== StreamBridge API with Avro encoding
This sample demonstrates using the StreamBridge API with Avro encoding.
It consists of the following components:
* Supplier function that generates a `Sensor` which is an Avro object
* Consumer function that receives the sensor and forwards to a destination using the `StreamBridge` API
* Another Consumer function that receives the sensor from the destination where `StreamBridge` sent it in previous step
See link:src/main/java/com/example/stream/bridge/avro/StreamBridgeAvroApplication.java[StreamBridgeAvroApplication] for more details.
NOTE: All components in this sample are configured to use native encoding with the Confluent provided Avro serializers. See link:src/main/resources/application.yml[application.yml] for configuration details
[[build-app]]
=== Building the app
To build the app simply execute the following command:
[source,bash]
----
./mvnw clean install
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NOTE: The apps can be built and run from w/in an IDE (such as IntelliJ) but you will need to invoke the Maven `package` goal and then `refresh` the project as the Avro Maven plugin needs to execute so that it generates the required model classes - otherwise you will see compile failures around missing `Sensor` class.
[[run-app]]
=== Running the app
==== Ensure these pre-requisites
****
* The app has been built by following the <<build-app>> steps
* Apache Kafka broker available at `localhost:9092`
* Confluent Schema Registry available at `localhost:8081`
TIP: The included link:../../../tools/kafka/docker-compose/README.adoc#_all_the_things[Kafka tools] can be used to easily start a broker and schema registry locally on the required coordinates
****
==== Start the app
[source,bash]
----
java -jar target/stream-bridge-avro-4.0.0-SNAPSHOT.jar
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===== View consumer output
The supplier generates a new Sensor every 10 seconds which the consumer should log - looking similar to the following:
[source,bash,options=nowrap,subs=attributes]
----
Received Sensor: {"id": "adff755e-cf57-4ac5-b87f-8d3cfafb0019-v1", "temperature": 32.038853, "acceleration": 7.5411835, "velocity": 44.620956}
Received Sensor: {"id": "b508a938-e577-4029-a275-815647068582-v1", "temperature": 40.967136, "acceleration": 8.228367, "velocity": 53.80139}
Received Sensor: {"id": "02320ee6-8866-4fa3-ac9d-6d59f9a5dc92-v1", "temperature": 46.077457, "acceleration": 1.0671729, "velocity": 79.42661}
----
