this repo has no description
feat: add bsky-users
+194
-1
+170
cmd/bsky-users/main.go
+170
cmd/bsky-users/main.go
···
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package main
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import (
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"context"
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"database/sql"
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_ "embed"
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"encoding/json"
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"log"
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"os/signal"
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"syscall"
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"time"
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jetstream "github.com/bluesky-social/jetstream/pkg/models"
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"github.com/gorilla/websocket"
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_ "github.com/mattn/go-sqlite3"
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)
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type CheckpointResults struct {
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Blocked int
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Pages int
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Transferred int
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}
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var AppBskyAllowlist = map[string]bool{
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"app.bsky.actor.profile": true,
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"app.bsky.feed.generator": true,
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"app.bsky.feed.like": true,
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"app.bsky.feed.post": true,
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"app.bsky.feed.postgate": true,
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"app.bsky.feed.repost": true,
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"app.bsky.feed.threadgate": true,
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"app.bsky.graph.block": true,
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"app.bsky.graph.follow": true,
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"app.bsky.graph.list": true,
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"app.bsky.graph.listblock": true,
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"app.bsky.graph.listitem": true,
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"app.bsky.graph.starterpack": true,
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"app.bsky.labeler.service": true,
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"chat.bsky.actor.declaration": true,
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}
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// const JetstreamUrl = `wss://jetstream1.us-west.bsky.network/subscribe`
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const JetstreamUrl = `ws://localhost:6008/subscribe` // TODO(ejd): attach a reconnect cursor
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const userTimestampUpdate = `insert into users (did, ts) values (?, ?) on conflict (did) do update set ts = ?`
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//go:embed schema.sql
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var ddl string
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func handler(ctx context.Context, events <-chan []byte, dbCnx *sql.DB) {
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if _, err := dbCnx.ExecContext(ctx, ddl); err != nil {
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log.Printf("could not create tables: %v\n", err)
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}
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if _, err := dbCnx.ExecContext(ctx, "PRAGMA wal_autocheckpoint = 0"); err != nil {
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log.Printf("could not set PRAGMA wal_autocheckpoint: %v\n", err)
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}
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var (
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dbTx *sql.Tx
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err error
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eventCount int
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)
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for evt := range events {
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if dbTx == nil {
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dbTx, err = dbCnx.BeginTx(ctx, nil)
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if err != nil {
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log.Printf("failed to begin transaction: %v\n", err)
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}
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}
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var event jetstream.Event
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if err := json.Unmarshal(evt, &event); err != nil {
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continue
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}
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if event.Kind != jetstream.EventKindCommit {
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continue
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}
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if event.Commit.Operation != jetstream.CommitOperationCreate {
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// we're missing deletes and updates but this matches how bsky-activity
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// does it so we stay consistent
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continue
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}
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did := event.Did
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commit := *event.Commit
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ts := time.Now().UTC().Unix()
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if _, ok := AppBskyAllowlist[commit.Collection]; !ok {
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continue
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}
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dbTx.ExecContext(ctx, userTimestampUpdate, did, ts, ts)
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eventCount += 1
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if eventCount%1000 == 0 {
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if err := dbTx.Commit(); err != nil {
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log.Printf("commit failed: %v\n")
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}
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var results CheckpointResults
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err := dbCnx.QueryRowContext(ctx, "PRAGMA wal_checkpoint(RESTART)").Scan(&results.Blocked, &results.Pages, &results.Transferred)
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switch {
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case err != nil:
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log.Printf("failed checkpoint: %v\n", err)
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case results.Blocked == 1:
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log.Printf("checkpoint: blocked\n")
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case results.Pages == results.Transferred:
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log.Printf("checkpoint: %d pages transferred\n", results.Transferred)
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case results.Pages != results.Transferred:
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log.Printf("checkpoint: %d pages, %d transferred\n", results.Pages, results.Transferred)
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}
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dbTx, err = dbCnx.BeginTx(ctx, nil)
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if err != nil {
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log.Printf("failed to begin transaction: %v\n", err)
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}
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}
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}
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}
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func main() {
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ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
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defer stop()
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conn, _, err := websocket.DefaultDialer.Dial(JetstreamUrl, nil)
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if err != nil {
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log.Fatalf("failed to open websocket: %v\n", err)
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}
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defer func() {
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if err := conn.Close(); err != nil {
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log.Printf("failed to close websocket: %v\n", err)
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}
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log.Printf("websocket closed\n")
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}()
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// TODO(ejd): use more readable URL params for this
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dbCnx, err := sql.Open("sqlite3", "data/bsky-users.db?_journal=WAL&_fk=on&_timeout=5000&_sync=1&_txlock=immediate")
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if err != nil {
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log.Fatalf("failed to open database: %v\n", err)
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}
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defer func() {
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if _, err := dbCnx.Exec("PRAGMA wal_checkpoint(TRUNCATE)"); err != nil {
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log.Printf("error doing final WAL checkpoint: %v\n", err)
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}
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if err := dbCnx.Close(); err != nil {
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log.Printf("failed to close db: %v\n", err)
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}
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log.Printf("db closed\n")
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}()
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jetstreamEvents := make(chan []byte)
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go handler(ctx, jetstreamEvents, dbCnx)
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log.Printf("starting up\n")
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go func() {
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for {
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_, message, err := conn.ReadMessage()
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if err != nil {
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stop()
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}
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jetstreamEvents <- message
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}
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}()
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<-ctx.Done()
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log.Printf("shutting down\n")
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}
+3
cmd/bsky-users/schema.sql
+3
cmd/bsky-users/schema.sql
+1
go.mod
+1
go.mod
···
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github.com/bluesky-social/indigo v0.0.0-20240905024844-a4f38639767f
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7
github.com/bluesky-social/jetstream v0.0.0-20241020000921-dcd43344c716
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github.com/gorilla/websocket v1.5.1
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github.com/mattn/go-sqlite3 v1.14.22
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github.com/pemistahl/lingua-go v1.4.0
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github.com/redis/go-redis/v9 v9.3.0
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)
+2
go.sum
+2
go.sum
···
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github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=
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github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
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github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
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github.com/mattn/go-sqlite3 v1.14.22 h1:2gZY6PC6kBnID23Tichd1K+Z0oS6nE/XwU+Vz/5o4kU=
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github.com/mattn/go-sqlite3 v1.14.22/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
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github.com/minio/sha256-simd v1.0.1 h1:6kaan5IFmwTNynnKKpDHe6FWHohJOHhCPchzK49dzMM=
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github.com/minio/sha256-simd v1.0.1/go.mod h1:Pz6AKMiUdngCLpeTL/RJY1M9rUuPMYujV5xJjtbRSN8=
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github.com/mr-tron/base58 v1.2.0 h1:T/HDJBh4ZCPbU39/+c3rRvE0uKBQlU27+QI8LJ4t64o=
+16
service/bsky-users.service
+16
service/bsky-users.service
···
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[Unit]
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Description=bsky users
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After=network.target syslog.target
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[Service]
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Type=simple
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User=eric
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WorkingDirectory=/home/eric/bsky-tools
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ExecStart=/home/eric/bsky-tools/bin/bsky-users
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TimeoutSec=10
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Restart=always
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RestartSec=5
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StandardOutput=journal
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[Install]
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WantedBy=multi-user.target