Merge pull request #54 from algobot76/allow-auto-topic-creation

feat(kq): allow auto topic creation

kq/pusher.go

@@ -11,15 +11,19 @@ import (
 )
 
 type (
-	PushOption func(options *chunkOptions)
+	PushOption func(options *pushOptions)
 
 	Pusher struct {
 		producer *kafka.Writer
 		topic    string
 		executor *executors.ChunkExecutor
 	}
 
-	chunkOptions struct {
+	pushOptions struct {
+		// kafka.Writer options
+		allowAutoTopicCreation bool
+
+		// executors.ChunkExecutor options
 		chunkSize     int
 		flushInterval time.Duration
 	}
@@ -33,6 +37,24 @@ func NewPusher(addrs []string, topic string, opts ...PushOption) *Pusher {
 		Balancer:    &kafka.LeastBytes{},
 		Compression: kafka.Snappy,
 	}
+
+	var options pushOptions
+	for _, opt := range opts {
+		opt(&options)
+	}
+
+	// apply kafka.Writer options
+	producer.AllowAutoTopicCreation = options.allowAutoTopicCreation
+
+	// apply ChunkExecutor options
+	var chunkOpts []executors.ChunkOption
+	if options.chunkSize > 0 {
+		chunkOpts = append(chunkOpts, executors.WithChunkBytes(options.chunkSize))
+	}
+	if options.flushInterval > 0 {
+		chunkOpts = append(chunkOpts, executors.WithFlushInterval(options.flushInterval))
+	}
+
 	pusher := &Pusher{
 		producer: producer,
 		topic:    topic,
@@ -45,7 +67,7 @@ func NewPusher(addrs []string, topic string, opts ...PushOption) *Pusher {
 		if err := pusher.producer.WriteMessages(context.Background(), chunk...); err != nil {
 			logx.Error(err)
 		}
-	}, newOptions(opts)...)
+	}, chunkOpts...)
 
 	return pusher
 }
@@ -79,30 +101,21 @@ func (p *Pusher) Push(v string) error {
 
 // WithChunkSize customizes the Pusher with the given chunk size.
 func WithChunkSize(chunkSize int) PushOption {
-	return func(options *chunkOptions) {
+	return func(options *pushOptions) {
 		options.chunkSize = chunkSize
 	}
 }
 
 // WithFlushInterval customizes the Pusher with the given flush interval.
 func WithFlushInterval(interval time.Duration) PushOption {
-	return func(options *chunkOptions) {
+	return func(options *pushOptions) {
 		options.flushInterval = interval
 	}
 }
 
-func newOptions(opts []PushOption) []executors.ChunkOption {
-	var options chunkOptions
-	for _, opt := range opts {
-		opt(&options)
-	}
-
-	var chunkOpts []executors.ChunkOption
-	if options.chunkSize > 0 {
-		chunkOpts = append(chunkOpts, executors.WithChunkBytes(options.chunkSize))
-	}
-	if options.flushInterval > 0 {
-		chunkOpts = append(chunkOpts, executors.WithFlushInterval(options.flushInterval))
+// WithAllowAutoTopicCreation allows the Pusher to create the given topic if it does not exist.
+func WithAllowAutoTopicCreation() PushOption {
+	return func(options *pushOptions) {
+		options.allowAutoTopicCreation = true
 	}
-	return chunkOpts
 }