namtzigla / grpc-spring-boot-starter

Spring Boot starter module for Google RPC

#Spring boot starter for Google RPC.

Features

Auto-configures and run the embedded gRPC server with @GRpcService-enabled beans as part of spring-boot application.

Setup

repositories {  
   jcenter()  
   // maven { url "http://oss.jfrog.org/oss-snapshot-local" } //for snashot builds
   
}
dependencies {
    compile('org.lognet:grpc-spring-boot-starter:0.0.2')
}

Usage

• Start by generating stub and server interface(s) from your .proto file(s).
• Annotate your server interface implementation(s) with @org.lognet.springboot.grpc.GRpcService
• Optionally configure the server port in your application.yml/properties. Default port is 6565

 grpc:
    port : 6565

Show case

In the 'grpc-spring-boot-starter-demo' project you can find fully functional example with integration test. The service definition from .proto file looks like this :

service Greeter {
    rpc SayHello ( HelloRequest) returns (  HelloReply) {}
}

Note the generated io.grpc.examples.GreeterGrpc class with static function bindService.(The generated classes were intentionally committed for demo purposes).

All you need to do is to annotate your service implementation with @org.lognet.springboot.grpc.GRpcService

@GRpcService(grpcServiceOuterClass = GreeterGrpc.class)
    public static class GreeterService implements GreeterGrpc.Greeter{
        @Override
        public void sayHello(GreeterOuterClass.HelloRequest request, StreamObserver<GreeterOuterClass.HelloReply> responseObserver) {
            final GreeterOuterClass.HelloReply.Builder replyBuilder = GreeterOuterClass.HelloReply.newBuilder().setMessage("Hello " + request.getName());
            responseObserver.onNext(replyBuilder.build());
            responseObserver.onCompleted();
        }
    }

On the roadmap

• Customized gRPC server builder with compression/decompression registry, custom Executor service and transport security.
• ServerInterceptor support.

License

Apache 2.0