298 lines
6.4 KiB
Go
298 lines
6.4 KiB
Go
package main
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import (
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"context"
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"feedsystem_video_go/internal/config"
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"feedsystem_video_go/internal/db"
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rediscache "feedsystem_video_go/internal/middleware/redis"
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"feedsystem_video_go/internal/observability"
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"feedsystem_video_go/internal/social"
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"feedsystem_video_go/internal/video"
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"feedsystem_video_go/internal/worker"
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"log"
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"os"
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"os/signal"
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"strconv"
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"syscall"
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"time"
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amqp "github.com/rabbitmq/amqp091-go"
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)
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const (
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socialExchange = "social.events"
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socialQueue = "social.events"
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socialBindingKey = "social.*"
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likeExchange = "like.events"
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likeQueue = "like.events"
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likeBindingKey = "like.*"
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commentExchange = "comment.events"
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commentQueue = "comment.events"
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commentBindingKey = "comment.*"
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popularityExchange = "video.popularity.events"
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popularityQueue = "video.popularity.events"
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popularityBindingKey = "video.popularity.*"
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)
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func main() {
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// 加载配置
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const configPath = "configs/config.yaml"
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log.Printf("Loading config from %s", configPath)
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cfg, usedDefault, err := config.LoadLocalDev(configPath)
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if err != nil {
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log.Fatalf("Failed to load config: %v", err)
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}
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if usedDefault {
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log.Printf("Config File %s not found, using default local config", configPath)
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} else {
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log.Printf("Config loaded from file: %s", configPath)
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}
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// 连接数据库
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sqlDB, err := db.NewDB(cfg.Database)
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if err != nil {
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log.Fatalf("Failed to connect database: %v", err)
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}
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defer db.CloseDB(sqlDB)
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// 连接 Redis（用于流行度更新）
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cache, err := rediscache.NewFromEnv(&cfg.Redis)
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if err != nil {
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log.Printf("Redis config error (popularity worker disabled): %v", err)
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cache = nil
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} else {
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pingCtx, cancel := context.WithTimeout(context.Background(), 300*time.Millisecond)
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defer cancel()
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if err := cache.Ping(pingCtx); err != nil {
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log.Printf("Redis not available (popularity worker disabled): %v", err)
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_ = cache.Close()
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cache = nil
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} else {
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defer cache.Close()
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log.Printf("Redis connected (popularity worker enabled)")
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}
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}
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// 连接 RabbitMQ
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url := "amqp://" + cfg.RabbitMQ.Username + ":" + cfg.RabbitMQ.Password + "@" + cfg.RabbitMQ.Host + ":" + strconv.Itoa(cfg.RabbitMQ.Port) + "/"
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conn, err := amqp.Dial(url)
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if err != nil {
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log.Fatalf("Failed to connect rabbitmq: %v", err)
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}
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defer conn.Close()
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// 创建 RabbitMQ 通道
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ch, err := conn.Channel()
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if err != nil {
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log.Fatalf("Failed to open rabbitmq channel: %v", err)
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}
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defer ch.Close()
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// 声明 Social 交换机和队列
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if err := declareSocialTopology(ch); err != nil {
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log.Fatalf("Failed to declare social topology: %v", err)
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}
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if err := declareLikeTopology(ch); err != nil {
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log.Fatalf("Failed to declare like topology: %v", err)
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}
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if err := declareCommentTopology(ch); err != nil {
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log.Fatalf("Failed to declare comment topology: %v", err)
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}
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if cache != nil {
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if err := declarePopularityTopology(ch); err != nil {
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log.Fatalf("Failed to declare popularity topology: %v", err)
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}
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}
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if err := ch.Qos(50, 0, false); err != nil {
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log.Fatalf("Failed to set qos: %v", err)
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}
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repo := social.NewSocialRepository(sqlDB)
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socialWorker := worker.NewSocialWorker(ch, repo, socialQueue)
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videoRepo := video.NewVideoRepository(sqlDB)
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likeRepo := video.NewLikeRepository(sqlDB)
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commentRepo := video.NewCommentRepository(sqlDB)
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likeWorker := worker.NewLikeWorker(ch, likeRepo, videoRepo, likeQueue)
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commentWorker := worker.NewCommentWorker(ch, commentRepo, videoRepo, commentQueue)
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var popularityWorker *worker.PopularityWorker
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if cache != nil {
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popularityWorker = worker.NewPopularityWorker(ch, cache, popularityQueue)
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}
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ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
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defer stop()
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pprofServer, err := observability.StartPprofServer(
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"Worker",
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cfg.ObservabilityConfig.Pprof.Enabled,
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cfg.ObservabilityConfig.Pprof.WorkerAddr,
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)
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if err != nil {
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log.Printf("Failed to start worker pprof server: %v", err)
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}
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defer func() {
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shutdownCtx, cancel := context.WithTimeout(context.Background(), 3 * time.Second)
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defer cancel()
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if err := observability.Shutdown(shutdownCtx, pprofServer); err != nil {
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log.Printf("Failed to shutdown worker pprof server: %v", err)
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}
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}()
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errCh := make(chan error, 4)
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log.Printf("Worker started, consuming queue=%s", socialQueue)
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go func() { errCh <- socialWorker.Run(ctx) }()
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log.Printf("Worker started, consuming queue=%s", likeQueue)
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go func() { errCh <- likeWorker.Run(ctx) }()
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log.Printf("Worker started, consuming queue=%s", commentQueue)
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go func() { errCh <- commentWorker.Run(ctx) }()
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if popularityWorker != nil {
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log.Printf("Worker started, consuming queue=%s", popularityQueue)
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go func() { errCh <- popularityWorker.Run(ctx) }()
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}
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err = <-errCh
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if err != nil && err != context.Canceled {
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log.Fatalf("Worker stopped: %v", err)
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}
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log.Printf("Worker stopped")
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}
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func declareSocialTopology(ch *amqp.Channel) error {
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if err := ch.ExchangeDeclare(
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socialExchange,
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"topic",
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true,
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false,
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false,
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false,
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nil,
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); err != nil {
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return err
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}
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q, err := ch.QueueDeclare(
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socialQueue,
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true,
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false,
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false,
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false,
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nil,
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)
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if err != nil {
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return err
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}
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if err := ch.QueueBind(
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q.Name,
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socialBindingKey,
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socialExchange,
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false,
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nil,
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); err != nil {
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return err
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}
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return nil
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}
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func declarePopularityTopology(ch *amqp.Channel) error {
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if err := ch.ExchangeDeclare(
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popularityExchange,
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"topic",
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true,
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false,
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false,
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false,
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nil,
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); err != nil {
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return err
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}
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q, err := ch.QueueDeclare(
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popularityQueue,
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true,
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false,
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false,
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false,
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nil,
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)
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if err != nil {
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return err
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}
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return ch.QueueBind(
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q.Name,
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popularityBindingKey,
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popularityExchange,
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false,
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nil,
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)
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}
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func declareLikeTopology(ch *amqp.Channel) error {
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if err := ch.ExchangeDeclare(
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likeExchange,
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"topic",
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true,
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false,
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false,
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false,
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nil,
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); err != nil {
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return err
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}
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q, err := ch.QueueDeclare(
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likeQueue,
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true,
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false,
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false,
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false,
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nil,
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)
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if err != nil {
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return err
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}
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return ch.QueueBind(
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q.Name,
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likeBindingKey,
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likeExchange,
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false,
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nil,
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)
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}
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func declareCommentTopology(ch *amqp.Channel) error {
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if err := ch.ExchangeDeclare(
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commentExchange,
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"topic",
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true,
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false,
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false,
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false,
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nil,
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); err != nil {
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return err
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}
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q, err := ch.QueueDeclare(
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commentQueue,
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true,
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false,
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false,
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false,
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nil,
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)
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if err != nil {
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return err
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}
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return ch.QueueBind(
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q.Name,
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commentBindingKey,
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commentExchange,
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false,
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nil,
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)
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}
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