ctx.Value(contextKey).(Ident); ok {
return id
}
return Anonymous
}
type IDM struct {
rand io.Reader
sources []source
pwd *passwd.Passwd
}
func NewIDM(pwd *passwd.Passwd, rand io.Reader) *IDM {
return &IDM{pwd: pwd, rand: rand}
}
func (idm *IDM) Add(p int, h Handler) {
idm.sources = append(idm.sources, source{priority: p, Handler: h})
sort.Slice(idm.sources, func(i, j int) bool { return idm.sources[i].priority < idm.sources[j].priority })
}
func (idm *IDM) Passwd(pass, hash []byte) ([]byte, error) {
return idm.pwd.Passwd(pass, hash)
}
// ReadIdent read ident from a list of ident handlers
func (idm *IDM) ReadIdent(r *http.Request) (Ident, error) {
var errs error
for _, source := range idm.sources {
u, err := source.ReadIdent(r)
errs = errors.Join(errs, err)
if u != nil && u.Session().Active {
return u, errs
}
}
return Anonymous, errs
}
func (idm *IDM) RegisterIdent(ctx context.Context, identity, displayName string, passwd []byte) (Ident, error) {
for _, source := range idm.sources {
if source, ok := source.Handler.(HandleRegister); ok {
return source.RegisterIdent(ctx, identity, displayName, passwd)
}
}
return nil, fmt.Errorf("no HandleRegister source registered")
}
func (idm *IDM) GetIdent(ctx context.Context, identity string) (Ident, error) {
for _, source := range idm.sources {
if source, ok := source.Handler.(HandleGet); ok {
return source.GetIdent(ctx, identity)
}
}
return nil, fmt.Errorf("no HandleGet source registered")
}
func (idm *IDM) NewSessionInfo() (session SessionInfo, err error) {
session.SessionID, err = ulid.New(ulid.Now(), idm.rand)
if err != nil {
return
}
session.Active = true
return session, nil
}

75
ident/null-user.go Normal file
View File

@ -0,0 +1,75 @@
package ident
import "net/http"
// nullUser implements a null ident
type nullUser struct {
identity string
aspect string
displayName string
SessionInfo
}
// Anonymous is a logged out user
var Anonymous = NewNullUser("anon", "none", "Guest User", false)
// NewNullUser creates a null user ident
func NewNullUser(ident, aspect, name string, active bool) *nullUser {
return &nullUser{ident, aspect, name, SessionInfo{Active: active}}
}
func (id nullUser) String() string {
return "id: " + id.identity + " dn: " + id.displayName
}
// GetIdentity returns identity
func (m nullUser) Identity() string {
return m.identity
}
// GetAspect returns aspect
func (m nullUser) Aspect() string {
return m.aspect
}
// HasRole returns true if matches role
func (m nullUser) Role(r ...string) bool {
return m.Active
}
// HasGroup returns true if matches group
func (m nullUser) Group(g ...string) bool {
return m.Active
}
// GetGroups returns empty list
func (m nullUser) Groups() []string {
return []string{}
}
// GetRoles returns empty list
func (m nullUser) Roles() []string {
return []string{}
}
// GetMeta returns empty list
func (m nullUser) Meta() map[string]string {
return make(map[string]string)
}
// IsActive returns true if active
func (m nullUser) IsActive() bool {
return m.Active
}
// GetDisplay returns display name
func (m nullUser) Display() string {
return m.displayName
}
// MakeHandlerFunc returns handler func
func (m nullUser) HandlerFunc() func(r *http.Request) Ident {
return func(r *http.Request) Ident {
return &m
}
}

249
ident/routes.go Normal file
View File

@ -0,0 +1,249 @@
package ident
import (
"context"
"fmt"
"net/http"
"go.sour.is/pkg/lg"
)
var (
loginForm = func(nick string, valid bool) string {
indicator := ""
if !valid {
indicator = `class="invalid"`
}
if nick != "" {
nick = `value="` + nick + `"`
}
return `
<form id="login" hx-post="ident/session" hx-target="#login" hx-swap="outerHTML">
<input required id="login-identity" name="identity" type="text" ` + nick + `placeholder="Identity..." />
<input required id="login-passwd" name="passwd" type="password" ` + indicator + ` placeholder="Password..." />
<button type="submit">Login</button>
<button hx-get="ident/register">Register</button>
</form>`
}
logoutForm = func(id Ident) string {
display := id.Identity()
if id, ok := id.(interface{ DisplayName() string }); ok {
display = id.DisplayName()
}
return `<button id="login" hx-delete="ident/session" hx-target="#login" hx-swap="outerHTML">` + display + ` (logout)</button>`
}
registerForm = `
<form id="login" hx-post="ident/register" hx-target="#login" hx-swap="outerHTML">
<input required id="register-display" name="displayName" type="text" placeholder="Display Name..." />
<input required id="register-identity" name="identity" type="text" placeholder="Identity..." />
<input required id="register-passwd" name="passwd" type="password" placeholder="Password..." />
<button type="submit">Register</button>
<button hx-get="ident" hx-target="#login" hx-swap="outerHTML">Close</button>
</form>`
)
type sessionIF interface {
ReadIdent(r *http.Request) (Ident, error)
CreateSession(context.Context, http.ResponseWriter, Ident) error
DestroySession(context.Context, http.ResponseWriter, Ident) error
}
type root struct {
idm *IDM
session sessionIF
}
func NewHTTP(idm *IDM, session sessionIF) *root {
idm.Add(0, session)
return &root{
idm: idm,
session: session,
}
}
func (s *root) RegisterHTTP(mux *http.ServeMux) {
mux.HandleFunc("/ident", s.sessionHTTP)
mux.HandleFunc("/ident/register", s.registerHTTP)
mux.HandleFunc("/ident/session", s.sessionHTTP)
}
func (s *root) RegisterAPIv1(mux *http.ServeMux) {
mux.HandleFunc("GET /ident", s.sessionV1)
mux.HandleFunc("POST /ident", s.registerV1)
mux.HandleFunc("/ident/session", s.sessionV1)
}
func (s *root) RegisterMiddleware(hdlr http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctx, span := lg.Span(r.Context())
defer span.End()
r = r.WithContext(ctx)
id, err := s.idm.ReadIdent(r)
span.RecordError(err)
if id == nil {
id = Anonymous
}
r = r.WithContext(context.WithValue(r.Context(), contextKey, id))
hdlr.ServeHTTP(w, r)
})
}
func (s *root) sessionV1(w http.ResponseWriter, r *http.Request) {
ctx, span := lg.Span(r.Context())
defer span.End()
var id Ident = FromContext(ctx)
switch r.Method {
case http.MethodGet:
if id == nil {
http.Error(w, "NO_AUTH", http.StatusUnauthorized)
return
}
fmt.Fprint(w, id)
case http.MethodPost:
if !id.Session().Active {
http.Error(w, "NO_AUTH", http.StatusUnauthorized)
return
}
err := s.session.CreateSession(ctx, w, id)
if err != nil {
span.RecordError(err)
http.Error(w, "ERR", http.StatusInternalServerError)
return
}
fmt.Fprint(w, id)
case http.MethodDelete:
if !id.Session().Active {
http.Error(w, "NO_AUTH", http.StatusUnauthorized)
return
}
err := s.session.DestroySession(ctx, w, FromContext(ctx))
if err != nil {
span.RecordError(err)
http.Error(w, "ERR", http.StatusInternalServerError)
return
}
http.Error(w, "GONE", http.StatusGone)
default:
http.Error(w, http.StatusText(http.StatusMethodNotAllowed), http.StatusMethodNotAllowed)
return
}
}
func (s *root) registerV1(w http.ResponseWriter, r *http.Request) {
ctx, span := lg.Span(r.Context())
defer span.End()
r.ParseForm()
identity := r.Form.Get("identity")
display := r.Form.Get("displayName")
passwd, err := s.idm.Passwd([]byte(r.Form.Get("passwd")), nil)
if err != nil {
http.Error(w, "ERR", http.StatusInternalServerError)
return
}
_, err = s.idm.RegisterIdent(ctx, identity, display, passwd)
if err != nil {
http.Error(w, "ERR", http.StatusInternalServerError)
return
}
http.Error(w, "OK "+identity, http.StatusCreated)
}
func (s *root) sessionHTTP(w http.ResponseWriter, r *http.Request) {
ctx, span := lg.Span(r.Context())
defer span.End()
id := FromContext(ctx)
switch r.Method {
case http.MethodGet:
if id.Session().Active {
fmt.Fprint(w, logoutForm(id))
return
}
fmt.Fprint(w, loginForm("", true))
case http.MethodPost:
if !id.Session().Active {
http.Error(w, loginForm("", false), http.StatusOK)
return
}
err := s.session.CreateSession(ctx, w, id)
span.RecordError(err)
if err != nil {
http.Error(w, "ERROR", http.StatusInternalServerError)
return
}
fmt.Fprint(w, logoutForm(id))
case http.MethodDelete:
err := s.session.DestroySession(ctx, w, FromContext(ctx))
span.RecordError(err)
if err != nil {
http.Error(w, loginForm("", true), http.StatusUnauthorized)
return
}
fmt.Fprint(w, loginForm("", true))
default:
http.Error(w, "ERROR", http.StatusMethodNotAllowed)
}
}
func (s *root) registerHTTP(w http.ResponseWriter, r *http.Request) {
ctx, span := lg.Span(r.Context())
defer span.End()
switch r.Method {
case http.MethodGet:
fmt.Fprint(w, registerForm)
return
case http.MethodPost:
// break
default:
http.Error(w, "ERR", http.StatusMethodNotAllowed)
return
}
r.ParseForm()
identity := r.Form.Get("identity")
display := r.Form.Get("displayName")
passwd, err := s.idm.Passwd([]byte(r.Form.Get("passwd")), nil)
if err != nil {
http.Error(w, "ERR", http.StatusInternalServerError)
return
}
id, err := s.idm.RegisterIdent(ctx, identity, display, passwd)
if err != nil {
http.Error(w, "ERR", http.StatusInternalServerError)
return
}
if !id.Session().Active {
http.Error(w, loginForm("", false), http.StatusUnauthorized)
return
}
err = s.session.CreateSession(ctx, w, id)
span.RecordError(err)
if err != nil {
http.Error(w, "ERROR", http.StatusInternalServerError)
return
}
http.Error(w, logoutForm(id), http.StatusCreated)
}

275
ident/source/mercury.go Normal file
View File

@ -0,0 +1,275 @@
package source
import (
"context"
"fmt"
"net/http"
"strings"
"time"
"go.sour.is/pkg/ident"
"go.sour.is/pkg/lg"
"go.sour.is/pkg/mercury"
)
const identNS = "ident."
const identSFX = ".credentials"
type registry interface {
GetIndex(ctx context.Context, search mercury.Search) (c mercury.Config, err error)
GetConfig(ctx context.Context, search mercury.Search) (mercury.Config, error)
WriteConfig(ctx context.Context, spaces mercury.Config) error
}
type mercuryIdent struct {
identity string
display string
passwd []byte
ed25519 []byte
ident.SessionInfo
}
func (id *mercuryIdent) Identity() string { return id.identity }
func (id *mercuryIdent) DisplayName() string { return id.display }
func (id *mercuryIdent) Space() string { return identNS + "@" + id.identity }
func (id *mercuryIdent) FromConfig(cfg mercury.Config) error {
if id == nil {
return fmt.Errorf("nil ident")
}
for _, s := range cfg {
if !strings.HasPrefix(s.Space, identNS) {
continue
}
if id.identity == "" {
_, id.identity, _ = strings.Cut(s.Space, ".@")
id.identity, _, _ = strings.Cut(id.identity, ".")
}
switch {
case strings.HasSuffix(s.Space, ".credentials"):
id.passwd = []byte(s.FirstValue("passwd").First())
id.ed25519 = []byte(s.FirstValue("ed25519").First())
default:
id.display = s.FirstValue("displayName").First()
}
}
return nil
}
func (id *mercuryIdent) ToConfig() mercury.Config {
space := id.Space()
list := func(values ...mercury.Value) []mercury.Value { return values }
value := func(space string, seq uint64, name string, values ...string) mercury.Value {
return mercury.Value{
Space: space,
Seq: seq,
Name: name,
Values: values,
}
}
return mercury.Config{
&mercury.Space{
Space: space,
List: list(
value(space, 1, "displayName", id.display),
value(space, 2, "lastLogin", time.UnixMilli(int64(id.Session().SessionID.Time())).Format(time.RFC3339)),
),
},
&mercury.Space{
Space: space + identSFX,
List: list(
value(space+identSFX, 1, "passwd", string(id.passwd)),
value(space+identSFX, 1, "ed25519", string(id.ed25519)),
),
},
}
}
func (id *mercuryIdent) String() string {
return "id: " + id.identity + " sp: " + id.Space() + " dn: " + id.display // + " ps: " + string(id.passwd)
}
func (id *mercuryIdent) HasRole(r ...string) bool {
return false
}
type mercurySource struct {
r registry
idm *ident.IDM
}
func NewMercury(r registry, pwd *ident.IDM) *mercurySource {
return &mercurySource{r, pwd}
}
func (s *mercurySource) ReadIdent(r *http.Request) (ident.Ident, error) {
if id, err := s.readIdentBasic(r); id != nil {
return id, err
}
if id, err := s.readIdentURL(r); id != nil {
return id, err
}
if id, err := s.readIdentHTTP(r); id != nil {
return id, err
}
return nil, fmt.Errorf("no auth")
}
func (s *mercurySource) readIdentURL(r *http.Request) (ident.Ident, error) {
ctx, span := lg.Span(r.Context())
defer span.End()
pass, ok := r.URL.User.Password()
if !ok {
return nil, nil
}
id := &mercuryIdent{
identity: r.URL.User.Username(),
passwd: []byte(pass),
}
space := id.Space()
c, err := s.r.GetConfig(ctx, mercury.ParseSearch("trace:"+space+identSFX))
if err != nil {
span.RecordError(err)
return id, err
}
var current mercuryIdent
current.FromConfig(c)
if len(current.passwd) == 0 {
return nil, fmt.Errorf("not registered")
}
_, err = s.idm.Passwd(id.passwd, current.passwd)
if err != nil {
return id, err
}
current.SessionInfo, err = s.idm.NewSessionInfo()
if err != nil {
return id, err
}
err = s.r.WriteConfig(ctx, current.ToConfig())
if err != nil {
return &current, err
}
return &current, nil
}
func (s *mercurySource) readIdentBasic(r *http.Request) (ident.Ident, error) {
ctx, span := lg.Span(r.Context())
defer span.End()
user, pass, ok := r.BasicAuth()
if !ok {
return nil, nil
}
id := &mercuryIdent{
identity: user,
passwd: []byte(pass),
}
space := id.Space()
c, err := s.r.GetConfig(ctx, mercury.ParseSearch("trace:"+space+identSFX))
if err != nil {
span.RecordError(err)
return id, err
}
var current mercuryIdent
current.FromConfig(c)
if len(current.passwd) == 0 {
return nil, fmt.Errorf("not registered")
}
_, err = s.idm.Passwd(id.passwd, current.passwd)
if err != nil {
return id, err
}
current.SessionInfo, err = s.idm.NewSessionInfo()
if err != nil {
return id, err
}
err = s.r.WriteConfig(ctx, current.ToConfig())
if err != nil {
return &current, err
}
return &current, nil
}
func (s *mercurySource) readIdentHTTP(r *http.Request) (ident.Ident, error) {
ctx, span := lg.Span(r.Context())
defer span.End()
if r.Method != http.MethodPost {
return nil, fmt.Errorf("method not allowed")
}
r.ParseForm()
id := &mercuryIdent{
identity: r.Form.Get("identity"),
passwd: []byte(r.Form.Get("passwd")),
}
if id.identity == "" {
return nil, nil
}
space := id.Space()
c, err := s.r.GetConfig(ctx, mercury.ParseSearch("trace:"+space+identSFX))
if err != nil {
span.RecordError(err)
return id, err
}
var current mercuryIdent
current.FromConfig(c)
if len(current.passwd) == 0 {
return nil, fmt.Errorf("not registered")
}
_, err = s.idm.Passwd(id.passwd, current.passwd)
if err != nil {
return id, err
}
current.SessionInfo, err = s.idm.NewSessionInfo()
if err != nil {
return id, err
}
err = s.r.WriteConfig(ctx, current.ToConfig())
if err != nil {
return &current, err
}
return &current, nil
}
func (s *mercurySource) RegisterIdent(ctx context.Context, identity, display string, passwd []byte) (ident.Ident, error) {
ctx, span := lg.Span(ctx)
defer span.End()
id := &mercuryIdent{identity: identity, display: display, passwd: passwd}
_, err := s.r.GetIndex(ctx, mercury.ParseSearch( id.Space()))
if err != nil {
return nil, err
}
id.SessionInfo, err = s.idm.NewSessionInfo()
if err != nil {
return id, err
}
err = s.r.WriteConfig(ctx, id.ToConfig())
if err != nil {
return nil, err
}
return id, nil
}

83
ident/source/session.go Normal file
View File

@ -0,0 +1,83 @@
package source
import (
"context"
"net/http"
"time"
"github.com/oklog/ulid/v2"
"go.sour.is/pkg/ident"
"go.sour.is/pkg/lg"
"go.sour.is/pkg/locker"
)
const CookieName = "sour.is-ident"
type sessions map[ulid.ULID]ident.Ident
type session struct {
cookieName string
sessions *locker.Locked[sessions]
}
func NewSession(cookieName string) *session {
return &session{
cookieName: cookieName,
sessions: locker.New(make(sessions)),
}
}
func (s *session) ReadIdent(r *http.Request) (ident.Ident, error) {
ctx, span := lg.Span(r.Context())
defer span.End()
cookie, err := r.Cookie(s.cookieName)
span.RecordError(err)
if err != nil {
return nil, nil
}
sessionID, err := ulid.Parse(cookie.Value)
span.RecordError(err)
var id ident.Ident = ident.Anonymous
if err == nil {
err = s.sessions.Use(ctx, func(ctx context.Context, sessions sessions) error {
if session, ok := sessions[sessionID]; ok {
id = session
}
return nil
})
}
span.RecordError(err)
return id, err
}
func (s *session) CreateSession(ctx context.Context, w http.ResponseWriter, id ident.Ident) error {
http.SetCookie(w, &http.Cookie{
Name: s.cookieName,
Value: id.Session().SessionID.String(),
Expires: time.Time{},
Path: "/",
Secure: false,
HttpOnly: true,
})
return s.sessions.Use(ctx, func(ctx context.Context, sessions sessions) error {
sessions[id.Session().SessionID] = id
return nil
})
}
func (s *session) DestroySession(ctx context.Context, w http.ResponseWriter, id ident.Ident) error {
session := id.Session()
session.Active = false
http.SetCookie(w, &http.Cookie{Name: s.cookieName, MaxAge: -1})
return s.sessions.Use(ctx, func(ctx context.Context, sessions sessions) error {
delete(sessions, session.SessionID)
return nil
})
}

View File

@ -58,17 +58,56 @@ type wrapSpan struct {
trace.Span
}
func LogQuery(q string, args []any, err error) (string, trace.EventOption) {
var attrs []attribute.KeyValue
for k, v := range args {
var attr attribute.KeyValue
switch v:=v.(type) {
case int64:
attr = attribute.Int64(
fmt.Sprintf("$%d", k),
v,
)
case string:
attr = attribute.String(
fmt.Sprintf("$%d", k),
v,
)
default:
attr = attribute.String(
fmt.Sprintf("$%d", k),
fmt.Sprint(v),
)
}
attrs = append(attrs, attr)
}
return q, trace.WithAttributes(attrs...)
}
func (w wrapSpan) AddEvent(name string, options ...trace.EventOption) {
w.Span.AddEvent(name, options...)
cfg := trace.NewEventConfig(options...)
attrs := cfg.Attributes()
args := make([]any, len(attrs)*2)
args := make([]any, len(attrs))
for i, a := range attrs {
args[2*i] = a.Key
args[2*i+1] = a.Value
switch a.Value.Type() {
case attribute.BOOL:
args[i] = slog.Bool(string(a.Key), a.Value.AsBool())
case attribute.INT64:
args[i] = slog.Int64(string(a.Key), a.Value.AsInt64())
case attribute.FLOAT64:
args[i] = slog.Float64(string(a.Key), a.Value.AsFloat64())
case attribute.STRING:
args[i] = slog.String(string(a.Key), a.Value.AsString())
default:
args[i] = slog.Any(string(a.Key), a.Value.AsInterface())
}
}
slog.Debug(name, args...)

View File

@ -4,7 +4,10 @@ import (
"context"
"database/sql"
"database/sql/driver"
"errors"
"fmt"
"io"
"log"
"net/url"
"os"
"path/filepath"
@ -17,28 +20,37 @@ import (
)
func init() {
sql.Register("libsql+embed", &db{})
sql.Register("libsql+embed", &db{conns: make(map[string]*connector)})
}
type db struct {
conns map[string]connector
conns map[string]*connector
mu sync.RWMutex
}
type connector struct {
*libsql.Connector
dsn string
dir string
driver *db
dsn string
dir string
driver *db
removeDir bool
}
var _ io.Closer = (*connector)(nil)
func (c *connector) Close() error {
log.Println("closing db connection", c.dir)
defer log.Println("closed db connection", c.dir)
c.driver.mu.Lock()
delete(c.driver.conns, c.dsn)
c.driver.mu.Unlock()
defer os.RemoveAll(c.dir)
if c.removeDir {
defer os.RemoveAll(c.dir)
}
log.Println("sync db")
if err := c.Connector.Sync(); err != nil {
return fmt.Errorf("syncing database: %w", err)
}
@ -47,7 +59,12 @@ func (c *connector) Close() error {
}
func (db *db) OpenConnector(dsn string) (driver.Connector, error) {
if c, ok := func() (connector, bool) {
// log.Println("connector", dsn)
if dsn == "" {
return nil, fmt.Errorf("no dsn")
}
if c, ok := func() (*connector, bool) {
db.mu.RLock()
defer db.mu.RUnlock()
c, ok := db.conns[dsn]
@ -79,20 +96,39 @@ func (db *db) OpenConnector(dsn string) (driver.Connector, error) {
libsql.WithAuthToken(authToken),
}
if refresh, err := strconv.ParseInt(u.Query().Get("refresh"),10,64); err == nil {
if refresh, err := strconv.ParseInt(u.Query().Get("refresh"), 10, 64); err == nil {
log.Println("refresh: ", refresh)
opts = append(opts, libsql.WithSyncInterval(time.Duration(refresh)*time.Minute))
}
if readWrite, err := strconv.ParseBool(u.Query().Get("readYourWrites")); err == nil {
log.Println("read your writes: ", readWrite)
opts = append(opts, libsql.WithReadYourWrites(readWrite))
}
if key := u.Query().Get("key"); key != "" {
opts = append(opts, libsql.WithEncryption(key))
}
dir, err := os.MkdirTemp("", "libsql-*")
if err != nil {
return nil, fmt.Errorf("creating temporary directory: %w", err)
var dir string
var removeDir bool
if dir = u.Query().Get("store"); dir == "" {
removeDir = true
dir, err = os.MkdirTemp("", "libsql-*")
log.Println("creating temporary directory:", dir)
if err != nil {
return nil, fmt.Errorf("creating temporary directory: %w", err)
}
} else {
stat, err := os.Stat(dir)
if errors.Is(err, os.ErrNotExist) {
if err = os.MkdirAll(dir, 0700); err != nil {
return nil, err
}
} else {
if !stat.IsDir() {
return nil, fmt.Errorf("store not directory")
}
}
}
dbPath := filepath.Join(dir, dbname)
@ -105,13 +141,19 @@ func (db *db) OpenConnector(dsn string) (driver.Connector, error) {
return nil, fmt.Errorf("creating connector: %w", err)
}
connector := connector{c, dsn, dir, db}
log.Println("sync db")
if err := c.Sync(); err != nil {
return nil, fmt.Errorf("syncing database: %w", err)
}
connector := &connector{c, dsn, dir, db, removeDir}
db.conns[dsn] = connector
return connector, nil
}
func (db *db) Open(dsn string) (driver.Conn, error) {
log.Println("open", dsn)
c, err := db.OpenConnector(dsn)
if err != nil {
return nil, err

138
lsm/marshal.go Normal file
View File

@ -0,0 +1,138 @@
package lsm
import (
"bytes"
"encoding"
"encoding/binary"
"fmt"
)
type entry struct {
key string
value uint64
}
// MarshalBinary implements encoding.BinaryMarshaler.
func (e *entry) MarshalBinary() (data []byte, err error) {
data = make([]byte, len(e.key), len(e.key)+binary.MaxVarintLen16)
copy(data, e.key)
data = binary.AppendUvarint(data, e.value)
reverse(data[len(e.key):])
return data, err
}
// UnmarshalBinary implements encoding.BinaryUnmarshaler.
func (e *entry) UnmarshalBinary(data []byte) error {
// fmt.Println("unmarshal", data, string(data))
if len(data) < binary.MaxVarintLen16 {
return fmt.Errorf("%w: bad data", ErrDecode)
}
head := make([]byte, binary.MaxVarintLen16)
copy(head, data[max(0, len(data)-cap(head)):])
reverse(head)
size := 0
e.value, size = binary.Uvarint(head)
if size == 0 {
return fmt.Errorf("%w: invalid data", ErrDecode)
}
e.key = string(data[:len(data)-size])
return nil
}
var _ encoding.BinaryMarshaler = (*entry)(nil)
var _ encoding.BinaryUnmarshaler = (*entry)(nil)
type entries []entry
// MarshalBinary implements encoding.BinaryMarshaler.
func (lis *entries) MarshalBinary() (data []byte, err error) {
var buf bytes.Buffer
for _, e := range *lis {
d, err := e.MarshalBinary()
if err != nil {
return nil, err
}
_, err = buf.Write(d)
if err != nil {
return nil, err
}
_, err = buf.Write(reverse(binary.AppendUvarint(make([]byte, 0, binary.MaxVarintLen32), uint64(len(d)))))
if err != nil {
return nil, err
}
}
return buf.Bytes(), err
}
// UnmarshalBinary implements encoding.BinaryUnmarshaler.
func (lis *entries) UnmarshalBinary(data []byte) error {
head := make([]byte, binary.MaxVarintLen16)
pos := uint64(len(data))
for pos > 0 {
copy(head, data[max(0, pos-uint64(cap(head))):])
length, size := binary.Uvarint(reverse(head))
e := entry{}
if err := e.UnmarshalBinary(data[max(0, pos-(length+uint64(size))) : pos-uint64(size)]); err != nil {
return err
}
*lis = append(*lis, e)
pos -= length + uint64(size)
}
reverse(*lis)
return nil
}
var _ encoding.BinaryMarshaler = (*entries)(nil)
var _ encoding.BinaryUnmarshaler = (*entries)(nil)
type segment struct {
entries entries
}
// MarshalBinary implements encoding.BinaryMarshaler.
func (s *segment) MarshalBinary() (data []byte, err error) {
head := header{
entries: uint64(len(s.entries)),
}
data, err = s.entries.MarshalBinary()
if err != nil {
return nil, err
}
head.datalen = uint64(len(data))
h := hash()
h.Write(data)
head.sig = h.Sum(nil)
return head.Append(data), err
}
// UnmarshalBinary implements encoding.BinaryUnmarshaler.
func (s *segment) UnmarshalBinary(data []byte) error {
head, err := ReadHead(data)
if err != nil {
return err
}
h := hash()
h.Write(data[:head.datalen])
if !bytes.Equal(head.sig, h.Sum(nil)) {
return fmt.Errorf("%w: invalid checksum", ErrDecode)
}
s.entries = make(entries, 0, head.entries)
return s.entries.UnmarshalBinary(data[:head.datalen])
}

76
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package lsm
import (
"io/fs"
"testing"
"github.com/matryer/is"
)
func TestEncoding(t *testing.T) {
is := is.New(t)
data := segment{entries: entries{
{"key-1", 1},
{"key-2", 2},
{"key-3", 3},
{"longerkey-4", 65535},
}}
b, err := data.MarshalBinary()
is.NoErr(err)
var got segment
err = got.UnmarshalBinary(b)
is.NoErr(err)
is.Equal(data, got)
}
func TestReverse(t *testing.T) {
is := is.New(t)
got := []byte("gnirts a si siht")
reverse(got)
is.Equal(got, []byte("this is a string"))
got = []byte("!gnirts a si siht")
reverse(got)
is.Equal(got, []byte("this is a string!"))
}
func TestFile(t *testing.T) {
is := is.New(t)
entries := entries {
{"key-1", 1},
{"key-2", 2},
{"key-3", 3},
{"longerkey-4", 65535},
}
f := basicFile(t, entries, entries, entries)
sf, err := ReadFile(f)
is.NoErr(err)
is.Equal(len(sf.segments), 3)
}
func basicFile(t *testing.T, lis ...entries) fs.File {
t.Helper()
segments := make([][]byte, len(lis))
var err error
for i, entries := range lis {
data := segment{entries: entries}
segments[i], err = data.MarshalBinary()
if err != nil {
t.Error(err)
}
}
return NewFile(segments...)
}

370
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// SPDX-FileCopyrightText: 2023 Jon Lundy <jon@xuu.cc>
// SPDX-License-Identifier: BSD-3-Clause
// lsm -- Log Structured Merge-Tree
//
// This is a basic LSM tree using a SSTable optimized for append only writing. On disk data is organized into time ordered
// files of segments, containing reverse sorted keys. Each segment ends with a magic value `Souris\x01`, a 4byte hash, count of
// segment entries, and data length.
package lsm
import (
"bytes"
"encoding"
"encoding/binary"
"errors"
"fmt"
"hash/fnv"
"io"
"io/fs"
"sort"
)
var (
magic = reverse(append([]byte("Souris"), '\x01'))
hash = fnv.New32a
hashLength = hash().Size()
// segmentSize = 2 ^ 16 // min 2^9 = 512b, max? 2^20 = 1M
segmentFooterLength = len(magic) + hashLength + binary.MaxVarintLen32 + binary.MaxVarintLen32
)
type header struct {
sig []byte // 4Byte signature
entries uint64 // count of entries in segment
datalen uint64 // length of data
headlen uint64 // length of header
end int64 // location of end of data/start of header (start of data is `end - datalen`)
}
// ReadHead parse header from a segment. reads from the end of slice of length segmentFooterLength
func ReadHead(data []byte) (*header, error) {
if len(data) < len(magic)+6 {
return nil, fmt.Errorf("%w: invalid size", ErrDecode)
}
if !bytes.Equal(data[len(data)-len(magic):], magic) {
return nil, fmt.Errorf("%w: invalid header", ErrDecode)
}
head := make([]byte, 0, segmentFooterLength)
head = reverse(append(head, data[max(0, len(data)-cap(head)-1):]...))
size, s := binary.Uvarint(head[len(magic)+4:])
length, i := binary.Uvarint(head[len(magic)+4+s:])
return &header{
sig: head[len(magic) : len(magic)+4],
entries: size,
datalen: length,
headlen: uint64(len(magic) + hashLength + s + i),
end: int64(len(data)),
}, nil
}
func (h *header) Append(data []byte) []byte {
length := len(data)
data = append(data, h.sig...)
data = binary.AppendUvarint(data, h.entries)
data = binary.AppendUvarint(data, h.datalen)
reverse(data[length:])
return append(data, magic...)
}
var _ encoding.BinaryMarshaler = (*segment)(nil)
var _ encoding.BinaryUnmarshaler = (*segment)(nil)
var ErrDecode = errors.New("decode")
func reverse[T any](b []T) []T {
l := len(b)
for i := 0; i < l/2; i++ {
b[i], b[l-i-1] = b[l-i-1], b[i]
}
return b
}
// func clone[T ~[]E, E any](e []E) []E {
// return append(e[0:0:0], e...)
// }
type entryBytes []byte
// KeyValue returns the parsed key and value from an entry
func (e entryBytes) KeyValue() ([]byte, uint64) {
if len(e) < 2 {
return nil, 0
}
head := reverse(append(e[0:0:0], e[max(0, len(e)-binary.MaxVarintLen64):]...))
value, i := binary.Uvarint(head)
return append(e[0:0:0], e[:len(e)-i]...), value
}
// NewKeyValue packed into an entry
func NewKeyValue(key []byte, val uint64) entryBytes {
length := len(key)
data := append(key[0:0:0], key...)
data = binary.AppendUvarint(data, val)
reverse(data[length:])
return data
}
type listEntries []entryBytes
// WriteTo implements io.WriterTo.
func (lis *listEntries) WriteTo(wr io.Writer) (int64, error) {
if lis == nil {
return 0, nil
}
head := header{
entries: uint64(len(*lis)),
}
h := hash()
wr = io.MultiWriter(wr, h)
var i int64
for _, b := range *lis {
j, err := wr.Write(b)
i += int64(j)
if err != nil {
return i, err
}
j, err = wr.Write(reverse(binary.AppendUvarint(make([]byte, 0, binary.MaxVarintLen32), uint64(len(b)))))
i += int64(j)
if err != nil {
return i, err
}
}
head.datalen = uint64(i)
head.sig = h.Sum(nil)
b := head.Append([]byte{})
j, err := wr.Write(b)
i += int64(j)
return i, err
}
var _ sort.Interface = listEntries{}
// Len implements sort.Interface.
func (lis listEntries) Len() int {
return len(lis)
}
// Less implements sort.Interface.
func (lis listEntries) Less(i int, j int) bool {
iname, _ := lis[i].KeyValue()
jname, _ := lis[j].KeyValue()
return bytes.Compare(iname, jname) < 0
}
// Swap implements sort.Interface.
func (lis listEntries) Swap(i int, j int) {
lis[i], lis[j] = lis[j], lis[i]
}
type segmentReader struct {
head *header
rd io.ReaderAt
}
// FirstEntry parses the first segment entry from the end of the segment
func (s *segmentReader) FirstEntry() (*entryBytes, error) {
e, _, err := s.readEntryAt(-1)
return e, err
}
func (s *segmentReader) VerifyHash() (bool, error) {
h := hash()
data := make([]byte, s.head.datalen)
_, err := s.rd.ReadAt(data, s.head.end-int64(s.head.datalen))
if err != nil {
return false, err
}
_, err = h.Write(data)
ok := bytes.Equal(h.Sum(nil), s.head.sig)
return ok, err
}
// Find locates needle within a segment. if it cant find it will return the nearest key before needle.
func (s *segmentReader) Find(needle []byte, first bool) (*entryBytes, bool, error) {
if s == nil {
return nil, false, nil
}
e, pos, err := s.readEntryAt(-1)
if err != nil {
return nil, false, err
}
last := e
found := false
for pos > 0 {
key, _ := e.KeyValue()
switch bytes.Compare(key, needle) {
case 1: // key=ccc, needle=bbb
return last, found, nil
case 0: // equal
if first {
return e, true, nil
}
found = true
fallthrough
case -1: // key=aaa, needle=bbb
last = e
e, pos, err = s.readEntryAt(pos)
if err != nil {
return nil, found, err
}
}
}
return last, found, nil
}
func (s *segmentReader) readEntryAt(pos int64) (*entryBytes, int64, error) {
if pos < 0 {
pos = s.head.end
}
head := make([]byte, binary.MaxVarintLen16)
s.rd.ReadAt(head, pos-binary.MaxVarintLen16)
length, hsize := binary.Uvarint(reverse(head))
e := make(entryBytes, length)
_, err := s.rd.ReadAt(e, pos-int64(length)-int64(hsize))
return &e, pos - int64(length) - int64(hsize), err
}
type logFile struct {
rd interface {
io.ReaderAt
io.WriterTo
}
segments []segmentReader
fs.File
}
func ReadFile(fd fs.File) (*logFile, error) {
l := &logFile{File: fd}
stat, err := fd.Stat()
if err != nil {
return nil, err
}
eof := stat.Size()
if rd, ok := fd.(interface {
io.ReaderAt
io.WriterTo
}); ok {
l.rd = rd
} else {
rd, err := io.ReadAll(fd)
if err != nil {
return nil, err
}
l.rd = bytes.NewReader(rd)
}
head := make([]byte, segmentFooterLength)
for eof > 0 {
_, err = l.rd.ReadAt(head, eof-int64(segmentFooterLength))
if err != nil {
return nil, err
}
s := segmentReader{
rd: l.rd,
}
s.head, err = ReadHead(head)
s.head.end = eof - int64(s.head.headlen)
if err != nil {
return nil, err
}
eof -= int64(s.head.datalen) + int64(s.head.headlen)
l.segments = append(l.segments, s)
}
return l, nil
}
func (l *logFile) Count() int64 {
return int64(len(l.segments))
}
func (l *logFile) LoadSegment(pos int64) (*segmentBytes, error) {
if pos < 0 {
pos = int64(len(l.segments) - 1)
}
if pos > int64(len(l.segments)-1) {
return nil, ErrDecode
}
s := l.segments[pos]
b := make([]byte, s.head.datalen+s.head.headlen)
_, err := l.rd.ReadAt(b, s.head.end-int64(len(b)))
if err != nil {
return nil, err
}
return &segmentBytes{b, -1}, nil
}
func (l *logFile) Find(needle []byte, first bool) (*entryBytes, bool, error) {
var cur, last segmentReader
for _, s := range l.segments {
cur = s
e, err := cur.FirstEntry()
if err != nil {
return nil, false, err
}
k, _ := e.KeyValue()
if first && bytes.Equal(k, needle) {
break
}
if first && bytes.Compare(k, needle) > 0 {
e, ok, err := cur.Find(needle, first)
if ok || err != nil{
return e, ok, err
}
break
}
if !first && bytes.Compare(k, needle) > 0 {
break
}
last = s
}
e, ok, err := last.Find(needle, first)
if ok || err != nil{
return e, ok, err
}
// if by mistake it was not found in the last.. check the next segment.
return cur.Find(needle, first)
}
func (l *logFile) WriteTo(w io.Writer) (int64, error) {
return l.rd.WriteTo(w)
}
type segmentBytes struct {
b []byte
pos int
}
type dataset struct {
rd io.ReaderAt
files []logFile
fs.FS
}
func ReadDataset(fd fs.FS) (*dataset, error) {
panic("not implemented")
}

327
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// SPDX-FileCopyrightText: 2023 Jon Lundy <jon@xuu.cc>
// SPDX-License-Identifier: BSD-3-Clause
package lsm
import (
"bytes"
crand "crypto/rand"
"encoding/base64"
"io"
"io/fs"
"math/rand"
"os"
"sort"
"sync"
"testing"
"time"
"github.com/matryer/is"
)
func TestLargeFile(t *testing.T) {
is := is.New(t)
segCount := 4098
f := randFile(t, 2_000_000, segCount)
sf, err := ReadFile(f)
is.NoErr(err)
is.True(len(sf.segments) <= segCount)
var needle []byte
for i, s := range sf.segments {
e, err := s.FirstEntry()
is.NoErr(err)
k, v := e.KeyValue()
needle = k
t.Logf("Segment-%d: %s = %d", i, k, v)
}
t.Log(f.Stat())
tt, ok, err := sf.Find(needle, true)
is.NoErr(err)
is.True(ok)
key, val := tt.KeyValue()
t.Log(string(key), val)
tt, ok, err = sf.Find([]byte("needle"), false)
is.NoErr(err)
is.True(!ok)
key, val = tt.KeyValue()
t.Log(string(key), val)
tt, ok, err = sf.Find([]byte{'\xff'}, false)
is.NoErr(err)
is.True(!ok)
key, val = tt.KeyValue()
t.Log(string(key), val)
}
func TestLargeFileDisk(t *testing.T) {
is := is.New(t)
segCount := 4098
t.Log("generate large file")
f := randFile(t, 2_000_000, segCount)
fd, err := os.CreateTemp("", "sst*")
is.NoErr(err)
defer func() { t.Log("cleanup:", fd.Name()); fd.Close(); os.Remove(fd.Name()) }()
t.Log("write file:", fd.Name())
_, err = io.Copy(fd, f)
is.NoErr(err)
fd.Seek(0, 0)
sf, err := ReadFile(fd)
is.NoErr(err)
is.True(len(sf.segments) <= segCount)
var needle []byte
for i, s := range sf.segments {
e, err := s.FirstEntry()
is.NoErr(err)
k, v := e.KeyValue()
needle = k
ok, err := s.VerifyHash()
is.NoErr(err)
t.Logf("Segment-%d: %s = %d %t", i, k, v, ok)
is.True(ok)
}
t.Log(f.Stat())
tt, ok, err := sf.Find(needle, false)
is.NoErr(err)
is.True(ok)
key, val := tt.KeyValue()
t.Log(string(key), val)
tt, ok, err = sf.Find([]byte("needle"), false)
is.NoErr(err)
is.True(!ok)
key, val = tt.KeyValue()
t.Log(string(key), val)
tt, ok, err = sf.Find([]byte{'\xff'}, false)
is.NoErr(err)
is.True(!ok)
key, val = tt.KeyValue()
t.Log(string(key), val)
}
func BenchmarkLargeFile(b *testing.B) {
segCount := 4098 / 4
f := randFile(b, 2_000_000, segCount)
sf, err := ReadFile(f)
if err != nil {
b.Error(err)
}
key := make([]byte, 5)
keys := make([][]byte, b.N)
for i := range keys {
_, err = crand.Read(key)
if err != nil {
b.Error(err)
}
keys[i] = []byte(base64.RawURLEncoding.EncodeToString(key))
}
b.Log("ready", b.N)
b.ResetTimer()
okays := 0
each := b.N / 10
for n := 0; n < b.N; n++ {
if each > 0 && n%each == 0 {
b.Log(n)
}
_, ok, err := sf.Find(keys[n], false)
if err != nil {
b.Error(err)
}
if ok {
okays++
}
}
b.Log("okays=", b.N, okays)
}
// TestFindRange is an initial range find for start and stop of a range of needles.
// TODO: start the second query from where the first left off. Use an iterator?
func TestFindRange(t *testing.T) {
is := is.New(t)
f := basicFile(t,
entries{
{"AD", 5},
{"AC", 5},
{"AB", 4},
{"AB", 3},
},
entries{
{"AB", 2},
{"AA", 1},
},
)
sf, err := ReadFile(f)
is.NoErr(err)
var ok bool
var first, last *entryBytes
first, ok, err = sf.Find([]byte("AB"), true)
is.NoErr(err)
key, val := first.KeyValue()
t.Log(string(key), val)
is.True(ok)
is.Equal(key, []byte("AB"))
is.Equal(val, uint64(2))
last, ok, err = sf.Find([]byte("AB"), false)
is.NoErr(err)
key, val = last.KeyValue()
t.Log(string(key), val)
is.True(ok)
is.Equal(key, []byte("AB"))
is.Equal(val, uint64(4))
last, ok, err = sf.Find([]byte("AC"), false)
is.NoErr(err)
key, val = last.KeyValue()
t.Log(string(key), val)
is.True(ok)
is.Equal(key, []byte("AC"))
is.Equal(val, uint64(5))
}
func randFile(t interface {
Helper()
Error(...any)
}, size int, segments int) fs.File {
t.Helper()
lis := make(listEntries, size)
for i := range lis {
key := make([]byte, 5)
_, err := crand.Read(key)
if err != nil {
t.Error(err)
}
key = []byte(base64.RawURLEncoding.EncodeToString(key))
// key := []byte(fmt.Sprintf("key-%05d", i))
lis[i] = NewKeyValue(key, rand.Uint64()%16_777_216)
}
sort.Sort(sort.Reverse(&lis))
each := size / segments
if size%segments != 0 {
each++
}
split := make([]listEntries, segments)
for i := range split {
if (i+1)*each > len(lis) {
split[i] = lis[i*each : i*each+len(lis[i*each:])]
split = split[:i+1]
break
}
split[i] = lis[i*each : (i+1)*each]
}
var b bytes.Buffer
for _, s := range split {
s.WriteTo(&b)
}
return NewFile(b.Bytes())
}
type fakeStat struct {
size int64
}
// IsDir implements fs.FileInfo.
func (*fakeStat) IsDir() bool {
panic("unimplemented")
}
// ModTime implements fs.FileInfo.
func (*fakeStat) ModTime() time.Time {
panic("unimplemented")
}
// Mode implements fs.FileInfo.
func (*fakeStat) Mode() fs.FileMode {
panic("unimplemented")
}
// Name implements fs.FileInfo.
func (*fakeStat) Name() string {
panic("unimplemented")
}
// Size implements fs.FileInfo.
func (s *fakeStat) Size() int64 {
return s.size
}
// Sys implements fs.FileInfo.
func (*fakeStat) Sys() any {
panic("unimplemented")
}
var _ fs.FileInfo = (*fakeStat)(nil)
type rd interface {
io.ReaderAt
io.Reader
}
type fakeFile struct {
stat func() fs.FileInfo
rd
}
func (fakeFile) Close() error { return nil }
func (f fakeFile) Stat() (fs.FileInfo, error) { return f.stat(), nil }
func NewFile(b ...[]byte) fs.File {
in := bytes.Join(b, nil)
rd := bytes.NewReader(in)
size := int64(len(in))
return &fakeFile{stat: func() fs.FileInfo { return &fakeStat{size: size} }, rd: rd}
}
func NewFileFromReader(rd *bytes.Reader) fs.File {
return &fakeFile{stat: func() fs.FileInfo { return &fakeStat{size: int64(rd.Len())} }, rd: rd}
}
type fakeFS struct {
files map[string]*fakeFile
mu sync.RWMutex
}
// Open implements fs.FS.
func (f *fakeFS) Open(name string) (fs.File, error) {
f.mu.RLock()
defer f.mu.RUnlock()
if file, ok := f.files[name]; ok {
return file, nil
}
return nil, fs.ErrNotExist
}
var _ fs.FS = (*fakeFS)(nil)

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package app
import (
"context"
"reflect"
"testing"
"go.sour.is/pkg/mercury"
"go.sour.is/pkg/ident"
)
type mockUser struct {
roles map[string]struct{}
ident.SessionInfo
}
func (m *mockUser) Identity() string { return "user" }
func (m *mockUser) HasRole(roles ...string) bool {
var found bool
for _, role := range roles {
if _, ok := m.roles[role]; ok {
found = true
}
}
return found
}
func Test_appConfig_GetRules(t *testing.T) {
type args struct {
u ident.Ident
}
tests := []struct {
name string
args args
wantLis mercury.Rules
}{
{"normal", args{&mockUser{}}, nil},
{
"admin",
args{
&mockUser{
SessionInfo: ident.SessionInfo{Active: true},
roles: map[string]struct{}{"admin": {}},
},
},
mercury.Rules{
mercury.Rule{
Role: "read",
Type: "NS",
Match: "mercury.source.*",
},
mercury.Rule{
Role: "read",
Type: "NS",
Match: "mercury.priority",
},
mercury.Rule{
Role: "read",
Type: "NS",
Match: "mercury.host",
},
mercury.Rule{
Role: "read",
Type: "NS",
Match: "mercury.environ",
},
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
a := mercuryEnviron{}
if gotLis, _ := a.GetRules(context.TODO(), tt.args.u); !reflect.DeepEqual(gotLis, tt.wantLis) {
t.Errorf("appConfig.GetRules() = %v, want %v", gotLis, tt.wantLis)
}
})
}
}
// func Test_appConfig_GetIndex(t *testing.T) {
// type args struct {
// search mercury.NamespaceSearch
// in1 *rsql.Program
// }
// tests := []struct {
// name string
// args args
// wantLis mercury.Config
// }{
// {"nil", args{
// nil,
// nil,
// }, nil},
// {"app.settings", args{
// mercury.ParseNamespace("app.settings"),
// nil,
// }, mercury.Config{&mercury.Space{Space: "app.settings"}}},
// }
// for _, tt := range tests {
// t.Run(tt.name, func(t *testing.T) {
// a := mercuryEnviron{}
// if gotLis, _ := a.GetIndex(tt.args.search, tt.args.in1); !reflect.DeepEqual(gotLis, tt.wantLis) {
// t.Errorf("appConfig.GetIndex() = %#v, want %#v", gotLis, tt.wantLis)
// }
// })
// }
// }
// func Test_appConfig_GetObjects(t *testing.T) {
// cfg, err := mercury.ParseText(strings.NewReader(`
// @mercury.source.mercury-settings.default
// match :0 *
// `))
// type args struct {
// search mercury.NamespaceSearch
// in1 *rsql.Program
// in2 []string
// }
// tests := []struct {
// name string
// args args
// wantLis mercury.Config
// }{
// {"nil", args{
// nil,
// nil,
// nil,
// }, nil},
// {"app.settings", args{
// mercury.ParseNamespace("app.settings"),
// nil,
// nil,
// }, mercury.Config{
// &mercury.Space{
// Space: "app.settings",
// List: []mercury.Value{{
// Space: "app.settings",
// Name: "app.setting",
// Values: []string{"TRUE"}},
// },
// },
// }},
// }
// for _, tt := range tests {
// cfg, err :=
// t.Run(tt.name, func(t *testing.T) {
// a := appConfig{cfg: }
// if gotLis, _ := a.GetConfig(tt.args.search, tt.args.in1, tt.args.in2); !reflect.DeepEqual(gotLis, tt.wantLis) {
// t.Errorf("appConfig.GetIndex() = %#v, want %#v", gotLis, tt.wantLis)
// }
// })
// }
// }

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@ -0,0 +1,98 @@
package app
import (
"context"
"strings"
"go.sour.is/pkg/mercury"
"go.sour.is/pkg/ident"
)
type mercuryDefault struct {
name string
cfg mercury.SpaceMap
}
var (
_ mercury.GetRules = (*mercuryDefault)(nil)
_ mercury.GetIndex = (*mercuryEnviron)(nil)
_ mercury.GetConfig = (*mercuryEnviron)(nil)
_ mercury.GetRules = (*mercuryEnviron)(nil)
)
// GetRules returns default rules for user role.
func (app *mercuryDefault) GetRules(ctx context.Context, id ident.Ident) (lis mercury.Rules, err error) {
identity := id.Identity()
lis = append(lis,
mercury.Rule{
Role: "write",
Type: "NS",
Match: "mercury.@" + identity,
},
mercury.Rule{
Role: "write",
Type: "NS",
Match: "mercury.@" + identity + ".*",
},
)
groups := groups(identity, &app.cfg)
if s, ok := app.cfg.Space("mercury.policy."+app.name); ok {
for _, p := range s.List {
if groups.Has(p.Name) {
for _, r := range p.Values {
fds := strings.Fields(r)
if len(fds) < 3 {
continue
}
lis = append(lis, mercury.Rule{
Role: fds[0],
Type: fds[1],
Match: fds[2],
})
}
}
}
}
if u, ok := id.(hasRole); groups.Has("admin") || ok && u.HasRole("admin") {
lis = append(lis,
mercury.Rule{
Role: "admin",
Type: "NS",
Match: "*",
},
mercury.Rule{
Role: "write",
Type: "NS",
Match: "*",
},
mercury.Rule{
Role: "admin",
Type: "GR",
Match: "*",
},
)
} else if u.HasRole("write") {
lis = append(lis,
mercury.Rule{
Role: "write",
Type: "NS",
Match: "*",
},
)
} else if u.HasRole("read") {
lis = append(lis,
mercury.Rule{
Role: "read",
Type: "NS",
Match: "*",
},
)
}
return lis, nil
}

295
mercury/app/environ.go Normal file
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package app
import (
"context"
"fmt"
"os"
"os/user"
"sort"
"strings"
"go.sour.is/pkg/ident"
"go.sour.is/pkg/mercury"
"go.sour.is/pkg/set"
)
const (
mercurySource = "mercury.source.*"
mercuryPriority = "mercury.priority"
mercuryHost = "mercury.host"
appDotEnviron = "mercury.environ"
)
var (
mercuryPolicy = func(id string) string { return "mercury.@" + id + ".policy" }
)
func Register(name string, cfg mercury.SpaceMap) {
for _, c := range cfg {
c.Tags = append(c.Tags, "RO")
}
mercury.Registry.Register("mercury-default", func(s *mercury.Space) any { return &mercuryDefault{name: name, cfg: cfg} })
mercury.Registry.Register("mercury-environ", func(s *mercury.Space) any { return &mercuryEnviron{cfg: cfg, lookup: mercury.Registry.GetRules} })
}
type hasRole interface {
HasRole(r ...string) bool
}
type mercuryEnviron struct {
cfg mercury.SpaceMap
lookup func(context.Context, ident.Ident) (mercury.Rules, error)
}
func getSearch(spec mercury.Search) mercury.NamespaceSearch {
return spec.NamespaceSearch
}
// Index returns nil
func (app *mercuryEnviron) GetIndex(ctx context.Context, spec mercury.Search) (lis mercury.Config, err error) {
search := getSearch(spec)
if search.Match(mercurySource) {
for _, s := range app.cfg.ToArray() {
if search.Match(s.Space) {
lis = append(lis, &mercury.Space{Space: s.Space, Tags: []string{"RO"}})
}
}
}
if search.Match(mercuryPriority) {
lis = append(lis, &mercury.Space{Space: mercuryPriority, Tags: []string{"RO"}})
}
if search.Match(mercuryHost) {
lis = append(lis, &mercury.Space{Space: mercuryHost, Tags: []string{"RO"}})
}
if search.Match(appDotEnviron) {
lis = append(lis, &mercury.Space{Space: appDotEnviron, Tags: []string{"RO"}})
}
if id := ident.FromContext(ctx); id != nil {
identity := id.Identity()
match := mercuryPolicy(identity)
if search.Match(match) {
lis = append(lis, &mercury.Space{Space: match, Tags: []string{"RO"}})
}
}
return
}
// Objects returns nil
func (app *mercuryEnviron) GetConfig(ctx context.Context, spec mercury.Search) (lis mercury.Config, err error) {
search := getSearch(spec)
if search.Match(mercurySource) {
for _, s := range app.cfg.ToArray() {
if search.Match(s.Space) {
lis = append(lis, s)
}
}
}
if search.Match(mercuryPriority) {
space := mercury.Space{
Space: mercuryPriority,
Tags: []string{"RO"},
}
// for i, key := range mercury.Registry {
// space.List = append(space.List, mercury.Value{
// Space: appDotPriority,
// Seq: uint64(i),
// Name: key.Match,
// Values: []string{fmt.Sprint(key.Priority)},
// })
// }
lis = append(lis, &space)
}
if search.Match(mercuryHost) {
if usr, err := user.Current(); err == nil {
space := mercury.Space{
Space: mercuryHost,
Tags: []string{"RO"},
}
hostname, _ := os.Hostname()
wd, _ := os.Getwd()
grp, _ := usr.GroupIds()
space.List = []mercury.Value{
{
Space: mercuryHost,
Seq: 1,
Name: "hostname",
Values: []string{hostname},
},
{
Space: mercuryHost,
Seq: 2,
Name: "username",
Values: []string{usr.Username},
},
{
Space: mercuryHost,
Seq: 3,
Name: "uid",
Values: []string{usr.Uid},
},
{
Space: mercuryHost,
Seq: 4,
Name: "gid",
Values: []string{usr.Gid},
},
{
Space: mercuryHost,
Seq: 5,
Name: "display",
Values: []string{usr.Name},
},
{
Space: mercuryHost,
Seq: 6,
Name: "home",
Values: []string{usr.HomeDir},
},
{
Space: mercuryHost,
Seq: 7,
Name: "groups",
Values: grp,
},
{
Space: mercuryHost,
Seq: 8,
Name: "pid",
Values: []string{fmt.Sprintf("%v", os.Getpid())},
},
{
Space: mercuryHost,
Seq: 9,
Name: "wd",
Values: []string{wd},
},
}
lis = append(lis, &space)
}
}
if search.Match(appDotEnviron) {
env := os.Environ()
space := mercury.Space{
Space: appDotEnviron,
Tags: []string{"RO"},
}
sort.Strings(env)
for i, s := range env {
key, val, _ := strings.Cut(s, "=")
vals := []string{val}
if strings.Contains(key, "PATH") || strings.Contains(key, "XDG") {
vals = strings.Split(val, ":")
}
space.List = append(space.List, mercury.Value{
Space: appDotEnviron,
Seq: uint64(i),
Name: key,
Values: vals,
})
}
lis = append(lis, &space)
}
if id := ident.FromContext(ctx); id != nil {
identity := id.Identity()
groups := groups(identity, &app.cfg)
match := mercuryPolicy(identity)
if search.Match(match) {
space := &mercury.Space{
Space: match,
Tags: []string{"RO"},
}
lis = append(lis, space)
rules, err := app.lookup(ctx, id)
if err != nil {
space.AddNotes(err.Error())
} else {
k := mercury.NewValue("groups")
k.AddValues(strings.Join(groups.Values(), " "))
space.AddKeys(k)
k = mercury.NewValue("rules")
for _, r := range rules {
k.AddValues(strings.Join([]string{r.Role, r.Type, r.Match}, " "))
}
space.AddKeys(k)
}
}
}
return
}
// Rules returns nil
func (app *mercuryEnviron) GetRules(ctx context.Context, id ident.Ident) (lis mercury.Rules, err error) {
identity := id.Identity()
lis = append(lis,
mercury.Rule{
Role: "read",
Type: "NS",
Match: mercuryPolicy(identity),
},
)
groups := groups(identity, &app.cfg)
if u, ok := id.(hasRole); groups.Has("admin") || ok && u.HasRole("admin") {
lis = append(lis,
mercury.Rule{
Role: "read",
Type: "NS",
Match: mercurySource,
},
mercury.Rule{
Role: "read",
Type: "NS",
Match: mercuryPriority,
},
mercury.Rule{
Role: "read",
Type: "NS",
Match: mercuryHost,
},
mercury.Rule{
Role: "read",
Type: "NS",
Match: appDotEnviron,
},
)
}
return lis, nil
}
func groups(identity string, cfg *mercury.SpaceMap) set.Set[string] {
groups := set.New[string]()
if s, ok := cfg.Space("mercury.groups"); ok {
for _, g := range s.List {
for _, v := range g.Values {
for _, u := range strings.Fields(v) {
if u == identity {
groups.Add(g.Name)
}
}
}
}
}
return groups
}

63
mercury/http/notify.go Normal file
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package http
import (
"bytes"
"context"
"crypto/tls"
"crypto/x509"
"fmt"
"net/http"
"go.sour.is/pkg/lg"
"go.sour.is/pkg/mercury"
)
type httpNotify struct{}
func (httpNotify) SendNotify(ctx context.Context, n mercury.Notify) error {
ctx, span := lg.Span(ctx)
defer span.End()
cl := &http.Client{}
caCertPool, err := x509.SystemCertPool()
if err != nil {
caCertPool = x509.NewCertPool()
}
// Setup HTTPS client
tlsConfig := &tls.Config{
RootCAs: caCertPool,
}
transport := &http.Transport{TLSClientConfig: tlsConfig}
cl.Transport = transport
var req *http.Request
req, err = http.NewRequestWithContext(ctx, n.Method, n.URL, bytes.NewBufferString(""))
if err != nil {
span.RecordError(err)
return err
}
req.Header.Set("content-type", "application/json")
span.AddEvent(fmt.Sprint("URL: ", n.URL))
res, err := cl.Do(req)
if err != nil {
span.RecordError(err)
return err
}
res.Body.Close()
span.AddEvent(fmt.Sprint(res.Status))
if res.StatusCode != 200 {
span.RecordError(err)
err = fmt.Errorf("unable to read config")
return err
}
return nil
}
func Register() {
mercury.Registry.Register("http-notify", func(s *mercury.Space) any { return httpNotify{} })
}

727
mercury/mercury.go Normal file
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package mercury
import (
"fmt"
"path/filepath"
"strings"
"golang.org/x/exp/maps"
)
type Config []*Space
func NewConfig(spaces ...*Space) Config {
return spaces
}
func (c *Config) AddSpace(spaces ...*Space) *Config {
*c = append(*c, spaces...)
return c
}
// Len implements Len for sort.interface
func (lis Config) Len() int {
return len(lis)
}
// Less implements Less for sort.interface
func (lis Config) Less(i, j int) bool {
return lis[i].Space < lis[j].Space
}
// Swap implements Swap for sort.interface
func (lis Config) Swap(i, j int) { lis[i], lis[j] = lis[j], lis[i] }
// StringList returns the space names as a list
func (lis Config) StringList() string {
var buf strings.Builder
for _, o := range lis {
if len(o.Notes) > 0 {
buf.WriteString("# ")
buf.WriteString(strings.Join(o.Notes, "\n# "))
buf.WriteRune('\n')
}
buf.WriteRune('@')
buf.WriteString(o.Space)
if len(o.Tags) > 0 {
buf.WriteRune(' ')
buf.WriteString(strings.Join(o.Tags, " "))
}
buf.WriteRune('\n')
}
return buf.String()
}
// ToSpaceMap formats as SpaceMap
func (lis Config) ToSpaceMap() SpaceMap {
out := make(SpaceMap)
for _, c := range lis {
out[c.Space] = c
}
return out
}
// String format config as string
func (lis Config) String() string {
var buf strings.Builder
for i, o := range lis {
attLen := 0
tagLen := 0
if i > 0 {
buf.WriteRune('\n')
}
for _, v := range o.List {
l := len(v.Name)
if attLen <= l {
attLen = l
}
t := len(strings.Join(v.Tags, " "))
if tagLen <= t {
tagLen = t
}
}
if len(o.Notes) > 0 {
buf.WriteString("# ")
buf.WriteString(strings.Join(o.Notes, "\n# "))
buf.WriteRune('\n')
}
buf.WriteRune('@')
buf.WriteString(o.Space)
if len(o.Tags) > 0 {
buf.WriteRune(' ')
buf.WriteString(strings.Join(o.Tags, " "))
}
buf.WriteRune('\n')
for _, v := range o.List {
if len(v.Notes) > 0 {
buf.WriteString("# ")
buf.WriteString(strings.Join(v.Notes, "\n# "))
buf.WriteString("\n")
}
buf.WriteString(v.Name)
buf.WriteString(strings.Repeat(" ", attLen-len(v.Name)+1))
if len(v.Tags) > 0 {
t := strings.Join(v.Tags, " ")
buf.WriteString(t)
buf.WriteString(strings.Repeat(" ", tagLen-len(t)+1))
} else {
buf.WriteString(strings.Repeat(" ", tagLen+1))
}
switch len(v.Values) {
case 0:
buf.WriteString("\n")
case 1:
buf.WriteString(" :")
buf.WriteString(v.Values[0])
buf.WriteString("\n")
default:
buf.WriteString(" :")
buf.WriteString(v.Values[0])
buf.WriteString("\n")
for _, s := range v.Values[1:] {
buf.WriteString(strings.Repeat(" ", attLen+tagLen+3))
buf.WriteString(":")
buf.WriteString(s)
buf.WriteString("\n")
}
}
}
for _, line := range o.Trailer {
buf.WriteString(line)
buf.WriteRune('\n')
}
}
return buf.String()
}
// EnvString format config as environ
func (lis Config) EnvString() string {
var buf strings.Builder
for _, o := range lis {
for _, v := range o.List {
buf.WriteString(o.Space)
for _, t := range o.Tags {
buf.WriteRune(' ')
buf.WriteString(t)
}
buf.WriteRune(':')
buf.WriteString(v.Name)
for _, t := range v.Tags {
buf.WriteRune(' ')
buf.WriteString(t)
}
switch len(v.Values) {
case 0:
buf.WriteRune('=')
buf.WriteRune('\n')
case 1:
buf.WriteRune('=')
buf.WriteString(v.Values[0])
buf.WriteRune('\n')
default:
buf.WriteRune('+')
buf.WriteRune('=')
buf.WriteString(v.Values[0])
buf.WriteRune('\n')
for _, s := range v.Values[1:] {
buf.WriteString(o.Space)
buf.WriteRune(':')
buf.WriteString(v.Name)
buf.WriteRune('+')
buf.WriteRune('=')
buf.WriteString(s)
buf.WriteRune('\n')
}
}
}
}
return buf.String()
}
// INIString format config as ini
func (lis Config) INIString() string {
var buf strings.Builder
for _, o := range lis {
for _, note := range o.Notes {
buf.WriteString("; ")
buf.WriteString(note)
buf.WriteRune('\n')
}
buf.WriteRune('[')
buf.WriteString(o.Space)
buf.WriteRune(']')
buf.WriteRune('\n')
for _, v := range o.List {
for _, note := range v.Notes {
buf.WriteString("; ")
buf.WriteString(note)
buf.WriteRune('\n')
}
buf.WriteString(v.Name)
switch len(v.Values) {
case 0:
buf.WriteRune('=')
buf.WriteRune('\n')
case 1:
buf.WriteRune('=')
buf.WriteString(v.Values[0])
buf.WriteRune('\n')
default:
buf.WriteRune('[')
buf.WriteRune('0')
buf.WriteRune(']')
buf.WriteRune('=')
buf.WriteString(v.Values[0])
buf.WriteRune('\n')
for i, s := range v.Values[1:] {
buf.WriteString(v.Name)
buf.WriteRune('[')
buf.WriteString(fmt.Sprintf("%d", i))
buf.WriteRune(']')
buf.WriteRune('=')
buf.WriteString(s)
buf.WriteRune('\n')
}
}
}
for _, line := range o.Trailer {
buf.WriteString("; ")
buf.WriteString(line)
buf.WriteRune('\n')
}
buf.WriteRune('\n')
}
return buf.String()
}
// String format config as string
func (lis Config) HTMLString() string {
var buf strings.Builder
for i, o := range lis {
attLen := 0
tagLen := 0
if i > 0 {
buf.WriteRune('\n')
}
for _, v := range o.List {
l := len(v.Name)
if attLen <= l {
attLen = l
}
t := len(strings.Join(v.Tags, " "))
if tagLen <= t {
tagLen = t
}
}
if len(o.Notes) > 0 {
buf.WriteString("<i>")
buf.WriteString("# ")
buf.WriteString(strings.Join(o.Notes, "\n# "))
buf.WriteString("</i>")
buf.WriteRune('\n')
}
buf.WriteString("<strong>")
buf.WriteRune('@')
buf.WriteString(o.Space)
buf.WriteString("</strong>")
if len(o.Tags) > 0 {
buf.WriteRune(' ')
buf.WriteString("<em>")
buf.WriteString(strings.Join(o.Tags, " "))
buf.WriteString("</em>")
}
buf.WriteRune('\n')
for _, v := range o.List {
if len(v.Notes) > 0 {
buf.WriteString("<i>")
buf.WriteString("# ")
buf.WriteString(strings.Join(v.Notes, "\n# "))
buf.WriteString("</i>")
buf.WriteString("\n")
}
buf.WriteString("<dfn>")
buf.WriteString(v.Name)
buf.WriteString("</dfn>")
buf.WriteString(strings.Repeat(" ", attLen-len(v.Name)+1))
if len(v.Tags) > 0 {
t := strings.Join(v.Tags, " ")
buf.WriteString("<em>")
buf.WriteString(t)
buf.WriteString(strings.Repeat(" ", tagLen-len(t)+1))
buf.WriteString("</em>")
} else {
buf.WriteString(strings.Repeat(" ", tagLen+1))
}
switch len(v.Values) {
case 0:
buf.WriteString("\n")
case 1:
buf.WriteString(" :")
buf.WriteString(v.Values[0])
buf.WriteString("\n")
default:
buf.WriteString(" :")
buf.WriteString(v.Values[0])
buf.WriteString("\n")
for _, s := range v.Values[1:] {
buf.WriteString(strings.Repeat(" ", attLen+tagLen+3))
buf.WriteString(":")
buf.WriteString(s)
buf.WriteString("\n")
}
}
}
for _, line := range o.Trailer {
buf.WriteString("<small>")
buf.WriteString(line)
buf.WriteString("</small>")
buf.WriteRune('\n')
}
}
return buf.String()
}
// Space stores a registry of spaces
type Space struct {
Space string `json:"space"`
Tags []string `json:"tags,omitempty"`
Notes []string `json:"notes,omitempty"`
List []Value `json:"list,omitempty"`
Trailer []string `json:"trailer,omitempty"`
}
func NewSpace(space string) *Space {
return &Space{Space: space}
}
// HasTag returns true if needle is found
// If the needle ends with a / it will be treated
// as a prefix for tag meta data.
func (s *Space) HasTag(needle string) bool {
isPrefix := strings.HasSuffix(needle, "/")
for i := range s.Tags {
switch isPrefix {
case true:
if strings.HasPrefix(s.Tags[i], needle) {
return true
}
case false:
if s.Tags[i] == needle {
return true
}
}
}
return false
}
// GetTagMeta retuns the value after a '/' in a tag.
// Tags are in the format 'name' or 'name/value'
// This function returns the value.
func (s *Space) GetTagMeta(needle string, offset int) string {
if !strings.HasSuffix(needle, "/") {
needle += "/"
}
for i := range s.Tags {
if strings.HasPrefix(s.Tags[i], needle) {
if offset > 0 {
offset--
continue
}
return strings.TrimPrefix(s.Tags[i], needle)
}
}
return ""
}
// FirstTagMeta returns the first meta tag value.
func (s *Space) FirstTagMeta(needle string) string {
return s.GetTagMeta(needle, 0)
}
// GetValues that match name
func (s *Space) GetValues(name string) (lis []Value) {
for i := range s.List {
if s.List[i].Name == name {
lis = append(lis, s.List[i])
}
}
return
}
// FirstValue that matches name
func (s *Space) FirstValue(name string) Value {
for i := range s.List {
if s.List[i].Name == name {
return s.List[i]
}
}
return Value{}
}
func (s *Space) SetTags(tags ...string) *Space {
s.Tags = tags
return s
}
func (s *Space) AddTags(tags ...string) *Space {
s.Tags = append(s.Tags, tags...)
return s
}
func (s *Space) SetNotes(notes ...string) *Space {
s.Notes = notes
return s
}
func (s *Space) AddNotes(notes ...string) *Space {
s.Notes = append(s.Notes, notes...)
return s
}
func (s *Space) SetKeys(keys ...*Value) *Space {
for i := range keys {
k := *keys[i]
k.Seq = uint64(i)
s.List = append(s.List, k)
}
return s
}
func (s *Space) AddKeys(keys ...*Value) *Space {
l := uint64(len(s.List))
for i := range keys {
k := *keys[i]
k.Seq = uint64(i) + l
s.List = append(s.List, k)
}
return s
}
// SpaceMap generic map of space values
type SpaceMap map[string]*Space
func (m SpaceMap) Space(name string) (*Space, bool) {
s, ok := m[name]
return s, ok
}
// Rule is a type of rule
type Rule struct {
Role string
Type string
Match string
}
// Rules is a list of rules
type Rules []Rule
// GetNamespaceSearch returns a default search for users rules.
func (r Rules) GetNamespaceSearch() (lis NamespaceSearch) {
for _, o := range r {
if o.Type == "NS" && (o.Role == "read" || o.Role == "write") {
lis = append(lis, NamespaceStar(o.Match))
}
}
return
}
// Check if name matches rule
func (r Rule) Check(name string) bool {
ok, err := filepath.Match(r.Match, name)
if err != nil {
return false
}
return ok
}
// CheckNamespace verifies user has access
func (r Rules) CheckNamespace(search NamespaceSearch) bool {
for _, ns := range search {
if !r.GetRoles("NS", ns.Value()).HasRole("read", "write") {
return false
}
}
return true
}
func (r Rules) Less(i, j int) bool {
si, sj := scoreRule(r[i]), scoreRule(r[j])
if si != sj {
return si < sj
}
return len(r[i].Match) < len(r[j].Match)
}
func (r Rules) Swap(i, j int) { r[i], r[j] = r[j], r[i] }
func (r Rules) Len() int { return len(r) }
func scoreRule(r Rule) int {
score := 0
if r.Type == "GR" {
score += 1000
}
switch r.Role {
case "admin":
score += 100
case "write":
score += 50
case "read":
score += 10
}
return score
}
// ReduceSearch verifies user has access
func (r Rules) ReduceSearch(search NamespaceSearch) (out NamespaceSearch) {
rules := r.GetNamespaceSearch()
skip := make(map[string]struct{})
out = make(NamespaceSearch, 0, len(rules))
for _, rule := range rules {
if _, ok := skip[rule.Raw()]; ok {
continue
}
for _, ck := range search {
if _, ok := skip[ck.Raw()]; ok {
continue
} else if rule.Match(ck.Raw()) {
skip[ck.Raw()] = struct{}{}
out = append(out, ck)
} else if ck.Match(rule.Raw()) {
out = append(out, rule)
}
}
}
return
}
// Roles is a list of roles for a resource
type Roles map[string]struct{}
// GetRoles returns a list of Roles
func (r Rules) GetRoles(typ, name string) (lis Roles) {
lis = make(Roles)
for _, o := range r {
if typ == o.Type && o.Check(name) {
lis[o.Role] = struct{}{}
}
}
return
}
// HasRole is a valid role
func (r Roles) HasRole(roles ...string) bool {
for _, role := range roles {
if _, ok := r[role]; ok {
return true
}
}
return false
}
// ToArray converts SpaceMap to ArraySpace
func (m SpaceMap) ToArray() Config {
a := make(Config, 0, len(m))
for _, s := range m {
a = append(a, s)
}
return a
}
func (m *SpaceMap) MergeMap(s SpaceMap) {
m.Merge(maps.Values(s)...)
}
func (m *SpaceMap) Merge(lis ...*Space) {
for _, s := range lis {
// Only accept first version based on priority.
if _, ok := (*m)[s.Space]; ok {
continue
}
(*m)[s.Space] = s
// // Merge values together.
// c, ok := (*m)[s.Space]
// if ok {
// c = &Space{}
// }
// c.Notes = append(c.Notes, s.Notes...)
// c.Tags = append(c.Tags, s.Tags...)
// last := c.List[len(c.List)-1].Seq
// for i := range s.List {
// v := s.List[i]
// v.Seq += last
// c.List = append(c.List, v)
// }
// (*m)[s.Space] = c
}
}
// Value stores the attributes for space values
type Value struct {
Space string `json:"-" db:"space"`
Seq uint64 `json:"-" db:"seq"`
Name string `json:"name"`
Values []string `json:"values"`
Notes []string `json:"notes"`
Tags []string `json:"tags"`
}
// func (v *Value) ID() string {
// return gql.FmtID("MercurySpace:%v:%v", v.Space, v.Seq)
// }
// HasTag returns true if needle is found
// If the needle ends with a / it will be treated
// as a prefix for tag meta data.
func (v Value) HasTag(needle string) bool {
isPrefix := strings.HasSuffix(needle, "/")
for i := range v.Tags {
switch isPrefix {
case true:
if strings.HasPrefix(v.Tags[i], needle) {
return true
}
case false:
if v.Tags[i] == needle {
return true
}
}
}
return false
}
// GetTagMeta retuns the value after a '/' in a tag.
// Tags are in the format 'name' or 'name/value'
// This function returns the value.
func (v Value) GetTagMeta(needle string, offset int) string {
if !strings.HasSuffix(needle, "/") {
needle += "/"
}
for i := range v.Tags {
if strings.HasPrefix(v.Tags[i], needle) {
if offset > 0 {
offset--
continue
}
return strings.TrimPrefix(v.Tags[i], needle)
}
}
return ""
}
// FirstTagMeta returns the first meta tag value.
func (v Value) FirstTagMeta(needle string) string {
return v.GetTagMeta(needle, 0)
}
// First value in array.
func (v Value) First() string {
if len(v.Values) < 1 {
return ""
}
return v.Values[0]
}
// Join values with newlines.
func (v Value) Join() string {
return strings.Join(v.Values, "\n")
}
func NewValue(name string) *Value {
return &Value{Name: name}
}
func (v *Value) SetTags(tags ...string) *Value {
v.Tags = tags
return v
}
func (v *Value) AddTags(tags ...string) *Value {
v.Tags = append(v.Tags, tags...)
return v
}
func (v *Value) SetNotes(notes ...string) *Value {
v.Notes = notes
return v
}
func (v *Value) AddNotes(notes ...string) *Value {
v.Notes = append(v.Notes, notes...)
return v
}
func (v *Value) SetValues(values ...string) *Value {
v.Values = values
return v
}
func (v *Value) AddValues(values ...string) *Value {
v.Values = append(v.Values, values...)
return v
}

27
mercury/mqtt/notify.go Normal file
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package mqtt
import (
"context"
"go.sour.is/pkg/lg"
"go.sour.is/pkg/mercury"
)
type mqttNotify struct{}
func (mqttNotify) SendNotify(ctx context.Context, n mercury.Notify) {
_, span := lg.Span(ctx)
defer span.End()
// var m mqtt.Message
// m, err = mqtt.NewMessage(n.URL, n)
// if err != nil {
// return
// }
// log.Debug(n)
// err = mqtt.Publish(m)
// return
}
func Register() {
mercury.Registry.Register("mqtt-notify", func(s *mercury.Space) any { return &mqttNotify{} })
}

127
mercury/parse.go Normal file
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package mercury
import (
"bufio"
"io"
"log"
"strings"
)
func ParseText(body io.Reader) (config SpaceMap, err error) {
config = make(SpaceMap)
var space string
var name string
var tags []string
var notes []string
var seq uint64
scanner := bufio.NewScanner(body)
for scanner.Scan() {
line := scanner.Text()
if len(line) == 0 {
continue
}
if strings.HasPrefix(line, "#") {
notes = append(notes, strings.TrimPrefix(line, "# "))
continue
}
if strings.HasPrefix(line, "@") {
var c *Space
var ok bool
sp := strings.Fields(strings.TrimPrefix(line, "@"))
space = sp[0]
if c, ok = config[space]; !ok {
c = &Space{Space: space}
}
c.Notes = append(make([]string, 0, len(notes)), notes...)
c.Tags = append(make([]string, 0, len(sp[1:])), sp[1:]...)
config[space] = c
notes = notes[:0]
tags = tags[:0]
continue
}
if strings.HasPrefix(line, "----") && strings.HasSuffix(line, "----") {
var trailer []string
trailer = append(trailer, line)
for scanner.Scan() {
line = scanner.Text()
trailer = append(trailer, line)
if strings.HasPrefix(line, "----") && strings.HasSuffix(line, "----") {
break
}
}
c, ok := config[space]
if !ok {
c = &Space{Space: space}
}
log.Println(trailer)
c.Trailer = append(c.Trailer, trailer...)
config[space] = c
continue
}
if space == "" {
continue
}
sp := strings.SplitN(line, ":", 2)
if len(sp) < 2 {
continue
}
if strings.TrimSpace(sp[0]) == "" {
c, ok := config[space]
if !ok {
c = &Space{Space: space}
}
c.List[len(c.List)-1].Values = append(c.List[len(c.List)-1].Values, sp[1])
config[space] = c
continue
}
fields := strings.Fields(sp[0])
name = fields[0]
if len(fields) > 1 {
tags = fields[1:]
}
c, ok := config[space]
if !ok {
c = &Space{Space: space}
}
seq++
c.List = append(
c.List,
Value{
Seq: seq,
Name: name,
Tags: append(make([]string, 0, len(tags)), tags...),
Notes: append(make([]string, 0, len(notes)), notes...),
Values: []string{sp[1]},
},
)
config[space] = c
notes = notes[:0]
tags = tags[:0]
}
if err = scanner.Err(); err != nil {
return nil, err
}
return
}

28
mercury/parse_test.go Normal file
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package mercury_test
import (
"strings"
"testing"
"github.com/matryer/is"
"go.sour.is/pkg/mercury"
)
func TestParseText(t *testing.T) {
is := is.New(t)
sm, err := mercury.ParseText(strings.NewReader(`
@test.sign
key :value1
-----BEGIN SSH SIGNATURE-----
U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgZ+OuJYdd3UiUbyBuO1RlsQR20a
Qm5mKneuMxRjGo3zkAAAAEZmlsZQAAAAAAAAAGc2hhNTEyAAAAUwAAAAtzc2gtZWQyNTUx
OQAAAED8T4C6WILXYZ1KxqDIlVhlrAEjr1Vc+tn8ypcVM3bN7iOexVvuUuvm90nr8eEwKU
acrdDxmq2S+oysQbK+pMUE
-----END SSH SIGNATURE-----
`))
is.NoErr(err)
for _, c := range sm {
is.Equal(len(c.Trailer), 6)
}
}

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47
mercury/public/index.html Normal file
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<!DOCTYPE html>
<html>
<head>
<title>☿ Mercury ☿</title>
<script src="https://unpkg.com/htmx.org@2.0.0-alpha1/dist/htmx.min.js"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/firacode@6.2.0/distr/fira_code.css" />
<link rel="stylesheet" href="/style.css" />
</head>
<body>
<header>
<nav style="position: absolute; top:0; right:50px" hx-trigger="load" hx-get="/ident"></nav>
<h1>☿ Mercury ☿</h1>
</header>
<div class="container">
<div>
<form class="search" hx-get="/api/v1/mercury/config" hx-target="#config-results"
hx-headers='{"Accept": "text/html"}''>
<div>@</div>
<input id="space-config" name="space" type="text" placeholder="Space...">
<button type="submit">Load</button>
</form>
<code tabindex="0"><pre id="config-results"></pre></code>
</div>
<div>
<form class="edit" hx-post="/api/v1/mercury/config" hx-target="#space-saved" hx-encoding="multipart/form-data">
<button type="submit">Save</button>
<br />
<textarea name="content" rows="45" wrap="off"
onkeyup="if (this.scrollHeight > this.clientHeight) this.style.height = this.scrollHeight + ' px';"
style="overflow:auto; transition: height 0.2s ease-out;"></textarea>
</form>
<pre id="space-saved"></pre>
</div>
</div>
<footer>
sour.is 🅭2024
<span hx-trigger="load" hx-get="/api/v1/app-info"></span>
</footer>
</body>
</html>

218
mercury/public/style.css Normal file
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* {
font-weight: lighter;
font-family: 'fira code', monospace;
}
body {
margin: 0;
min-height: 100vh;
background: rgb(210, 221, 240);
}
header {
margin: 0 50px;
background: rgb(63, 94, 251);
background: radial-gradient(circle, rgba(63, 94, 251, 1) 0%, rgba(252, 70, 107, 1) 100%);
height: 100px;
user-select: none;
}
h1 {
text-align: center;
color: white;
line-height: 100px;
margin: 0;
}
input,
textarea {
font-size: small;
border: 2px solid cornflowerblue;
}
input.invalid {
border-color: red;
}
button {
border: 2px solid cornflowerblue;
}
code,
pre {
font-size: small;
-webkit-user-select: text;
user-select: text;
}
code strong {
font-weight: bold;
}
code dfn {
color: green
}
code i {
color: grey
}
code em {
color: orangered;
}
code small {
font-size-adjust: 50%;
color: orange;
}
code:focus {
animation: select 100ms step-end forwards;
}
footer {
position: fixed;
font-size: x-small;
bottom: 0;
left: 0;
right: 0;
height: 1em;
padding: 4px;
color: white;
border-top: 1px solid black;
background: cornflowerblue;
}
footer>span {
float: right;
}
.container {
margin: 0 50px;
display: grid;
min-height: 100vh;
}
.container .open {
grid-template-columns: 1fr 1fr;
}
.container>div {
overflow: auto;
padding: 10px;
background-color: white;
border: 0px ;
}
.container>div>code {
-webkit-user-select: all;
/* for Safari */
user-select: all;
}
.search {
display: flex
}
.search>div {
background-color: lightgrey;
border-radius: 5px 0px 0px 5px;
border: 2px solid cornflowerblue;
border-right: 0;
user-select: none;
padding: 0 2px;
}
.search>button {
border-left: 0;
}
.search>div {
line-height: 30px;
}
.search>input {
flex-grow: 5;
}
.search>button {
flex-grow: 2;
border-radius: 0px 5px 5px 0px;
}
.edit {
display: grid;
grid-template-columns: 1fr;
}
.edit>button {
line-height: 28px;
border-bottom: 0;
border-radius: 5px 5px 0 0;
}
.edit>textarea {
margin-top: 0;
border-radius: 0 0 5px 5px;
}
@keyframes select {
to {
-webkit-user-select: text;
user-select: text;
}
}
@media (prefers-color-scheme: dark) {
html, body {
color: white;
background: #111
}
header {
background: #111;
background: radial-gradient(circle, rgba(2, 0, 36, 1) 0%, rgba(7, 80, 29, 1) 35%, rgba(0, 0, 0, 1) 100%);
}
h1 {
color: white;
}
.container>div {
background: #111;
/* background: linear-gradient(304deg, rgba(2, 0, 36, 1) 0%, rgba(77, 77, 77, 1) 18%, rgba(0, 0, 0, 1) 100%); */
border: 2px solid rgb(117, 117, 117);
}
.search>div {
background-color: grey;
border-color: rgb(117, 117, 117);
}
button {
color: white;
background: rgba(7, 80, 29, 1);
border: 2px solid rgb(117, 117, 117);
}
button:hover {
background: rgb(11, 121, 44);
}
button:active {
background: rgb(5, 59, 21);
}
input,
textarea {
color: white;
background-color: #111;
border: 2px solid rgb(117, 117, 117);
}
footer {
color: white;
border-top: 1px solid white;
background: #222;
}
}

420
mercury/registry.go Normal file
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package mercury
import (
"context"
"fmt"
"log"
"path/filepath"
"sort"
"strconv"
"strings"
"go.sour.is/pkg/ident"
"go.sour.is/pkg/lg"
"go.sour.is/pkg/set"
"golang.org/x/sync/errgroup"
)
type GetIndex interface {
GetIndex(context.Context, Search) (Config, error)
}
type GetConfig interface {
GetConfig(context.Context, Search) (Config, error)
}
type WriteConfig interface {
WriteConfig(context.Context, Config) error
}
type GetRules interface {
GetRules(context.Context, ident.Ident) (Rules, error)
}
type GetNotify interface {
GetNotify(context.Context, string) (ListNotify, error)
}
type SendNotify interface {
SendNotify(context.Context, Notify) error
}
// type nobody struct{}
// func (nobody) IsActive() bool { return true }
// func (nobody) Identity() string { return "xuu" }
// func (nobody) HasRole(r ...string) bool { return true }
func (reg *registry) accessFilter(rules Rules, lis Config) (out Config, err error) {
accessList := make(map[string]struct{})
for _, o := range lis {
if _, ok := accessList[o.Space]; ok {
out = append(out, o)
continue
}
if role := rules.GetRoles("NS", o.Space); role.HasRole("read", "write") && !role.HasRole("deny") {
accessList[o.Space] = struct{}{}
out = append(out, o)
}
}
return
}
// HandlerItem a single handler matching
type matcher[T any] struct {
Name string
Match Search
Priority int
Handler T
}
type matchers struct {
getIndex []matcher[GetIndex]
getConfig []matcher[GetConfig]
writeConfig []matcher[WriteConfig]
getRules []matcher[GetRules]
getNotify []matcher[GetNotify]
sendNotify []matcher[SendNotify]
}
// registry a list of handlers
type registry struct {
handlers map[string]func(*Space) any
matchers matchers
}
func (m matcher[T]) String() string {
return fmt.Sprintf("%d: %s", m.Priority, m.Match)
}
// Registry handler
var Registry *registry = &registry{}
func (r registry) String() string {
var buf strings.Builder
for h := range r.handlers {
buf.WriteString(h)
buf.WriteRune('\n')
}
return buf.String()
}
func (r *registry) resetMatchers() {
r.matchers.getIndex = r.matchers.getIndex[:0]
r.matchers.getConfig = r.matchers.getConfig[:0]
r.matchers.writeConfig = r.matchers.writeConfig[:0]
r.matchers.getRules = r.matchers.getRules[:0]
r.matchers.getNotify = r.matchers.getNotify[:0]
r.matchers.sendNotify = r.matchers.sendNotify[:0]
}
func (r *registry) sortMatchers() {
sort.Slice(r.matchers.getConfig, func(i, j int) bool { return r.matchers.getConfig[i].Priority < r.matchers.getConfig[j].Priority })
sort.Slice(r.matchers.getIndex, func(i, j int) bool { return r.matchers.getIndex[i].Priority < r.matchers.getIndex[j].Priority })
sort.Slice(r.matchers.writeConfig, func(i, j int) bool { return r.matchers.writeConfig[i].Priority < r.matchers.writeConfig[j].Priority })
sort.Slice(r.matchers.getRules, func(i, j int) bool { return r.matchers.getRules[i].Priority < r.matchers.getRules[j].Priority })
sort.Slice(r.matchers.getNotify, func(i, j int) bool { return r.matchers.getNotify[i].Priority < r.matchers.getNotify[j].Priority })
sort.Slice(r.matchers.sendNotify, func(i, j int) bool { return r.matchers.sendNotify[i].Priority < r.matchers.sendNotify[j].Priority })
}
func (r *registry) Register(name string, h func(*Space) any) {
if r.handlers == nil {
r.handlers = make(map[string]func(*Space) any)
}
r.handlers[name] = h
}
func (r *registry) Configure(m SpaceMap) error {
r.resetMatchers()
for space, c := range m {
log.Println("configure: ", space)
if strings.HasPrefix(space, "mercury.source.") {
space = strings.TrimPrefix(space, "mercury.source.")
handler, name, _ := strings.Cut(space, ".")
matches := c.FirstValue("match")
readonly := c.HasTag("readonly")
for _, match := range matches.Values {
ps := strings.Fields(match)
priority, err := strconv.Atoi(ps[0])
if err != nil {
return err
}
err = r.add(name, handler, strings.Join(ps[1:],"|"), priority, c, readonly)
if err != nil {
return err
}
}
}
if strings.HasPrefix(space, "mercury.output.") {
space = strings.TrimPrefix(space, "mercury.output.")
handler, name, _ := strings.Cut(space, ".")
matches := c.FirstValue("match")
for _, match := range matches.Values {
ps := strings.Fields(match)
priority, err := strconv.Atoi(ps[0])
if err != nil {
return err
}
err = r.add(name, handler, strings.Join(ps[1:],"|"), priority, c, false)
if err != nil {
return err
}
}
}
}
r.sortMatchers()
return nil
}
// Register add a handler to registry
func (r *registry) add(name, handler, match string, priority int, cfg *Space, readonly bool) error {
log.Println("mercury regster", "match", match, "pri", priority)
mkHandler, ok := r.handlers[handler]
if !ok {
return fmt.Errorf("handler not registered: %s", handler)
}
hdlr := mkHandler(cfg)
if err, ok := hdlr.(error); ok {
return fmt.Errorf("%w: failed to config %s as handler: %s", err, name, handler)
}
if hdlr == nil {
return fmt.Errorf("failed to config %s as handler: %s", name, handler)
}
if hdlr, ok := hdlr.(GetIndex); ok {
r.matchers.getIndex = append(
r.matchers.getIndex,
matcher[GetIndex]{Name: name, Match: ParseSearch(match), Priority: priority, Handler: hdlr},
)
}
if hdlr, ok := hdlr.(GetConfig); ok {
r.matchers.getConfig = append(
r.matchers.getConfig,
matcher[GetConfig]{Name: name, Match: ParseSearch(match), Priority: priority, Handler: hdlr},
)
}
if hdlr, ok := hdlr.(WriteConfig); !readonly && ok {
r.matchers.writeConfig = append(
r.matchers.writeConfig,
matcher[WriteConfig]{Name: name, Match: ParseSearch(match), Priority: priority, Handler: hdlr},
)
}
if hdlr, ok := hdlr.(GetRules); ok {
r.matchers.getRules = append(
r.matchers.getRules,
matcher[GetRules]{Name: name, Match: ParseSearch(match), Priority: priority, Handler: hdlr},
)
}
if hdlr, ok := hdlr.(GetNotify); ok {
r.matchers.getNotify = append(
r.matchers.getNotify,
matcher[GetNotify]{Name: name, Match: ParseSearch(match), Priority: priority, Handler: hdlr},
)
}
if hdlr, ok := hdlr.(SendNotify); ok {
r.matchers.sendNotify = append(
r.matchers.sendNotify,
matcher[SendNotify]{Name: name, Match: ParseSearch(match), Priority: priority, Handler: hdlr},
)
}
return nil
}
func getMatches(search Search, matchers matchers) []Search {
matches := make([]Search, len(matchers.getIndex))
for _, n := range search.NamespaceSearch {
for i, hdlr := range matchers.getIndex {
if hdlr.Match.Match(n.Raw()) {
matches[i].NamespaceSearch = append(matches[i].NamespaceSearch, n)
matches[i].Count = search.Count
matches[i].Cursor = search.Cursor // need to decode cursor for the match
matches[i].Fields = search.Fields
matches[i].Find = search.Find
}
}
}
return matches
}
// GetIndex query each handler that match namespace.
func (r *registry) GetIndex(ctx context.Context, search Search) (c Config, err error) {
ctx, span := lg.Span(ctx)
defer span.End()
matches := getMatches(search, r.matchers)
wg, ctx := errgroup.WithContext(ctx)
slots := make(chan Config, len(r.matchers.getConfig))
wg.Go(func() error {
i := 0
for lis := range slots {
c = append(c, lis...)
i++
if i > len(slots) {
break
}
}
return nil
})
for i, hdlr := range r.matchers.getIndex {
i, hdlr := i, hdlr
wg.Go(func() error {
span.AddEvent(fmt.Sprintf("INDEX %s %s", hdlr.Name, hdlr.Match))
lis, err := hdlr.Handler.GetIndex(ctx, matches[i])
slots <- lis
return err
})
}
err = wg.Wait()
if err != nil {
return nil, err
}
return
}
// Search query each handler with a key=value search
// GetConfig query each handler that match for fully qualified namespaces.
func (r *registry) GetConfig(ctx context.Context, search Search) (Config, error) {
ctx, span := lg.Span(ctx)
defer span.End()
matches := getMatches(search, r.matchers)
m := make(SpaceMap)
for i, hdlr := range r.matchers.getConfig {
if len(matches[i].NamespaceSearch) == 0 {
continue
}
span.AddEvent(fmt.Sprintf("QUERY %s %s", hdlr.Name, hdlr.Match))
lis, err := hdlr.Handler.GetConfig(ctx, matches[i])
if err != nil {
return nil, err
}
m.Merge(lis...)
}
return m.ToArray(), nil
}
// WriteConfig write objects to backends
func (r *registry) WriteConfig(ctx context.Context, spaces Config) error {
ctx, span := lg.Span(ctx)
defer span.End()
matches := make([]Config, len(r.matchers.writeConfig))
for _, s := range spaces {
for i, hdlr := range r.matchers.writeConfig {
if hdlr.Match.Match(s.Space) {
matches[i] = append(matches[i], s)
break
}
}
}
for i, hdlr := range r.matchers.writeConfig {
if len(matches[i]) == 0 {
continue
}
span.AddEvent(fmt.Sprint("WRITE MATCH", hdlr.Name, hdlr.Match))
err := hdlr.Handler.WriteConfig(ctx, matches[i])
if err != nil {
return err
}
}
return nil
}
// GetRules query each of the handlers for rules.
func (r *registry) GetRules(ctx context.Context, user ident.Ident) (Rules, error) {
ctx, span := lg.Span(ctx)
defer span.End()
s := set.New[Rule]()
for _, hdlr := range r.matchers.getRules {
span.AddEvent(fmt.Sprint("RULES", hdlr.Name, hdlr.Match))
lis, err := hdlr.Handler.GetRules(ctx, user)
if err != nil {
return nil, err
}
s.Add(lis...)
}
var rules Rules = s.Values()
sort.Sort(rules)
return rules, nil
}
// GetNotify query each of the handlers for rules.
func (r *registry) GetNotify(ctx context.Context, event string) (ListNotify, error) {
ctx, span := lg.Span(ctx)
defer span.End()
s := set.New[Notify]()
for _, hdlr := range r.matchers.getNotify {
span.AddEvent(fmt.Sprint("GET NOTIFY", hdlr.Name, hdlr.Match))
lis, err := hdlr.Handler.GetNotify(ctx, event)
if err != nil {
return nil, err
}
s.Add(lis...)
}
return s.Values(), nil
}
func (r *registry) SendNotify(ctx context.Context, n Notify) (err error) {
ctx, span := lg.Span(ctx)
defer span.End()
for _, hdlr := range r.matchers.sendNotify {
span.AddEvent(fmt.Sprint("SEND NOTIFY", hdlr.Name, hdlr.Match))
err := hdlr.Handler.SendNotify(ctx, n)
if err != nil {
return err
}
}
return
}
// Check if name matches notify
func (n Notify) Check(name string) bool {
ok, err := filepath.Match(n.Match, name)
if err != nil {
return false
}
return ok
}
// Notify stores the attributes for a registry space
type Notify struct {
Name string
Match string
Event string
Method string
URL string
}
// ListNotify array of notify
type ListNotify []Notify
// Find returns list of notify that match name.
func (ln ListNotify) Find(name string) (lis ListNotify) {
lis = make(ListNotify, 0, len(ln))
for _, o := range ln {
if o.Check(name) {
lis = append(lis, o)
}
}
return
}

277
mercury/routes.go Normal file
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package mercury
import (
"embed"
"encoding/json"
"fmt"
"io/fs"
"log"
"net/http"
"sort"
"strings"
"time"
"github.com/BurntSushi/toml"
"github.com/golang/gddo/httputil"
"go.sour.is/pkg/ident"
"go.sour.is/pkg/lg"
)
type root struct{}
func NewHTTP() *root {
return &root{}
}
//go:embed public
var public embed.FS
func (s *root) RegisterHTTP(mux *http.ServeMux) {
// mux.Handle("/", http.FileServer(http.Dir("./mercury/public")))
public, _ := fs.Sub(public, "public")
mux.Handle("/", http.FileServerFS(public))
}
func (s *root) RegisterAPIv1(mux *http.ServeMux) {
mux.HandleFunc("GET /mercury", s.indexV1)
// mux.HandleFunc("/mercury/config", s.configV1)
mux.HandleFunc("GET /mercury/config", s.configV1)
mux.HandleFunc("POST /mercury/config", s.storeV1)
}
func (s *root) RegisterWellKnown(mux *http.ServeMux) {
s.RegisterAPIv1(mux)
}
func (s *root) configV1(w http.ResponseWriter, r *http.Request) {
if r.Method == http.MethodPost {
s.storeV1(w, r)
return
}
ctx, span := lg.Span(r.Context())
defer span.End()
var id ident.Ident = ident.FromContext(ctx)
if !id.Session().Active {
span.RecordError(fmt.Errorf("NO_AUTH"))
http.Error(w, "NO_AUTH", http.StatusUnauthorized)
return
}
rules, err := Registry.GetRules(ctx, id)
if err != nil {
span.RecordError(err)
http.Error(w, "ERR: "+err.Error(), http.StatusInternalServerError)
return
}
space := r.URL.Query().Get("space")
if space == "" {
space = "*"
}
log.Print("SPC: ", space)
ns := ParseSearch(space)
log.Print("PRE: ", ns)
//ns = rules.ReduceSearch(ns)
log.Print("POST: ", ns)
lis, err := Registry.GetConfig(ctx, ns)
if err != nil {
http.Error(w, "ERR: "+err.Error(), http.StatusInternalServerError)
return
}
lis, err = Registry.accessFilter(rules, lis)
if err != nil {
span.RecordError(err)
http.Error(w, "ERR: "+err.Error(), http.StatusInternalServerError)
return
}
sort.Sort(lis)
var content string
switch httputil.NegotiateContentType(r, []string{
"text/plain",
"text/html",
"application/environ",
"application/ini",
"application/json",
"application/toml",
}, "text/plain") {
case "text/plain":
content = lis.String()
case "text/html":
content = lis.HTMLString()
case "application/environ":
content = lis.EnvString()
case "application/ini":
content = lis.INIString()
case "application/json":
json.NewEncoder(w).Encode(lis)
case "application/toml":
w.WriteHeader(200)
m := make(map[string]map[string][]string)
for _, o := range lis {
if _, ok := m[o.Space]; !ok {
m[o.Space] = make(map[string][]string)
}
for _, v := range o.List {
m[o.Space][v.Name] = append(m[o.Space][v.Name], v.Values...)
}
}
err := toml.NewEncoder(w).Encode(m)
if err != nil {
// log.Error(err)
http.Error(w, "ERR", http.StatusInternalServerError)
return
}
}
fmt.Fprint(w, content)
}
func (s *root) storeV1(w http.ResponseWriter, r *http.Request) {
ctx, span := lg.Span(r.Context())
defer span.End()
var id = ident.FromContext(ctx)
if !id.Session().Active {
span.RecordError(fmt.Errorf("NO_AUTH"))
http.Error(w, "NO_AUTH", http.StatusUnauthorized)
return
}
var config SpaceMap
var err error
contentType, _, _ := strings.Cut(r.Header.Get("Content-Type"), ";")
switch contentType {
case "text/plain":
config, err = ParseText(r.Body)
r.Body.Close()
case "application/x-www-form-urlencoded":
r.ParseForm()
config, err = ParseText(strings.NewReader(r.Form.Get("content")))
case "multipart/form-data":
r.ParseMultipartForm(1 << 20)
config, err = ParseText(strings.NewReader(r.Form.Get("content")))
default:
http.Error(w, "PARSE_ERR", http.StatusUnsupportedMediaType)
return
}
if err != nil {
span.RecordError(err)
http.Error(w, "PARSE_ERR", 400)
return
}
{
rules, err := Registry.GetRules(ctx, id)
if err != nil {
span.RecordError(err)
http.Error(w, "ERR: "+err.Error(), http.StatusInternalServerError)
return
}
notify, err := Registry.GetNotify(ctx, "updated")
if err != nil {
span.RecordError(err)
http.Error(w, "ERR", http.StatusInternalServerError)
return
}
_ = rules
var notifyActive = make(map[string]struct{})
var filteredConfigs Config
for ns, c := range config {
if !rules.GetRoles("NS", ns).HasRole("write") {
span.AddEvent(fmt.Sprint("SKIP", ns))
continue
}
span.AddEvent(fmt.Sprint("SAVE", ns))
for _, n := range notify.Find(ns) {
notifyActive[n.Name] = struct{}{}
}
filteredConfigs = append(filteredConfigs, c)
}
err = Registry.WriteConfig(ctx, filteredConfigs)
if err != nil {
span.RecordError(err)
http.Error(w, "ERR", http.StatusInternalServerError)
return
}
span.AddEvent(fmt.Sprint("SEND NOTIFYS ", notifyActive))
for _, n := range notify {
if _, ok := notifyActive[n.Name]; ok {
err = Registry.SendNotify(ctx, n)
if err != nil {
span.RecordError(err)
http.Error(w, "ERR", http.StatusInternalServerError)
return
}
}
}
span.AddEvent("DONE!")
}
w.WriteHeader(202)
fmt.Fprint(w, "OK")
}
func (s *root) indexV1(w http.ResponseWriter, r *http.Request) {
ctx, span := lg.Span(r.Context())
defer span.End()
var id = ident.FromContext(ctx)
timer := time.Now()
defer func() { fmt.Println(time.Since(timer)) }()
if !id.Session().Active {
span.RecordError(fmt.Errorf("NO_AUTH"))
http.Error(w, "NO_AUTH", http.StatusUnauthorized)
return
}
rules, err := Registry.GetRules(ctx, id)
if err != nil {
span.RecordError(err)
http.Error(w, "ERR: "+err.Error(), http.StatusInternalServerError)
return
}
span.AddEvent(fmt.Sprint(rules))
space := r.URL.Query().Get("space")
if space == "" {
space = "*"
}
ns := ParseSearch(space)
ns.NamespaceSearch = rules.ReduceSearch(ns.NamespaceSearch)
span.AddEvent(ns.String())
lis, err := Registry.GetIndex(ctx, ns)
if err != nil {
span.RecordError(err)
http.Error(w, "ERR: "+err.Error(), http.StatusInternalServerError)
return
}
sort.Sort(lis)
switch httputil.NegotiateContentType(r, []string{
"text/plain",
"application/json",
}, "text/plain") {
case "text/plain":
_, err = fmt.Fprint(w, lis.StringList())
span.RecordError(err)
case "application/json":
err = json.NewEncoder(w).Encode(lis)
span.RecordError(err)
}
}

202
mercury/spec.go Normal file
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package mercury
import (
"log"
"path/filepath"
"strconv"
"strings"
)
// Search implements a parsed namespace search
// It parses the input and generates an AST to inform the driver how to select values.
// * => all spaces
// mercury.* => all prefixed with `mercury.`
// mercury.config => only space `mercury.config`
// mercury.source.*#readonly => all prefixed with `mercury.source.` AND has tag `readonly`
// test.*|mercury.* => all prefixed with `test.` AND `mercury.`
// test.* find bin=eq=bar => all prefixed with `test.` AND has an attribute bin that equals bar
// test.* fields foo,bin => all prefixed with `test.` only show fields foo and bin
// - count 20 => start a cursor with 20 results
// - count 20 after <cursor> => continue after cursor for 20 results
// cursor encodes start points for each of the matched sources
type Search struct {
NamespaceSearch
Find []ops
Fields []string
Count uint64
Offset uint64
Cursor string
}
type NamespaceSpec interface {
Value() string
String() string
Raw() string
Match(string) bool
}
// NamespaceSearch list of namespace specs
type NamespaceSearch []NamespaceSpec
// ParseNamespace returns a list of parsed values
func ParseSearch(text string) (search Search) {
ns, text, _ := strings.Cut(text, " ")
var lis NamespaceSearch
for _, part := range strings.Split(ns, "|") {
if strings.HasPrefix(part, "trace:") {
lis = append(lis, NamespaceTrace(part[6:]))
} else if strings.Contains(part, "*") {
lis = append(lis, NamespaceStar(part))
} else {
lis = append(lis, NamespaceNode(part))
}
}
search.NamespaceSearch = lis
field, text, next := strings.Cut(text, " ")
text = strings.TrimSpace(text)
for next {
switch strings.ToLower(field) {
case "find":
field, text, _ = strings.Cut(text, " ")
text = strings.TrimSpace(text)
search.Find = simpleParse(field)
case "fields":
field, text, _ = strings.Cut(text, " ")
text = strings.TrimSpace(text)
search.Fields = strings.Split(field, ",")
case "count":
field, text, _ = strings.Cut(text, " ")
text = strings.TrimSpace(text)
search.Count, _ = strconv.ParseUint(field, 10, 64)
case "offset":
field, text, _ = strings.Cut(text, " ")
text = strings.TrimSpace(text)
search.Offset, _ = strconv.ParseUint(field, 10, 64)
case "after":
field, text, _ = strings.Cut(text, " ")
text = strings.TrimSpace(text)
search.Cursor = field
}
field, text, next = strings.Cut(text, " ")
text = strings.TrimSpace(text)
}
return
}
// String output string value
func (n NamespaceSearch) String() string {
lis := make([]string, 0, len(n))
for _, v := range n {
lis = append(lis, v.String())
}
return strings.Join(lis, ";")
}
// Match returns true if any match.
func (n NamespaceSearch) Match(s string) bool {
for _, m := range n {
ok, err := filepath.Match(m.Raw(), s)
if err != nil {
return false
}
if ok {
return true
}
}
return false
}
// NamespaceNode implements a node search value
type NamespaceNode string
// String output string value
func (n NamespaceNode) String() string { return string(n) }
// Quote return quoted value.
// func (n NamespaceNode) Quote() string { return `'` + n.Value() + `'` }
// Value to return the value
func (n NamespaceNode) Value() string { return string(n) }
// Raw return raw value.
func (n NamespaceNode) Raw() string { return string(n) }
// Match returns true if any match.
func (n NamespaceNode) Match(s string) bool { return match(n, s) }
// NamespaceTrace implements a trace search value
type NamespaceTrace string
// String output string value
func (n NamespaceTrace) String() string { return "trace:" + string(n) }
// Quote return quoted value.
// func (n NamespaceTrace) Quote() string { return `'` + n.Value() + `'` }
// Value to return the value
func (n NamespaceTrace) Value() string { return strings.Replace(string(n), "*", "%", -1) }
// Raw return raw value.
func (n NamespaceTrace) Raw() string { return string(n) }
// Match returns true if any match.
func (n NamespaceTrace) Match(s string) bool { return match(n, s) }
// NamespaceStar implements a trace search value
type NamespaceStar string
// String output string value
func (n NamespaceStar) String() string { return string(n) }
// Quote return quoted value.
// func (n NamespaceStar) Quote() string { return `'` + n.Value() + `'` }
// Value to return the value
func (n NamespaceStar) Value() string { return strings.Replace(string(n), "*", "%", -1) }
// Raw return raw value.
func (n NamespaceStar) Raw() string { return string(n) }
// Match returns true if any match.
func (n NamespaceStar) Match(s string) bool { return match(n, s) }
func match(n NamespaceSpec, s string) bool {
ok, err := filepath.Match(n.Raw(), s)
if err != nil {
return false
}
return ok
}
type ops struct {
Left string
Op string
Right string
}
func simpleParse(in string) (out []ops) {
items := strings.Split(in, ",")
for _, i := range items {
log.Println(i)
eq := strings.Split(i, "=")
switch len(eq) {
case 2:
out = append(out, ops{eq[0], "eq", eq[1]})
case 3:
if eq[1] == "" {
eq[1] = "eq"
}
out = append(out, ops{eq[0], eq[1], eq[2]})
}
}
return
}

109
mercury/spec_test.go Normal file
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package mercury_test
import (
"fmt"
"testing"
"github.com/matryer/is"
"go.sour.is/pkg/mercury"
"go.sour.is/pkg/mercury/sql"
sq "github.com/Masterminds/squirrel"
)
var MAX_FILTER int = 40
func TestNamespaceParse(t *testing.T) {
var tests = []struct {
getWhere func(mercury.Search) sq.Sqlizer
in string
out string
args []any
}{
{
getWhere: getWhere,
in: "d42.bgp.kapha.*|trace:d42.bgp.kapha",
out: "(column LIKE ? OR ? LIKE column || '%')",
args: []any{"d42.bgp.kapha.%", "d42.bgp.kapha"},
},
{
getWhere: getWhere,
in: "d42.bgp.kapha.*|d42.bgp.kapha",
out: "(column LIKE ? OR column = ?)",
args: []any{"d42.bgp.kapha.%", "d42.bgp.kapha"},
},
{
getWhere: mkWhere(t, sql.GetWhereSQ),
in: "d42.bgp.kapha.* find active=eq=true",
out: `SELECT * FROM spaces JOIN ( SELECT DISTINCT id FROM mercury_values mv, json_each(mv."values") vs WHERE (json_valid("values") AND name = ? AND vs.value = ?) ) r000 USING (id) WHERE (space LIKE ?)`,
args: []any{"active", "true", "d42.bgp.kapha.%"},
},
{
getWhere: mkWhere(t, sql.GetWhereSQ),
in: "d42.bgp.kapha.* count 10 offset 5",
out: `SELECT * FROM spaces WHERE (space LIKE ?) LIMIT 10 OFFSET 5`,
args: []any{"d42.bgp.kapha.%"},
},
{
getWhere: mkWhere(t, sql.GetWhereSQ),
in: "d42.bgp.kapha.* fields a,b,c",
out: `SELECT * FROM spaces WHERE (space LIKE ?)`,
args: []any{"d42.bgp.kapha.%"},
},
{
getWhere: mkWhere(t, sql.GetWhereSQ),
in: "dn42.* find @type=in=[person,net]",
out: `SELECT `,
args: []any{"d42.bgp.kapha.%"},
},
}
//SELECT * FROM spaces JOIN ( SELECT DISTINCT id FROM mercury_values mv, json_valid("values") vs WHERE (json_valid("values") AND name = ? AND vs.value = ?) ) r000 USING (id) WHERE (space LIKE ?) !=
//SELECT * FROM spaces JOIN ( SELECT DISTINCT mv.id FROM mercury_values mv, json_each(mv."values") vs WHERE (json_valid("values") AND name = ? AND vs.value = ?) ) r000 USING (id) WHERE (space LIKE ?)
for i, tt := range tests {
t.Run(fmt.Sprintf("test %d", i), func(t *testing.T) {
is := is.New(t)
out := mercury.ParseSearch(tt.in)
sql, args, err := tt.getWhere(out).ToSql()
is.NoErr(err)
is.Equal(sql, tt.out)
is.Equal(args, tt.args)
})
}
}
func getWhere(search mercury.Search) sq.Sqlizer {
var where sq.Or
space := "column"
for _, m := range search.NamespaceSearch {
switch m.(type) {
case mercury.NamespaceNode:
where = append(where, sq.Eq{space: m.Value()})
case mercury.NamespaceStar:
where = append(where, sq.Like{space: m.Value()})
case mercury.NamespaceTrace:
e := sq.Expr(`? LIKE `+space+` || '%'`, m.Value())
where = append(where, e)
}
}
return where
}
func mkWhere(t *testing.T, where func(search mercury.Search) (func(sq.SelectBuilder) sq.SelectBuilder, error)) func(search mercury.Search) sq.Sqlizer {
t.Helper()
return func(search mercury.Search) sq.Sqlizer {
w, err := where(search)
if err != nil {
t.Log(err)
t.Fail()
}
return w(sq.Select("*").From("spaces"))
}
}

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mercury/sql/init-pg.sql Normal file
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CREATE SEQUENCE IF NOT EXISTS mercury_spaces_id_seq;
CREATE TABLE IF NOT EXISTS mercury_spaces
(
space character varying NOT NULL,
id integer NOT NULL DEFAULT nextval('mercury_spaces_id_seq'::regclass),
notes character varying[] NOT NULL DEFAULT '{}'::character varying[],
tags character varying[] NOT NULL DEFAULT '{}'::character varying[],
trailer character varying[] NOT NULL DEFAULT '{}'::character varying[],
CONSTRAINT mercury_namespace_pk PRIMARY KEY (id)
);
CREATE UNIQUE INDEX IF NOT EXISTS mercury_namespace_space_uindex
ON mercury_spaces USING btree
(space ASC NULLS LAST);
CREATE TABLE IF NOT EXISTS mercury_values
(
id integer NOT NULL,
seq integer NOT NULL,
name character varying NOT NULL,
"values" character varying[] NOT NULL DEFAULT '{}'::character varying[],
tags character varying[] NOT NULL DEFAULT '{}'::character varying[],
notes character varying[] NOT NULL DEFAULT '{}'::character varying[],
CONSTRAINT mercury_values_pk PRIMARY KEY (id, seq)
);
CREATE INDEX IF NOT EXISTS mercury_values_name_index
ON mercury_values USING btree
(name ASC NULLS LAST);
CREATE OR REPLACE VIEW mercury_registry_vw
AS
SELECT
s.id,
v.seq,
s.space,
v.name,
v."values",
v.notes,
v.tags,
s.trailer
FROM mercury_spaces s
JOIN mercury_values v ON s.id = v.id;
CREATE OR REPLACE VIEW mercury_groups_vw
AS
SELECT DISTINCT
unnest(vw."values") AS user_id,
vw.name AS group_id
FROM mercury_registry_vw vw
WHERE vw.space::text = 'mercury.groups'::text;
CREATE OR REPLACE VIEW mercury_group_rules_vw
AS
WITH
tt as (
SELECT DISTINCT
vw.name AS group_id,
unnest(vw."values") AS rules
FROM mercury_registry_vw vw
WHERE vw.space::text = 'mercury.policy'::text
)
SELECT tt.group_id,
split_part(tt.rules::text, ' '::text, 1) AS role,
split_part(tt.rules::text, ' '::text, 2) AS type,
split_part(tt.rules::text, ' '::text, 3) AS match
FROM tt;
CREATE OR REPLACE VIEW mercury_user_rules_vw
AS
WITH
tt as (
SELECT DISTINCT
vw.name AS group_id,
unnest(vw."values") AS rules
FROM mercury_registry_vw vw
WHERE vw.space::text = 'mercury.policy'::text
)
SELECT
g.user_id,
split_part(tt.rules::text, ' '::text, 1) AS role,
split_part(tt.rules::text, ' '::text, 2) AS type,
split_part(tt.rules::text, ' '::text, 3) AS match
FROM mercury_groups_vw g
JOIN tt ON g.group_id::text = tt.group_id::text;
CREATE OR REPLACE VIEW mercury_rules_vw
AS
SELECT
'U-'::text || vw.user_id::text AS id,
vw.role,
vw.type,
vw.match
FROM mercury_user_rules_vw vw
UNION
SELECT
'G-'::text || vw.group_id::text AS id,
vw.role,
vw.type,
vw.match
FROM mercury_group_rules_vw vw;
CREATE OR REPLACE VIEW mercury_notify_vw
AS
WITH
tt as (
SELECT DISTINCT
vw.name,
unnest(vw."values") AS rules
FROM mercury_registry_vw vw
WHERE vw.space::text = 'mercury.notify'::text
)
SELECT
tt.name,
split_part(tt.rules::text, ' '::text, 1) AS match,
split_part(tt.rules::text, ' '::text, 2) AS event,
split_part(tt.rules::text, ' '::text, 3) AS method,
split_part(tt.rules::text, ' '::text, 4) AS url
FROM tt;

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mercury/sql/init-sql3.sql Normal file
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CREATE TABLE IF NOT EXISTS mercury_spaces
(
space character varying NOT NULL unique,
id integer NOT NULL CONSTRAINT mercury_namespace_pk PRIMARY KEY autoincrement,
notes json NOT NULL DEFAULT '[]',
tags json NOT NULL DEFAULT '[]',
trailer json NOT NULL DEFAULT '[]'
);
CREATE TABLE IF NOT EXISTS mercury_values
(
id integer NOT NULL,
seq integer NOT NULL,
name character varying NOT NULL,
"values" json NOT NULL DEFAULT '[]',
tags json NOT NULL DEFAULT '[]',
notes json NOT NULL DEFAULT '[]',
CONSTRAINT mercury_values_pk PRIMARY KEY (id, seq)
);
drop view if exists mercury_registry_vw;
CREATE VIEW if not exists mercury_registry_vw
AS
SELECT
s.id,
v.seq,
s.space,
v.name,
v."values",
v.notes,
v.tags,
s.trailer
FROM mercury_spaces s
JOIN mercury_values v ON s.id = v.id;
drop view if exists mercury_groups_vw;
CREATE VIEW if not exists mercury_groups_vw
AS
SELECT DISTINCT
j.value AS user_id,
vw.name AS group_id
FROM mercury_registry_vw vw, json_each(vw."values") j
WHERE vw.space = 'mercury.groups';
drop view if exists mercury_group_rules_vw;
CREATE VIEW if not exists mercury_group_rules_vw
AS
WITH
tt as (
SELECT DISTINCT
vw.name AS group_id,
j.value AS rules
FROM mercury_registry_vw vw, json_each(vw."values") j
WHERE vw.space = 'mercury.policy'
)
SELECT tt.group_id,
tt.rules rule,
'' AS role,
'' AS type,
''AS match
FROM tt;
drop view if exists mercury_user_rules_vw;
CREATE VIEW if not exists mercury_user_rules_vw
AS
WITH
tt as (
SELECT DISTINCT
vw.name AS group_id,
j.value AS rules
FROM mercury_registry_vw vw, json_each(vw."values") j
WHERE vw.space = 'mercury.policy'
)
SELECT
g.user_id,
tt.rules rule,
'' AS role,
'' AS type,
'' AS match
FROM mercury_groups_vw g
JOIN tt ON g.group_id = tt.group_id;
drop view if exists mercury_rules_vw;
CREATE VIEW if not exists mercury_rules_vw
AS
SELECT
'U-' || vw.user_id AS id,
vw.rule,
vw.role,
vw.type,
vw.match
FROM mercury_user_rules_vw vw
UNION
SELECT
'G-' || vw.group_id AS id,
vw.rule,
vw.role,
vw.type,
vw.match
FROM mercury_group_rules_vw vw;
drop view if exists mercury_notify_vw;
CREATE VIEW if not exists mercury_notify_vw
AS
WITH
tt as (
SELECT DISTINCT
vw.name,
j.value AS rules
FROM mercury_registry_vw vw, json_each(vw."values") j
WHERE vw.space = 'mercury.notify'
)
SELECT
tt.name,
tt.rules rule,
substr(tt.rules, 1, instr(tt.rules, ' ')-1) AS match,
substr(tt.rules, instr(tt.rules, ' ')+1, instr(substr(tt.rules, instr(tt.rules, ' ')+1), ' ')-1) AS event,
'' AS method,
'' as url
FROM tt;

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mercury/sql/list-string.go Normal file
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package sql
import (
"database/sql/driver"
"fmt"
"strings"
"unicode"
"unicode/utf8"
)
type valueFn func() (v driver.Value, err error)
func (fn valueFn) Value() (v driver.Value, err error) {
return fn()
}
type scanFn func(value any) error
func (fn scanFn) Scan(v any) error {
return fn(v)
}
func listScan(e *[]string, ends [2]rune) scanFn {
return func(value any) error {
var str string
switch v := value.(type) {
case string:
str = v
case []byte:
str = string(v)
case []rune:
str = string(v)
default:
return fmt.Errorf("array must be uint64, got: %T", value)
}
if e == nil {
*e = []string{}
}
str = trim(str, ends[0], ends[1])
if len(str) == 0 {
return nil
}
*e = append(*e, splitComma(string(str))...)
return nil
}
}
func listValue(e []string, ends [2]rune) valueFn {
return func() (value driver.Value, err error) {
var b strings.Builder
if len(e) == 0 {
return string(ends[:]), nil
}
_, err = b.WriteRune(ends[0])
if err != nil {
return
}
var arr []string
for _, s := range e {
arr = append(arr, `"`+s+`"`)
}
_, err = b.WriteString(strings.Join(arr, ","))
if err != nil {
return
}
_, err = b.WriteRune(ends[1])
if err != nil {
return
}
return b.String(), nil
}
}
func splitComma(s string) []string {
lastQuote := rune(0)
f := func(c rune) bool {
switch {
case c == lastQuote:
lastQuote = rune(0)
return false
case lastQuote != rune(0):
return false
case unicode.In(c, unicode.Quotation_Mark):
lastQuote = c
return false
default:
return c == ','
}
}
lis := strings.FieldsFunc(s, f)
var out []string
for _, s := range lis {
s = trim(s, '"', '"')
out = append(out, s)
}
return out
}
func trim(s string, start, end rune) string {
r0, size0 := utf8.DecodeRuneInString(s)
if size0 == 0 {
return s
}
if r0 != start {
return s
}
r1, size1 := utf8.DecodeLastRuneInString(s)
if size1 == 0 {
return s
}
if r1 != end {
return s
}
return s[size0 : len(s)-size1]
}

55
mercury/sql/notify.go Normal file
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@ -0,0 +1,55 @@
package sql
import (
"context"
"strings"
"github.com/Masterminds/squirrel"
"go.sour.is/pkg/lg"
"go.sour.is/pkg/mercury"
)
// Notify stores the attributes for a registry space
type Notify struct {
Name string `json:"name" view:"mercury_notify_vw"`
Match string `json:"match"`
Event string `json:"event"`
Method string `json:"-" db:"method"`
URL string `json:"-" db:"url"`
}
// GetNotify get list of rules
func (pgm *sqlHandler) GetNotify(ctx context.Context, event string) (lis mercury.ListNotify, err error) {
ctx, span := lg.Span(ctx)
defer span.End()
rows, err := squirrel.Select(`"name"`, `"match"`, `"event"`, `"method"`, `"url"`, `"rule"`).
From("mercury_notify_vw").
Where(squirrel.Eq{"event": event}).
PlaceholderFormat(squirrel.Dollar).
RunWith(pgm.db).
QueryContext(ctx)
if err != nil {
return nil, err
}
defer rows.Close()
for rows.Next() {
var s mercury.Notify
var rule string
err = rows.Scan(&s.Name, &s.Match, &s.Event, &s.Method, &s.URL, &rule)
if err != nil {
return nil, err
}
if rule != "" {
s.Match, rule, _ = strings.Cut(rule, " ")
s.Event, rule, _ = strings.Cut(rule, " ")
s.Method, s.URL, _ = strings.Cut(rule, " ")
}
lis = append(lis, s)
}
return lis, rows.Err()
}

44
mercury/sql/otel.go Normal file
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@ -0,0 +1,44 @@
package sql
import (
"database/sql"
"strings"
"go.nhat.io/otelsql"
semconv "go.opentelemetry.io/otel/semconv/v1.20.0"
)
func openDB(driver, dsn string) (*sql.DB, error) {
system := semconv.DBSystemPostgreSQL
if driver == "sqlite" || strings.HasPrefix(driver, "libsql") {
system = semconv.DBSystemSqlite
}
if driver == "postgres" {
var err error
// Register the otelsql wrapper for the provided postgres driver.
driver, err = otelsql.Register(driver,
otelsql.AllowRoot(),
otelsql.TraceQueryWithoutArgs(),
otelsql.TraceRowsClose(),
otelsql.TraceRowsAffected(),
// otelsql.WithDatabaseName("my_database"), // Optional.
otelsql.WithSystem(system), // Optional.
)
if err != nil {
return nil, err
}
}
// Connect to a Postgres database using the postgres driver wrapper.
db, err := sql.Open(driver, dsn)
if err != nil {
return nil, err
}
if err := otelsql.RecordStats(db); err != nil {
return nil, err
}
return db, nil
}

99
mercury/sql/rules.go Normal file
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@ -0,0 +1,99 @@
package sql
import (
"context"
"fmt"
"strings"
"github.com/Masterminds/squirrel"
"go.sour.is/pkg/lg"
"go.sour.is/pkg/mercury"
"go.sour.is/pkg/ident"
)
type grouper interface {
GetGroups() []string
}
// GetRules get list of rules
func (p *sqlHandler) GetRules(ctx context.Context, user ident.Ident) (lis mercury.Rules, err error) {
ctx, span := lg.Span(ctx)
defer span.End()
var ids []string
ids = append(ids, "U-"+user.Identity())
switch u := user.(type) {
case grouper:
for _, g := range u.GetGroups() {
ids = append(ids, "G-"+g)
}
}
if groups, err := p.getGroups(ctx, user.Identity()); err != nil {
for _, g := range groups {
ids = append(ids, "G-"+g)
}
}
query := squirrel.Select(`"role"`, `"type"`, `"match"`, `"rule"`).
From("mercury_rules_vw").
Where(squirrel.Eq{"id": ids}).
PlaceholderFormat(squirrel.Dollar)
rows, err := query.
RunWith(p.db).
QueryContext(ctx)
if err != nil {
span.RecordError(err)
return nil, err
}
defer rows.Close()
for rows.Next() {
var s mercury.Rule
var rule string
err = rows.Scan(&s.Role, &s.Type, &s.Match, &rule)
if err != nil {
span.RecordError(err)
return nil, err
}
if rule != "" {
s.Role, rule, _ = strings.Cut(rule, " ")
s.Type, s.Match, _ = strings.Cut(rule, " ")
}
lis = append(lis, s)
}
err = rows.Err()
span.RecordError(err)
span.AddEvent(fmt.Sprint("read rules ", len(lis)))
return lis, err
}
// getGroups get list of groups
func (pgm *sqlHandler) getGroups(ctx context.Context, user string) (lis []string, err error) {
ctx, span := lg.Span(ctx)
defer span.End()
rows, err := squirrel.Select("group_id").
From("mercury_groups_vw").
Where(squirrel.Eq{"user_id": user}).
PlaceholderFormat(squirrel.Dollar).
RunWith(pgm.db).
QueryContext(ctx)
if err != nil {
return nil, err
}
defer rows.Close()
for rows.Next() {
var s string
err = rows.Scan(&s)
if err != nil {
return nil, err
}
lis = append(lis, s)
}
return lis, rows.Err()
}

594
mercury/sql/sql.go Normal file
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@ -0,0 +1,594 @@
package sql
import (
"context"
"database/sql"
"errors"
"fmt"
"log"
"slices"
"strings"
sq "github.com/Masterminds/squirrel"
"go.sour.is/pkg/lg"
"go.sour.is/pkg/mercury"
"golang.org/x/exp/maps"
)
var MAX_FILTER int = 40
type sqlHandler struct {
name string
db *sql.DB
paceholderFormat sq.PlaceholderFormat
listFormat [2]rune
readonly bool
getWhere func(search mercury.Search) (func(sq.SelectBuilder) sq.SelectBuilder, error)
}
var (
_ mercury.GetIndex = (*sqlHandler)(nil)
_ mercury.GetConfig = (*sqlHandler)(nil)
_ mercury.GetRules = (*sqlHandler)(nil)
_ mercury.WriteConfig = (*sqlHandler)(nil)
)
func Register() func(context.Context) error {
var hdlrs []*sqlHandler
mercury.Registry.Register("sql", func(s *mercury.Space) any {
var dsn string
var opts strings.Builder
var dbtype string
var readonly bool = slices.Contains(s.Tags, "readonly")
for _, c := range s.List {
if c.Name == "match" {
continue
}
if c.Name == "dbtype" {
dbtype = c.First()
continue
}
if c.Name == "dsn" {
dsn = c.First()
break
}
fmt.Fprintln(&opts, c.Name, "=", c.First())
}
if dsn == "" {
dsn = opts.String()
}
db, err := openDB(dbtype, dsn)
if err != nil {
return err
}
if err = db.Ping(); err != nil {
return err
}
switch dbtype {
case "sqlite", "libsql", "libsql+embed":
h := &sqlHandler{s.Space, db, sq.Question, [2]rune{'[', ']'}, readonly, GetWhereSQ}
hdlrs = append(hdlrs, h)
return h
case "postgres":
h := &sqlHandler{s.Space, db, sq.Dollar, [2]rune{'{', '}'}, readonly, GetWherePG}
hdlrs = append(hdlrs, h)
return h
default:
return fmt.Errorf("unsupported dbtype: %s", dbtype)
}
})
return func(ctx context.Context) error {
var errs error
for _, h := range hdlrs {
// if err = ctx.Err(); err != nil {
// return errors.Join(errs, err)
// }
errs = errors.Join(errs, h.db.Close())
}
return errs
}
}
type Space struct {
mercury.Space
id uint64
}
type Value struct {
mercury.Value
id uint64
}
func (p *sqlHandler) GetIndex(ctx context.Context, search mercury.Search) (mercury.Config, error) {
ctx, span := lg.Span(ctx)
defer span.End()
where, err := p.getWhere(search)
if err != nil {
return nil, err
}
lis, err := p.listSpace(ctx, nil, where)
if err != nil {
log.Println(err)
return nil, err
}
config := make(mercury.Config, len(lis))
for i, s := range lis {
config[i] = &s.Space
}
return config, nil
}
func (p *sqlHandler) GetConfig(ctx context.Context, search mercury.Search) (config mercury.Config, err error) {
ctx, span := lg.Span(ctx)
defer span.End()
where, err := p.getWhere(search)
if err != nil {
return nil, err
}
lis, err := p.listSpace(ctx, nil, where)
if err != nil {
log.Println(err)
return nil, err
}
if len(lis) == 0 {
return nil, nil
}
spaceIDX := make([]uint64, len(lis))
spaceMap := make(map[uint64]int, len(lis))
config = make(mercury.Config, len(lis))
for i, s := range lis {
spaceIDX[i] = s.id
config[i] = &s.Space
spaceMap[s.id] = i
}
query := sq.Select(`"id"`, `"name"`, `"seq"`, `"notes"`, `"tags"`, `"values"`).
From("mercury_values").
Where(sq.Eq{"id": spaceIDX}).
OrderBy("id asc", "seq asc").
PlaceholderFormat(p.paceholderFormat)
span.AddEvent(p.name)
span.AddEvent(lg.LogQuery(query.ToSql()))
rows, err := query.RunWith(p.db).
QueryContext(ctx)
if err != nil {
log.Println(err)
return nil, err
}
defer rows.Close()
for rows.Next() {
var s Value
err = rows.Scan(
&s.id,
&s.Name,
&s.Seq,
listScan(&s.Notes, p.listFormat),
listScan(&s.Tags, p.listFormat),
listScan(&s.Values, p.listFormat),
)
if err != nil {
return nil, err
}
if u, ok := spaceMap[s.id]; ok {
lis[u].List = append(lis[u].List, s.Value)
}
}
err = rows.Err()
span.RecordError(err)
span.AddEvent(fmt.Sprint("read index ", len(lis)))
// log.Println(config.String())
return config, err
}
func (p *sqlHandler) listSpace(ctx context.Context, tx sq.BaseRunner, where func(sq.SelectBuilder) sq.SelectBuilder) ([]*Space, error) {
ctx, span := lg.Span(ctx)
defer span.End()
if tx == nil {
tx = p.db
}
query := sq.Select(`"id"`, `"space"`, `"notes"`, `"tags"`, `"trailer"`).
From("mercury_spaces").
OrderBy("space asc").
PlaceholderFormat(p.paceholderFormat)
query = where(query)
span.AddEvent(p.name)
span.AddEvent(lg.LogQuery(query.ToSql()))
rows, err := query.RunWith(tx).
QueryContext(ctx)
if err != nil {
log.Println(err)
return nil, err
}
defer rows.Close()
var lis []*Space
for rows.Next() {
var s Space
err = rows.Scan(
&s.id,
&s.Space.Space,
listScan(&s.Space.Notes, p.listFormat),
listScan(&s.Space.Tags, p.listFormat),
listScan(&s.Trailer, p.listFormat),
)
if err != nil {
return nil, err
}
lis = append(lis, &s)
}
err = rows.Err()
span.RecordError(err)
span.AddEvent(fmt.Sprint("read config ", len(lis)))
return lis, err
}
// WriteConfig writes a config map to database
func (p *sqlHandler) WriteConfig(ctx context.Context, config mercury.Config) (err error) {
ctx, span := lg.Span(ctx)
defer span.End()
if p.readonly {
return fmt.Errorf("readonly database")
}
// Delete spaces that are present in input but are empty.
deleteSpaces := make(map[string]struct{})
// get names of each space
var names = make(map[string]int)
for i, v := range config {
names[v.Space] = i
if len(v.Tags) == 0 && len(v.Notes) == 0 && len(v.List) == 0 {
deleteSpaces[v.Space] = struct{}{}
}
}
tx, err := p.db.Begin()
if err != nil {
return err
}
defer func() {
if err != nil && tx != nil {
tx.Rollback()
}
}()
// get current spaces
where := func(qry sq.SelectBuilder) sq.SelectBuilder { return qry.Where(sq.Eq{"space": maps.Keys(names)}) }
lis, err := p.listSpace(ctx, tx, where)
if err != nil {
return
}
// determine which are being updated
var deleteIDs []uint64
var updateIDs []uint64
var currentNames = make(map[string]struct{}, len(lis))
var updateSpaces []*mercury.Space
var insertSpaces []*mercury.Space
for _, s := range lis {
spaceName := s.Space.Space
currentNames[spaceName] = struct{}{}
if _, ok := deleteSpaces[spaceName]; ok {
deleteIDs = append(deleteIDs, s.id)
continue
}
updateSpaces = append(updateSpaces, config[names[spaceName]])
updateIDs = append(updateIDs, s.id)
}
for _, s := range config {
spaceName := s.Space
if _, ok := currentNames[spaceName]; !ok {
insertSpaces = append(insertSpaces, s)
}
}
// delete spaces
if ids := deleteIDs; len(ids) > 0 {
_, err = sq.Delete("mercury_spaces").Where(sq.Eq{"id": ids}).RunWith(tx).PlaceholderFormat(p.paceholderFormat).ExecContext(ctx)
if err != nil {
return err
}
}
// delete values
if ids := append(updateIDs, deleteIDs...); len(ids) > 0 {
_, err = sq.Delete("mercury_values").Where(sq.Eq{"id": ids}).RunWith(tx).PlaceholderFormat(p.paceholderFormat).ExecContext(ctx)
if err != nil {
return err
}
}
var newValues []*Value
// update spaces
for i, u := range updateSpaces {
query := sq.Update("mercury_spaces").
Where(sq.Eq{"id": updateIDs[i]}).
Set("tags", listValue(u.Tags, p.listFormat)).
Set("notes", listValue(u.Notes, p.listFormat)).
Set("trailer", listValue(u.Trailer, p.listFormat)).
PlaceholderFormat(p.paceholderFormat)
span.AddEvent(p.name)
span.AddEvent(lg.LogQuery(query.ToSql()))
_, err := query.RunWith(tx).ExecContext(ctx)
if err != nil {
return err
}
// log.Debugf("UPDATED %d SPACES", len(updateSpaces))
for _, v := range u.List {
newValues = append(newValues, &Value{Value: v, id: updateIDs[i]})
}
}
// insert spaces
for _, s := range insertSpaces {
var id uint64
query := sq.Insert("mercury_spaces").
PlaceholderFormat(p.paceholderFormat).
Columns("space", "tags", "notes", "trailer").
Values(
s.Space,
listValue(s.Tags, p.listFormat),
listValue(s.Notes, p.listFormat),
listValue(s.Trailer, p.listFormat),
).
Suffix("RETURNING \"id\"")
span.AddEvent(p.name)
span.AddEvent(lg.LogQuery(query.ToSql()))
err := query.
RunWith(tx).
QueryRowContext(ctx).
Scan(&id)
if err != nil {
span.AddEvent(p.name)
s, v, _ := query.ToSql()
log.Println(s, v, err)
return err
}
for _, v := range s.List {
newValues = append(newValues, &Value{Value: v, id: id})
}
}
// write all values to db.
err = p.writeValues(ctx, tx, newValues)
// log.Debugf("WROTE %d ATTRS", len(attrs))
tx.Commit()
tx = nil
return
}
// writeValues writes the values to db
func (p *sqlHandler) writeValues(ctx context.Context, tx sq.BaseRunner, lis []*Value) (err error) {
ctx, span := lg.Span(ctx)
defer span.End()
if len(lis) == 0 {
return nil
}
newInsert := func() sq.InsertBuilder {
return sq.Insert("mercury_values").
RunWith(tx).
PlaceholderFormat(p.paceholderFormat).
Columns(
`"id"`,
`"seq"`,
`"name"`,
`"values"`,
`"notes"`,
`"tags"`,
)
}
chunk := int(65000 / 3)
insert := newInsert()
for i, s := range lis {
insert = insert.Values(
s.id,
s.Seq,
s.Name,
listValue(s.Values, p.listFormat),
listValue(s.Notes, p.listFormat),
listValue(s.Tags, p.listFormat),
)
// log.Debug(s.Name)
if i > 0 && i%chunk == 0 {
// log.Debugf("inserting %v rows into %v", i%chunk, d.Table)
span.AddEvent(p.name)
span.AddEvent(lg.LogQuery(insert.ToSql()))
_, err = insert.ExecContext(ctx)
if err != nil {
// log.Error(err)
return
}
insert = newInsert()
}
}
if len(lis)%chunk > 0 {
// log.Debugf("inserting %v rows into %v", len(lis)%chunk, d.Table)
span.AddEvent(p.name)
span.AddEvent(lg.LogQuery(insert.ToSql()))
_, err = insert.ExecContext(ctx)
if err != nil {
// log.Error(err)
return
}
}
return
}
func GetWherePG(search mercury.Search) (func(sq.SelectBuilder) sq.SelectBuilder, error) {
var where sq.Or
space := "space"
for _, m := range search.NamespaceSearch {
switch m.(type) {
case mercury.NamespaceNode:
where = append(where, sq.Eq{space: m.Value()})
case mercury.NamespaceStar:
where = append(where, sq.Like{space: m.Value()})
case mercury.NamespaceTrace:
e := sq.Expr(`? LIKE `+space+` || '%'`, m.Value())
where = append(where, e)
}
}
var joins []sq.SelectBuilder
for i, o := range search.Find {
log.Println(o)
if i > MAX_FILTER {
err := fmt.Errorf("too many filters [%d]", MAX_FILTER)
return nil, err
}
q := sq.Select("DISTINCT id").From("mercury_values")
switch o.Op {
case "key":
q = q.Where(sq.Eq{"name": o.Left})
case "nkey":
q = q.Where(sq.NotEq{"name": o.Left})
case "eq":
q = q.Where("name = ? AND ? = any (values)", o.Left, o.Right)
case "neq":
q = q.Where("name = ? AND ? != any (values)", o.Left, o.Right)
case "gt":
q = q.Where("name = ? AND ? > any (values)", o.Left, o.Right)
case "lt":
q = q.Where("name = ? AND ? < any (values)", o.Left, o.Right)
case "ge":
q = q.Where("name = ? AND ? >= any (values)", o.Left, o.Right)
case "le":
q = q.Where("name = ? AND ? <= any (values)", o.Left, o.Right)
// case "like":
// q = q.Where("name = ? AND value LIKE ?", o.Left, o.Right)
// case "in":
// q = q.Where(sq.Eq{"name": o.Left, "value": strings.Split(o.Right, " ")})
}
joins = append(joins, q)
}
return func(s sq.SelectBuilder) sq.SelectBuilder {
for i, q := range joins {
s = s.JoinClause(q.Prefix("JOIN (").Suffix(fmt.Sprintf(`) r%03d USING (id)`, i)))
}
if search.Count > 0 {
s = s.Limit(search.Count)
}
return s.Where(where)
}, nil
}
func GetWhereSQ(search mercury.Search) (func(sq.SelectBuilder) sq.SelectBuilder, error) {
var where sq.Or
var errs error
id := "id"
space := "space"
name := "name"
values_each := `json_valid("values")`
values_valid := `json_valid("values")`
if errs != nil {
return nil, errs
}
for _, m := range search.NamespaceSearch {
switch m.(type) {
case mercury.NamespaceNode:
where = append(where, sq.Eq{space: m.Value()})
case mercury.NamespaceStar:
where = append(where, sq.Like{space: m.Value()})
case mercury.NamespaceTrace:
e := sq.Expr(`? LIKE `+space+` || '%'`, m.Value())
where = append(where, e)
}
}
var joins []sq.SelectBuilder
for i, o := range search.Find {
log.Println(o)
if i > MAX_FILTER {
err := fmt.Errorf("too many filters [%d]", MAX_FILTER)
return nil, err
}
q := sq.Select("DISTINCT " + id).From(`mercury_values mv, ` + values_each + ` vs`)
switch o.Op {
case "key":
q = q.Where(sq.Eq{name: o.Left})
case "nkey":
q = q.Where(sq.NotEq{name: o.Left})
case "eq":
q = q.Where(sq.And{sq.Expr(values_valid), sq.Eq{name: o.Left, `vs.value`: o.Right}})
case "neq":
q = q.Where(sq.And{sq.Expr(values_valid), sq.Eq{name: o.Left}, sq.NotEq{`vs.value`: o.Right}})
case "gt":
q = q.Where(sq.And{sq.Expr(values_valid), sq.Eq{name: o.Left}, sq.Gt{`vs.value`: o.Right}})
case "lt":
q = q.Where(sq.And{sq.Expr(values_valid), sq.Eq{name: o.Left}, sq.Lt{`vs.value`: o.Right}})
case "ge":
q = q.Where(sq.And{sq.Expr(values_valid), sq.Eq{name: o.Left}, sq.GtOrEq{`vs.value`: o.Right}})
case "le":
q = q.Where(sq.And{sq.Expr(values_valid), sq.Eq{name: o.Left}, sq.LtOrEq{`vs.value`: o.Right}})
case "like":
q = q.Where(sq.And{sq.Expr(values_valid), sq.Eq{name: o.Left}, sq.Like{`vs.value`: o.Right}})
case "in":
q = q.Where(sq.Eq{name: o.Left, "vs.value": strings.Split(o.Right, " ")})
}
joins = append(joins, q)
}
return func(s sq.SelectBuilder) sq.SelectBuilder {
for i, q := range joins {
s = s.JoinClause(q.Prefix("JOIN (").Suffix(fmt.Sprintf(`) r%03d USING (id)`, i)))
}
if search.Count > 0 {
s = s.Limit(search.Count)
}
if search.Offset > 0 {
s = s.Offset(search.Offset)
}
return s.Where(where)
}, nil
}

View File

@ -8,6 +8,7 @@ type mux struct {
*http.ServeMux
api *http.ServeMux
wellknown *http.ServeMux
handler http.Handler
}
func (mux *mux) Add(fns ...interface{ RegisterHTTP(*http.ServeMux) }) {
@ -24,16 +25,30 @@ func (mux *mux) Add(fns ...interface{ RegisterHTTP(*http.ServeMux) }) {
// log.Printf("WellKnown: %T", fn)
fn.RegisterWellKnown(mux.wellknown)
}
if fn, ok := fn.(interface{ RegisterMiddleware(http.Handler) http.Handler }); ok {
hdlr := mux.handler
// log.Printf("WellKnown: %T", fn)
mux.handler = fn.RegisterMiddleware(hdlr)
}
}
}
func (mux *mux) ServeHTTP(w http.ResponseWriter, r *http.Request) {
mux.handler.ServeHTTP(w, r)
}
func New() *mux {
mux := &mux{
api: http.NewServeMux(),
wellknown: http.NewServeMux(),
ServeMux: http.NewServeMux(),
}
mux.Handle("/v1/", http.StripPrefix("/v1", mux.api))
mux.Handle("/api/v1/", http.StripPrefix("/api/v1", mux.api))
mux.Handle("/.well-known/", http.StripPrefix("/.well-known", mux.wellknown))
mux.handler = mux.ServeMux
return mux
}

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package rsql
import (
"bytes"
"strings"
)
// Node is the smallest unit of ast
type Node interface {
TokenLiteral() string
String() string
}
// Statement is a executable tree
type Statement interface {
Node
statementNode()
}
// Expression is a portion of tree
type Expression interface {
Node
expressionNode()
}
// Identifier is a variable name
type Identifier struct {
Token Token
Value string
}
func (i *Identifier) expressionNode() {}
// TokenLiteral returns the literal value of a token
func (i *Identifier) TokenLiteral() string { return i.Token.Literal }
// String returns a string representation of value
func (i *Identifier) String() string { return i.Value }
// Integer is a numeric value
type Integer struct {
Token Token
Value int64
}
func (i *Integer) expressionNode() {}
// TokenLiteral returns the literal value of a token
func (i *Integer) TokenLiteral() string { return i.Token.Literal }
// String returns a string representation of value
func (i *Integer) String() string { return i.Token.Literal }
// Float is a floating point value
type Float struct {
Token Token
Value float64
}
func (i *Float) expressionNode() {}
// TokenLiteral returns the literal value of a token
func (i *Float) TokenLiteral() string { return i.Token.Literal }
// String returns a string representation of value
func (i *Float) String() string { return i.Token.Literal }
// Bool is a boolean value
type Bool struct {
Token Token
Value bool
}
func (i *Bool) expressionNode() {}
// TokenLiteral returns the literal value of a token
func (i *Bool) TokenLiteral() string { return i.Token.Literal }
// String returns a string representation of value
func (i *Bool) String() string { return i.Token.Literal }
// Null is an empty value
type Null struct {
Token Token
}
func (i *Null) expressionNode() {}
// TokenLiteral returns the literal value of a token
func (i *Null) TokenLiteral() string { return i.Token.Literal }
// String returns a string representation of value
func (i *Null) String() string { return i.Token.Literal }
// String is an array of codepoints
type String struct {
Token Token
Value string
}
func (i *String) expressionNode() {}
// TokenLiteral returns the literal value of a token
func (i *String) TokenLiteral() string { return i.Token.Literal }
// String returns a string representation of value
func (i *String) String() string {
var out bytes.Buffer
out.WriteRune('"')
out.WriteString(i.Value)
out.WriteRune('"')
return out.String()
}
// Array is an array of tokens
type Array struct {
Token Token
Elements []Expression
}
func (a *Array) expressionNode() {}
// TokenLiteral returns the literal value of a token
func (a *Array) TokenLiteral() string { return a.Token.Literal }
// String returns a string representation of value
func (a *Array) String() string {
var out bytes.Buffer
var elements []string
for _, el := range a.Elements {
elements = append(elements, el.String())
}
out.WriteRune('(')
out.WriteString(strings.Join(elements, ","))
out.WriteRune(')')
return out.String()
}
// Program is a collection of statements
type Program struct {
Statements []Statement
Args map[string]string
}
func (p *Program) expressionNode() {}
// TokenLiteral returns the literal value of a token
func (p *Program) TokenLiteral() string {
if len(p.Statements) > 0 {
return p.Statements[0].TokenLiteral()
}
return ""
}
// String returns a string representation of value
func (p *Program) String() string {
var out bytes.Buffer
for _, s := range p.Statements {
out.WriteString(s.String())
}
if len(p.Args) > 0 {
out.WriteRune('|')
for a, b := range p.Args {
out.WriteRune(' ')
out.WriteString(a)
out.WriteRune(':')
out.WriteString(b)
}
}
return out.String()
}
// ExpressionStatement is a collection of expressions
type ExpressionStatement struct {
Token Token
Expression Expression
}
func (ExpressionStatement) statementNode() {}
// TokenLiteral returns the literal value of a token
func (e ExpressionStatement) TokenLiteral() string { return e.Token.Literal }
// String returns a string representation of value
func (e ExpressionStatement) String() string {
if e.Expression != nil {
return e.Expression.String()
}
return ""
}
// PrefixExpression is an expression with a preceeding operator
type PrefixExpression struct {
Token Token
Operator string
Right Expression
}
func (p *PrefixExpression) expressionNode() {}
// TokenLiteral returns the literal value of a token
func (p *PrefixExpression) TokenLiteral() string { return p.Token.Literal }
// String returns a string representation of value
func (p *PrefixExpression) String() string {
var out bytes.Buffer
out.WriteRune('(')
out.WriteString(p.Operator)
out.WriteString(p.Right.String())
out.WriteRune(')')
return out.String()
}
// InfixExpression is two expressions with a infix operator
type InfixExpression struct {
Token Token
Left Expression
Operator string
Right Expression
}
func (i *InfixExpression) expressionNode() {}
// TokenLiteral returns the literal value of a token
func (i *InfixExpression) TokenLiteral() string { return i.Token.Literal }
// String returns a string representation of value
func (i *InfixExpression) String() string {
var out bytes.Buffer
out.WriteRune('(')
if i.Left != nil {
out.WriteString(i.Left.String())
} else {
out.WriteString("nil")
}
out.WriteString(i.Operator)
if i.Right != nil {
out.WriteString(i.Right.String())
} else {
out.WriteString("nil")
}
out.WriteRune(')')
return out.String()
}

21
rsql/ast_test.go Normal file
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package rsql
import "testing"
func TestString(t *testing.T) {
program := &Program{
Statements: []Statement {
ExpressionStatement{
Token: Token{TokEQ, "=="},
Expression: &InfixExpression{
Token: Token{TokEQ, "=="},
Left: &Identifier{Token{TokIdent,"foo"}, "foo"},
Operator: "==",
Right: &Integer{Token{TokInteger, "5"}, 5},
},
},
},
}
t.Log(program.String())
}

98
rsql/dbcolumns.go Normal file
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package rsql
import (
"fmt"
"reflect"
"strings"
"unicode"
)
// DbColumns database model metadata
type DbColumns struct {
Cols []string
index map[string]int
Table string
View string
}
// Col returns the mapped column names
func (d *DbColumns) Col(column string) (s string, err error) {
idx, ok := d.Index(column)
if !ok {
err = fmt.Errorf("column not found on table: %v", column)
return
}
return d.Cols[idx], err
}
// Index returns the column number
func (d *DbColumns) Index(column string) (idx int, ok bool) {
idx, ok = d.index[column]
return
}
// GetDbColumns builds a metadata struct
func GetDbColumns(o interface{}) *DbColumns {
d := DbColumns{}
t := reflect.TypeOf(o)
d.index = make(map[string]int)
for i := 0; i < t.NumField(); i++ {
field := t.Field(i)
tag, _, _ := strings.Cut(field.Tag.Get("db"), ",")
json := field.Tag.Get("json")
json, _, _ = strings.Cut(json, ",")
if tag == "" {
tag = json
}
graphql := field.Tag.Get("graphql")
graphql, _, _ = strings.Cut(graphql, ",")
if tag == "" {
tag = graphql
}
if tag == "-" {
continue
}
if tag == "" {
tag = field.Name
}
d.index[field.Name] = len(d.Cols)
if _, ok := d.index[tag]; !ok && tag != "" {
d.index[tag] = len(d.Cols)
}
if _, ok := d.index[json]; !ok && json != "" {
d.index[json] = len(d.Cols)
}
if _, ok := d.index[graphql]; !ok && graphql != "" {
d.index[graphql] = len(d.Cols)
} else if !ok && graphql == "" {
a := []rune(field.Name)
for i := 0; i < len(a); i++ {
if unicode.IsLower(a[i]) {
break
}
a[i] = unicode.ToLower(a[i])
}
graphql = string(a)
d.index[graphql] = len(d.Cols)
}
d.Cols = append(d.Cols, tag)
}
return &d
}
func QuoteCols(cols []string) []string {
lis := make([]string, len(cols))
for i := range cols {
lis[i] = `"` + cols[i] + `"`
}
return lis
}

258
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package rsql
import (
"unicode"
"unicode/utf8"
)
type Lexer struct {
input string
position int
readPosition int
rune rune
}
// NewLexer returns a new lexing generator
func NewLexer(in string) *Lexer {
l := &Lexer{input: in}
l.readRune()
return l
}
// NextToken returns the next token from lexer
func (l *Lexer) NextToken() Token {
var tok Token
l.skipSpace()
switch l.rune {
case '-':
l.readRune()
if isNumber(l.rune) {
var isFloat bool
tok.Literal, isFloat = l.readNumber()
if isFloat {
tok.Type = TokFloat
} else {
tok.Type = TokInteger
}
} else if isLetter(l.rune) {
tok.Literal = l.readIdentifier()
tok.Type = lookupIdent(tok.Literal)
} else {
tok = newToken(TokIllegal, l.rune)
return tok
}
tok.Literal = "-" + tok.Literal
return tok
case '=':
r := l.peekRune()
if r == '=' {
r := l.rune
l.readRune()
tok.Type, tok.Literal = TokEQ, string(r)+string(l.rune)
} else if isLetter(r) {
tok = l.readFIQL()
return tok
} else {
tok = newToken(TokIllegal, l.rune)
}
case ';':
tok = newToken(TokAND, l.rune)
case ',':
tok = newToken(TokOR, l.rune)
case ')':
tok = newToken(TokRParen, l.rune)
case '(':
tok = newToken(TokLParen, l.rune)
case ']':
tok = newToken(TokRBracket, l.rune)
case '[':
tok = newToken(TokLBracket, l.rune)
case '~':
tok = newToken(TokLIKE, l.rune)
case '!':
if l.peekRune() == '=' {
r := l.rune
l.readRune()
tok.Type, tok.Literal = TokNEQ, string(r)+string(l.rune)
} else if l.peekRune() == '~' {
r := l.rune
l.readRune()
tok.Type, tok.Literal = TokNLIKE, string(r)+string(l.rune)
} else {
tok = newToken(TokIllegal, l.rune)
return tok
}
case '<':
if l.peekRune() == '=' {
r := l.rune
l.readRune()
tok.Type, tok.Literal = TokLE, string(r)+string(l.rune)
} else {
tok = newToken(TokLT, l.rune)
}
case '>':
if l.peekRune() == '=' {
r := l.rune
l.readRune()
tok.Type, tok.Literal = TokGE, string(r)+string(l.rune)
} else {
tok = newToken(TokGT, l.rune)
}
case '"', '\'':
tok.Type = TokString
tok.Literal = l.readString(l.rune)
case 0:
tok.Type, tok.Literal = TokEOF, ""
default:
if isNumber(l.rune) {
var isFloat bool
tok.Literal, isFloat = l.readNumber()
if isFloat {
tok.Type = TokFloat
} else {
tok.Type = TokInteger
}
} else if isLetter(l.rune) {
tok.Literal = l.readIdentifier()
tok.Type = lookupIdent(tok.Literal)
} else {
tok = newToken(TokIllegal, l.rune)
return tok
}
return tok
}
l.readRune()
return tok
}
func (l *Lexer) readRune() {
var size int
if l.readPosition >= len(l.input) {
l.rune = 0
} else {
l.rune, size = utf8.DecodeRuneInString(l.input[l.readPosition:])
}
l.position = l.readPosition
l.readPosition += size
}
func (l *Lexer) peekRune() rune {
if l.readPosition >= len(l.input) {
return 0
}
r, _ := utf8.DecodeRuneInString(l.input[l.readPosition:])
return r
}
func (l *Lexer) skipSpace() {
for unicode.IsSpace(l.rune) {
l.readRune()
}
}
func (l *Lexer) readIdentifier() string {
position := l.position
if isLetter(l.rune) {
l.readRune()
}
for isLetter(l.rune) || isNumber(l.rune) {
l.readRune()
}
return l.input[position:l.position]
}
func (l *Lexer) readNumber() (string, bool) {
isFloat := false
position := l.position
for isNumber(l.rune) {
if l.rune == '.' {
isFloat = true
}
l.readRune()
}
return l.input[position:l.position], isFloat
}
func (l *Lexer) readString(st rune) string {
position := l.position + 1
escape := false
for {
l.readRune()
if l.rune == '\\' {
escape = true
continue
}
if escape {
escape = false
continue
}
if l.rune == st || l.rune == 0 {
break
}
}
return l.input[position:l.position]
}
func (l *Lexer) readFIQL() Token {
l.readRune()
s := l.readIdentifier()
if l.rune != '=' {
return Token{TokIllegal, "=" + s}
}
l.readRune()
switch s {
case "eq":
return Token{TokEQ, "=" + s + "="}
case "neq":
return Token{TokNEQ, "=" + s + "="}
case "gt":
return Token{TokGT, "=" + s + "="}
case "ge":
return Token{TokGE, "=" + s + "="}
case "lt":
return Token{TokLT, "=" + s + "="}
case "le":
return Token{TokLE, "=" + s + "="}
default:
return Token{TokExtend, "=" + s + "="}
}
}
func isLetter(r rune) bool {
if unicode.IsSpace(r) {
return false
}
switch r {
case '"', '\'', '(', ')', ';', ',', '=', '!', '~', '<', '>', '[', ']':
return false
}
if '0' < r && r < '9' || r == '.' {
return false
}
return unicode.IsPrint(r)
}
func isNumber(r rune) bool {
if '0' <= r && r <= '9' || r == '.' {
return true
}
return false
}

105
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package rsql
import (
"testing"
"github.com/matryer/is"
)
func TestReservedToken(t *testing.T) {
input := `( ) ; , == != ~ < > <= >= [ ]`
tests := []struct {
expectedType TokenType
expectedLiteral string
}{
{TokLParen, "("},
{TokRParen, ")"},
{TokAND, ";"},
{TokOR, ","},
{TokEQ, "=="},
{TokNEQ, "!="},
{TokLIKE, "~"},
{TokLT, "<"},
{TokGT, ">"},
{TokLE, "<="},
{TokGE, ">="},
{TokLBracket, "["},
{TokRBracket, "]"},
}
t.Run("Reserved Tokens", func(t *testing.T) {
is := is.New(t)
l := NewLexer(input)
for _, tt := range tests {
tok := l.NextToken()
is.Equal(tt.expectedType, tok.Type)
is.Equal(tt.expectedLiteral, tok.Literal)
}
})
}
func TestNextToken(t *testing.T) {
input := `director=='name\'s';actor=eq="name's";Year=le=2000,Year>=2010;(one <= -1.0, two != true),three=in=(1,2,3);c4==5`
tests := []struct {
expectedType TokenType
expectedLiteral string
}{
{TokIdent, `director`},
{TokEQ, `==`},
{TokString, `name\'s`},
{TokAND, `;`},
{TokIdent, `actor`},
{TokEQ, `=eq=`},
{TokString, `name's`},
{TokAND, `;`},
{TokIdent, "Year"},
{TokLE, "=le="},
{TokInteger, "2000"},
{TokOR, ","},
{TokIdent, "Year"},
{TokGE, ">="},
{TokInteger, "2010"},
{TokAND, ";"},
{TokLParen, "("},
{TokIdent, "one"},
{TokLE, "<="},
{TokFloat, "-1.0"},
{TokOR, ","},
{TokIdent, "two"},
{TokNEQ, "!="},
{TokTRUE, "true"},
{TokRParen, ")"},
{TokOR, ","},
{TokIdent, "three"},
{TokExtend, "=in="},
{TokLParen, "("},
{TokInteger, "1"},
{TokOR, ","},
{TokInteger, "2"},
{TokOR, ","},
{TokInteger, "3"},
{TokRParen, ")"},
{TokAND, ";"},
{TokIdent, "c4"},
{TokEQ, "=="},
{TokInteger, "5"},
}
t.Run("Next Token Parsing", func(t *testing.T) {
is := is.New(t)
l := NewLexer(input)
c := 0
for _, tt := range tests {
c++
tok := l.NextToken()
is.Equal(tt.expectedType, tok.Type)
is.Equal(tt.expectedLiteral, tok.Literal)
}
is.Equal(c, len(tests))
})
}

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package rsql
import (
"fmt"
"strconv"
"strings"
)
// Precidence enumerations
const (
_ = iota
PrecedenceLowest
PrecedenceAND
PrecedenceOR
PrecedenceCompare
PrecedenceHighest
)
var precidences = map[TokenType]int{
TokEQ: PrecedenceCompare,
TokNEQ: PrecedenceCompare,
TokLT: PrecedenceCompare,
TokLE: PrecedenceCompare,
TokGT: PrecedenceCompare,
TokGE: PrecedenceCompare,
TokLIKE: PrecedenceCompare,
TokOR: PrecedenceOR,
TokAND: PrecedenceAND,
}
type (
prefixParseFn func() Expression
infixParseFn func(expression Expression) Expression
)
// Parser reads lexed values and builds an AST
type Parser struct {
l *Lexer
errors []string
curToken Token
peekToken Token
prefixParseFns map[TokenType]prefixParseFn
infixParseFns map[TokenType]infixParseFn
}
// NewParser returns a parser for a given lexer
func NewParser(l *Lexer) *Parser {
p := &Parser{l: l}
p.prefixParseFns = make(map[TokenType]prefixParseFn)
p.registerPrefix(TokIdent, p.parseIdentifier)
p.registerPrefix(TokInteger, p.parseInteger)
p.registerPrefix(TokFloat, p.parseFloat)
p.registerPrefix(TokTRUE, p.parseBool)
p.registerPrefix(TokFALSE, p.parseBool)
p.registerPrefix(TokNULL, p.parseNull)
p.registerPrefix(TokString, p.parseString)
p.registerPrefix(TokLParen, p.parseGroupedExpression)
p.registerPrefix(TokLBracket, p.parseArray)
p.infixParseFns = make(map[TokenType]infixParseFn)
p.registerInfix(TokEQ, p.parseInfixExpression)
p.registerInfix(TokNEQ, p.parseInfixExpression)
p.registerInfix(TokLT, p.parseInfixExpression)
p.registerInfix(TokLE, p.parseInfixExpression)
p.registerInfix(TokGT, p.parseInfixExpression)
p.registerInfix(TokGE, p.parseInfixExpression)
p.registerInfix(TokLIKE, p.parseInfixExpression)
p.registerInfix(TokAND, p.parseInfixExpression)
p.registerInfix(TokOR, p.parseInfixExpression)
p.nextToken()
p.nextToken()
return p
}
// DefaultParse sets up a default lex/parse and returns the program
func DefaultParse(in string) *Program {
args := make(map[string]string)
in, argstr, ok := strings.Cut(in, "|")
if ok {
for _, fd := range strings.Fields(argstr) {
a, b, _ := strings.Cut(fd, ":")
args[a] = b
}
}
l := NewLexer(in)
p := NewParser(l)
return p.ParseProgram(args)
}
func (p *Parser) registerPrefix(tokenType TokenType, fn prefixParseFn) {
p.prefixParseFns[tokenType] = fn
}
func (p *Parser) registerInfix(tokenType TokenType, fn infixParseFn) {
p.infixParseFns[tokenType] = fn
}
// Errors returns a list of errors while parsing
func (p *Parser) Errors() []string {
return p.errors
}
func (p *Parser) peekError(t TokenType) {
msg := fmt.Sprintf("expected next token to be %s, got %s instad",
t, p.peekToken.Type)
p.errors = append(p.errors, msg)
}
func (p *Parser) nextToken() {
p.curToken = p.peekToken
p.peekToken = p.l.NextToken()
}
func (p *Parser) curTokenIs(t TokenType) bool {
return p.curToken.Type == t
}
func (p *Parser) peekTokenIs(t TokenType) bool {
return p.peekToken.Type == t
}
func (p *Parser) expectPeek(t TokenType) bool {
if p.peekTokenIs(t) {
p.nextToken()
return true
}
p.peekError(t)
return false
}
func (p *Parser) peekPrecedence() int {
if p, ok := precidences[p.peekToken.Type]; ok {
return p
}
return PrecedenceLowest
}
func (p *Parser) curPrecedence() int {
if p, ok := precidences[p.curToken.Type]; ok {
return p
}
return PrecedenceLowest
}
// ParseProgram builds a program AST from lexer
func (p *Parser) ParseProgram(args map[string]string) *Program {
program := &Program{Args: args}
program.Statements = []Statement{}
for p.curToken.Type != TokEOF {
stmt := p.parseStatement()
if stmt != nil {
program.Statements = append(program.Statements, stmt)
}
p.nextToken()
}
return program
}
func (p *Parser) parseStatement() Statement {
switch p.curToken.Type {
default:
return p.parseExpressionStatement()
}
}
func (p *Parser) parseExpressionStatement() *ExpressionStatement {
stmt := &ExpressionStatement{Token: p.curToken}
stmt.Expression = p.parseExpression(PrecedenceLowest)
return stmt
}
func (p *Parser) parseExpression(precedence int) Expression {
prefix := p.prefixParseFns[p.curToken.Type]
if prefix == nil {
msg := fmt.Sprintf("no prefix parse function for %s found", p.curToken.Type)
p.errors = append(p.errors, msg)
return nil
}
leftExp := prefix()
for !p.peekTokenIs(TokEOF) && precedence < p.peekPrecedence() {
infix := p.infixParseFns[p.peekToken.Type]
if infix == nil {
return leftExp
}
p.nextToken()
leftExp = infix(leftExp)
}
return leftExp
}
func (p *Parser) parseIdentifier() Expression {
return &Identifier{Token: p.curToken, Value: p.curToken.Literal}
}
func (p *Parser) parseInteger() Expression {
lit := &Integer{Token: p.curToken}
value, err := strconv.ParseInt(p.curToken.Literal, 0, 64)
if err != nil {
msg := fmt.Sprintf("could not parse %q as integer", p.curToken.Literal)
p.errors = append(p.errors, msg)
return nil
}
lit.Value = value
return lit
}
func (p *Parser) parseFloat() Expression {
lit := &Float{Token: p.curToken}
value, err := strconv.ParseFloat(p.curToken.Literal, 64)
if err != nil {
msg := fmt.Sprintf("could not parse %q as float", p.curToken.Literal)
p.errors = append(p.errors, msg)
return nil
}
lit.Value = value
return lit
}
func (p *Parser) parseBool() Expression {
return &Bool{Token: p.curToken, Value: p.curTokenIs(TokTRUE)}
}
func (p *Parser) parseString() Expression {
s := p.curToken.Literal
s = strings.Replace(s, `\'`, `'`, -1)
s = strings.Replace(s, `\"`, `"`, -1)
return &String{Token: p.curToken, Value: s}
}
func (p *Parser) parseNull() Expression {
return &Null{Token: p.curToken}
}
func (p *Parser) parseArray() Expression {
array := &Array{Token: p.curToken}
array.Elements = p.parseExpressionList(TokRBracket)
return array
}
func (p *Parser) parseExpressionList(end TokenType) []Expression {
var list []Expression
if p.peekTokenIs(end) {
p.nextToken()
return list
}
p.nextToken()
list = append(list, p.parseExpression(PrecedenceHighest))
for p.peekTokenIs(TokOR) {
p.nextToken()
p.nextToken()
list = append(list, p.parseExpression(PrecedenceHighest))
}
if !p.expectPeek(end) {
return nil
}
return list
}
func (p *Parser) parseInfixExpression(left Expression) Expression {
expression := &InfixExpression{
Token: p.curToken,
Left: left,
Operator: p.curToken.Literal,
}
precidence := p.curPrecedence()
p.nextToken()
expression.Right = p.parseExpression(precidence)
return expression
}
func (p *Parser) parseGroupedExpression() Expression {
p.nextToken()
exp := p.parseExpression(PrecedenceLowest)
if !p.expectPeek(TokRParen) {
return nil
}
return exp
}

309
rsql/parser_test.go Normal file
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@ -0,0 +1,309 @@
package rsql
import (
"fmt"
"strings"
"testing"
"github.com/matryer/is"
)
func typeOf(t any) string { return fmt.Sprintf("%T", t) }
func TestIdentifierExpression(t *testing.T) {
input := `foobar`
t.Run("Identifier Expressions", func(t *testing.T) {
is := is.New(t)
l := NewLexer(input)
p := NewParser(l)
program := p.ParseProgram(nil)
checkParserErrors(t, p)
is.Equal(len(program.Statements), 1)
// if len(program.Statements) != 1 {
// t.Fatalf("program has not envough statements. got=%d", len(program.Statements))
// }
})
}
func TestIntegerExpression(t *testing.T) {
input := `5`
t.Run("IntegerExpression", func(t *testing.T) {
is := is.New(t)
l := NewLexer(input)
p := NewParser(l)
program := p.ParseProgram(nil)
checkParserErrors(t, p)
is.Equal(len(program.Statements), 1)
// if len(program.Statements) != 1 {
// t.Fatalf("program has not enough statements. got=%d", len(program.Statements))
// }
stmt, ok := program.Statements[0].(*ExpressionStatement)
is.Equal(typeOf(program.Statements[0]), typeOf(&ExpressionStatement{}))
is.True(ok)
// if !ok {
// t.Fatalf("program.Statements[0] is not ExpressionStatement got=%T",
// program.Statements[0])
// }
literal, ok := stmt.Expression.(*Integer)
is.Equal(typeOf(literal), typeOf(&Integer{}))
is.True(ok)
// if !ok {
// t.Fatalf("stmt.Expression is not Integer got=%T",
// stmt.Expression)
// }
is.Equal(literal.Value, int64(5))
// if literal.Value != 5 {
// t.Errorf("literal.Value not %d. got=%d", 5, literal.Value)
// }
is.Equal(literal.TokenLiteral(), "5")
// if literal.TokenLiteral() != "5" {
// t.Errorf("literal.TokenLiteral not %v. got=%v", "5", literal.TokenLiteral())
// }
})
}
func TestInfixExpression(t *testing.T) {
tests := []struct {
input string
left string
operator string
right int64
}{
{"foo == 1", "foo", "==", 1},
{"bar > 2", "bar", ">", 2},
{"bin < 3", "bin", "<", 3},
{"baz != 4", "baz", "!=", 4},
{"buf >= 5", "buf", ">=", 5},
{"goz <= 6", "goz", "<=", 6},
}
t.Run("Infix Expressions", func(t *testing.T) {
is := is.New(t)
for _, tt := range tests {
l := NewLexer(tt.input)
p := NewParser(l)
program := p.ParseProgram(nil)
checkParserErrors(t, p)
is.Equal(len(program.Statements), 1)
// if len(program.Statements) != 1 {
// t.Fatalf("program has not envough statements. got=%d", len(program.Statements))
// }
stmt, ok := program.Statements[0].(*ExpressionStatement)
is.Equal(typeOf(stmt), typeOf(&ExpressionStatement{}))
is.True(ok)
// if !ok {
// t.Fatalf("program.Statements[0] is not ExpressionStatement got=%T",
// program.Statements[0])
// }
exp, ok := stmt.Expression.(*InfixExpression)
is.Equal(typeOf(exp), typeOf(&InfixExpression{}))
is.True(ok)
// if !ok {
// t.Fatalf("stmt.Expression is not InfixExpression got=%T",
// stmt.Expression)
// }
if !testIdentifier(t, exp.Left, tt.left) {
return
}
is.Equal(exp.Operator, tt.operator)
// if exp.Operator != tt.operator {
// t.Fatalf("exp.Operator is not '%v'. got '%v'", tt.operator, exp.Operator)
// }
if testInteger(t, exp.Right, tt.right) {
return
}
}
})
}
func TestOperatorPrecedenceParsing(t *testing.T) {
tests := []struct {
input string
expect string
}{
{
"foo == 1; bar == 2.0",
"((foo==1);(bar==2.0))",
},
{
`director=='name\'s';actor=eq="name\'s";Year=le=2000,Year>=2010;one <= -1.0, two != true`,
`((((director=="name's");(actor=eq="name's"));((Year=le=2000),(Year>=2010)));((one<=-1.0),(two!=true)))`,
},
}
t.Run("Operator Precidence Parsing", func(t *testing.T) {
is := is.New(t)
for _, tt := range tests {
l := NewLexer(tt.input)
p := NewParser(l)
program := p.ParseProgram(nil)
checkParserErrors(t, p)
actual := program.String()
is.Equal(actual, tt.expect)
// if actual != tt.expect {
// t.Errorf("expcected=%q, got=%q", tt.expect, actual)
// }
}
})
}
func TestParsingArray(t *testing.T) {
input := "[1, 2.1, true, null]"
l := NewLexer(input)
p := NewParser(l)
program := p.ParseProgram(nil)
checkParserErrors(t, p)
if len(program.Statements) != 1 {
t.Fatalf("program has not enough statements. got=%d", len(program.Statements))
}
stmt, ok := program.Statements[0].(*ExpressionStatement)
if !ok {
t.Fatalf("program.Statements[0] is not ExpressionStatement got=%T",
program.Statements[0])
}
array, ok := stmt.Expression.(*Array)
if !ok {
t.Fatalf("stmt.Expression is not Array got=%T",
stmt.Expression)
}
if len(array.Elements) != 4 {
t.Fatalf("len(array.Elements) not 4. got=%v", len(array.Elements))
}
testInteger(t, array.Elements[0], 1)
testFloat(t, array.Elements[1], 2.1)
testBool(t, array.Elements[2], true)
testNull(t, array.Elements[3])
}
func checkParserErrors(t *testing.T, p *Parser) {
errors := p.Errors()
if len(errors) == 0 {
return
}
t.Errorf("parser has %d errors", len(errors))
for _, msg := range errors {
t.Errorf("parser error: %q", msg)
}
t.FailNow()
}
func testInteger(t *testing.T, e Expression, value int64) bool {
literal, ok := e.(*Integer)
if !ok {
t.Errorf("stmt.Expression is not Integer got=%T", e)
return false
}
if literal.Value != value {
t.Errorf("literal.Value not %d. got=%d", value, literal.Value)
return false
}
if literal.TokenLiteral() != fmt.Sprintf("%v", value) {
t.Errorf("literal.TokenLiteral not %v. got=%v", value, literal.TokenLiteral())
return false
}
return true
}
func testFloat(t *testing.T, e Expression, value float64) bool {
literal, ok := e.(*Float)
if !ok {
t.Errorf("stmt.Expression is not Float got=%T", e)
return false
}
if literal.Value != value {
t.Errorf("literal.Value not %f. got=%f", value, literal.Value)
return false
}
if literal.TokenLiteral() != fmt.Sprintf("%v", value) {
t.Errorf("literal.TokenLiteral not %q. got=%q", fmt.Sprintf("%v", value), literal.TokenLiteral())
return false
}
return true
}
func testBool(t *testing.T, e Expression, value bool) bool {
literal, ok := e.(*Bool)
if !ok {
t.Errorf("stmt.Expression is not Float got=%T", e)
return false
}
if literal.Value != value {
t.Errorf("literal.Value not %t. got=%t", value, literal.Value)
return false
}
if literal.TokenLiteral() != fmt.Sprintf("%v", value) {
t.Errorf("literal.TokenLiteral not %v. got=%v", value, literal.TokenLiteral())
return false
}
return true
}
func testNull(t *testing.T, e Expression) bool {
literal, ok := e.(*Null)
if !ok {
t.Errorf("stmt.Expression is not Null got=%T", e)
return false
}
if literal.Token.Type != TokNULL {
t.Errorf("liternal.Token is not TokNULL got=%T", e)
return false
}
return true
}
func testIdentifier(t *testing.T, e Expression, value string) bool {
literal, ok := e.(*Identifier)
if !ok {
t.Errorf("stmt.Expression is not Integer got=%T", e)
return false
}
if literal.Value != value {
t.Errorf("literal.Value not %s. got=%s", value, literal.Value)
return false
}
if literal.TokenLiteral() != value {
t.Errorf("literal.TokenLiteral not %v. got=%v", value, literal.TokenLiteral())
return false
}
return true
}
func TestReplace(t *testing.T) {
is := is.New(t)
is.Equal(strings.Replace(`name\'s`, `\'`, `'`, -1), `name's`)
}

300
rsql/squirrel/sqlizer.go Normal file
View File

@ -0,0 +1,300 @@
package squirrel
import (
"fmt"
"strconv"
"strings"
"github.com/Masterminds/squirrel"
"go.sour.is/pkg/rsql"
)
type dbInfo interface {
Col(string) (string, error)
}
type args map[string]string
func (d *decoder) mkArgs(a args) args {
m := make(args, len(a))
for k, v := range a {
if k == "limit" || k == "offset" {
m[k] = v
continue
}
var err error
if k, err = d.dbInfo.Col(k); err == nil {
m[k] = v
}
}
return m
}
func (a args) Limit() (uint64, bool) {
if a == nil {
return 0, false
}
if v, ok := a["limit"]; ok {
i, err := strconv.ParseUint(v, 10, 64)
return i, err == nil
}
return 0, false
}
func (a args) Offset() (uint64, bool) {
if a == nil {
return 0, false
}
if v, ok := a["offset"]; ok {
i, err := strconv.ParseUint(v, 10, 64)
return i, err == nil
}
return 0, false
}
func (a args) Order() []string {
var lis []string
for k, v := range a {
if k == "limit" || k == "offset" {
continue
}
lis = append(lis, k+" "+v)
}
return lis
}
func Query(in string, db dbInfo) (squirrel.Sqlizer, args, error) {
d := decoder{dbInfo: db}
program := rsql.DefaultParse(in)
sql, err := d.decode(program)
return sql, d.mkArgs(program.Args), err
}
type decoder struct {
dbInfo dbInfo
}
func (db *decoder) decode(in *rsql.Program) (squirrel.Sqlizer, error) {
switch len(in.Statements) {
case 0:
return nil, nil
case 1:
return db.decodeStatement(in.Statements[0])
default:
a := squirrel.And{}
for _, stmt := range in.Statements {
d, err := db.decodeStatement(stmt)
if d == nil {
return nil, err
}
a = append(a, d)
}
return a, nil
}
}
func (db *decoder) decodeStatement(in rsql.Statement) (squirrel.Sqlizer, error) {
switch s := in.(type) {
case *rsql.ExpressionStatement:
return db.decodeExpression(s.Expression)
}
return nil, nil
}
func (db *decoder) decodeExpression(in rsql.Expression) (squirrel.Sqlizer, error) {
switch e := in.(type) {
case *rsql.InfixExpression:
return db.decodeInfix(e)
}
return nil, nil
}
func (db *decoder) decodeInfix(in *rsql.InfixExpression) (squirrel.Sqlizer, error) {
switch in.Token.Type {
case rsql.TokAND:
a := squirrel.And{}
left, err := db.decodeExpression(in.Left)
if err != nil {
return nil, err
}
switch v := left.(type) {
case squirrel.And:
for _, el := range v {
if el != nil {
a = append(a, el)
}
}
default:
if v != nil {
a = append(a, v)
}
}
right, err := db.decodeExpression(in.Right)
if err != nil {
return nil, err
}
switch v := right.(type) {
case squirrel.And:
for _, el := range v {
if el != nil {
a = append(a, el)
}
}
default:
if v != nil {
a = append(a, v)
}
}
return a, nil
case rsql.TokOR:
left, err := db.decodeExpression(in.Left)
if err != nil {
return nil, err
}
right, err := db.decodeExpression(in.Right)
if err != nil {
return nil, err
}
return squirrel.Or{left, right}, nil
case rsql.TokEQ:
col, err := db.dbInfo.Col(in.Left.String())
if err != nil {
return nil, err
}
v, err := db.decodeValue(in.Right)
if err != nil {
return nil, err
}
return squirrel.Eq{col: v}, nil
case rsql.TokLIKE:
col, err := db.dbInfo.Col(in.Left.String())
if err != nil {
return nil, err
}
v, err := db.decodeValue(in.Right)
if err != nil {
return nil, err
}
switch value := v.(type) {
case string:
return Like{col, strings.Replace(value, "*", "%", -1)}, nil
default:
return nil, fmt.Errorf("LIKE requires a string value")
}
case rsql.TokNEQ:
col, err := db.dbInfo.Col(in.Left.String())
if err != nil {
return nil, err
}
v, err := db.decodeValue(in.Right)
if err != nil {
return nil, err
}
return squirrel.NotEq{col: v}, nil
case rsql.TokGT:
col, err := db.dbInfo.Col(in.Left.String())
if err != nil {
return nil, err
}
v, err := db.decodeValue(in.Right)
if err != nil {
return nil, err
}
return squirrel.Gt{col: v}, nil
case rsql.TokGE:
col, err := db.dbInfo.Col(in.Left.String())
if err != nil {
return nil, err
}
v, err := db.decodeValue(in.Right)
if err != nil {
return nil, err
}
return squirrel.GtOrEq{col: v}, nil
case rsql.TokLT:
col, err := db.dbInfo.Col(in.Left.String())
if err != nil {
return nil, err
}
v, err := db.decodeValue(in.Right)
if err != nil {
return nil, err
}
return squirrel.Lt{col: v}, nil
case rsql.TokLE:
col, err := db.dbInfo.Col(in.Left.String())
if err != nil {
return nil, err
}
v, err := db.decodeValue(in.Right)
if err != nil {
return nil, err
}
return squirrel.LtOrEq{col: v}, nil
default:
return nil, nil
}
}
func (db *decoder) decodeValue(in rsql.Expression) (interface{}, error) {
switch v := in.(type) {
case *rsql.Array:
var values []interface{}
for _, el := range v.Elements {
v, err := db.decodeValue(el)
if err != nil {
return nil, err
}
values = append(values, v)
}
return values, nil
case *rsql.InfixExpression:
return db.decodeInfix(v)
case *rsql.Identifier:
return v.Value, nil
case *rsql.Integer:
return v.Value, nil
case *rsql.Float:
return v.Value, nil
case *rsql.String:
return v.Value, nil
case *rsql.Bool:
return v.Value, nil
case *rsql.Null:
return nil, nil
}
return nil, nil
}
type Like struct {
column string
value string
}
func (l Like) ToSql() (sql string, args []interface{}, err error) {
sql = fmt.Sprintf("%s LIKE(?)", l.column)
args = append(args, l.value)
return
}

View File

@ -0,0 +1,141 @@
package squirrel
import (
"fmt"
"testing"
"github.com/Masterminds/squirrel"
"github.com/matryer/is"
"go.sour.is/pkg/rsql"
)
type testTable struct {
Foo string `json:"foo"`
Bar string `json:"bar"`
Baz string `json:"baz"`
Director string `json:"director"`
Actor string `json:"actor"`
Year string `json:"year"`
Genres string `json:"genres"`
One string `json:"one"`
Two string `json:"two"`
Family string `json:"family_name"`
}
func TestQuery(t *testing.T) {
d := rsql.GetDbColumns(testTable{})
is := is.New(t)
tests := []struct {
input string
expect squirrel.Sqlizer
expectLimit *uint64
expectOffset *uint64
expectOrder []string
fail bool
}{
{input: "foo==[1, 2, 3]", expect: squirrel.Eq{"foo": []interface{}{1, 2, 3}}},
{input: "foo==1,(bar==2;baz==3)", expect: squirrel.Or{squirrel.Eq{"foo": 1}, squirrel.And{squirrel.Eq{"bar": 2}, squirrel.Eq{"baz": 3}}}},
{input: "foo==1", expect: squirrel.Eq{"foo": 1}},
{input: "foo!=1.1", expect: squirrel.NotEq{"foo": 1.1}},
{input: "foo==true", expect: squirrel.Eq{"foo": true}},
{input: "foo==null", expect: squirrel.Eq{"foo": nil}},
{input: "foo>2", expect: squirrel.Gt{"foo": 2}},
{input: "foo>=2.1", expect: squirrel.GtOrEq{"foo": 2.1}},
{input: "foo<3", expect: squirrel.Lt{"foo": 3}},
{input: "foo<=3.1", expect: squirrel.LtOrEq{"foo": 3.1}},
{input: "foo=eq=1", expect: squirrel.Eq{"foo": 1}},
{input: "foo=neq=1.1", expect: squirrel.NotEq{"foo": 1.1}},
{input: "foo=gt=2", expect: squirrel.Gt{"foo": 2}},
{input: "foo=ge=2.1", expect: squirrel.GtOrEq{"foo": 2.1}},
{input: "foo=lt=3", expect: squirrel.Lt{"foo": 3}},
{input: "foo=le=3.1", expect: squirrel.LtOrEq{"foo": 3.1}},
{input: "foo==1;bar==2", expect: squirrel.And{squirrel.Eq{"foo": 1}, squirrel.Eq{"bar": 2}}},
{input: "foo==1,bar==2", expect: squirrel.Or{squirrel.Eq{"foo": 1}, squirrel.Eq{"bar": 2}}},
{input: "foo==1,bar==2;baz=3", expect: nil},
{
input: `director=='name\'s';actor=eq="name\'s";Year=le=2000,Year>=2010;one <= -1.0, two != true`,
expect: squirrel.And{
squirrel.Eq{"director": "name's"},
squirrel.Eq{"actor": "name's"},
squirrel.Or{
squirrel.LtOrEq{"year": 2000},
squirrel.GtOrEq{"year": 2010},
},
squirrel.Or{
squirrel.LtOrEq{"one": -1.0},
squirrel.NotEq{"two": true},
},
},
},
{
input: `genres==[sci-fi,action] ; genres==[romance,animated,horror] , director~Que*Tarantino`,
expect: squirrel.And{
squirrel.Eq{"genres": []interface{}{"sci-fi", "action"}},
squirrel.Or{
squirrel.Eq{"genres": []interface{}{"romance", "animated", "horror"}},
Like{"director", "Que%Tarantino"},
},
},
},
{input: "", expect: nil},
{input: "family_name==LUNDY", expect: squirrel.Eq{"family_name": "LUNDY"}},
{input: "family_name==[1,2,null]", expect: squirrel.Eq{"family_name": []interface{}{1, 2, nil}}},
{input: "family_name=LUNDY", expect: nil},
{input: "family_name==LUNDY and family_name==SMITH", expect: squirrel.And{squirrel.Eq{"family_name": "LUNDY"}, squirrel.Eq{"family_name": "SMITH"}}},
{input: "family_name==LUNDY or family_name==SMITH", expect: squirrel.Or{squirrel.Eq{"family_name": "LUNDY"}, squirrel.Eq{"family_name": "SMITH"}}},
{input: "foo==1,family_name=LUNDY;baz==2", expect: nil},
{input: "foo ~ bar*", expect: Like{"foo", "bar%"}},
{input: "foo ~ [bar*,bin*]", expect: nil, fail: true},
{input: "foo==1|limit:10", expect: squirrel.Eq{"foo": 1}, expectLimit: ptr(uint64(10))},
{input: "foo==1|offset:2", expect: squirrel.Eq{"foo": 1}, expectOffset: ptr(uint64(2))},
{
input: "foo>=1|limit:10 offset:2 foo:desc",
expect: squirrel.GtOrEq{"foo": 1},
expectLimit: ptr(uint64(10)),
expectOffset: ptr(uint64(2)),
expectOrder: []string{"foo desc"},
},
}
for i, tt := range tests {
q, a, err := Query(tt.input, d)
if !tt.fail && err != nil {
t.Error(err)
}
if q != nil {
t.Log(q.ToSql())
}
actual := fmt.Sprintf("%#v", q)
expect := fmt.Sprintf("%#v", tt.expect)
if expect != actual {
t.Errorf("test[%d]: %v\n\tinput and expected are not the same. wanted=%s got=%s", i, tt.input, expect, actual)
}
if limit, ok := a.Limit(); tt.expectLimit != nil {
is.True(ok)
is.Equal(limit, *tt.expectLimit)
} else {
is.True(!ok)
}
if offset, ok := a.Offset(); tt.expectOffset != nil {
is.True(ok)
is.Equal(offset, *tt.expectOffset)
} else {
is.True(!ok)
}
if order := a.Order(); tt.expectOrder != nil {
is.Equal(order, tt.expectOrder)
} else {
is.Equal(len(order), 0)
}
}
}
func ptr[T any](t T) *T { return &t }

62
rsql/token.go Normal file
View File

@ -0,0 +1,62 @@
package rsql
// Tokens for RSQL FIQL
const (
TokIllegal = "TokIllegal"
TokEOF = "TokEOF"
TokIdent = "TokIdent"
TokInteger = "TokInteger"
TokString = "TokString"
TokFloat = "TokFloat"
TokExtend = "TokExtend"
TokLParen = "("
TokRParen = ")"
TokLBracket = "["
TokRBracket = "]"
TokLIKE = "~"
TokNLIKE= "!~"
TokNOT = "!"
TokLT = "<"
TokGT = ">"
TokLE = "<="
TokGE = ">="
TokEQ = "=="
TokNEQ = "!="
TokAND = ";"
TokOR = ","
TokTRUE = "true"
TokFALSE = "false"
TokNULL = "null"
)
var keywords = map[string]TokenType {
"true": TokTRUE,
"false": TokFALSE,
"null": TokNULL,
"and": TokAND,
"or": TokOR,
}
// TokenType is a token enumeration
type TokenType string
// Token is a type and literal pair
type Token struct {
Type TokenType
Literal string
}
func newToken(tokenType TokenType, ch rune) Token {
return Token{Type: tokenType, Literal: string(ch)}
}
func lookupIdent(ident string) TokenType {
if tok, ok := keywords[ident]; ok {
return tok
}
return TokIdent
}

View File

@ -35,10 +35,11 @@ func (s *Harness) Setup(ctx context.Context, apps ...application) error {
ctx, span := lg.Span(ctx)
defer span.End()
s.onRunning = make(chan struct{})
// setup crontab
c := cron.New(cron.DefaultGranularity)
s.OnStart(c.Run)
s.onRunning = make(chan struct{})
s.crontab = c
var err error
@ -113,7 +114,6 @@ func (s *Harness) Run(ctx context.Context, appName, version string) error {
err := g.Wait()
if err != nil {
log.Printf("Shutdown due to error: %s", err)
}
return err
}

View File

@ -6,6 +6,7 @@ import (
"strings"
"go.sour.is/pkg/math"
"golang.org/x/exp/maps"
)
type Set[T comparable] map[T]struct{}
@ -33,6 +34,9 @@ func (s Set[T]) Delete(items ...T) Set[T] {
}
return s
}
func (s Set[T]) Values() []T {
return maps.Keys(s)
}
func (s Set[T]) Equal(e Set[T]) bool {
for k := range s {

View File

@ -4,6 +4,7 @@
package xdg
import (
"errors"
"os"
"path/filepath"
"strings"
@ -36,6 +37,9 @@ func setENV(name, value string) string {
return literal(name)
}
func Get(base, suffix string) string {
return strings.Join(paths(base, suffix), string(os.PathListSeparator))
}
func paths(base, suffix string) []string {
paths := strings.Split(os.ExpandEnv(base), string(os.PathListSeparator))
for i, path := range paths {
if strings.HasPrefix(path, "~") {
@ -43,7 +47,17 @@ func Get(base, suffix string) string {
}
paths[i] = os.ExpandEnv(filepath.Join(path, suffix))
}
return strings.Join(paths, string(os.PathListSeparator))
return paths
}
func Find(base, filename string) []string {
var files []string
for _, f := range paths(base, filename) {
if ok, _ := exists(f); !ok {
continue
}
files = append(files, f)
}
return files
}
func getHome() string {
@ -53,3 +67,17 @@ func getHome() string {
}
return home
}
func exists(name string) (bool, error) {
s, err := os.Stat(name)
if err == nil {
return true, nil
}
if errors.Is(err, os.ErrNotExist) {
return false, nil
}
if s.IsDir() {
return false, nil
}
return false, err
}