feat: add rejection log sink response handler

README.md

@@ -120,6 +120,8 @@ Check out on [go-dcp](https://github.com/Trendyol/go-dcp#configuration)
 | `kafka.metadataTopics`              | []string          | no       |             | Topic names for the metadata cached by segmentio, define topics here that the connector may produce. In large Kafka clusters, this will reduce memory usage. For more detail please check [docs](https://pkg.go.dev/github.com/segmentio/kafka-go#Transport.MetadataTopics).                     |
 | `kafka.clientID`                    | string            | no       |             | Unique identifier that the transport communicates to the brokers when it sends requests. For more detail please check [docs](https://pkg.go.dev/github.com/segmentio/kafka-go#Transport.ClientID).                                                                                               |
 | `kafka.allowAutoTopicCreation`      | bool              | no       | false       | Create topic if missing. For more detail please check [docs](https://pkg.go.dev/github.com/segmentio/kafka-go#Writer.AllowAutoTopicCreation).                                                                                                                                                    |
+| `kafka.rejectionLog.Topic`          | string            | no       |             | Rejection topic name.                                                                                                                                                                                                                                                                            |
+| `kafka.rejectionLog.IncludeValue`   | boolean           | no       | false       | Includes rejection log source info. `false` is default.                                                                                                                                                                                                                                          |
 
 ### Kafka Metadata Configuration(Use it if you want to store the checkpoint data in Kafka)
 

config/config.go

@@ -36,6 +36,12 @@ type Kafka struct {
 	Compression                 int8              `yaml:"compression"`
 	SecureConnection            bool              `yaml:"secureConnection"`
 	AllowAutoTopicCreation      bool              `yaml:"allowAutoTopicCreation"`
+	RejectionLog                RejectionLog      `yaml:"rejectionLog"`
+}
+
+type RejectionLog struct {
+	Topic        string `yaml:"topic"`
+	IncludeValue bool   `yaml:"includeValue"`
 }
 
 func (k *Kafka) GetBalancer() kafka.Balancer {

connector.go

@@ -68,28 +68,28 @@ func (c *connector) GetDcpClient() dcpCouchbase.Client {
 }
 
 func (c *connector) produce(ctx *models.ListenerContext) {
-	var e couchbase.Event
+	var cbEvent couchbase.Event
 	switch event := ctx.Event.(type) {
 	case models.DcpMutation:
-		e = couchbase.NewMutateEvent(
+		cbEvent = couchbase.NewMutateEvent(
 			event.Key, event.Value,
 			event.CollectionName, event.EventTime, event.Cas, event.VbID, event.SeqNo, event.RevNo,
 		)
 	case models.DcpExpiration:
-		e = couchbase.NewExpireEvent(
+		cbEvent = couchbase.NewExpireEvent(
 			event.Key, nil,
 			event.CollectionName, event.EventTime, event.Cas, event.VbID, event.SeqNo, event.RevNo,
 		)
 	case models.DcpDeletion:
-		e = couchbase.NewDeleteEvent(
+		cbEvent = couchbase.NewDeleteEvent(
 			event.Key, nil,
 			event.CollectionName, event.EventTime, event.Cas, event.VbID, event.SeqNo, event.RevNo,
 		)
 	default:
 		return
 	}
 
-	kafkaMessages := c.mapper(e)
+	kafkaMessages := c.mapper(cbEvent)
 
 	if len(kafkaMessages) == 0 {
 		ctx.Ack()
@@ -99,7 +99,7 @@ func (c *connector) produce(ctx *models.ListenerContext) {
 	messages := make([]sKafka.Message, 0, len(kafkaMessages))
 	for _, message := range kafkaMessages {
 		messages = append(messages, sKafka.Message{
-			Topic:   c.getTopicName(e.CollectionName, message.Topic),
+			Topic:   c.getTopicName(cbEvent.CollectionName, message.Topic),
 			Key:     message.Key,
 			Value:   message.Value,
 			Headers: message.Headers,
@@ -111,10 +111,10 @@ func (c *connector) produce(ctx *models.ListenerContext) {
 		chunks := helpers.ChunkSliceWithSize[sKafka.Message](messages, batchSizeLimit)
 		lastChunkIndex := len(chunks) - 1
 		for idx, chunk := range chunks {
-			c.producer.Produce(ctx, e.EventTime, chunk, idx == lastChunkIndex)
+			c.producer.Produce(ctx, &cbEvent, chunk, idx == lastChunkIndex)
 		}
 	} else {
-		c.producer.Produce(ctx, e.EventTime, messages, true)
+		c.producer.Produce(ctx, &cbEvent, messages, true)
 	}
 }
 

example/simple-rejection-log-sink-response-handler/Dockerfile

@@ -0,0 +1,22 @@
+FROM golang:1.20-alpine as builder
+
+WORKDIR /project
+
+COPY go.mod go.sum ./
+COPY main.go ./
+COPY config.yml ./config.yml
+
+RUN go mod download
+RUN CGO_ENABLED=0 go build -a -o example main.go
+
+FROM alpine:3.17.0
+
+WORKDIR /app
+
+RUN apk --no-cache add ca-certificates
+
+USER nobody
+COPY --from=builder --chown=nobody:nobody /project/example .
+COPY --from=builder --chown=nobody:nobody /project/config.yml ./config.yml
+
+ENTRYPOINT ["./example"]

example/simple-rejection-log-sink-response-handler/config.yml

@@ -0,0 +1,35 @@
+hosts:
+  - localhost:8091
+username: user
+password: password
+bucketName: dcp-test
+scopeName: _default
+collectionNames:
+  - _default
+metadata:
+  type: couchbase
+  config:
+    bucket: checkpoint-bucket-name
+    scope: _default
+    collection: _default
+dcp:
+  group:
+    name: groupName
+    membership:
+      type: static
+kafka:
+  collectionTopicMapping:
+    _default: topicname
+  brokers:
+    - localhost:9092
+  # SSL configurations
+  #
+  # secureConnection: true
+  # Config support env variable "$HOME/example/..."
+  # rootCAPath: "example/stretch-kafka/rootCA.pem"
+  # interCAPath: "example/stretch-kafka/interCA.pem"
+  # scramUsername: "username"
+  # scramPassword: "password"
+  rejectionLog:
+    topic: "rejection-topic"
+    includeValue: true

example/simple-rejection-log-sink-response-handler/go.mod

@@ -0,0 +1,75 @@
+module example
+
+go 1.20
+
+replace github.com/Trendyol/go-dcp-kafka => ./../..
+
+require github.com/Trendyol/go-dcp-kafka v0.0.0
+
+require (
+	github.com/Trendyol/go-dcp v1.2.0-rc.4 // indirect
+	github.com/andybalholm/brotli v1.1.1 // indirect
+	github.com/ansrivas/fiberprometheus/v2 v2.7.0 // indirect
+	github.com/asaskevich/EventBus v0.0.0-20200907212545-49d423059eef // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/couchbase/gocbcore/v10 v10.5.2 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/emicklei/go-restful/v3 v3.11.0 // indirect
+	github.com/go-logr/logr v1.4.1 // indirect
+	github.com/go-openapi/jsonpointer v0.19.6 // indirect
+	github.com/go-openapi/jsonreference v0.20.2 // indirect
+	github.com/go-openapi/swag v0.22.3 // indirect
+	github.com/gofiber/fiber/v2 v2.52.5 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
+	github.com/google/gnostic-models v0.6.8 // indirect
+	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/compress v1.17.11 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-runewidth v0.0.15 // indirect
+	github.com/mhmtszr/concurrent-swiss-map v1.0.8 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/pierrec/lz4/v4 v4.1.15 // indirect
+	github.com/prometheus/client_golang v1.20.5 // indirect
+	github.com/prometheus/client_model v0.6.1 // indirect
+	github.com/prometheus/common v0.58.0 // indirect
+	github.com/prometheus/procfs v0.15.1 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/segmentio/kafka-go v0.4.47 // indirect
+	github.com/sirupsen/logrus v1.9.3 // indirect
+	github.com/valyala/bytebufferpool v1.0.0 // indirect
+	github.com/valyala/fasthttp v1.57.0 // indirect
+	github.com/valyala/tcplisten v1.0.0 // indirect
+	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
+	github.com/xdg-go/scram v1.1.2 // indirect
+	github.com/xdg-go/stringprep v1.0.4 // indirect
+	golang.org/x/net v0.30.0 // indirect
+	golang.org/x/oauth2 v0.22.0 // indirect
+	golang.org/x/sync v0.9.0 // indirect
+	golang.org/x/sys v0.26.0 // indirect
+	golang.org/x/term v0.25.0 // indirect
+	golang.org/x/text v0.19.0 // indirect
+	golang.org/x/time v0.3.0 // indirect
+	google.golang.org/protobuf v1.34.2 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/api v0.29.4 // indirect
+	k8s.io/apimachinery v0.29.4 // indirect
+	k8s.io/client-go v0.29.4 // indirect
+	k8s.io/klog/v2 v2.110.1 // indirect
+	k8s.io/kube-openapi v0.0.0-20231010175941-2dd684a91f00 // indirect
+	k8s.io/utils v0.0.0-20230726121419-3b25d923346b // indirect
+	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect
+	sigs.k8s.io/yaml v1.3.0 // indirect
+)