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java-grpc

README.md

Java gRPC Sample

Example gRPC server implemented in Java

Deploying the Java app

Pre-requisite for Java app

Please follow the install setup for Java first before deploying this java app.

Deploy the app using the manifest file

Deploy the app

export DOMAIN=my.cf.app.domain
cf push -f app-manifest.yml --var domain=$DOMAIN

Deploy the app without the manifest file

cf push --no-route java-grpc-test --buildpack java_buildpack --path ./app/build/distributions/app.zip
# my.cf.app.domain is used as an example for demonstration purpose
cf map-route java-grpc-test my.cf.app.domain --hostname java-grpc-test --app-protocol http2

Testing the Java app

grpcurl needs to be installed separately.

grpcurl -proto app/src/main/proto/example.proto java-grpc-test.my.cf.app.domain:443 example.Example.Run

Building and running on the local machine

  1. ./gradlew build
  2. PORT=8080 ./gradlew run
  3. grpcurl -proto app/src/main/proto/example.proto -plaintext localhost:8080 example.Example.Run

This example uses Gradle Wrapper, which will download and use the appropriate Gradle version to build the project.

A Java installation, e.g. openjdk, is required for this sample.