GitHub - spring-attic/stream-applications: Functions and Spring Cloud Stream Applications for data driven microservices

Spring Cloud Stream Applications are no longer maintained as an open-source project by Broadcom, Inc.

Spring Cloud Stream Applications 2025.0.1 is the last open-source release and any future releases will only be made available to Tanzu Spring customers. For Tanzu entitled customers, Spring Cloud Stream Applications has recently been patched to 2025.0.2 in the Spring Enterprise artifact repository.

In this repository, you will find a collection of components that can meet various data integration use cases and requirements.

This repository builds on top of the Spring Functions Catalog and generates standalone Spring Cloud Stream applications that can run against Spring Cloud Stream’s RabbitMQ or Apache Kafka binder implementations. It is also possible to extend the generator to bundle the Java functions with the other supported binder implementations.

These applications can run standalone or as part of a data flow, such as the one orchestrated using Spring Cloud Data Flow.

Build

This build requires GraalVM JDK 17 distribution in order to build the script function and processor.

If you are building locally and don’t want to publish to a repository set: export LOCAL=true

Quick Compile

This will compile all jars and publish to local repo.

Boil the Ocean

This will build and test / integration test all the modules.

Boil the Ocean (sans tests)

This will build all the modules (including apps) but skip tests.

Core

This will build the core functionality and all functions.

You can then build the desired apps.

Application

./build-app.sh . applications/sink/log-sink

Note	In order to disable metrics by default there needs to be application properties configured like in `default-application.properties`. The `build-app.sh` script will copy default-application.properties into src/main/resources if no application.properties,yml,yaml or json is present.