A fork of the Cocoon PDS but being made more distributed.
allow for a push based event emitter
Signed-off-by: Will Andrews <will7989@hotmail.com>
Will Andrews
(Apr 8, 2026, 8:48 PM +0100)
c9230ee5
79dc9d05
+137
-18
+14
-4
cmd/cocoon/main.go
+14
-4
cmd/cocoon/main.go
···
169
169
},
170
170
telemetry.CLIFlagDebug,
171
171
telemetry.CLIFlagMetricsListenAddress,
172
+
&cli.StringFlag{
173
+
Name: "subscribe-repos-service-url",
174
+
EnvVars: []string{"SUBSCRIBE_REPOS_SERVICE_URL"},
175
+
},
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+
&cli.BoolFlag{
177
+
Name: "push-based-events",
178
+
EnvVars: []string{"PUSH_BASED_EVENTS"},
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+
},
172
180
},
173
181
Commands: []*cli.Command{
174
182
runServe,
···
249
257
SecretKey: cmd.String("s3-secret-key"),
250
258
CDNUrl: cmd.String("s3-cdn-url"),
251
259
},
252
-
SessionSecret: cmd.String("session-secret"),
253
-
SessionCookieKey: cmd.String("session-cookie-key"),
254
-
BlockstoreVariant: server.MustReturnBlockstoreVariant(cmd.String("blockstore-variant")),
255
-
FallbackProxy: cmd.String("fallback-proxy"),
260
+
SessionSecret: cmd.String("session-secret"),
261
+
SessionCookieKey: cmd.String("session-cookie-key"),
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+
BlockstoreVariant: server.MustReturnBlockstoreVariant(cmd.String("blockstore-variant")),
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+
FallbackProxy: cmd.String("fallback-proxy"),
264
+
PushBasedEvents: cmd.Bool("push-based-events"),
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+
SubscribeReposServiceURL: cmd.String("subscribe-repos-service-url"),
256
266
})
257
267
if err != nil {
258
268
fmt.Printf("error creating cocoon: %v", err)
+92
server/event_emmiter.go
+92
server/event_emmiter.go
···
1
+
package server
2
+
3
+
import (
4
+
"bytes"
5
+
"context"
6
+
"net/http"
7
+
"time"
8
+
9
+
"github.com/bluesky-social/indigo/events"
10
+
"github.com/bluesky-social/indigo/lex/util"
11
+
)
12
+
13
+
func (s *Server) emmitEvents(ctx context.Context) error {
14
+
ctx, cancel := context.WithCancel(ctx)
15
+
defer cancel()
16
+
17
+
logger := s.logger.With("component", "event-emmiter")
18
+
ident := "self"
19
+
var since *int64
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+
// TODO: track since
21
+
22
+
evts, evtManCancel, err := s.evtman.Subscribe(ctx, ident, func(evt *events.XRPCStreamEvent) bool {
23
+
return true
24
+
}, since)
25
+
if err != nil {
26
+
return err
27
+
}
28
+
defer evtManCancel()
29
+
30
+
header := events.EventHeader{Op: events.EvtKindMessage}
31
+
for evt := range evts {
32
+
func() {
33
+
if ctx.Err() != nil {
34
+
logger.Error("context error", "err", err)
35
+
return
36
+
}
37
+
38
+
var obj util.CBOR
39
+
switch {
40
+
case evt.Error != nil:
41
+
header.Op = events.EvtKindErrorFrame
42
+
obj = evt.Error
43
+
case evt.RepoCommit != nil:
44
+
header.MsgType = "#commit"
45
+
obj = evt.RepoCommit
46
+
case evt.RepoIdentity != nil:
47
+
header.MsgType = "#identity"
48
+
obj = evt.RepoIdentity
49
+
case evt.RepoAccount != nil:
50
+
header.MsgType = "#account"
51
+
obj = evt.RepoAccount
52
+
case evt.RepoInfo != nil:
53
+
header.MsgType = "#info"
54
+
obj = evt.RepoInfo
55
+
default:
56
+
logger.Warn("unrecognized event kind")
57
+
return
58
+
}
59
+
60
+
buf := new(bytes.Buffer)
61
+
62
+
if err := header.MarshalCBOR(buf); err != nil {
63
+
logger.Error("failed to marshal header to buffer", "err", err)
64
+
return
65
+
}
66
+
67
+
if err := obj.MarshalCBOR(buf); err != nil {
68
+
logger.Error("failed to marshal event to buffer", "err", err)
69
+
return
70
+
}
71
+
72
+
// TODO: use a HTTP client here not the default
73
+
_, err := http.Post(s.config.SubscribeReposServiceURL, "", buf)
74
+
if err != nil {
75
+
logger.Error("posting to web server", "error", err)
76
+
return
77
+
}
78
+
}()
79
+
}
80
+
81
+
// we should tell the relay to request a new crawl at this point if we got disconnected
82
+
// use a new context since the old one might be cancelled at this point
83
+
go func() {
84
+
retryCtx, retryCancel := context.WithTimeout(context.Background(), 10*time.Second)
85
+
defer retryCancel()
86
+
if err := s.requestCrawl(retryCtx); err != nil {
87
+
logger.Error("error requesting crawls", "err", err)
88
+
}
89
+
}()
90
+
91
+
return nil
92
+
}
+31
-14
server/server.go
+31
-14
server/server.go
···
124
124
125
125
BlockstoreVariant BlockstoreVariant
126
126
FallbackProxy string
127
+
128
+
PushBasedEvents bool
129
+
SubscribeReposServiceURL string
127
130
}
128
131
129
132
type config struct {
···
141
144
SessionCookieKey string
142
145
BlockstoreVariant BlockstoreVariant
143
146
FallbackProxy string
147
+
148
+
PushBasedEvents bool
149
+
SubscribeReposServiceURL string
144
150
}
145
151
146
152
type CustomValidator struct {
···
435
441
plcClient: plcClient,
436
442
privateKey: &pkey,
437
443
config: &config{
438
-
LogLevel: args.LogLevel,
439
-
Version: args.Version,
440
-
Did: args.Did,
441
-
Hostname: args.Hostname,
442
-
ContactEmail: args.ContactEmail,
443
-
EnforcePeering: false,
444
-
Relays: args.Relays,
445
-
AdminPassword: args.AdminPassword,
446
-
RequireInvite: args.RequireInvite,
447
-
SmtpName: args.SmtpName,
448
-
SmtpEmail: args.SmtpEmail,
449
-
SessionCookieKey: args.SessionCookieKey,
450
-
BlockstoreVariant: args.BlockstoreVariant,
451
-
FallbackProxy: args.FallbackProxy,
444
+
LogLevel: args.LogLevel,
445
+
Version: args.Version,
446
+
Did: args.Did,
447
+
Hostname: args.Hostname,
448
+
ContactEmail: args.ContactEmail,
449
+
EnforcePeering: false,
450
+
Relays: args.Relays,
451
+
AdminPassword: args.AdminPassword,
452
+
RequireInvite: args.RequireInvite,
453
+
SmtpName: args.SmtpName,
454
+
SmtpEmail: args.SmtpEmail,
455
+
SessionCookieKey: args.SessionCookieKey,
456
+
BlockstoreVariant: args.BlockstoreVariant,
457
+
FallbackProxy: args.FallbackProxy,
458
+
PushBasedEvents: args.PushBasedEvents,
459
+
SubscribeReposServiceURL: args.SubscribeReposServiceURL,
452
460
},
453
461
evtman: events.NewEventManager(evtPersister),
454
462
passport: identity.NewPassport(h, identity.NewMemCache(10_000)),
···
634
642
logger.Error("error requesting crawls", "err", err)
635
643
}
636
644
}()
645
+
646
+
if s.config.PushBasedEvents {
647
+
slog.Info("pushed based events enabled")
648
+
go func() {
649
+
if err := s.emmitEvents(ctx); err != nil {
650
+
logger.Error("error emitting events", "err", err)
651
+
}
652
+
}()
653
+
}
637
654
638
655
<-ctx.Done()
639
656