prototube

Prototube

Package prototube implements an API to publish strongly-typed events into Kafka.

Applications can publish events into a specific topic. A topic is always associated with a schema which defines the schema of the event. Events that do not conform with the schemas are rejected.

Internally prototube encodes the events using the following format:

<Magic Number> <Header> <Event>

• Magic Number: 0x50, 0x42, 0x54, 0x42
• Header: Protobuf-encoded structure that contains the metadata of the event (e.g, timestamp / uuid)
• Event: Protobuf-encoded event

How to use

Prerequisite

Please follow this Kafka Quickstart link to install and start Kafka locally.

Quickstart

Build and run the example application to produce random messages to local Kafka.

$ cd examples
$ go run main.go

Compile a proto file

Below command generates the example example.pb.go from example.proto with module main.

$ cd examples
$ protoc --go_out=. idl/example.proto

Use prototube producer

Please see this example for your reference.

Code snippet:

producer, err := prototube.NewWithConfig("testTopic", &prototube.ProducerConfig{
	KafkaBootstrapBrokerList: []string{"localhost:9092"},
})

producer.Emit(&ExamplePrototubeMessage{
	Int32Field:  int32(rand.Intn(10000)),
	Int64Field:  rand.Int63n(int64(10000) + 10000),
	DoubleField: rand.Float64(),
})