README.md

GEOLabel Lambda

TODO: document

See https://github.com/nuest/aws-lambda-kvp-minimal-java

With handler function

Use own simple handler function, see module /lambda

The file lambda/target/glblambda.jar is a "fat jar" created with maven-shade-plugin that can be deployed as an AWS Lambda function.

The Handler is the function org.n52.geolabel.lambda.Hello::myHandler.

• TODO: HTTP API Gateway not working yet
  • create a route /hello
  • attach integration geolabel-lambda somehow with https://docs.aws.amazon.com/apigateway/latest/developerguide/set-up-lambda-integrations.html (probably "custom" to mirror the GEO Label API) so that https://dlttwho6d0.execute-api.eu-central-1.amazonaws.com/default/hello?name=Tester works

With Jersey

Note: This approach is not feasible, because of version conflicts between old libraries used in the GEO Label service and newer Glassfisch libraries. If the GEO-label-java code was to be updated, this could work. The approach is still part of the codebase.

Files:

• server/pom.xml has a profile for activating the generation of a "fat jar" for deployment on AWS Lambda. Activating the profile requires to update the NOTICE file because other libraries are used
• server/java.org.n52.geolabel.server.lambda.StreamLambdaHandler.java.dev is the draft of an handler implementation to connect AWS Lambda events with the existing Jersey annotations, see https://aws.amazon.com/blogs/opensource/java-apis-aws-lambda/ and https://github.com/awslabs/aws-serverless-java-container/tree/master/samples/jersey/pet-store

mvn notice:generate -P lambda-jar
mvn clean package -P lambda-jar