sour-is/ev
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

feat: inprogress

Browse Source
This commit is contained in:
Jon Lundy 2022-08-23 21:24:13 -06:00
parent 0a964cb631
commit 8c54eefcdd
Signed by untrusted user who does not match committer: xuu
GPG Key ID: C63E6D61F3035024
20 changed files with 1316 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
.air.toml
View File

@ -15,9 +15,9 @@ tmp_dir = "tmp"
full_bin = ""
include_dir = []
include_ext = ["go", "tpl", "tmpl", "html"]
kill_delay = "0s"
kill_delay = "1s"
log = "build-errors.log"
send_interrupt = false
send_interrupt = true
stop_on_error = true
[color]

0
app/playground/playground.go → app/gql/playground/playground.go
View File

123
app/gql/resolver.go Normal file
View File

@ -0,0 +1,123 @@
package gql
import (
"context"
"fmt"
"net/http"
"os"
"reflect"
"runtime/debug"
"github.com/99designs/gqlgen/graphql/handler"
"github.com/ravilushqa/otelgqlgen"
"github.com/sour-is/ev/app/gql/playground"
"github.com/sour-is/ev/app/msgbus"
"github.com/sour-is/ev/app/salty"
"github.com/sour-is/ev/internal/graph/generated"
"github.com/sour-is/ev/internal/logz"
"github.com/sour-is/ev/pkg/gql"
"github.com/vektah/gqlparser/v2/gqlerror"
)
type Resolver struct {
msgbus.MsgbusResolver
salty.SaltyResolver
}
func New(ctx context.Context, resolvers ...interface{ RegisterHTTP(*http.ServeMux) }) (*Resolver, error) {
_, span := logz.Span(ctx)
defer span.End()
r := &Resolver{}
v := reflect.ValueOf(r)
v = reflect.Indirect(v)
noop := reflect.ValueOf(&noop{})
outer:
for _, idx := range reflect.VisibleFields(v.Type()) {
field := v.FieldByIndex(idx.Index)
for i := range resolvers {
rs := reflect.ValueOf(resolvers[i])
if field.IsNil() && rs.Type().Implements(field.Type()) {
span.AddEvent(fmt.Sprint("found ", field.Type().Name()))
field.Set(rs)
break outer
}
}
span.AddEvent(fmt.Sprint("default ", field.Type().Name()))
field.Set(noop)
}
return r, nil
}
// Query returns generated.QueryResolver implementation.
func (r *Resolver) Query() generated.QueryResolver { return r }
// Query returns generated.QueryResolver implementation.
func (r *Resolver) Mutation() generated.MutationResolver { return r }
// Subscription returns generated.SubscriptionResolver implementation.
func (r *Resolver) Subscription() generated.SubscriptionResolver { return r }
// ChainMiddlewares will check all embeded resolvers for a GetMiddleware func and add to handler.
func (r *Resolver) ChainMiddlewares(h http.Handler) http.Handler {
v := reflect.ValueOf(r) // Get reflected value of *Resolver
v = reflect.Indirect(v) // Get the pointed value (returns a zero value on nil)
n := v.NumField() // Get number of fields to iterate over.
for i := 0; i < n; i++ {
f := v.Field(i)
if !f.CanInterface() { // Skip non-interface types.
continue
}
if iface, ok := f.Interface().(interface {
GetMiddleware() func(http.Handler) http.Handler
}); ok {
h = iface.GetMiddleware()(h) // Append only items that fulfill the interface.
}
}
return h
}
func (r *Resolver) RegisterHTTP(mux *http.ServeMux) {
gql := handler.NewDefaultServer(generated.NewExecutableSchema(generated.Config{Resolvers: r}))
gql.SetRecoverFunc(NoopRecover)
gql.Use(otelgqlgen.Middleware())
mux.Handle("/", playground.Handler("GraphQL playground", "/gql"))
mux.Handle("/gql", logz.Htrace(r.ChainMiddlewares(gql), "gql"))
}
type noop struct{}
func NoopRecover(ctx context.Context, err interface{}) error {
if err, ok := err.(string); ok && err == "not implemented" {
return gqlerror.Errorf("not implemented")
}
fmt.Fprintln(os.Stderr, err)
fmt.Fprintln(os.Stderr)
debug.PrintStack()
return gqlerror.Errorf("internal system error")
}
var _ msgbus.MsgbusResolver = (*noop)(nil)
var _ salty.SaltyResolver = (*noop)(nil)
func (*noop) CreateSaltyUser(ctx context.Context, nick string, pubkey string) (*salty.SaltyUser, error) {
panic("not implemented")
}
func (*noop) Posts(ctx context.Context, streamID string, paging *gql.PageInput) (*gql.Connection, error) {
panic("not implemented")
}
func (*noop) SaltyUser(ctx context.Context, nick string) (*salty.SaltyUser, error) {
panic("not implemented")
}
func (*noop) PostAdded(ctx context.Context, streamID string, after int64) (<-chan *msgbus.PostEvent, error) {
panic("not implemented")
}
func (*noop) RegisterHTTP(*http.ServeMux) {}

1
app/msgbus/service.go
View File

@ -31,6 +31,7 @@ type service struct {
type MsgbusResolver interface {
Posts(ctx context.Context, streamID string, paging *gql.PageInput) (*gql.Connection, error)
PostAdded(ctx context.Context, streamID string, after int64) (<-chan *PostEvent, error)
RegisterHTTP(mux *http.ServeMux)
}
func New(ctx context.Context, es *es.EventStore) (*service, error) {

183
app/peerfinder/peer.go Normal file
View File

@ -0,0 +1,183 @@
package peerfinder
import (
"bytes"
"encoding/json"
"net/netip"
"strconv"
"time"
"github.com/sour-is/ev/pkg/es/event"
)
type Request struct {
eventMeta event.Meta
RequestIP string `json:"req_ip"`
Hidden bool `json:"hide,omitempty"`
}
func (r *Request) StreamID() string {
return r.EventMeta().GetEventID()
}
func (r *Request) RequestID() string {
return r.EventMeta().GetEventID()
}
func (r *Request) Created() time.Time {
return r.EventMeta().Created()
}
func (r *Request) CreatedString() string {
return r.Created().Format("2006-01-02 15:04:05")
}
func (r *Request) Family() int {
if r == nil {
return 0
}
ip, err := netip.ParseAddr(r.RequestIP)
switch {
case err != nil:
return 0
case ip.Is4():
return 1
default:
return 2
}
}
var _ event.Event = (*Request)(nil)
func (e *Request) EventMeta() event.Meta {
if e == nil {
return event.Meta{}
}
return e.eventMeta
}
func (e *Request) SetEventMeta(m event.Meta) {
if e != nil {
e.eventMeta = m
}
}
func (e *Request) MarshalBinary() (text []byte, err error) {
return json.Marshal(e)
}
func (e *Request) UnmarshalBinary(b []byte) error {
return json.Unmarshal(b, e)
}
func (e *Request) MarshalEnviron() ([]byte, error) {
if e == nil {
return nil, nil
}
var b bytes.Buffer
b.WriteString("REQ_ID=")
b.WriteString(e.RequestID())
b.WriteRune('\n')
b.WriteString("REQ_IP=")
b.WriteString(e.RequestIP)
b.WriteRune('\n')
b.WriteString("REQ_FAMILY=")
if family := e.Family(); family > 0 {
b.WriteString(strconv.Itoa(family))
}
b.WriteRune('\n')
b.WriteString("REQ_CREATED=")
b.WriteString(e.CreatedString())
b.WriteRune('\n')
return b.Bytes(), nil
}
type Result struct {
eventMeta event.Meta
RequestID string `json:"req_id"`
PeerID string `json:"peer_id"`
PeerVersion string `json:"peer_version"`
Latency float64 `json:"latency,omitempty"`
}
func (r *Result) Created() time.Time {
return r.eventMeta.Created()
}
var _ event.Event = (*Result)(nil)
func (e *Result) EventMeta() event.Meta {
if e == nil {
return event.Meta{}
}
return e.eventMeta
}
func (e *Result) SetEventMeta(m event.Meta) {
if e != nil {
e.eventMeta = m
}
}
func (e *Result) MarshalBinary() (text []byte, err error) {
return json.Marshal(e)
}
func (e *Result) UnmarshalBinary(b []byte) error {
return json.Unmarshal(b, e)
}
type Info struct {
ScriptVersion string `json:"script_version"`
event.AggregateRoot
}
var _ event.Aggregate = (*Info)(nil)
func (a *Info) ApplyEvent(lis ...event.Event) {
for _, e := range lis {
switch e := e.(type) {
case *VersionChanged:
a.ScriptVersion = e.ScriptVersion
}
}
}
func (a *Info) MarshalEnviron() ([]byte, error) {
var b bytes.Buffer
b.WriteString("SCRIPT_VERSION=")
b.WriteString(a.ScriptVersion)
b.WriteRune('\n')
return b.Bytes(), nil
}
func (a *Info) OnCreate() error {
if a.StreamVersion() == 0 {
event.Raise(a, &VersionChanged{ScriptVersion: initVersion})
}
return nil
}
type VersionChanged struct {
ScriptVersion string `json:"script_version"`
eventMeta event.Meta
}
var _ event.Event = (*VersionChanged)(nil)
func (e *VersionChanged) EventMeta() event.Meta {
if e == nil {
return event.Meta{}
}
return e.eventMeta
}
func (e *VersionChanged) SetEventMeta(m event.Meta) {
if e != nil {
e.eventMeta = m
}
}
func (e *VersionChanged) MarshalBinary() (text []byte, err error) {
return json.Marshal(e)
}
func (e *VersionChanged) UnmarshalBinary(b []byte) error {
return json.Unmarshal(b, e)
}

268
app/peerfinder/service.go Normal file
View File

@ -0,0 +1,268 @@
package peerfinder
import (
"context"
"encoding/json"
"io"
"net/http"
"strconv"
"strings"
ulid "github.com/oklog/ulid/v2"
contentnegotiation "gitlab.com/jamietanna/content-negotiation-go"
"github.com/sour-is/ev/internal/logz"
"github.com/sour-is/ev/pkg/es"
"github.com/sour-is/ev/pkg/es/event"
)
const (
queueRequests = "pf-requests"
queueResponses = "pf-response-"
aggInfo = "pf-info"
initVersion = "1.1.0"
)
type service struct {
es *es.EventStore
}
func New(ctx context.Context, es *es.EventStore) (*service, error) {
ctx, span := logz.Span(ctx)
defer span.End()
if err := event.Register(ctx, &Request{}, &Result{}, &VersionChanged{}); err != nil {
span.RecordError(err)
return nil, err
}
svc := &service{es: es}
return svc, nil
}
func (s *service) RegisterHTTP(mux *http.ServeMux) {
mux.Handle("/peers/", logz.Htrace(s, "peers"))
}
func (s *service) ServeHTTP(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
_, span := logz.Span(ctx)
defer span.End()
r = r.WithContext(ctx)
switch r.Method {
case http.MethodGet:
switch {
case strings.HasPrefix(r.URL.Path, "/peers/pending/"):
s.getPending(w, r, strings.TrimPrefix(r.URL.Path, "/peers/pending/"))
return
case strings.HasPrefix(r.URL.Path, "/peers/req/"):
s.getResults(w, r, strings.TrimPrefix(r.URL.Path, "/peers/req/"))
return
default:
w.WriteHeader(http.StatusNotFound)
return
}
case http.MethodPost:
switch {
case strings.HasPrefix(r.URL.Path, "/peers/req/"):
s.postResult(w, r, strings.TrimPrefix(r.URL.Path, "/peers/req/"))
return
case strings.HasPrefix(r.URL.Path, "/peers/req"):
s.postRequest(w, r)
return
default:
w.WriteHeader(http.StatusNotFound)
return
}
default:
w.WriteHeader(http.StatusMethodNotAllowed)
return
}
}
func (s *service) getPending(w http.ResponseWriter, r *http.Request, uuid string) {
ctx := r.Context()
_, span := logz.Span(ctx)
defer span.End()
info, err := es.Upsert(ctx, s.es, "pf-info", func(ctx context.Context, agg *Info) error {
return agg.OnCreate() // initialize if not exists
})
if err != nil {
span.RecordError(err)
w.WriteHeader(http.StatusInternalServerError)
return
}
requests, err := s.es.Read(ctx, queueRequests, -1, -30)
if err != nil {
span.RecordError(err)
w.WriteHeader(http.StatusInternalServerError)
return
}
responses, err := s.es.Read(ctx, queueResponses+uuid, -1, -30)
if err != nil {
span.RecordError(err)
w.WriteHeader(http.StatusInternalServerError)
return
}
req := filter(requests, responses)
negotiator := contentnegotiation.NewNegotiator("application/json", "text/environment", "text/plain", "text/html")
negotiated, _, err := negotiator.Negotiate(r.Header.Get("Accept"))
if err != nil {
span.RecordError(err)
w.WriteHeader(http.StatusNotAcceptable)
return
}
span.AddEvent(negotiated.String())
switch negotiated.String() {
case "text/environment":
_, err = encodeTo(w, info.MarshalEnviron, req.MarshalEnviron)
case "application/json":
var out interface{} = info
if req != nil {
out = struct {
ScriptVersion string `json:"script_version"`
RequestID string `json:"req_id"`
RequestIP string `json:"req_ip"`
Family string `json:"req_family"`
Created string `json:"req_created"`
}{
info.ScriptVersion,
req.RequestID(),
req.RequestIP,
strconv.Itoa(req.Family()),
req.CreatedString(),
}
}
err = json.NewEncoder(w).Encode(out)
}
span.RecordError(err)
}
func (s *service) getResults(w http.ResponseWriter, r *http.Request, uuid string) {
ctx := r.Context()
responses, err := s.es.Read(ctx, queueResponses+uuid, -1, es.AllEvents)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
return
}
negotiator := contentnegotiation.NewNegotiator("application/json", "text/environment", "text/csv", "text/plain", "text/html")
negotiated, _, err := negotiator.Negotiate("application/json")
if err != nil {
w.WriteHeader(http.StatusNotAcceptable)
return
}
switch negotiated.String() {
// case "text/environment":
// encodeTo(w, responses.MarshalBinary)
case "application/json":
json.NewEncoder(w).Encode(responses)
}
}
func (s *service) postRequest(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
if err := r.ParseForm(); err != nil {
w.WriteHeader(http.StatusUnprocessableEntity)
return
}
req := &Request{
RequestIP: r.Form.Get("req_ip"),
}
if hidden, err := strconv.ParseBool(r.Form.Get("req_hidden")); err != nil {
req.Hidden = hidden
}
s.es.Append(ctx, queueRequests, event.NewEvents(req))
}
func (s *service) postResult(w http.ResponseWriter, r *http.Request, id string) {
ctx := r.Context()
if _, err := ulid.ParseStrict(id); err != nil {
w.WriteHeader(http.StatusNotFound)
return
}
if err := r.ParseForm(); err != nil {
w.WriteHeader(http.StatusUnprocessableEntity)
return
}
latency, err := strconv.ParseFloat(r.Form.Get("res_latency"), 64)
if err != nil {
w.WriteHeader(http.StatusUnprocessableEntity)
return
}
req := &Result{
RequestID: id,
PeerID: r.Form.Get("peer_id"),
PeerVersion: r.Form.Get("peer_version"),
Latency: latency,
}
s.es.Append(ctx, queueResponses+id, event.NewEvents(req))
}
func filter(requests, responses event.Events) *Request {
have := make(map[string]struct{}, len(responses))
for _, res := range toList[Result](responses...) {
have[res.RequestID] = struct{}{}
}
for _, req := range reverse(toList[Request](requests...)...) {
if _, ok := have[req.RequestID()]; !ok {
return req
}
}
return nil
}
func toList[E any, T es.PE[E]](lis ...event.Event) []T {
newLis := make([]T, 0, len(lis))
for i := range lis {
if e, ok := lis[i].(T); ok {
newLis = append(newLis, e)
}
}
return newLis
}
func reverse[T any](s ...T) []T {
first, last := 0, len(s)-1
for first < last {
s[first], s[last] = s[last], s[first]
first++
last--
}
return s
}
func encodeTo(w io.Writer, fns ...func() ([]byte, error)) (int, error) {
i := 0
for _, fn := range fns {
b, err := fn()
if err != nil {
return i, err
}
j, err := w.Write(b)
i += j
if err != nil {
return i, err
}
}
return i, nil
}

3
app/salty/service.go
View File

@ -35,6 +35,7 @@ var saltyKey = contextKey{"salty"}
type SaltyResolver interface {
CreateSaltyUser(ctx context.Context, nick string, pub string) (*SaltyUser, error)
SaltyUser(ctx context.Context, nick string) (*SaltyUser, error)
RegisterHTTP(mux *http.ServeMux)
}
func New(ctx context.Context, es *es.EventStore, baseURL string) (*service, error) {
@ -69,7 +70,7 @@ func (s *service) BaseURL() string {
}
return s.baseURL
}
func(s *service) RegisterHTTP(mux *http.ServeMux) {
func (s *service) RegisterHTTP(mux *http.ServeMux) {
mux.Handle("/.well-known/salty/", logz.Htrace(s, "lookup"))
}
func (s *service) ServeHTTP(w http.ResponseWriter, r *http.Request) {

5
env Normal file
View File

@ -0,0 +1,5 @@
SCRIPT_VERSION=1.1.0
REQ_ID=01GB0GDHCEAPMZFVES2KBCN7KF
REQ_IP=1.1.1.1
REQ_FAMILY=1
REQ_CREATED=2022-08-21 09:30:22

1
go.mod
View File

@ -80,6 +80,7 @@ require (
github.com/tidwall/match v1.1.1 // indirect
github.com/tidwall/pretty v1.2.0 // indirect
github.com/tidwall/tinylru v1.1.0 // indirect
gitlab.com/jamietanna/content-negotiation-go v0.2.0
go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.9.0
go.uber.org/multierr v1.8.0
)

2
go.sum
View File

@ -351,6 +351,8 @@ github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9de
github.com/yuin/goldmark v1.4.1/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
github.com/yusufpapurcu/wmi v1.2.2 h1:KBNDSne4vP5mbSWnJbO+51IMOXJB67QiYCSBrubbPRg=
github.com/yusufpapurcu/wmi v1.2.2/go.mod h1:SBZ9tNy3G9/m5Oi98Zks0QjeHVDvuK0qfxQmPyzfmi0=
gitlab.com/jamietanna/content-negotiation-go v0.2.0 h1:vT0OLEPQ6DYRG3/1F7joXSNjVQHGivJ6+JzODlJfjWw=
gitlab.com/jamietanna/content-negotiation-go v0.2.0/go.mod h1:n4ZZ8/X5TstnjYRnjEtR/fC7MCTe+aRKM7PQlLBH3PQ=
go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=

541
internal/graph/generated/generated.go
View File

@ -18,6 +18,7 @@ import (
"github.com/99designs/gqlgen/plugin/federation/fedruntime"
"github.com/sour-is/ev/app/msgbus"
"github.com/sour-is/ev/app/salty"
"github.com/sour-is/ev/internal/graph/model"
"github.com/sour-is/ev/pkg/es/event"
"github.com/sour-is/ev/pkg/gql"
gqlparser "github.com/vektah/gqlparser/v2"
@ -56,6 +57,13 @@ type ComplexityRoot struct {
Paging func(childComplexity int) int
}
Event struct {
EventID func(childComplexity int) int
EventMeta func(childComplexity int) int
ID func(childComplexity int) int
Values func(childComplexity int) int
}
Meta struct {
Created func(childComplexity int) int
GetEventID func(childComplexity int) int
@ -83,6 +91,7 @@ type ComplexityRoot struct {
}
Query struct {
Events func(childComplexity int, streamID string, paging *gql.PageInput) int
Posts func(childComplexity int, streamID string, paging *gql.PageInput) int
SaltyUser func(childComplexity int, nick string) int
__resolve__service func(childComplexity int) int
@ -96,7 +105,8 @@ type ComplexityRoot struct {
}
Subscription struct {
PostAdded func(childComplexity int, streamID string, after int64) int
EventAdded func(childComplexity int, streamID string, after int64) int
PostAdded func(childComplexity int, streamID string, after int64) int
}
_Service struct {
@ -108,10 +118,12 @@ type MutationResolver interface {
CreateSaltyUser(ctx context.Context, nick string, pubkey string) (*salty.SaltyUser, error)
}
type QueryResolver interface {
Events(ctx context.Context, streamID string, paging *gql.PageInput) (*gql.Connection, error)
Posts(ctx context.Context, streamID string, paging *gql.PageInput) (*gql.Connection, error)
SaltyUser(ctx context.Context, nick string) (*salty.SaltyUser, error)
}
type SubscriptionResolver interface {
EventAdded(ctx context.Context, streamID string, after int64) (<-chan *model.Event, error)
PostAdded(ctx context.Context, streamID string, after int64) (<-chan *msgbus.PostEvent, error)
}
@ -144,6 +156,34 @@ func (e *executableSchema) Complexity(typeName, field string, childComplexity in
return e.complexity.Connection.Paging(childComplexity), true
case "Event.eventID":
if e.complexity.Event.EventID == nil {
break
}
return e.complexity.Event.EventID(childComplexity), true
case "Event.eventMeta":
if e.complexity.Event.EventMeta == nil {
break
}
return e.complexity.Event.EventMeta(childComplexity), true
case "Event.id":
if e.complexity.Event.ID == nil {
break
}
return e.complexity.Event.ID(childComplexity), true
case "Event.values":
if e.complexity.Event.Values == nil {
break
}
return e.complexity.Event.Values(childComplexity), true
case "Meta.created":
if e.complexity.Meta.Created == nil {
break
@ -247,6 +287,18 @@ func (e *executableSchema) Complexity(typeName, field string, childComplexity in
return e.complexity.PostEvent.Tags(childComplexity), true
case "Query.events":
if e.complexity.Query.Events == nil {
break
}
args, err := ec.field_Query_events_args(context.TODO(), rawArgs)
if err != nil {
return 0, false
}
return e.complexity.Query.Events(childComplexity, args["streamID"].(string), args["paging"].(*gql.PageInput)), true
case "Query.posts":
if e.complexity.Query.Posts == nil {
break
@ -306,6 +358,18 @@ func (e *executableSchema) Complexity(typeName, field string, childComplexity in
return e.complexity.SaltyUser.Pubkey(childComplexity), true
case "Subscription.eventAdded":
if e.complexity.Subscription.EventAdded == nil {
break
}
args, err := ec.field_Subscription_eventAdded_args(context.TODO(), rawArgs)
if err != nil {
return 0, false
}
return e.complexity.Subscription.EventAdded(childComplexity, args["streamID"].(string), args["after"].(int64)), true
case "Subscription.postAdded":
if e.complexity.Subscription.PostAdded == nil {
break
@ -417,6 +481,22 @@ type Meta @goModel(model: "github.com/sour-is/ev/pkg/es/event.Meta") {
streamID: String!
created: Time!
position: Int!
}
extend type Query {
events(streamID: String! paging: PageInput): Connection!
}
extend type Subscription {
"""after == 0 start from begining, after == -1 start from end"""
eventAdded(streamID: String! after: Int! = -1): Event
}
type Event implements Edge {
id: ID!
eventID: String!
values: Map!
eventMeta: Meta!
}`, BuiltIn: false},
{Name: "../../../pkg/gql/common.graphqls", Input: `scalar Time
scalar Map
@ -550,6 +630,30 @@ func (ec *executionContext) field_Query___type_args(ctx context.Context, rawArgs
return args, nil
}
func (ec *executionContext) field_Query_events_args(ctx context.Context, rawArgs map[string]interface{}) (map[string]interface{}, error) {
var err error
args := map[string]interface{}{}
var arg0 string
if tmp, ok := rawArgs["streamID"]; ok {
ctx := graphql.WithPathContext(ctx, graphql.NewPathWithField("streamID"))
arg0, err = ec.unmarshalNString2string(ctx, tmp)
if err != nil {
return nil, err
}
}
args["streamID"] = arg0
var arg1 *gql.PageInput
if tmp, ok := rawArgs["paging"]; ok {
ctx := graphql.WithPathContext(ctx, graphql.NewPathWithField("paging"))
arg1, err = ec.unmarshalOPageInput2ᚖgithubᚗcomᚋsourᚑisᚋevᚋpkgᚋgqlᚐPageInput(ctx, tmp)
if err != nil {
return nil, err
}
}
args["paging"] = arg1
return args, nil
}
func (ec *executionContext) field_Query_posts_args(ctx context.Context, rawArgs map[string]interface{}) (map[string]interface{}, error) {
var err error
args := map[string]interface{}{}
@ -589,6 +693,30 @@ func (ec *executionContext) field_Query_saltyUser_args(ctx context.Context, rawA
return args, nil
}
func (ec *executionContext) field_Subscription_eventAdded_args(ctx context.Context, rawArgs map[string]interface{}) (map[string]interface{}, error) {
var err error
args := map[string]interface{}{}
var arg0 string
if tmp, ok := rawArgs["streamID"]; ok {
ctx := graphql.WithPathContext(ctx, graphql.NewPathWithField("streamID"))
arg0, err = ec.unmarshalNString2string(ctx, tmp)
if err != nil {
return nil, err
}
}
args["streamID"] = arg0
var arg1 int64
if tmp, ok := rawArgs["after"]; ok {
ctx := graphql.WithPathContext(ctx, graphql.NewPathWithField("after"))
arg1, err = ec.unmarshalNInt2int64(ctx, tmp)
if err != nil {
return nil, err
}
}
args["after"] = arg1
return args, nil
}
func (ec *executionContext) field_Subscription_postAdded_args(ctx context.Context, rawArgs map[string]interface{}) (map[string]interface{}, error) {
var err error
args := map[string]interface{}{}
@ -749,6 +877,192 @@ func (ec *executionContext) fieldContext_Connection_edges(ctx context.Context, f
return fc, nil
}
func (ec *executionContext) _Event_id(ctx context.Context, field graphql.CollectedField, obj *model.Event) (ret graphql.Marshaler) {
fc, err := ec.fieldContext_Event_id(ctx, field)
if err != nil {
return graphql.Null
}
ctx = graphql.WithFieldContext(ctx, fc)
defer func() {
if r := recover(); r != nil {
ec.Error(ctx, ec.Recover(ctx, r))
ret = graphql.Null
}
}()
resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
ctx = rctx // use context from middleware stack in children
return obj.ID, nil
})
if err != nil {
ec.Error(ctx, err)
return graphql.Null
}
if resTmp == nil {
if !graphql.HasFieldError(ctx, fc) {
ec.Errorf(ctx, "must not be null")
}
return graphql.Null
}
res := resTmp.(string)
fc.Result = res
return ec.marshalNID2string(ctx, field.Selections, res)
}
func (ec *executionContext) fieldContext_Event_id(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
fc = &graphql.FieldContext{
Object: "Event",
Field: field,
IsMethod: false,
IsResolver: false,
Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
return nil, errors.New("field of type ID does not have child fields")
},
}
return fc, nil
}
func (ec *executionContext) _Event_eventID(ctx context.Context, field graphql.CollectedField, obj *model.Event) (ret graphql.Marshaler) {
fc, err := ec.fieldContext_Event_eventID(ctx, field)
if err != nil {
return graphql.Null
}
ctx = graphql.WithFieldContext(ctx, fc)
defer func() {
if r := recover(); r != nil {
ec.Error(ctx, ec.Recover(ctx, r))
ret = graphql.Null
}
}()
resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
ctx = rctx // use context from middleware stack in children
return obj.EventID, nil
})
if err != nil {
ec.Error(ctx, err)
return graphql.Null
}
if resTmp == nil {
if !graphql.HasFieldError(ctx, fc) {
ec.Errorf(ctx, "must not be null")
}
return graphql.Null
}
res := resTmp.(string)
fc.Result = res
return ec.marshalNString2string(ctx, field.Selections, res)
}
func (ec *executionContext) fieldContext_Event_eventID(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
fc = &graphql.FieldContext{
Object: "Event",
Field: field,
IsMethod: false,
IsResolver: false,
Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
return nil, errors.New("field of type String does not have child fields")
},
}
return fc, nil
}
func (ec *executionContext) _Event_values(ctx context.Context, field graphql.CollectedField, obj *model.Event) (ret graphql.Marshaler) {
fc, err := ec.fieldContext_Event_values(ctx, field)
if err != nil {
return graphql.Null
}
ctx = graphql.WithFieldContext(ctx, fc)
defer func() {
if r := recover(); r != nil {
ec.Error(ctx, ec.Recover(ctx, r))
ret = graphql.Null
}
}()
resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
ctx = rctx // use context from middleware stack in children
return obj.Values, nil
})
if err != nil {
ec.Error(ctx, err)
return graphql.Null
}
if resTmp == nil {
if !graphql.HasFieldError(ctx, fc) {
ec.Errorf(ctx, "must not be null")
}
return graphql.Null
}
res := resTmp.(map[string]interface{})
fc.Result = res
return ec.marshalNMap2map(ctx, field.Selections, res)
}
func (ec *executionContext) fieldContext_Event_values(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
fc = &graphql.FieldContext{
Object: "Event",
Field: field,
IsMethod: false,
IsResolver: false,
Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
return nil, errors.New("field of type Map does not have child fields")
},
}
return fc, nil
}
func (ec *executionContext) _Event_eventMeta(ctx context.Context, field graphql.CollectedField, obj *model.Event) (ret graphql.Marshaler) {
fc, err := ec.fieldContext_Event_eventMeta(ctx, field)
if err != nil {
return graphql.Null
}
ctx = graphql.WithFieldContext(ctx, fc)
defer func() {
if r := recover(); r != nil {
ec.Error(ctx, ec.Recover(ctx, r))
ret = graphql.Null
}
}()
resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
ctx = rctx // use context from middleware stack in children
return obj.EventMeta, nil
})
if err != nil {
ec.Error(ctx, err)
return graphql.Null
}
if resTmp == nil {
if !graphql.HasFieldError(ctx, fc) {
ec.Errorf(ctx, "must not be null")
}
return graphql.Null
}
res := resTmp.(*event.Meta)
fc.Result = res
return ec.marshalNMeta2ᚖgithubᚗcomᚋsourᚑisᚋevᚋpkgᚋesᚋeventᚐMeta(ctx, field.Selections, res)
}
func (ec *executionContext) fieldContext_Event_eventMeta(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
fc = &graphql.FieldContext{
Object: "Event",
Field: field,
IsMethod: false,
IsResolver: false,
Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
switch field.Name {
case "eventID":
return ec.fieldContext_Meta_eventID(ctx, field)
case "streamID":
return ec.fieldContext_Meta_streamID(ctx, field)
case "created":
return ec.fieldContext_Meta_created(ctx, field)
case "position":
return ec.fieldContext_Meta_position(ctx, field)
}
return nil, fmt.Errorf("no field named %q was found under type Meta", field.Name)
},
}
return fc, nil
}
func (ec *executionContext) _Meta_eventID(ctx context.Context, field graphql.CollectedField, obj *event.Meta) (ret graphql.Marshaler) {
fc, err := ec.fieldContext_Meta_eventID(ctx, field)
if err != nil {
@ -1393,6 +1707,67 @@ func (ec *executionContext) fieldContext_PostEvent_meta(ctx context.Context, fie
return fc, nil
}
func (ec *executionContext) _Query_events(ctx context.Context, field graphql.CollectedField) (ret graphql.Marshaler) {
fc, err := ec.fieldContext_Query_events(ctx, field)
if err != nil {
return graphql.Null
}
ctx = graphql.WithFieldContext(ctx, fc)
defer func() {
if r := recover(); r != nil {
ec.Error(ctx, ec.Recover(ctx, r))
ret = graphql.Null
}
}()
resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
ctx = rctx // use context from middleware stack in children
return ec.resolvers.Query().Events(rctx, fc.Args["streamID"].(string), fc.Args["paging"].(*gql.PageInput))
})
if err != nil {
ec.Error(ctx, err)
return graphql.Null
}
if resTmp == nil {
if !graphql.HasFieldError(ctx, fc) {
ec.Errorf(ctx, "must not be null")
}
return graphql.Null
}
res := resTmp.(*gql.Connection)
fc.Result = res
return ec.marshalNConnection2ᚖgithubᚗcomᚋsourᚑisᚋevᚋpkgᚋgqlᚐConnection(ctx, field.Selections, res)
}
func (ec *executionContext) fieldContext_Query_events(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
fc = &graphql.FieldContext{
Object: "Query",
Field: field,
IsMethod: true,
IsResolver: true,
Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
switch field.Name {
case "paging":
return ec.fieldContext_Connection_paging(ctx, field)
case "edges":
return ec.fieldContext_Connection_edges(ctx, field)
}
return nil, fmt.Errorf("no field named %q was found under type Connection", field.Name)
},
}
defer func() {
if r := recover(); r != nil {
err = ec.Recover(ctx, r)
ec.Error(ctx, err)
}
}()
ctx = graphql.WithFieldContext(ctx, fc)
if fc.Args, err = ec.field_Query_events_args(ctx, field.ArgumentMap(ec.Variables)); err != nil {
ec.Error(ctx, err)
return
}
return fc, nil
}
func (ec *executionContext) _Query_posts(ctx context.Context, field graphql.CollectedField) (ret graphql.Marshaler) {
fc, err := ec.fieldContext_Query_posts(ctx, field)
if err != nil {
@ -1869,6 +2244,82 @@ func (ec *executionContext) fieldContext_SaltyUser_endpoint(ctx context.Context,
return fc, nil
}
func (ec *executionContext) _Subscription_eventAdded(ctx context.Context, field graphql.CollectedField) (ret func(ctx context.Context) graphql.Marshaler) {
fc, err := ec.fieldContext_Subscription_eventAdded(ctx, field)
if err != nil {
return nil
}
ctx = graphql.WithFieldContext(ctx, fc)
defer func() {
if r := recover(); r != nil {
ec.Error(ctx, ec.Recover(ctx, r))
ret = nil
}
}()
resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
ctx = rctx // use context from middleware stack in children
return ec.resolvers.Subscription().EventAdded(rctx, fc.Args["streamID"].(string), fc.Args["after"].(int64))
})
if err != nil {
ec.Error(ctx, err)
return nil
}
if resTmp == nil {
return nil
}
return func(ctx context.Context) graphql.Marshaler {
select {
case res, ok := <-resTmp.(<-chan *model.Event):
if !ok {
return nil
}
return graphql.WriterFunc(func(w io.Writer) {
w.Write([]byte{'{'})
graphql.MarshalString(field.Alias).MarshalGQL(w)
w.Write([]byte{':'})
ec.marshalOEvent2ᚖgithubᚗcomᚋsourᚑisᚋevᚋinternalᚋgraphᚋmodelᚐEvent(ctx, field.Selections, res).MarshalGQL(w)
w.Write([]byte{'}'})
})
case <-ctx.Done():
return nil
}
}
}
func (ec *executionContext) fieldContext_Subscription_eventAdded(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
fc = &graphql.FieldContext{
Object: "Subscription",
Field: field,
IsMethod: true,
IsResolver: true,
Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
switch field.Name {
case "id":
return ec.fieldContext_Event_id(ctx, field)
case "eventID":
return ec.fieldContext_Event_eventID(ctx, field)
case "values":
return ec.fieldContext_Event_values(ctx, field)
case "eventMeta":
return ec.fieldContext_Event_eventMeta(ctx, field)
}
return nil, fmt.Errorf("no field named %q was found under type Event", field.Name)
},
}
defer func() {
if r := recover(); r != nil {
err = ec.Recover(ctx, r)
ec.Error(ctx, err)
}
}()
ctx = graphql.WithFieldContext(ctx, fc)
if fc.Args, err = ec.field_Subscription_eventAdded_args(ctx, field.ArgumentMap(ec.Variables)); err != nil {
ec.Error(ctx, err)
return
}
return fc, nil
}
func (ec *executionContext) _Subscription_postAdded(ctx context.Context, field graphql.CollectedField) (ret func(ctx context.Context) graphql.Marshaler) {
fc, err := ec.fieldContext_Subscription_postAdded(ctx, field)
if err != nil {
@ -3812,6 +4263,13 @@ func (ec *executionContext) _Edge(ctx context.Context, sel ast.SelectionSet, obj
switch obj := (obj).(type) {
case nil:
return graphql.Null
case model.Event:
return ec._Event(ctx, sel, &obj)
case *model.Event:
if obj == nil {
return graphql.Null
}
return ec._Event(ctx, sel, obj)
case *msgbus.PostEvent:
if obj == nil {
return graphql.Null
@ -3861,6 +4319,55 @@ func (ec *executionContext) _Connection(ctx context.Context, sel ast.SelectionSe
return out
}
var eventImplementors = []string{"Event", "Edge"}
func (ec *executionContext) _Event(ctx context.Context, sel ast.SelectionSet, obj *model.Event) graphql.Marshaler {
fields := graphql.CollectFields(ec.OperationContext, sel, eventImplementors)
out := graphql.NewFieldSet(fields)
var invalids uint32
for i, field := range fields {
switch field.Name {
case "__typename":
out.Values[i] = graphql.MarshalString("Event")
case "id":
out.Values[i] = ec._Event_id(ctx, field, obj)
if out.Values[i] == graphql.Null {
invalids++
}
case "eventID":
out.Values[i] = ec._Event_eventID(ctx, field, obj)
if out.Values[i] == graphql.Null {
invalids++
}
case "values":
out.Values[i] = ec._Event_values(ctx, field, obj)
if out.Values[i] == graphql.Null {
invalids++
}
case "eventMeta":
out.Values[i] = ec._Event_eventMeta(ctx, field, obj)
if out.Values[i] == graphql.Null {
invalids++
}
default:
panic("unknown field " + strconv.Quote(field.Name))
}
}
out.Dispatch()
if invalids > 0 {
return graphql.Null
}
return out
}
var metaImplementors = []string{"Meta"}
func (ec *executionContext) _Meta(ctx context.Context, sel ast.SelectionSet, obj *event.Meta) graphql.Marshaler {
@ -4083,6 +4590,29 @@ func (ec *executionContext) _Query(ctx context.Context, sel ast.SelectionSet) gr
switch field.Name {
case "__typename":
out.Values[i] = graphql.MarshalString("Query")
case "events":
field := field
innerFunc := func(ctx context.Context) (res graphql.Marshaler) {
defer func() {
if r := recover(); r != nil {
ec.Error(ctx, ec.Recover(ctx, r))
}
}()
res = ec._Query_events(ctx, field)
if res == graphql.Null {
atomic.AddUint32(&invalids, 1)
}
return res
}
rrm := func(ctx context.Context) graphql.Marshaler {
return ec.OperationContext.RootResolverMiddleware(ctx, innerFunc)
}
out.Concurrently(i, func() graphql.Marshaler {
return rrm(innerCtx)
})
case "posts":
field := field
@ -4247,6 +4777,8 @@ func (ec *executionContext) _Subscription(ctx context.Context, sel ast.Selection
}
switch fields[0].Name {
case "eventAdded":
return ec._Subscription_eventAdded(ctx, fields[0])
case "postAdded":
return ec._Subscription_postAdded(ctx, fields[0])
default:
@ -5126,6 +5658,13 @@ func (ec *executionContext) marshalOBoolean2ᚖbool(ctx context.Context, sel ast
return res
}
func (ec *executionContext) marshalOEvent2ᚖgithubᚗcomᚋsourᚑisᚋevᚋinternalᚋgraphᚋmodelᚐEvent(ctx context.Context, sel ast.SelectionSet, v *model.Event) graphql.Marshaler {
if v == nil {
return graphql.Null
}
return ec._Event(ctx, sel, v)
}
func (ec *executionContext) unmarshalOInt2ᚖint64(ctx context.Context, v interface{}) (*int64, error) {
if v == nil {
return nil, nil

13
internal/graph/model/models_gen.go
View File

@ -1,3 +1,16 @@
// Code generated by github.com/99designs/gqlgen, DO NOT EDIT.
package model
import (
"github.com/sour-is/ev/pkg/es/event"
)
type Event struct {
ID string `json:"id"`
EventID string `json:"eventID"`
Values map[string]interface{} `json:"values"`
EventMeta *event.Meta `json:"eventMeta"`
}
func (Event) IsEdge() {}

30
internal/logz/init.go
View File

@ -4,6 +4,7 @@ import (
"context"
"log"
"os"
"strings"
"go.uber.org/multierr"
)
@ -34,9 +35,34 @@ func Init(ctx context.Context, name string) (context.Context, func() error) {
}
func env(name, defaultValue string) string {
if v := os.Getenv(name); v != "" {
log.Println("# ", name, " = ", v)
name = strings.TrimSpace(name)
defaultValue = strings.TrimSpace(defaultValue)
if v := strings.TrimSpace(os.Getenv(name)); v != "" {
log.Println("# ", name, "=", v)
return v
}
log.Println("# ", name, "=", defaultValue, "(default)")
return defaultValue
}
type secret string
func (s secret) String() string {
if s == "" {
return "(nil)"
}
return "***"
}
func (s secret) Secret() string {
return string(s)
}
func envSecret(name, defaultValue string) secret {
name = strings.TrimSpace(name)
defaultValue = strings.TrimSpace(defaultValue)
if v := strings.TrimSpace(os.Getenv(name)); v != "" {
log.Println("# ", name, "=", secret(v))
return secret(v)
}
log.Println("# ", name, "=", secret(defaultValue), "(default)")
return secret(defaultValue)
}

4
internal/logz/logger.go
View File

@ -64,13 +64,13 @@ func initLogger(name string) func() error {
log.SetPrefix("[" + name + "] ")
log.SetFlags(log.LstdFlags&^(log.Ldate|log.Ltime) | log.Lshortfile)
token := env("LOGZIO_LOG_TOKEN", "")
token := envSecret("LOGZIO_LOG_TOKEN", "")
if token == "" {
return nil
}
l, err := logzio.New(
token,
token.Secret(),
// logzio.SetDebug(os.Stderr),
logzio.SetUrl(env("LOGZIO_LOG_URL", "https://listener.logz.io:8071")),
logzio.SetDrainDuration(time.Second*5),

6
internal/logz/tracer.go
View File

@ -71,9 +71,13 @@ func initTracing(ctx context.Context, name string) (context.Context, func() erro
return ctx, nil
}
exporterAddr := env("EV_TRACE_ENDPOINT", "")
if exporterAddr == "" {
return ctx, nil
}
traceExporter, err := otlptracehttp.New(ctx,
otlptracehttp.WithInsecure(),
otlptracehttp.WithEndpoint("localhost:4318"),
otlptracehttp.WithEndpoint(exporterAddr),
)
if err != nil {
log.Println(wrap(err, "failed to create trace exporter"))

96
main.go
View File

@ -1,12 +1,15 @@
package main
import (
"bytes"
"context"
"fmt"
"log"
"net/http"
"os"
"os/signal"
"path"
"strings"
"time"
"github.com/rs/cors"
@ -14,6 +17,7 @@ import (
"github.com/sour-is/ev/app/gql"
"github.com/sour-is/ev/app/msgbus"
"github.com/sour-is/ev/app/peerfinder"
"github.com/sour-is/ev/app/salty"
"github.com/sour-is/ev/internal/logz"
"github.com/sour-is/ev/pkg/es"
@ -57,25 +61,55 @@ func run(ctx context.Context) error {
Addr: env("EV_HTTP", ":8080"),
}
salty, err := salty.New(ctx, es, path.Join(env("EV_BASE_URL", "http://localhost"+s.Addr), "inbox"))
if err != nil {
span.RecordError(err)
return err
if strings.HasPrefix(s.Addr, ":") {
s.Addr = "[::]" + s.Addr
}
msgbus, err := msgbus.New(ctx, es)
if err != nil {
span.RecordError(err)
return err
enable := set(strings.Fields(env("EV_ENABLE", "salty msgbus gql peers"))...)
var svcs []interface{ RegisterHTTP(*http.ServeMux) }
if enable.Has("salty") {
span.AddEvent("Enable Salty")
salty, err := salty.New(ctx, es, path.Join(env("EV_BASE_URL", "http://"+s.Addr), "inbox"))
if err != nil {
span.RecordError(err)
return err
}
svcs = append(svcs, salty)
}
gql, err := gql.New(ctx, msgbus, salty)
if err != nil {
span.RecordError(err)
return err
if enable.Has("msgbus") {
span.AddEvent("Enable Msgbus")
msgbus, err := msgbus.New(ctx, es)
if err != nil {
span.RecordError(err)
return err
}
svcs = append(svcs, msgbus)
}
s.Handler = httpMux(logz.NewHTTP(ctx), msgbus, salty, gql)
if enable.Has("peers") {
span.AddEvent("Enable Peers")
peers, err := peerfinder.New(ctx, es)
if err != nil {
span.RecordError(err)
return err
}
svcs = append(svcs, peers)
}
if enable.Has("gql") {
span.AddEvent("Enable GraphQL")
gql, err := gql.New(ctx, svcs...)
if err != nil {
span.RecordError(err)
return err
}
svcs = append(svcs, gql)
}
svcs = append(svcs, logz.NewHTTP(ctx))
s.Handler = httpMux(svcs...)
log.Print("Listen on ", s.Addr)
span.AddEvent("begin listen and serve")
@ -104,10 +138,13 @@ func run(ctx context.Context) error {
return nil
}
func env(name, defaultValue string) string {
if v := os.Getenv(name); v != "" {
log.Println("# ", name, " = ", v)
name = strings.TrimSpace(name)
defaultValue = strings.TrimSpace(defaultValue)
if v := strings.TrimSpace(os.Getenv(name)); v != "" {
log.Println("#", name, "=", v)
return v
}
log.Println("#", name, "=", defaultValue, "(default)")
return defaultValue
}
func httpMux(fns ...interface{ RegisterHTTP(*http.ServeMux) }) http.Handler {
@ -117,3 +154,32 @@ func httpMux(fns ...interface{ RegisterHTTP(*http.ServeMux) }) http.Handler {
}
return cors.AllowAll().Handler(mux)
}
type Set[T comparable] map[T]struct{}
func set[T comparable](items ...T) Set[T] {
s := make(map[T]struct{}, len(items))
for i := range items {
s[items[i]] = struct{}{}
}
return s
}
func (s Set[T]) Has(v T) bool {
_, ok := (s)[v]
return ok
}
func (s Set[T]) String() string {
if s == nil {
return "set(<nil>)"
}
lis := make([]string, 0, len(s))
for k := range s {
lis = append(lis, fmt.Sprint(k))
}
var b bytes.Buffer
b.WriteString("set(")
b.WriteString(strings.Join(lis, ","))
b.WriteString(")")
return b.String()
}

31
pkg/es/es.go
View File

@ -224,6 +224,10 @@ type PA[T any] interface {
event.Aggregate
*T
}
type PE[T any] interface {
event.Event
*T
}
// Create uses fn to create a new aggregate and store in db.
func Create[A any, T PA[A]](ctx context.Context, es *EventStore, streamID string, fn func(context.Context, T) error) (agg T, err error) {
@ -281,3 +285,30 @@ func Update[A any, T PA[A]](ctx context.Context, es *EventStore, streamID string
return
}
// Update uses fn to update an exsisting aggregate and store in db.
func Upsert[A any, T PA[A]](ctx context.Context, es *EventStore, streamID string, fn func(context.Context, T) error) (agg T, err error) {
ctx, span := logz.Span(ctx)
defer span.End()
agg = new(A)
agg.SetStreamID(streamID)
if err = es.Load(ctx, agg); err != nil {
return
}
if err = fn(ctx, agg); err != nil {
return
}
if err = event.ShouldExist(agg); err != nil {
return
}
if _, err = es.Save(ctx, agg); err != nil {
return
}
return
}

16
pkg/es/es.graphqls
View File

@ -4,4 +4,20 @@ type Meta @goModel(model: "github.com/sour-is/ev/pkg/es/event.Meta") {
streamID: String!
created: Time!
position: Int!
}
extend type Query {
events(streamID: String! paging: PageInput): Connection!
}
extend type Subscription {
"""after == 0 start from begining, after == -1 start from end"""
eventAdded(streamID: String! after: Int! = -1): Event
}
type Event implements Edge {
id: ID!
eventID: String!
values: Map!
eventMeta: Meta!
}

8
pkg/es/event/aggregate.go
View File

@ -29,16 +29,16 @@ func Append(a Aggregate, lis ...Event) {
// NotExists returns error if there are no events present.
func NotExists(a Aggregate) error {
if a.StreamVersion() != 0 {
return fmt.Errorf("%w, got version == %d", ErrShouldNotExist, a.StreamVersion())
if a.Version() != 0 {
return fmt.Errorf("%w, got version == %d", ErrShouldNotExist, a.Version())
}
return nil
}
// ShouldExists returns error if there are no events present.
func ShouldExist(a Aggregate) error {
if a.StreamVersion() == 0 {
return fmt.Errorf("%w, got version == %d", ErrShouldExist, a.StreamVersion())
if a.Version() == 0 {
return fmt.Errorf("%w, got version == %d", ErrShouldExist, a.Version())
}
return nil
}

9
pkg/es/event/reflect.go
View File

@ -246,3 +246,12 @@ func embedJSON(s string) json.RawMessage {
}
return []byte(fmt.Sprintf(`"%s"`, strings.Replace(s, `"`, `\"`, -1)))
}
func values(e Event) map[string]any {
m := make(map[string]any)
v := reflect.ValueOf(e)
for _, idx := range reflect.VisibleFields(v) {
field := v.FieldByIndex(idx.Index)
m[field.]
}
}