Spring Cloud Stream Applications are standalone executable applications that communicate over messaging middleware such as Apache Kafka and RabbitMQ.
These applications can run independently on a variety of runtime platforms, including Kubernetes, Docker, Cloud Foundry, or even on your laptop.
Features
Out-of-the-box applications ready to run as standalone Spring Boot applications.
Assemble a set of applications into a coherent streaming data pipeline in Spring Cloud Data Flow.
Override configuration parameters via application properties, environment variables, or in the YAML file.
Available Applications
Source
Processor
Sink
Time
Splitter
Log
HTTP
Rabbitmq
JDBC
Quick Start
Step 1 - Download the latest time-source application from here [eg: /3.0.0.BUILD-SNAPSHOT/time-source-kafka-3.0.0.BUILD-SNAPSHOT.jar]
Step 2 - Download the latest log-sink application from here [eg: /3.0.0.BUILD-SNAPSHOT/log-sink-kafka-3.0.0.BUILD-SNAPSHOT.jar]
Step 3 - Start Kafka
Step 4 - Start the Time Source producer application pointing to ticktock topic in Kafka
java -jar time-source-kafka-***.jar --spring.cloud.stream.bindings.output.destination=ticktock
Step 5 - Start the Log Sink consumer application pointing to ticktock topic in Kafka
java -jar log-sink-kafka-***.jar --spring.cloud.stream.bindings.input.destination=ticktock
Step 6 - Verify ticktock output in the log-sink logs
Stream Applications and Spring Cloud Data Flow (**)
Artifact Type
Stable Release
Snapshot Release
RabbitMQ + Maven
https://dataflow.spring.io/rabbit-maven-latest
https://dataflow.spring.io/Fahreneheit-BUILD-SNAPSHOT-stream-applications-rabbit-maven
RabbitMQ + Docker
https://dataflow.spring.io/rabbit-docker-latest
https://dataflow.spring.io/Fahrenheit-BUILD-SNAPSHOT-stream-applications-rabbit-docker
Apache Kafka + Maven
https://dataflow.spring.io/kafka-maven-latest
https://dataflow.spring.io/Fahrenheit-BUILD-SNAPSHOT-stream-applications-kafka-maven
Apache Kafka + Docker
https://dataflow.spring.io/kafka-docker-latest
https://dataflow.spring.io/Fahrenheit-BUILD-SNAPSHOT-stream-applications-kafka-docker
(**) find out how to use the app-starters in Spring Cloud Data Flow by reviewing the app-registration section in the reference guide
HTTP Repository Location for Apps
Versions: Boot / Stream
Rabbit MQ
Apache Kafka
Spring Boot 2.3.x / Spring Cloud Stream 3.0.x
Stable Release / Latest Snapshot
Stable Release / Latest Snapshot
Related Projects
Spring Cloud Stream
Spring Cloud Data Flow
Spring Cloud Task
Quick start
Bootstrap your application with Spring Initializr.
