feat: create webfinger app

This commit is contained in:
Jon Lundy 2023-01-11 19:42:06 -07:00
parent 17569cfb2b
commit 352443f172
Signed by untrusted user who does not match committer: xuu
GPG Key ID: C63E6D61F3035024
15 changed files with 1263 additions and 6 deletions

117
app/webfinger/events.go Normal file
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package webfinger
import (
"encoding/json"
"github.com/sour-is/ev/pkg/es/event"
)
type SubjectSet struct {
Subject string `json:"subject"`
Aliases []string `json:"aliases,omitempty"`
Properties map[string]*string `json:"properties,omitempty"`
eventMeta event.Meta
}
func (e *SubjectSet) EventMeta() event.Meta {
if e == nil {
return event.Meta{}
}
return e.eventMeta
}
func (e *SubjectSet) SetEventMeta(m event.Meta) {
if e != nil {
e.eventMeta = m
}
}
func (e *SubjectSet) MarshalBinary() (text []byte, err error) {
return json.Marshal(e)
}
func (e *SubjectSet) UnmarshalBinary(b []byte) error {
return json.Unmarshal(b, e)
}
var _ event.Event = (*SubjectSet)(nil)
type SubjectDeleted struct {
Subject string `json:"subject"`
eventMeta event.Meta
}
func (e *SubjectDeleted) EventMeta() event.Meta {
if e == nil {
return event.Meta{}
}
return e.eventMeta
}
func (e *SubjectDeleted) SetEventMeta(m event.Meta) {
if e != nil {
e.eventMeta = m
}
}
func (e *SubjectDeleted) MarshalBinary() (text []byte, err error) {
return json.Marshal(e)
}
func (e *SubjectDeleted) UnmarshalBinary(b []byte) error {
return json.Unmarshal(b, e)
}
var _ event.Event = (*SubjectDeleted)(nil)
type LinkSet struct {
Rel string `json:"rel"`
Type string `json:"type,omitempty"`
HRef string `json:"href,omitempty"`
Titles map[string]string `json:"titles,omitempty"`
Properties map[string]*string `json:"properties,omitempty"`
eventMeta event.Meta
}
func (e *LinkSet) EventMeta() event.Meta {
if e == nil {
return event.Meta{}
}
return e.eventMeta
}
func (e *LinkSet) SetEventMeta(m event.Meta) {
if e != nil {
e.eventMeta = m
}
}
func (e *LinkSet) MarshalBinary() (text []byte, err error) {
return json.Marshal(e)
}
func (e *LinkSet) UnmarshalBinary(b []byte) error {
return json.Unmarshal(b, e)
}
var _ event.Event = (*LinkSet)(nil)
type LinkDeleted struct {
Rel string `json:"rel"`
eventMeta event.Meta
}
func (e *LinkDeleted) EventMeta() event.Meta {
if e == nil {
return event.Meta{}
}
return e.eventMeta
}
func (e *LinkDeleted) SetEventMeta(m event.Meta) {
if e != nil {
e.eventMeta = m
}
}
func (e *LinkDeleted) MarshalBinary() (text []byte, err error) {
return json.Marshal(e)
}
func (e *LinkDeleted) UnmarshalBinary(b []byte) error {
return json.Unmarshal(b, e)
}
var _ event.Event = (*LinkDeleted)(nil)

303
app/webfinger/jrd.go Normal file
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package webfinger
import (
"encoding/base64"
"encoding/json"
"fmt"
"hash/fnv"
"sort"
"github.com/sour-is/ev/pkg/es/event"
"github.com/sour-is/ev/pkg/slice"
)
func StreamID(subject string) string {
h := fnv.New128a()
h.Write([]byte(subject))
return "webfinger." + base64.RawURLEncoding.EncodeToString(h.Sum(nil))
}
// JRD is a JSON Resource Descriptor, specifying properties and related links
// for a resource.
type JRD struct {
Subject string `json:"subject,omitempty"`
Aliases []string `json:"aliases,omitempty"`
Properties map[string]*string `json:"properties,omitempty"`
Links Links `json:"links,omitempty"`
deleted bool
event.AggregateRoot
}
var _ event.Aggregate = (*JRD)(nil)
// Link is a link to a related resource.
type Link struct {
Rel string `json:"rel,omitempty"`
Type string `json:"type,omitempty"`
HRef string `json:"href,omitempty"`
Titles map[string]string `json:"titles,omitempty"`
Properties map[string]*string `json:"properties,omitempty"`
}
type Links []*Link
// Len is the number of elements in the collection.
func (l Links) Len() int {
if l == nil {
return 0
}
return len(l)
}
// Less reports whether the element with index i
func (l Links) Less(i int, j int) bool {
if l[i] == nil || l[j] == nil {
return false
}
return l[i].Rel < l[j].Rel
}
// Swap swaps the elements with indexes i and j.
func (l Links) Swap(i int, j int) {
if l == nil {
return
}
l[i], l[j] = l[j], l[i]
}
// ParseJRD parses the JRD using json.Unmarshal.
func ParseJRD(blob []byte) (*JRD, error) {
jrd := JRD{}
err := json.Unmarshal(blob, &jrd)
if err != nil {
return nil, err
}
return &jrd, nil
}
// GetLinkByRel returns the first *Link with the specified rel value.
func (jrd *JRD) GetLinkByRel(rel string) *Link {
for _, link := range jrd.Links {
if link.Rel == rel {
return link
}
}
return nil
}
// GetProperty Returns the property value as a string.
// Per spec a property value can be null, empty string is returned in this case.
func (jrd *JRD) GetProperty(uri string) string {
if jrd.Properties[uri] == nil {
return ""
}
return *jrd.Properties[uri]
}
// GetProperty Returns the property value as a string.
// Per spec a property value can be null, empty string is returned in this case.
func (link *Link) GetProperty(uri string) string {
if link.Properties[uri] == nil {
return ""
}
return *link.Properties[uri]
}
func (link *Link) SetProperty(name string, value *string) {
if link.Properties == nil {
link.Properties = make(map[string]*string)
}
link.Properties[name] = value
}
// ApplyEvent implements event.Aggregate
func (a *JRD) ApplyEvent(events ...event.Event) {
for _, e := range events {
switch e := e.(type) {
case *SubjectSet:
a.Subject = e.Subject
a.Aliases = e.Aliases
a.Properties = e.Properties
case *SubjectDeleted:
a.deleted = true
a.Subject = ""
a.Aliases = a.Aliases[:0]
a.Links = a.Links[:0]
a.Properties = map[string]*string{}
case *LinkSet:
link, ok := slice.FindFn(func(l *Link) bool { return l.Rel == e.Rel }, a.Links...)
if !ok {
link = &Link{}
link.Rel = e.Rel
a.Links = append(a.Links, link)
}
link.HRef = e.HRef
link.Type = e.Type
link.Titles = e.Titles
link.Properties = e.Properties
case *LinkDeleted:
a.Links = slice.FilterFn(func(link *Link) bool { return link.Rel != e.Rel }, a.Links...)
}
}
}
const NSpubkey = "https://sour.is/ns/pub"
func (a *JRD) OnClaims(method, pubkey string, jrd *JRD) error {
if a.Version() > 0 {
if v, ok := a.Properties[NSpubkey]; ok && v != nil && *v == pubkey {
// pubkey matches!
} else {
return fmt.Errorf("pubkey does not match")
}
if a.Subject != jrd.Subject {
return fmt.Errorf("subject does not match")
}
if method == "DELETE" {
event.Raise(a, &SubjectDeleted{Subject: jrd.Subject})
return nil
}
}
jrd.SetProperty(NSpubkey, &pubkey)
err := a.OnSubjectSet(jrd.Subject, jrd.Aliases, jrd.Properties)
if err != nil {
return err
}
sort.Sort(jrd.Links)
sort.Sort(a.Links)
for _, z := range slice.Align(
jrd.Links,
a.Links,
func(l, r *Link) bool { return l.Rel < r.Rel },
) {
// Not in new == delete
if z.Key == nil {
link := *z.Value
event.Raise(a, &LinkDeleted{Rel: link.Rel})
continue
}
// Not in old == create
if z.Value == nil {
link := *z.Key
event.Raise(a, &LinkSet{
Rel: link.Rel,
Type: link.Type,
HRef: link.HRef,
Titles: link.Titles,
Properties: link.Properties,
})
continue
}
// in both == compare
a.OnLinkSet(*z.Key, *z.Value)
}
return nil
}
func (a *JRD) OnSubjectSet(subject string, aliases []string, props map[string]*string) error {
modified := false
e := &SubjectSet{
Subject: subject,
Aliases: aliases,
Properties: props,
}
if subject != a.Subject {
modified = true
}
sort.Strings(aliases)
sort.Strings(a.Aliases)
for _, z := range slice.Zip(aliases, a.Aliases) {
if z.Key != z.Value {
modified = true
break
}
}
for _, z := range slice.Zip(
slice.Zip(slice.FromMap(props)),
slice.Zip(slice.FromMap(a.Properties)),
) {
if z.Key != z.Value {
modified = true
break
}
}
if modified {
event.Raise(a, e)
}
return nil
}
func (a *JRD) OnLinkSet(o, n *Link) error {
modified := false
e := &LinkSet{
Rel: n.Rel,
Type: n.Type,
HRef: n.HRef,
Titles: n.Titles,
Properties: n.Properties,
}
if n.Rel != o.Rel {
modified = true
}
if n.Type != o.Type {
modified = true
}
if n.HRef != o.HRef {
modified = true
}
for _, z := range slice.Zip(
slice.Zip(slice.FromMap(n.Titles)),
slice.Zip(slice.FromMap(o.Titles)),
) {
if z.Key != z.Value {
modified = true
break
}
}
for _, z := range slice.Zip(
slice.Zip(slice.FromMap(n.Properties)),
slice.Zip(slice.FromMap(o.Properties)),
) {
if z.Key != z.Value {
modified = true
break
}
}
if modified {
event.Raise(a, e)
}
return nil
}
func (a *JRD) IsDeleted() bool {
return a.deleted
}
func (a *JRD) SetProperty(name string, value *string) {
if a.Properties == nil {
a.Properties = make(map[string]*string)
}
a.Properties[name] = value
}

266
app/webfinger/jrd_test.go Normal file
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package webfinger_test
import (
"context"
"crypto/ed25519"
"encoding/base64"
"encoding/json"
"fmt"
"strings"
"testing"
"time"
jwt "github.com/golang-jwt/jwt/v4"
"github.com/matryer/is"
"go.uber.org/multierr"
"github.com/sour-is/ev"
"github.com/sour-is/ev/app/webfinger"
memstore "github.com/sour-is/ev/pkg/es/driver/mem-store"
"github.com/sour-is/ev/pkg/es/driver/projecter"
"github.com/sour-is/ev/pkg/es/driver/streamer"
"github.com/sour-is/ev/pkg/es/event"
)
func TestParseJRD(t *testing.T) {
// Adapted from spec http://tools.ietf.org/html/rfc6415#appendix-A
blob := `
{
"subject":"http://blog.example.com/article/id/314",
"aliases":[
"http://blog.example.com/cool_new_thing",
"http://blog.example.com/steve/article/7"],
"properties":{
"http://blgx.example.net/ns/version":"1.3",
"http://blgx.example.net/ns/ext":null
},
"links":[
{
"rel":"author",
"type":"text/html",
"href":"http://blog.example.com/author/steve",
"titles":{
"default":"About the Author",
"en-us":"Author Information"
},
"properties":{
"http://example.com/role":"editor"
}
},
{
"rel":"author",
"href":"http://example.com/author/john",
"titles":{
"default":"The other author"
}
},
{
"rel":"copyright"
}
]
}
`
obj, err := webfinger.ParseJRD([]byte(blob))
if err != nil {
t.Fatal(err)
}
if got, want := obj.Subject, "http://blog.example.com/article/id/314"; got != want {
t.Errorf("JRD.Subject is %q, want %q", got, want)
}
if got, want := obj.GetProperty("http://blgx.example.net/ns/version"), "1.3"; got != want {
t.Errorf("obj.GetProperty('http://blgx.example.net/ns/version') returned %q, want %q", got, want)
}
if got, want := obj.GetProperty("http://blgx.example.net/ns/ext"), ""; got != want {
t.Errorf("obj.GetProperty('http://blgx.example.net/ns/ext') returned %q, want %q", got, want)
}
if obj.GetLinkByRel("copyright") == nil {
t.Error("obj.GetLinkByRel('copyright') returned nil, want non-nil value")
}
if got, want := obj.GetLinkByRel("author").Titles["default"], "About the Author"; got != want {
t.Errorf("obj.GetLinkByRel('author').Titles['default'] returned %q, want %q", got, want)
}
if got, want := obj.GetLinkByRel("author").GetProperty("http://example.com/role"), "editor"; got != want {
t.Errorf("obj.GetLinkByRel('author').GetProperty('http://example.com/role') returned %q, want %q", got, want)
}
}
func TestEncodeJRD(t *testing.T) {
s, err := json.Marshal(&webfinger.JRD{
Subject: "test",
Properties: map[string]*string{
"https://sour.is/ns/prop1": nil,
},
})
if err != nil {
t.Fatal(err)
}
if string(s) != `{"subject":"test","properties":{"https://sour.is/ns/prop1":null}}` {
t.Fatal("output does not match")
}
}
// { "properties":{"https://sour.is/ns/pubkey":"kex1d330ama4vnu3vll5dgwjv3k0pcxsccc5k2xy3j8khndggkszsmsq3hl4ru"},"links":[{"rel":"salty:public","type":"application/json+salty","href":"https://ev.sour.is/inbox/01GAEMKXYJ4857JQP1MJGD61Z5","properties":{"pub":"kex1r8zshlvkc787pxvauaq7hd6awa9kmheddxjj9k80qmenyxk6284s50uvpw"}}]}
//!= {"subject":"acct:me@sour.is","properties":{"https://sour.is/ns/pubkey":"kex1d330ama4vnu3vll5dgwjv3k0pcxsccc5k2xy3j8khndggkszsmsq3hl4ru"},"links":[{"rel":"salty:public","type":"application/json+salty","href":"https://ev.sour.is/inbox/01GAEMKXYJ4857JQP1MJGD61Z5","properties":{"pub":"kex1r8zshlvkc787pxvauaq7hd6awa9kmheddxjj9k80qmenyxk6284s50uvpw"}}]}
func TestApplyEvents(t *testing.T) {
is := is.New(t)
events := event.NewEvents(
&webfinger.SubjectSet{
Subject: "acct:me@sour.is",
Properties: map[string]*string{
"https://sour.is/ns/pubkey": ptr("kex1d330ama4vnu3vll5dgwjv3k0pcxsccc5k2xy3j8khndggkszsmsq3hl4ru"),
},
},
&webfinger.LinkSet{
Rel: "salty:public",
Type: "application/json+salty",
},
&webfinger.LinkSet{
Rel: "salty:private",
Type: "application/json+salty",
},
&webfinger.LinkSet{
Rel: "salty:public",
Type: "application/json+salty",
HRef: "https://ev.sour.is/inbox/01GAEMKXYJ4857JQP1MJGD61Z5",
Properties: map[string]*string{
"pub": ptr("kex1r8zshlvkc787pxvauaq7hd6awa9kmheddxjj9k80qmenyxk6284s50uvpw"),
},
},
&webfinger.LinkDeleted{
Rel: "salty:private",
},
)
event.SetStreamID(webfinger.StreamID("acct:me@sour.is"), events...)
jrd := &webfinger.JRD{}
jrd.ApplyEvent(events...)
s, err := json.Marshal(jrd)
if err != nil {
t.Fatal(err)
}
is.Equal(string(s), `{"subject":"acct:me@sour.is","properties":{"https://sour.is/ns/pubkey":"kex1d330ama4vnu3vll5dgwjv3k0pcxsccc5k2xy3j8khndggkszsmsq3hl4ru"},"links":[{"rel":"salty:public","type":"application/json+salty","href":"https://ev.sour.is/inbox/01GAEMKXYJ4857JQP1MJGD61Z5","properties":{"pub":"kex1r8zshlvkc787pxvauaq7hd6awa9kmheddxjj9k80qmenyxk6284s50uvpw"}}]}`)
events = event.NewEvents(
&webfinger.SubjectDeleted{},
)
event.SetStreamID(webfinger.StreamID("acct:me@sour.is"), events...)
jrd.ApplyEvent(events...)
s, err = json.Marshal(jrd)
if err != nil {
t.Fatal(err)
}
t.Log(string(s))
if string(s) != `{}` {
t.Fatal("output does not match")
}
}
func TestCommands(t *testing.T) {
is := is.New(t)
ctx := context.Background()
pub, priv, err := ed25519.GenerateKey(nil)
is.NoErr(err)
// fmt.Println(base64.RawURLEncoding.EncodeToString(key))
token := jwt.NewWithClaims(jwt.SigningMethodEdDSA, jwt.MapClaims{
"sub": "acct:me@sour.is",
"pub": enc(pub),
"aliases": []string{"acct:xuu@sour.is"},
"properties": map[string]*string{
"https://example.com/ns/asdf": nil,
},
"links": []map[string]any{{
"rel": "salty:public",
"type": "application/json+salty",
"href": "https://ev.sour.is",
"titles": map[string]string{"default": "Jon Lundy"},
"properties": map[string]*string{
"pub": ptr("kex140fwaena9t0mrgnjeare5zuknmmvl0vc7agqy5yr938vusxfh9ys34vd2p"),
},
}},
"exp": time.Now().Add(30 * time.Second).Unix(),
})
aToken, err := token.SignedString(priv)
is.NoErr(err)
es, err := ev.Open(ctx, "mem:", streamer.New(ctx), projecter.New(ctx))
is.NoErr(err)
type claims struct {
Subject string `json:"sub"`
PubKey string `json:"pub"`
*webfinger.JRD
jwt.StandardClaims
}
token, err = jwt.ParseWithClaims(
aToken,
&claims{},
func(tok *jwt.Token) (any, error) {
c, ok := tok.Claims.(*claims)
if !ok {
return nil, fmt.Errorf("wrong type of claim")
}
c.JRD.Subject = c.Subject
c.StandardClaims.Subject = c.Subject
pub, err := dec(c.PubKey)
return ed25519.PublicKey(pub), err
},
jwt.WithValidMethods([]string{"EdDSA"}),
jwt.WithJSONNumber(),
)
is.NoErr(err)
c, ok := token.Claims.(*claims)
is.True(ok)
t.Logf("%#v", c)
a, err := ev.Upsert(ctx, es, webfinger.StreamID(c.Subject), func(ctx context.Context, a *webfinger.JRD) error {
a.OnClaims("POST", c.PubKey, c.JRD)
return nil
})
is.NoErr(err)
for _, e := range a.Events(false) {
t.Log(e)
}
}
func ptr[T any](v T) *T {
return &v
}
func enc(b []byte) string {
return base64.RawURLEncoding.EncodeToString(b)
}
func dec(s string) ([]byte, error) {
s = strings.TrimSpace(s)
return base64.RawURLEncoding.DecodeString(s)
}
func TestMain(m *testing.M) {
ctx, stop := context.WithCancel(context.Background())
defer stop()
err := multierr.Combine(
ev.Init(ctx),
event.Init(ctx),
memstore.Init(ctx),
)
if err != nil {
fmt.Println(err)
return
}
m.Run()
}

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@ -1 +1,187 @@
package webfinger
import (
"context"
"crypto/ed25519"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"strings"
"github.com/golang-jwt/jwt/v4"
"github.com/sour-is/ev"
"github.com/sour-is/ev/internal/lg"
"github.com/sour-is/ev/pkg/es/event"
)
type service struct {
es *ev.EventStore
}
func New(ctx context.Context, es *ev.EventStore) (*service, error) {
ctx, span := lg.Span(ctx)
defer span.End()
if err := event.Register(
ctx,
&SubjectSet{},
&SubjectDeleted{},
&LinkSet{},
&LinkDeleted{},
); err != nil {
return nil, err
}
svc := &service{es: es}
return svc, nil
}
func (s *service) RegisterHTTP(mux *http.ServeMux) {}
func (s *service) RegisterWellKnown(mux *http.ServeMux) {
mux.Handle("/webfinger", lg.Htrace(s, "webfinger"))
}
func (s *service) ServeHTTP(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
ctx, span := lg.Span(ctx)
defer span.End()
if r.URL.Path != "/webfinger" {
w.WriteHeader(http.StatusNotFound)
fmt.Fprint(w, http.StatusText(http.StatusNotFound))
return
}
switch r.Method {
case http.MethodPut, http.MethodDelete:
if r.ContentLength > 4096 {
w.WriteHeader(http.StatusRequestEntityTooLarge)
fmt.Fprint(w, http.StatusText(http.StatusRequestEntityTooLarge))
span.AddEvent("request too large")
return
}
body, err := io.ReadAll(io.LimitReader(r.Body, 4096))
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
fmt.Fprint(w, http.StatusText(http.StatusInternalServerError))
span.RecordError(err)
return
}
r.Body.Close()
type claims struct {
Subject string `json:"sub"`
PubKey string `json:"pub"`
*JRD
jwt.StandardClaims
}
token, err := jwt.ParseWithClaims(
string(body),
&claims{},
func(tok *jwt.Token) (any, error) {
c, ok := tok.Claims.(*claims)
if !ok {
return nil, fmt.Errorf("wrong type of claim")
}
c.JRD.Subject = c.Subject
c.StandardClaims.Subject = c.Subject
pub, err := dec(c.PubKey)
return ed25519.PublicKey(pub), err
},
jwt.WithValidMethods([]string{"EdDSA"}),
jwt.WithJSONNumber(),
)
if err != nil {
w.WriteHeader(http.StatusUnprocessableEntity)
fmt.Fprint(w, http.StatusText(http.StatusUnprocessableEntity), ": ", err.Error())
span.RecordError(err)
return
}
c, ok := token.Claims.(*claims)
if !ok {
w.WriteHeader(http.StatusUnprocessableEntity)
fmt.Fprint(w, http.StatusText(http.StatusUnprocessableEntity))
span.AddEvent("not a claim")
return
}
a, err := ev.Upsert(ctx, s.es, StreamID(c.Subject), func(ctx context.Context, a *JRD) error {
a.OnClaims(r.Method, c.PubKey, c.JRD)
return nil
})
if err != nil {
w.WriteHeader(http.StatusUnprocessableEntity)
fmt.Fprint(w, http.StatusText(http.StatusUnprocessableEntity), ": ", err.Error())
span.RecordError(err)
return
}
w.Header().Set("Content-Type", "application/jrd+json")
w.WriteHeader(http.StatusCreated)
j := json.NewEncoder(w)
j.SetIndent("", " ")
err = j.Encode(a)
span.RecordError(err)
case http.MethodGet:
resource := r.URL.Query().Get("resource")
a := &JRD{}
a.SetStreamID(StreamID(resource))
err := s.es.Load(ctx, a)
if err != nil {
span.RecordError(err)
if errors.Is(err, ev.ErrNotFound) {
w.WriteHeader(http.StatusNotFound)
fmt.Fprint(w, http.StatusText(http.StatusNotFound))
return
}
w.WriteHeader(http.StatusInternalServerError)
fmt.Fprint(w, http.StatusText(http.StatusInternalServerError))
return
}
if a.IsDeleted() {
w.WriteHeader(http.StatusGone)
fmt.Fprint(w, http.StatusText(http.StatusGone))
span.AddEvent("is deleted")
return
}
w.Header().Set("Content-Type", "application/jrd+json")
w.WriteHeader(http.StatusOK)
j := json.NewEncoder(w)
j.SetIndent("", " ")
err = j.Encode(a)
span.RecordError(err)
default:
w.Header().Set("Allow", "GET, PUT, DELETE, OPTIONS")
w.WriteHeader(http.StatusMethodNotAllowed)
fmt.Fprint(w, http.StatusText(http.StatusMethodNotAllowed))
span.AddEvent("method not allow: " + r.Method)
}
}
func dec(s string) ([]byte, error) {
s = strings.TrimSpace(s)
return base64.RawURLEncoding.DecodeString(s)
}

32
cmd/ev/app.webfinger.go Normal file
View File

@ -0,0 +1,32 @@
package main
import (
"context"
"fmt"
"github.com/sour-is/ev"
"github.com/sour-is/ev/app/webfinger"
"github.com/sour-is/ev/internal/lg"
"github.com/sour-is/ev/pkg/service"
"github.com/sour-is/ev/pkg/slice"
)
var _ = apps.Register(50, func(ctx context.Context, svc *service.Harness) error {
ctx, span := lg.Span(ctx)
defer span.End()
span.AddEvent("Enable WebFinger")
eventstore, ok := slice.Find[*ev.EventStore](svc.Services...)
if !ok {
return fmt.Errorf("*es.EventStore not found in services")
}
wf, err := webfinger.New(ctx, eventstore)
if err != nil {
span.RecordError(err)
return err
}
svc.Add(wf)
return nil
})

View File

@ -0,0 +1,32 @@
package main
import (
"context"
"fmt"
"github.com/sour-is/ev"
"github.com/sour-is/ev/app/webfinger"
"github.com/sour-is/ev/internal/lg"
"github.com/sour-is/ev/pkg/service"
"github.com/sour-is/ev/pkg/slice"
)
var _ = apps.Register(50, func(ctx context.Context, svc *service.Harness) error {
ctx, span := lg.Span(ctx)
defer span.End()
span.AddEvent("Enable WebFinger")
eventstore, ok := slice.Find[*ev.EventStore](svc.Services...)
if !ok {
return fmt.Errorf("*es.EventStore not found in services")
}
wf, err := webfinger.New(ctx, eventstore)
if err != nil {
span.RecordError(err)
return err
}
svc.Add(wf)
return nil
})

37
cmd/webfinger/main.go Normal file
View File

@ -0,0 +1,37 @@
package main
import (
"context"
"errors"
"log"
"net/http"
"os"
"os/signal"
"github.com/sour-is/ev/internal/lg"
"github.com/sour-is/ev/pkg/service"
)
var apps service.Apps
var appName, version = service.AppName()
func main() {
ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, os.Kill)
go func() {
<-ctx.Done()
defer cancel() // restore interrupt function
}()
svc := &service.Harness{}
ctx, stop := lg.Init(ctx, appName)
svc.OnStop(stop)
svc.Add(lg.NewHTTP(ctx))
svc.Setup(ctx, apps.Apps()...)
// Run application
if err := svc.Run(ctx, appName, version); err != nil && !errors.Is(err, http.ErrServerClosed) {
log.Fatal(err)
}
}

53
cmd/webfinger/svc.es.go Normal file
View File

@ -0,0 +1,53 @@
package main
import (
"context"
"github.com/sour-is/ev"
"github.com/sour-is/ev/internal/lg"
"github.com/sour-is/ev/pkg/env"
"github.com/sour-is/ev/pkg/es"
diskstore "github.com/sour-is/ev/pkg/es/driver/disk-store"
memstore "github.com/sour-is/ev/pkg/es/driver/mem-store"
"github.com/sour-is/ev/pkg/es/driver/projecter"
resolvelinks "github.com/sour-is/ev/pkg/es/driver/resolve-links"
"github.com/sour-is/ev/pkg/es/driver/streamer"
"github.com/sour-is/ev/pkg/es/event"
"github.com/sour-is/ev/pkg/service"
"go.uber.org/multierr"
)
var _ = apps.Register(10, func(ctx context.Context, svc *service.Harness) error {
ctx, span := lg.Span(ctx)
defer span.End()
// setup eventstore
err := multierr.Combine(
ev.Init(ctx),
event.Init(ctx),
diskstore.Init(ctx),
memstore.Init(ctx),
)
if err != nil {
span.RecordError(err)
return err
}
eventstore, err := ev.Open(
ctx,
env.Default("EV_DATA", "mem:"),
resolvelinks.New(),
streamer.New(ctx),
projecter.New(
ctx,
projecter.DefaultProjection,
),
)
if err != nil {
span.RecordError(err)
return err
}
svc.Add(eventstore, &es.EventStore{EventStore: eventstore})
return nil
})

46
cmd/webfinger/svc.http.go Normal file
View File

@ -0,0 +1,46 @@
package main
import (
"context"
"log"
"net/http"
"strings"
"github.com/rs/cors"
"github.com/sour-is/ev/internal/lg"
"github.com/sour-is/ev/pkg/env"
"github.com/sour-is/ev/pkg/mux"
"github.com/sour-is/ev/pkg/service"
"github.com/sour-is/ev/pkg/slice"
)
var _ = apps.Register(20, func(ctx context.Context, svc *service.Harness) error {
s := &http.Server{}
svc.Add(s)
mux := mux.New()
s.Handler = cors.AllowAll().Handler(mux)
// s.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// log.Println(r.URL.Path)
// mux.ServeHTTP(w, r)
// })
s.Addr = env.Default("EV_HTTP", ":8080")
if strings.HasPrefix(s.Addr, ":") {
s.Addr = "[::]" + s.Addr
}
svc.OnStart(func(ctx context.Context) error {
_, span := lg.Span(ctx)
defer span.End()
log.Print("Listen on ", s.Addr)
span.AddEvent("begin listen and serve on " + s.Addr)
mux.Add(slice.FilterType[interface{ RegisterHTTP(*http.ServeMux) }](svc.Services...)...)
return s.ListenAndServe()
})
svc.OnStop(s.Shutdown)
return nil
})

5
ev.go
View File

@ -164,6 +164,9 @@ func (es *EventStore) Load(ctx context.Context, agg event.Aggregate) error {
if err != nil {
return err
}
if len(events) == 0 {
return ErrNotFound
}
Mes_load.Add(ctx, events.Count())
event.Append(agg, events...)
@ -395,7 +398,7 @@ func Upsert[A any, T PA[A]](ctx context.Context, es *EventStore, streamID string
attribute.String("agg.streamID", streamID),
)
if err = es.Load(ctx, agg); err != nil {
if err = es.Load(ctx, agg); err != nil && !errors.Is(err, ErrNotFound) {
return
}

1
go.mod
View File

@ -100,6 +100,7 @@ require (
)
require (
github.com/golang-jwt/jwt/v4 v4.4.3
github.com/keys-pub/keys v0.1.22
github.com/matryer/is v1.4.0
github.com/oklog/ulid/v2 v2.1.0

2
go.sum
View File

@ -153,6 +153,8 @@ github.com/gobwas/ws v1.0.2 h1:CoAavW/wd/kulfZmSIBt6p24n4j7tHgNVCjsfHVNUbo=
github.com/gobwas/ws v1.0.2/go.mod h1:szmBTxLgaFppYjEmNtny/v3w89xOydFnnZMcgRRu/EM=
github.com/godbus/dbus v4.1.0+incompatible/go.mod h1:/YcGZj5zSblfDWMMoOzV4fas9FZnQYTkDnsGvmh2Grw=
github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
github.com/golang-jwt/jwt/v4 v4.4.3 h1:Hxl6lhQFj4AnOX6MLrsCb/+7tCj7DxP7VA+2rDIq5AU=
github.com/golang-jwt/jwt/v4 v4.4.3/go.mod h1:m21LjoU+eqJr34lmDMbreY2eSTRJ1cv77w39/MY0Ch0=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
github.com/golang/glog v1.0.0 h1:nfP3RFugxnNRyKgeWd4oI1nYvXpxrx8ck8ZrcizshdQ=
github.com/golang/glog v1.0.0/go.mod h1:EWib/APOK0SL3dFbYqvxE3UYd8E6s1ouQ7iEp/0LWV4=

View File

@ -34,6 +34,22 @@ func (s Set[T]) Delete(items ...T) Set[T] {
return s
}
func (s Set[T]) Equal(e Set[T]) bool {
for k := range s {
if _, ok := e[k]; !ok{
return false
}
}
for k := range e {
if _, ok := s[k]; !ok {
return false
}
}
return true
}
func (s Set[T]) String() string {
if s == nil {
return "set(<nil>)"

View File

@ -1,5 +1,9 @@
package slice
import (
"github.com/sour-is/ev/pkg/math"
)
// FilterType returns a subset that matches the type.
func FilterType[T any](in ...any) []T {
lis := make([]T, 0, len(in))
@ -11,11 +15,25 @@ func FilterType[T any](in ...any) []T {
return lis
}
func FilterFn[T any](fn func(T) bool, in ...T) []T {
lis := make([]T, 0, len(in))
for _, t := range in {
if fn(t) {
lis = append(lis, t)
}
}
return lis
}
// Find returns the first of type found. or false if not found.
func Find[T any](in ...any) (T, bool) {
return First(FilterType[T](in...)...)
}
func FindFn[T any](fn func(T) bool, in ...T) (T, bool) {
return First(FilterFn(fn, in...)...)
}
// First returns the first element in a slice.
func First[T any](in ...T) (T, bool) {
if len(in) == 0 {
@ -26,10 +44,101 @@ func First[T any](in ...T) (T, bool) {
}
// Map applys func to each element s and returns results as slice.
func Map[T, U any](s []T, f func(T) U) []U {
r := make([]U, len(s))
for i, v := range s {
r[i] = f(v)
func Map[T, U any](f func(T) U) func(...T) []U {
return func(lis ...T) []U {
r := make([]U, len(lis))
for i, v := range lis {
r[i] = f(v)
}
return r
}
return r
}
func Reduce[T, R any](r R, fn func(T, R, int) R) func(...T) R {
return func(lis ...T) R {
for i, t := range lis {
r = fn(t, r, i)
}
return r
}
}
type Pair[K comparable, V any] struct {
Key K
Value V
}
func FromMap[K comparable, V any](m map[K]V) (keys []K, values []V) {
if m == nil {
return nil, nil
}
keys = make([]K, 0, len(m))
values = make([]V, 0, len(m))
for k := range m {
keys = append(keys, k)
}
for _, k := range keys {
values = append(values, m[k])
}
return keys, values
}
func ToMap[K comparable, V any](keys []K, values []V) (m map[K]V) {
m = make(map[K]V, len(keys))
for i := range keys {
if len(values) < i {
break
}
m[keys[i]] = values[i]
}
return m
}
func Zip[K comparable, V any](k []K, v []V) []Pair[K, V] {
lis := make([]Pair[K, V], math.Max(len(k), len(v)))
for i := range lis {
if k != nil && len(k) > i {
lis[i].Key = k[i]
}
if v != nil && len(v) > i {
lis[i].Value = v[i]
}
}
return lis
}
func Align[T any](k []T, v []T, less func(T, T) bool) []Pair[*T, *T] {
lis := make([]Pair[*T, *T], 0, math.Max(len(k), len(v)))
var j int
for i := 0; i < len(k); {
if j >= len(v) || less(k[i], v[j]) {
lis = append(lis, Pair[*T, *T]{&k[i], nil})
i++
continue
}
if less(v[j], k[i]) {
lis = append(lis, Pair[*T, *T]{nil, &v[j]})
j++
continue
}
lis = append(lis, Pair[*T, *T]{&k[i], &v[j]})
i++
j++
}
for ; j < len(v); j++ {
lis = append(lis, Pair[*T, *T]{nil, &v[j]})
}
return lis
}

54
pkg/slice/slice_test.go Normal file
View File

@ -0,0 +1,54 @@
package slice_test
import (
"testing"
"github.com/matryer/is"
"github.com/sour-is/ev/pkg/slice"
)
func TestAlign(t *testing.T) {
type testCase struct {
left, right []string
combined []slice.Pair[*string, *string]
}
tests := []testCase{
{
left: []string{"1", "3", "5"},
right: []string{"2", "3", "4"},
combined: []slice.Pair[*string, *string]{
{ptr("1"), nil},
{nil, ptr("2")},
{ptr("3"), ptr("3")},
{nil, ptr("4")},
{ptr("5"), nil},
},
},
{
left: []string{"2", "3", "4"},
right: []string{"1", "3", "5"},
combined: []slice.Pair[*string, *string]{
{nil, ptr("1")},
{ptr("2"), nil},
{ptr("3"), ptr("3")},
{ptr("4"), nil},
{nil, ptr("5")},
},
},
}
is := is.New(t)
for _, tt := range tests {
combined := slice.Align(tt.left, tt.right, func(l, r string) bool { return l < r })
is.Equal(len(combined), len(tt.combined))
for i := range combined {
is.Equal(combined[i], tt.combined[i])
}
}
}
func ptr[T any](v T) *T { return &v }