Spring Cloud Streams Source Sample
In this sample for Spring Cloud Streams we will post a timestamp to the stream on an interval determined by the fixedDelay configuration.
Requirements
In order for the sample to run you will need to have installed:
- Java 7 or Above
Code Tour
This sample is a Spring Boot application that uses Spring Cloud Streams to send time stamp data to a stream. The source module has 3 primary components
- SourceApplication - in which is 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, expressed in TimeUnits (seconds by default) * initialDelay - an initial delay when using a fixed delay trigger, expressed in TimeUnits (seconds by default) * 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 simply by executing:
source>$ mvn clean package
Running the Sample
This example requires a local instance of Redis to be up an running. To start the source module execute the following:
source>$ java -jar target/spring-cloud-streams-sample-source-1.0.0.BUILD-SNAPSHOT-exec.jar