feat: 重构事件处理，添加默认通道和发布逻辑，移除不必要的提供者

pkg/ast/provider/provider.go.tpl

@@ -35,7 +35,7 @@ func Provide(opts ...opt.Option) error {
 		{{- end }}
 
 		{{- if eq .Mode "event"}}
-		__event.Handle("handler:{{.StructName}}", obj.Topic(), obj.PublishToTopic(), obj.Handler)
+		__event.Handle("handler:{{.StructName}}", obj)
 		{{- end }}
 
 		{{- if eq .Mode "job"}}

templates/events/publisher.go.tpl

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 
 	"{{.ModuleName}}/app/events"
+	"{{.ModuleName}}/providers/event"
 
 	"go.ipao.vip/atom/contracts"
 )
@@ -11,6 +12,8 @@ import (
 var _ contracts.EventPublisher = (*{{.Name}}Event)(nil)
 
 type {{.Name}}Event struct {
+	event.DefaultChannel
+
 	ID int64 `json:"id"`
 }
 

templates/events/subscriber.go.tpl

@@ -5,6 +5,7 @@ import (
 
 	"{{.ModuleName}}/app/events"
 	"{{.ModuleName}}/app/events/publishers"
+	"{{.ModuleName}}/providers/event"
 
 	"go.ipao.vip/atom/contracts"
 	"github.com/ThreeDotsLabs/watermill/message"
@@ -15,6 +16,9 @@ var _ contracts.EventHandler = (*{{.Name}}Subscriber)(nil)
 
 // @provider(event)
 type {{.Name}}Subscriber struct {
+	event.DefaultChannel
+	event.DefaultPublishTo
+
 	log *logrus.Entry `inject:"false"`
 }
 
@@ -23,11 +27,6 @@ func (e *{{.Name}}Subscriber) Prepare() error {
 	return nil
 }
 
-// PublishToTopic implements contracts.EventHandler.
-func (e *{{.Name}}Subscriber) PublishToTopic() string {
-	return events.TopicProcessed
-}
-
 // Topic implements contracts.EventHandler.
 func (e *{{.Name}}Subscriber) Topic() string {
 	return events.Topic{{.Name}}

templates/project/app/events/publishers/user_register.go.tpl

@@ -3,13 +3,17 @@ package publishers
 import (
 	"encoding/json"
 
-	"go.ipao.vip/atom/contracts"
 	"{{.ModuleName}}/app/events"
+	"{{.ModuleName}}/providers/event"
+
+	"go.ipao.vip/atom/contracts"
 )
 
 var _ contracts.EventPublisher = (*UserRegister)(nil)
 
 type UserRegister struct {
+	event.DefaultChannel
+
 	ID int64 `json:"id"`
 }
 

templates/project/app/events/subscribers/user_register.go.tpl

@@ -3,18 +3,22 @@ package subscribers
 import (
 	"encoding/json"
 
-	"go.ipao.vip/atom/contracts"
 	"{{.ModuleName}}/app/events"
 	"{{.ModuleName}}/app/events/publishers"
+	"{{.ModuleName}}/providers/event"
 
 	"github.com/ThreeDotsLabs/watermill/message"
 	"github.com/sirupsen/logrus"
+	"go.ipao.vip/atom/contracts"
 )
 
 var _ contracts.EventHandler = (*UserRegister)(nil)
 
 // @provider(event)
 type UserRegister struct {
+	event.DefaultChannel
+	event.DefaultPublishTo
+
 	log *logrus.Entry `inject:"false"`
 }
 
@@ -23,11 +27,6 @@ func (e *UserRegister) Prepare() error {
 	return nil
 }
 
-// PublishToTopic implements contracts.EventHandler.
-func (e *UserRegister) PublishToTopic() string {
-	return events.TopicProcessed
-}
-
 // Topic implements contracts.EventHandler.
 func (e *UserRegister) Topic() string {
 	return events.TopicUserRegister

templates/project/app/events/subscribers/utils.go.tpl

@@ -0,0 +1,24 @@
+package subscribers
+
+import (
+	"encoding/json"
+
+	"github.com/ThreeDotsLabs/watermill"
+	"github.com/ThreeDotsLabs/watermill/message"
+)
+
+func toMessage(event any) (*message.Message, error) {
+	b, err := json.Marshal(event)
+	if err != nil {
+		return nil, err
+	}
+	return message.NewMessage(watermill.NewUUID(), b), nil
+}
+
+func toMessageList(event any) ([]*message.Message, error) {
+	m, err := toMessage(event)
+	if err != nil {
+		return nil, err
+	}
+	return []*message.Message{m}, nil
+}

templates/project/providers/cmux/config.go.tpl

@@ -2,10 +2,13 @@ package cmux
 
 import (
 	"fmt"
+	"net"
+	"time"
 
 	"{{.ModuleName}}/providers/grpc"
 	"{{.ModuleName}}/providers/http"
 
+	log "github.com/sirupsen/logrus"
 	"github.com/soheilhy/cmux"
 	"go.ipao.vip/atom/container"
 	"go.ipao.vip/atom/opt"
@@ -39,23 +42,68 @@ type CMux struct {
 	Http *http.Service
 	Grpc *grpc.Grpc
 	Mux  cmux.CMux
+	Base net.Listener
 }
 
 func (c *CMux) Serve() error {
-	// grpcL := c.Mux.Match(cmux.HTTP2HeaderField("content-type", "application/grpc"))
-	// httpL := c.Mux.Match(cmux.HTTP1Fast())
-	// httpL := c.Mux.Match(cmux.Any())
+	// Protect against slowloris connections when sniffing protocol
+	// Safe even if SetReadTimeout is a no-op in the cmux version in use
+	c.Mux.SetReadTimeout(1 * time.Second)
+
+	addr := ""
+	if c.Base != nil && c.Base.Addr() != nil {
+		addr = c.Base.Addr().String()
+	}
+	log.WithFields(log.Fields{
+		"addr": addr,
+	}).Info("cmux starting")
+
+	// Route classic HTTP/1.x traffic to the HTTP service
 	httpL := c.Mux.Match(cmux.HTTP1Fast())
-	grpcL := c.Mux.Match(cmux.Any())
+
+	// Route gRPC (HTTP/2 with content-type application/grpc) to the gRPC service.
+	// Additionally, send other HTTP/2 traffic to gRPC since Fiber (HTTP) does not serve HTTP/2.
+	grpcL := c.Mux.Match(
+		cmux.HTTP2HeaderField("content-type", "application/grpc"),
+		cmux.HTTP2(),
+	)
 
 	var eg errgroup.Group
 	eg.Go(func() error {
-		return c.Grpc.ServeWithListener(grpcL)
+		log.WithField("addr", addr).Info("grpc serving via cmux")
+		err := c.Grpc.ServeWithListener(grpcL)
+		if err != nil {
+			log.WithError(err).Error("grpc server exited with error")
+		} else {
+			log.Info("grpc server exited")
+		}
+		return err
 	})
 
 	eg.Go(func() error {
-		return c.Http.Listener(httpL)
+		log.WithField("addr", addr).Info("http serving via cmux")
+		err := c.Http.Listener(httpL)
+		if err != nil {
+			log.WithError(err).Error("http server exited with error")
+		} else {
+			log.Info("http server exited")
+		}
+		return err
 	})
 
-	return c.Mux.Serve()
+	// Run cmux dispatcher; wait for the first error from any goroutine
+	eg.Go(func() error {
+		err := c.Mux.Serve()
+		if err != nil {
+			log.WithError(err).Error("cmux exited with error")
+		} else {
+			log.Info("cmux exited")
+		}
+		return err
+	})
+	err := eg.Wait()
+	if err == nil {
+		log.Info("cmux and sub-servers exited cleanly")
+	}
+	return err
 }

templates/project/providers/cmux/provider.go.tpl

@@ -23,10 +23,15 @@ func Provide(opts ...opt.Option) error {
 			return nil, err
 		}
 
-		return &CMux{
+		mux := &CMux{
 			Http: http,
 			Grpc: grpc,
 			Mux:  cmux.New(l),
-		}, nil
+			Base: l,
+		}
+		// Ensure cmux stops accepting new connections on shutdown
+		container.AddCloseAble(func() { _ = l.Close() })
+
+		return mux, nil
 	}, o.DiOptions()...)
 }

templates/project/providers/event/channel.go.tpl

@@ -0,0 +1,30 @@
+package event
+
+import "go.ipao.vip/atom/contracts"
+
+const (
+	Go    contracts.Channel = "go"
+	Kafka contracts.Channel = "kafka"
+	Redis contracts.Channel = "redis"
+	Sql   contracts.Channel = "sql"
+)
+
+type DefaultPublishTo struct{}
+
+func (d *DefaultPublishTo) PublishTo() (contracts.Channel, string) {
+	return Go, "event:processed"
+}
+
+type DefaultChannel struct{}
+
+func (d *DefaultChannel) Channel() contracts.Channel { return Go }
+
+// kafka
+type KafkaChannel struct{}
+
+func (k *KafkaChannel) Channel() contracts.Channel { return Kafka }
+
+// kafka
+type RedisChannel struct{}
+
+func (k *RedisChannel) Channel() contracts.Channel { return Redis }

templates/project/providers/event/config.go.tpl

@@ -14,7 +14,7 @@ const DefaultPrefix = "Events"
 
 func DefaultProvider() container.ProviderContainer {
 	return container.ProviderContainer{
-		Provider: Provide,
+		Provider: ProvideChannel,
 		Options: []opt.Option{
 			opt.Prefix(DefaultPrefix),
 		},
@@ -22,15 +22,30 @@ func DefaultProvider() container.ProviderContainer {
 }
 
 type Config struct {
-	ConsumerGroup string
+	Sql   *ConfigSql
+	Kafka *ConfigKafka
+	Redis *ConfigRedis
+}
 
+type ConfigSql struct {
+	ConsumerGroup string
+}
+
+type ConfigRedis struct {
+	ConsumerGroup string
+	Streams       []string
+}
+
+type ConfigKafka struct {
+	ConsumerGroup string
 	Brokers       []string
 }
 
 type PubSub struct {
-	Publisher  message.Publisher
-	Subscriber message.Subscriber
 	Router *message.Router
+
+	publishers  map[contracts.Channel]message.Publisher
+	subscribers map[contracts.Channel]message.Subscriber
 }
 
 func (ps *PubSub) Serve(ctx context.Context) error {
@@ -40,15 +55,6 @@ func (ps *PubSub) Serve(ctx context.Context) error {
 	return nil
 }
 
-func (ps *PubSub) Handle(
-	handlerName string,
-	consumerTopic string,
-	publisherTopic string,
-	handler message.HandlerFunc,
-) {
-	ps.Router.AddHandler(handlerName, consumerTopic, ps.Subscriber, publisherTopic, ps.Publisher, handler)
-}
-
 // publish
 func (ps *PubSub) Publish(e contracts.EventPublisher) error {
 	if e == nil {
@@ -61,5 +67,33 @@ func (ps *PubSub) Publish(e contracts.EventPublisher) error {
 	}
 
 	msg := message.NewMessage(watermill.NewUUID(), payload)
-	return ps.Publisher.Publish(e.Topic(), msg)
+	return ps.getPublisher(e.Channel()).Publish(e.Topic(), msg)
+}
+
+// getPublisher returns the publisher for the specified channel.
+func (ps *PubSub) getPublisher(channel contracts.Channel) message.Publisher {
+	if pub, ok := ps.publishers[channel]; ok {
+		return pub
+	}
+	return ps.publishers[Go]
+}
+
+func (ps *PubSub) getSubscriber(channel contracts.Channel) message.Subscriber {
+	if sub, ok := ps.subscribers[channel]; ok {
+		return sub
+	}
+	return ps.subscribers[Go]
+}
+
+func (ps *PubSub) Handle(handlerName string, sub contracts.EventHandler) {
+	publishToCh, publishToTopic := sub.PublishTo()
+
+	ps.Router.AddHandler(
+		handlerName,
+		sub.Topic(),
+		ps.getSubscriber(sub.Channel()),
+		publishToTopic,
+		ps.getPublisher(publishToCh),
+		sub.Handler,
+	)
 }

templates/project/providers/event/provider.go.tpl

@@ -1,14 +1,21 @@
 package event
 
 import (
+	sqlDB "database/sql"
+
 	"go.ipao.vip/atom/container"
+	"go.ipao.vip/atom/contracts"
 	"go.ipao.vip/atom/opt"
 
+	"github.com/ThreeDotsLabs/watermill-kafka/v3/pkg/kafka"
+	"github.com/ThreeDotsLabs/watermill-redisstream/pkg/redisstream"
+	"github.com/ThreeDotsLabs/watermill-sql/v3/pkg/sql"
 	"github.com/ThreeDotsLabs/watermill/message"
 	"github.com/ThreeDotsLabs/watermill/pubsub/gochannel"
+	"github.com/redis/go-redis/v9"
 )
 
-func Provide(opts ...opt.Option) error {
+func ProvideChannel(opts ...opt.Option) error {
 	o := opt.New(opts...)
 	var config Config
 	if err := o.UnmarshalConfig(&config); err != nil {
@@ -18,16 +25,85 @@ func Provide(opts ...opt.Option) error {
 	return container.Container.Provide(func() (*PubSub, error) {
 		logger := LogrusAdapter()
 
+		publishers := make(map[contracts.Channel]message.Publisher)
+		subscribers := make(map[contracts.Channel]message.Subscriber)
+
+		// gochannel
 		client := gochannel.NewGoChannel(gochannel.Config{}, logger)
+		publishers[Go] = client
+		subscribers[Go] = client
+
+		// kafka
+		if config.Kafka != nil {
+			kafkaPublisher, err := kafka.NewPublisher(kafka.PublisherConfig{
+				Brokers:   config.Kafka.Brokers,
+				Marshaler: kafka.DefaultMarshaler{},
+			}, logger)
+			if err != nil {
+				return nil, err
+			}
+			publishers[Kafka] = kafkaPublisher
+
+			kafkaSubscriber, err := kafka.NewSubscriber(kafka.SubscriberConfig{
+				Brokers:       config.Kafka.Brokers,
+				Unmarshaler:   kafka.DefaultMarshaler{},
+				ConsumerGroup: config.Kafka.ConsumerGroup,
+			}, logger)
+			if err != nil {
+				return nil, err
+			}
+			subscribers[Kafka] = kafkaSubscriber
+		}
+
+		// redis
+		if config.Redis != nil {
+			var rdb redis.UniversalClient
+			redisSubscriber, err := redisstream.NewSubscriber(redisstream.SubscriberConfig{
+				Client:        rdb,
+				Unmarshaller:  redisstream.DefaultMarshallerUnmarshaller{},
+				ConsumerGroup: config.Redis.ConsumerGroup,
+			}, logger)
+			if err != nil {
+				return nil, err
+			}
+			subscribers[Redis] = redisSubscriber
+
+			redisPublisher, err := redisstream.NewPublisher(redisstream.PublisherConfig{
+				Client:     rdb,
+				Marshaller: redisstream.DefaultMarshallerUnmarshaller{},
+			}, logger)
+			if err != nil {
+				return nil, err
+			}
+			publishers[Redis] = redisPublisher
+		}
+
+		if config.Sql == nil {
+			var db *sqlDB.DB
+			sqlPublisher, err := sql.NewPublisher(db, sql.PublisherConfig{
+				SchemaAdapter:        sql.DefaultPostgreSQLSchema{},
+				AutoInitializeSchema: false,
+			}, logger)
+			if err != nil {
+				return nil, err
+			}
+			publishers[Sql] = sqlPublisher
+
+			sqlSubscriber, err := sql.NewSubscriber(db, sql.SubscriberConfig{
+				SchemaAdapter: sql.DefaultPostgreSQLSchema{},
+				ConsumerGroup: config.Sql.ConsumerGroup,
+			}, logger)
+			if err != nil {
+				return nil, err
+			}
+			subscribers[Sql] = sqlSubscriber
+		}
+
 		router, err := message.NewRouter(message.RouterConfig{}, logger)
 		if err != nil {
 			return nil, err
 		}
 
-		return &PubSub{
-			Publisher:  client,
-			Subscriber: client,
-			Router:     router,
-		}, nil
+		return &PubSub{Router: router, publishers: publishers, subscribers: subscribers}, nil
 	}, o.DiOptions()...)
 }

templates/project/providers/event/provider_kafka.go.tpl

@@ -1,49 +0,0 @@
-package event
-
-import (
-	"go.ipao.vip/atom/container"
-	"go.ipao.vip/atom/opt"
-
-	"github.com/ThreeDotsLabs/watermill-kafka/v3/pkg/kafka"
-	"github.com/ThreeDotsLabs/watermill/message"
-)
-
-func ProvideKafka(opts ...opt.Option) error {
-	o := opt.New(opts...)
-	var config Config
-	if err := o.UnmarshalConfig(&config); err != nil {
-		return err
-	}
-
-	return container.Container.Provide(func() (*PubSub, error) {
-		logger := LogrusAdapter()
-
-		publisher, err := kafka.NewPublisher(kafka.PublisherConfig{
-			Brokers:   config.Brokers,
-			Marshaler: kafka.DefaultMarshaler{},
-		}, logger)
-		if err != nil {
-			return nil, err
-		}
-
-		subscriber, err := kafka.NewSubscriber(kafka.SubscriberConfig{
-			Brokers:       config.Brokers,
-			Unmarshaler:   kafka.DefaultMarshaler{},
-			ConsumerGroup: config.ConsumerGroup,
-		}, logger)
-		if err != nil {
-			return nil, err
-		}
-
-		router, err := message.NewRouter(message.RouterConfig{}, logger)
-		if err != nil {
-			return nil, err
-		}
-
-		return &PubSub{
-			Publisher:  publisher,
-			Subscriber: subscriber,
-			Router:     router,
-		}, nil
-	}, o.DiOptions()...)
-}

templates/project/providers/event/provider_redis.go.tpl

@@ -1,50 +0,0 @@
-package event
-
-import (
-	"go.ipao.vip/atom/container"
-	"go.ipao.vip/atom/opt"
-
-	"github.com/ThreeDotsLabs/watermill-redisstream/pkg/redisstream"
-	"github.com/ThreeDotsLabs/watermill/message"
-	"github.com/redis/go-redis/v9"
-)
-
-func ProvideRedis(opts ...opt.Option) error {
-	o := opt.New(opts...)
-	var config Config
-	if err := o.UnmarshalConfig(&config); err != nil {
-		return err
-	}
-
-	return container.Container.Provide(func(rdb redis.UniversalClient) (*PubSub, error) {
-		logger := LogrusAdapter()
-
-		subscriber, err := redisstream.NewSubscriber(redisstream.SubscriberConfig{
-			Client:        rdb,
-			Unmarshaller:  redisstream.DefaultMarshallerUnmarshaller{},
-			ConsumerGroup: config.ConsumerGroup,
-		}, logger)
-		if err != nil {
-			return nil, err
-		}
-
-		publisher, err := redisstream.NewPublisher(redisstream.PublisherConfig{
-			Client:     rdb,
-			Marshaller: redisstream.DefaultMarshallerUnmarshaller{},
-		}, logger)
-		if err != nil {
-			return nil, err
-		}
-
-		router, err := message.NewRouter(message.RouterConfig{}, logger)
-		if err != nil {
-			return nil, err
-		}
-
-		return &PubSub{
-			Publisher:  publisher,
-			Subscriber: subscriber,
-			Router:     router,
-		}, nil
-	}, o.DiOptions()...)
-}

templates/project/providers/event/provider_sql.go.tpl

@@ -1,50 +0,0 @@
-package event
-
-import (
-	sqlDB "database/sql"
-
-	"go.ipao.vip/atom/container"
-	"go.ipao.vip/atom/opt"
-
-	"github.com/ThreeDotsLabs/watermill-sql/v3/pkg/sql"
-	"github.com/ThreeDotsLabs/watermill/message"
-)
-
-func ProvideSQL(opts ...opt.Option) error {
-	o := opt.New(opts...)
-	var config Config
-	if err := o.UnmarshalConfig(&config); err != nil {
-		return err
-	}
-
-	return container.Container.Provide(func(db *sqlDB.DB) (*PubSub, error) {
-		logger := LogrusAdapter()
-
-		publisher, err := sql.NewPublisher(db, sql.PublisherConfig{
-			SchemaAdapter:        sql.DefaultPostgreSQLSchema{},
-			AutoInitializeSchema: false,
-		}, logger)
-		if err != nil {
-			return nil, err
-		}
-
-		subscriber, err := sql.NewSubscriber(db, sql.SubscriberConfig{
-			SchemaAdapter: sql.DefaultPostgreSQLSchema{},
-			ConsumerGroup: config.ConsumerGroup,
-		}, logger)
-		if err != nil {
-			return nil, err
-		}
-
-		router, err := message.NewRouter(message.RouterConfig{}, logger)
-		if err != nil {
-			return nil, err
-		}
-
-		return &PubSub{
-			Publisher:  publisher,
-			Subscriber: subscriber,
-			Router:     router,
-		}, nil
-	}, o.DiOptions()...)
-}