commit 4197459f882d77dde9dcd0a3d4d84e668afbfc51 · edavis.dev/bsky-tools

+2 -1

.gitignore

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       db/

     

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       firehose.db*

     

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       bin/

     

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       data/

+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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       }

cmd/bsky-users/schema.sql

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       CREATE TABLE IF NOT EXISTS users (did TEXT, ts TIMESTAMP);

     

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       CREATE UNIQUE INDEX IF NOT EXISTS did_idx on users(did);

     

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       CREATE INDEX IF NOT EXISTS ts_idx on users(ts);

go.mod

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       	github.com/bluesky-social/indigo v0.0.0-20240905024844-a4f38639767f

     

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       	github.com/bluesky-social/jetstream v0.0.0-20241020000921-dcd43344c716

     

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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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       )

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-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/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

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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