commit 768bae0a19e2a1cfd1a61f8c0c2f4086d464c45c · julien.rbrt.fr/tangled-core

+150
cmd/jstest/main.go
···

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       package main

     

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       import (

     

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       	"context"

     

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       	"flag"

     

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       	"log/slog"

     

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       	"os"

     

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       	"os/signal"

     

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       	"strings"

     

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       	"syscall"

     

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       	"time"

     

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       	"github.com/bluesky-social/jetstream/pkg/client"

     

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       	"github.com/bluesky-social/jetstream/pkg/models"

     

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       	"github.com/sotangled/tangled/jetstream"

     

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       )

     

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       // Simple in-memory implementation of DB interface

     

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       type MemoryDB struct {

     

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       	lastTimeUs int64

     

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       }

     

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       func (m *MemoryDB) GetLastTimeUs() (int64, error) {

     

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       	if m.lastTimeUs == 0 {

     

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       		return time.Now().UnixMicro(), nil

     

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       	}

     

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       	return m.lastTimeUs, nil

     

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       }

     

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       func (m *MemoryDB) SaveLastTimeUs(ts int64) error {

     

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       	m.lastTimeUs = ts

     

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       	return nil

     

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       }

     

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       func (m *MemoryDB) UpdateLastTimeUs(ts int64) error {

     

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       	m.lastTimeUs = ts

     

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       	return nil

     

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       }

     

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       func main() {

     

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       	// Setup logger

     

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       	logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{

     

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       		Level: slog.LevelInfo,

     

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       	}))

     

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       	// Create in-memory DB

     

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       	db := &MemoryDB{}

     

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       	// Get query URL from flag

     

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       	var queryURL string

     

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       	flag.StringVar(&queryURL, "query-url", "", "Jetstream query URL containing DIDs")

     

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       	flag.Parse()

     

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       	if queryURL == "" {

     

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       		logger.Error("No query URL provided, use --query-url flag")

     

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       		os.Exit(1)

     

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       	}

     

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       	// Extract wantedDids parameters

     

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       	didParams := strings.Split(queryURL, "&wantedDids=")

     

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       	dids := make([]string, 0, len(didParams)-1)

     

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       	for i, param := range didParams {

     

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       		if i == 0 {

     

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       			// Skip the first part (the base URL with cursor)

     

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       			continue

     

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       		}

     

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       		dids = append(dids, param)

     

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       	}

     

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       	// Extract collections

     

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       	collections := []string{"sh.tangled.publicKey", "sh.tangled.knot.member"}

     

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       	// Create client configuration

     

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       	cfg := client.DefaultClientConfig()

     

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       	cfg.WebsocketURL = "wss://jetstream2.us-west.bsky.network/subscribe"

     

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       	cfg.WantedCollections = collections

     

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       	// Create jetstream client

     

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       	jsClient, err := jetstream.NewJetstreamClient(

     

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       		cfg.WebsocketURL,

     

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       		"tangled-jetstream",

     

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       		collections,

     

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       		cfg,

     

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       		logger,

     

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       		db,

     

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       		false,

     

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       	)

     

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       	if err != nil {

     

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       		logger.Error("Failed to create jetstream client", "error", err)

     

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       		os.Exit(1)

     

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       	}

     

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       	// Update DIDs

     

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       	jsClient.UpdateDids(dids)

     

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       	// Create a context that will be canceled on SIGINT or SIGTERM

     

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       	ctx, cancel := context.WithCancel(context.Background())

     

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       	defer cancel()

     

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       	// Setup signal handling with a buffered channel

     

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       	sigCh := make(chan os.Signal, 1)

     

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       	signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)

     

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       	// Process function for events

     

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       	processFunc := func(ctx context.Context, event *models.Event) error {

     

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       		// Log the event details

     

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       		logger.Info("Received event",

     

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       			"collection", event.Commit.Collection,

     

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       			"did", event.Did,

     

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       			"rkey", event.Commit.RKey,

     

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       			"action", event.Kind,

     

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       			"time_us", event.TimeUS,

     

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       		)

     

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       		// Save the last time_us

     

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       		if err := db.UpdateLastTimeUs(event.TimeUS); err != nil {

     

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       			logger.Error("Failed to update last time_us", "error", err)

     

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       		}

     

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       		return nil

     

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       	}

     

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       	// Start jetstream

     

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       	if err := jsClient.StartJetstream(ctx, processFunc); err != nil {

     

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       		logger.Error("Failed to start jetstream", "error", err)

     

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       		os.Exit(1)

     

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       	}

     

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       	// Wait for signal instead of context.Done()

     

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       	sig := <-sigCh

     

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       	logger.Info("Received signal, shutting down", "signal", sig)

     

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       	cancel() // Cancel context after receiving signal

     

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       	// Shutdown gracefully with a timeout

     

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       	shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 5*time.Second)

     

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       	defer shutdownCancel()

     

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       	done := make(chan struct{})

     

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       	go func() {

     

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       		jsClient.Shutdown()

     

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       		close(done)

     

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       	}()

     

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       	select {

     

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       	case <-done:

     

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       		logger.Info("Jetstream client shut down gracefully")

     

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       	case <-shutdownCtx.Done():

     

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       		logger.Warn("Shutdown timed out, forcing exit")

     

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       	}

     

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       }