// Package watermillx
// @Author xzx 2023/8/11 18:53:00
package watermillx
import (
"fmt"
"github.com/Shopify/sarama"
"github.com/ThreeDotsLabs/watermill"
"github.com/ThreeDotsLabs/watermill-kafka/v2/pkg/kafka"
"github.com/ThreeDotsLabs/watermill/message"
"github.com/ThreeDotsLabs/watermill/message/router/middleware"
"github.com/ThreeDotsLabs/watermill/message/router/plugin"
"log"
"profile/internal/config"
"profile/internal/schema"
"time"
)
// 测试字段
type WatermillContext struct {
Status int
StageErr error
Event schema.Event
AppID string // API 上报
FetchScenario string // API 上报
}
var logger = watermill.NewStdLogger(false, false)
func (ctx *WatermillContext) Init() {
saramaSubscriberConfig := kafka.DefaultSaramaSubscriberConfig()
// equivalent of auto.offset.reset: earliest
saramaSubscriberConfig.Consumer.Offsets.Initial = sarama.OffsetOldest
subscriber, err := kafka.NewSubscriber(
kafka.SubscriberConfig{
Brokers: []string{config.Profile.GetString("kafka.bootstrap")},
Unmarshaler: kafka.DefaultMarshaler{},
OverwriteSaramaConfig: saramaSubscriberConfig,
ConsumerGroup: "test_consumer_group",
},
logger,
)
if err != nil {
panic(err)
}
router, err := message.NewRouter(message.RouterConfig{}, logger)
if err != nil {
panic(err)
}
// SignalsHandler will gracefully shutdown Router when SIGTERM is received.
// You can also close the router by just calling `r.Close()`.
router.AddPlugin(plugin.SignalsHandler)
// Router level middleware are executed for every message sent to the router
router.AddMiddleware(
// CorrelationID will copy the correlation id from the incoming message's metadata to the produced messages
middleware.CorrelationID,
// The handler function is retried if it returns an error.
// After MaxRetries, the message is Nacked and it's up to the PubSub to resend it.
middleware.Retry{
MaxRetries: 3,
InitialInterval: time.Millisecond * 100,
Logger: logger,
}.Middleware,
// Recoverer handles panics from handlers.
// In this case, it passes them as errors to the Retry middleware.
middleware.Recoverer,
)
// AddHandler returns a handler which can be used to add handler level middleware
// or to stop handler.
// just for debug, we are printing all messages received on `incoming_messages_topic`
router.AddNoPublisherHandler(
"print_incoming_messages",
"to_analyzer__0.PERF_CRASH",
subscriber,
printMessages,
)
// Now that all handlers are registered, we're running the Router.
// Run is blocking while the router is running.
ctx := context.Background()
if err := router.Run(ctx); err != nil {
panic(err)
}
}
func printMessages(msg *message.Message) error {
fmt.Printf(
"\n> Received message: %s\n> %s\n> metadata: %v\n\n",
msg.UUID, string(msg.Payload), msg.Metadata,
)
return nil
}
// Package watermillx
// @Author xzx 2023/8/11 18:53:00
package watermillx
import (
"context"
"fmt"
"github.com/Shopify/sarama"
"github.com/ThreeDotsLabs/watermill"
"github.com/ThreeDotsLabs/watermill-kafka/v2/pkg/kafka"
"github.com/ThreeDotsLabs/watermill/message"
"github.com/ThreeDotsLabs/watermill/message/router/middleware"
"github.com/ThreeDotsLabs/watermill/message/router/plugin"
"log"
"profile/internal/config"
"time"
)
var logger = watermill.NewStdLogger(true, false)
func Init() {
saramaSubscriberConfig := kafka.DefaultSaramaSubscriberConfig()
// equivalent of auto.offset.reset: earliest
saramaSubscriberConfig.Consumer.Offsets.Initial = sarama.OffsetOldest
subscriber, err := kafka.NewSubscriber(
kafka.SubscriberConfig{
Brokers: []string{config.Profile.GetString("kafka.bootstrap")},
Unmarshaler: kafka.DefaultMarshaler{},
OverwriteSaramaConfig: saramaSubscriberConfig,
ConsumerGroup: config.Profile.GetString("kafka.group"),
},
logger,
)
if err != nil {
panic(err)
}
router, err := message.NewRouter(message.RouterConfig{}, logger)
if err != nil {
panic(err)
}
// SignalsHandler will gracefully shutdown Router when SIGTERM is received.
// You can also close the router by just calling `r.Close()`.
router.AddPlugin(plugin.SignalsHandler)
// Router level middleware are executed for every message sent to the router
router.AddMiddleware(
// CorrelationID will copy the correlation id from the incoming message's metadata to the produced messages
middleware.CorrelationID,
// The handler function is retried if it returns an error.
// After MaxRetries, the message is Nacked and it's up to the PubSub to resend it.
middleware.Retry{
MaxRetries: 3,
InitialInterval: time.Millisecond * 100,
Logger: logger,
}.Middleware,
// Recoverer handles panics from handlers.
// In this case, it passes them as errors to the Retry middleware.
middleware.Recoverer,
)
// AddHandler returns a handler which can be used to add handler level middleware
// or to stop handler.
// just for debug, we are printing all messages received on `incoming_messages_topic`
handler := router.AddNoPublisherHandler(
"print_incoming_messages",
"to_analyzer__0.PERF_CRASH",
subscriber,
printMessages,
)
// Handler level middleware is only executed for a specific handler
// Such middleware can be added the same way the router level ones
handler.AddMiddleware(func(h message.HandlerFunc) message.HandlerFunc {
return func(message *message.Message) ([]*message.Message, error) {
log.Println("executing handler specific middleware for ", message.UUID)
return h(message)
}
})
// Now that all handlers are registered, we're running the Router.
// Run is blocking while the router is running.
ctx := context.Background()
if err := router.Run(ctx); err != nil {
panic(err)
}
}
func printMessages(msg *message.Message) error {
fmt.Printf(
"\n> Received message: %s\n> %s\n> metadata: %v\n\n",
msg.UUID, string(msg.Payload), msg.Metadata,
)
return nil
}
