diff --git a/examples/build.gradle b/examples/build.gradle index ce0743ab3e..3563177097 100644 --- a/examples/build.gradle +++ b/examples/build.gradle @@ -51,11 +51,19 @@ task helloWorldClient(type: CreateStartScripts) { classpath = jar.outputs.files + project.configurations.runtime } +task compressingHelloWorldClient(type: CreateStartScripts) { + mainClassName = "io.grpc.examples.experimental.CompressingHelloWorldClient" + applicationName = "compressing-hello-world-client" + outputDir = new File(project.buildDir, 'tmp') + classpath = jar.outputs.files + project.configurations.runtime +} + applicationDistribution.into("bin") { from(routeGuideServer) from(routeGuideClient) from(helloWorldServer) from(helloWorldClient) + from(compressingHelloWorldClient) fileMode = 0755 } diff --git a/examples/src/main/java/io/grpc/examples/experimental/CompressingHelloWorldClient.java b/examples/src/main/java/io/grpc/examples/experimental/CompressingHelloWorldClient.java new file mode 100644 index 0000000000..230cb57731 --- /dev/null +++ b/examples/src/main/java/io/grpc/examples/experimental/CompressingHelloWorldClient.java @@ -0,0 +1,116 @@ +/* + * Copyright 2015, Google Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +package io.grpc.examples.experimental; + +import io.grpc.CallOptions; +import io.grpc.Channel; +import io.grpc.ClientCall; +import io.grpc.ClientInterceptor; +import io.grpc.Codec; +import io.grpc.ManagedChannel; +import io.grpc.MethodDescriptor; +import io.grpc.examples.helloworld.GreeterGrpc; +import io.grpc.examples.helloworld.HelloRequest; +import io.grpc.examples.helloworld.HelloResponse; +import io.grpc.netty.NegotiationType; +import io.grpc.netty.NettyChannelBuilder; + +import java.util.concurrent.TimeUnit; +import java.util.logging.Level; +import java.util.logging.Logger; + +/** + * A simple client that requests a greeting from the + * {@link io.grpc.examples.helloworld.HelloWorldServer}. + * + *

This class should act a a drop in replacement for + * {@link io.grpc.examples.helloworld.HelloWorldClient}. + */ +public class CompressingHelloWorldClient { + private static final Logger logger = + Logger.getLogger(CompressingHelloWorldClient.class.getName()); + + private final ManagedChannel channel; + private final GreeterGrpc.GreeterBlockingStub blockingStub; + + /** Construct client connecting to HelloWorld server at {@code host:port}. */ + public CompressingHelloWorldClient(String host, int port) { + channel = + NettyChannelBuilder.forAddress(host, port).negotiationType(NegotiationType.PLAINTEXT) + .intercept(new ClientInterceptor() { + @Override + public ClientCall interceptCall( + MethodDescriptor method, CallOptions callOptions, + Channel next) { + return next.newCall(method, callOptions.withCompressor(new Codec.Gzip())); + } + }) + .build(); + blockingStub = GreeterGrpc.newBlockingStub(channel); + } + + public void shutdown() throws InterruptedException { + channel.shutdown().awaitTermination(5, TimeUnit.SECONDS); + } + + /** Say hello to server. */ + public void greet(String name) { + try { + logger.info("Will try to greet " + name + " ..."); + HelloRequest request = HelloRequest.newBuilder().setName(name).build(); + HelloResponse response = blockingStub.sayHello(request); + logger.info("Greeting: " + response.getMessage()); + } catch (RuntimeException e) { + logger.log(Level.WARNING, "RPC failed", e); + return; + } + } + + /** + * Greet server. If provided, the first element of {@code args} is the name to use in the + * greeting. + */ + public static void main(String[] args) throws Exception { + CompressingHelloWorldClient client = new CompressingHelloWorldClient("localhost", 50051); + try { + /* Access a service running on the local machine on port 50051 */ + String user = "world"; + if (args.length > 0) { + user = args[0]; /* Use the arg as the name to greet if provided */ + } + client.greet(user); + } finally { + client.shutdown(); + } + } +} +