snapshot of https://github.com/ThreeDotsLabs/watermill.git (master, 2026-09-15; blobs > 131072B omitted)

_examples/real-world-examples/sending-webhooks/producer/main.go

@@ -0,0 +1,52 @@
+package main
+
+import (
+	"fmt"
+	"math/rand"
+	"time"
+
+	"github.com/ThreeDotsLabs/watermill"
+	"github.com/ThreeDotsLabs/watermill-kafka/v3/pkg/kafka"
+	"github.com/ThreeDotsLabs/watermill/message"
+)
+
+var (
+	brokers = []string{"kafka:9092"}
+	logger  = watermill.NewStdLogger(false, false)
+)
+
+type eventType string
+
+const (
+	Foo eventType = "Foo"
+	Bar eventType = "Bar"
+	Baz eventType = "Baz"
+)
+
+func main() {
+	pub, err := kafka.NewPublisher(
+		kafka.PublisherConfig{
+			Brokers:   brokers,
+			Marshaler: kafka.DefaultMarshaler{},
+		},
+		logger,
+	)
+	if err != nil {
+		panic(err)
+	}
+
+	eventTypes := []eventType{Foo, Bar, Baz}
+
+	for {
+		eventType := eventTypes[rand.Intn(3)]
+		msg := message.NewMessage(watermill.NewUUID(), []byte("message"))
+		msg.Metadata.Set("event_type", string(eventType))
+
+		fmt.Printf("%s Publishing %s\n\n", time.Now().String(), eventType)
+		if err := pub.Publish("kafka_to_http_example", msg); err != nil {
+			panic(err)
+		}
+		time.Sleep(time.Second)
+	}
+
+}