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2017-02-04 17:41:14 +01:00

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Spring Cloud Stream Source Sample

In this Spring Cloud Stream sample, a timestamp is published on an interval determined by the fixedDelay property.

Requirements

To run this sample, you will need to have installed:

  • Java 8 or Above

This example requires Redis to be running on localhost.

Code Tour

This sample is a Spring Boot application that uses Spring Cloud Stream to publish timestamp data. The source module has 3 primary components:

  • SourceApplication - the Spring Boot Main Application

  • TimeSource - the module that will generate the timestamp and post the message to the stream

  • TimeSourceOptionsMetadata - defines the configurations that are available to setup the TimeSource

    • format - how to render the current time, using SimpleDateFormat

    • fixedDelay - time delay between messages

    • initialDelay - delay before the first message

    • timeUnit - the time unit for the fixed and initial delays

    • maxMessages - the maximum messages per poll; -1 for unlimited

Building with Maven

Build the sample by executing:

source>$ mvn clean package

Running the Sample

To start the source module execute the following:

source>$ java -jar target/spring-cloud-stream-sample-source-1.0.0.BUILD-SNAPSHOT-exec.jar