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beam-example

An example of a Beam pipeline that includes a call to a Google Cloud Functions web service.

Installation

  • Set up your development environment for Beam. See how here.
  • Ensure jq is installed. See details here.
  • Ensure 'Before You Begin' is completed if Option 2 (see next section) is used.
  • Clone the repo.

Note: JDK 17.0.2 was used.

Usage

Option 1 uses the Cloud Functions Framework to run the web service locally.

Option 2 deploys to Cloud Functions.

Option 1

Pre-process step: source src/main/scripts/pre-process.sh

Cloud Functions step: mvn com.google.cloud.functions:function-maven-plugin:0.10.0:run -Drun.functionTarget=WebService

Pipeline step: mvn compile exec:java -Dexec.mainClass=Example -Dexec.args="http://localhost:8080/"

Option 2

Pre-process step: source src/main/scripts/pre-process.sh

Cloud Functions step:

gcloud functions deploy WebService --region europe-west1 --entry-point WebService --ignore-file .gcloudignorefunctions --runtime java11 --trigger-http --allow-unauthenticated

Pipeline step: mvn compile exec:java -Dexec.mainClass=Example -Dexec.args="<Trigger-URL>/" where <Trigger-URL> is the endpoint of the deployed cloud function.

Credits

Exercise by Stephan K.

License

Licensed under the MIT License.