io.grpc.testing.integration.TestServiceServer Maven / Gradle / Ivy
/*
* Copyright 2014, gRPC Authors All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.grpc.testing.integration;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.util.concurrent.MoreExecutors;
import io.grpc.Server;
import io.grpc.ServerInterceptors;
import io.grpc.netty.GrpcSslContexts;
import io.grpc.netty.NettyServerBuilder;
import io.grpc.testing.TestUtils;
import io.netty.handler.ssl.SslContext;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
/**
* Server that manages startup/shutdown of a single {@code TestService}.
*/
public class TestServiceServer {
/**
* The main application allowing this server to be launched from the command line.
*/
public static void main(String[] args) throws Exception {
final TestServiceServer server = new TestServiceServer();
server.parseArgs(args);
if (server.useTls) {
System.out.println(
"\nUsing fake CA for TLS certificate. Test clients should expect host\n"
+ "*.test.google.fr and our test CA. For the Java test client binary, use:\n"
+ "--server_host_override=foo.test.google.fr --use_test_ca=true\n");
}
Runtime.getRuntime().addShutdownHook(new Thread() {
@Override
public void run() {
try {
System.out.println("Shutting down");
server.stop();
} catch (Exception e) {
e.printStackTrace();
}
}
});
server.start();
System.out.println("Server started on port " + server.port);
server.blockUntilShutdown();
}
private int port = 8080;
private boolean useTls = true;
private ScheduledExecutorService executor;
private Server server;
@VisibleForTesting
void parseArgs(String[] args) {
boolean usage = false;
for (String arg : args) {
if (!arg.startsWith("--")) {
System.err.println("All arguments must start with '--': " + arg);
usage = true;
break;
}
String[] parts = arg.substring(2).split("=", 2);
String key = parts[0];
if ("help".equals(key)) {
usage = true;
break;
}
if (parts.length != 2) {
System.err.println("All arguments must be of the form --arg=value");
usage = true;
break;
}
String value = parts[1];
if ("port".equals(key)) {
port = Integer.parseInt(value);
} else if ("use_tls".equals(key)) {
useTls = Boolean.parseBoolean(value);
} else if ("grpc_version".equals(key)) {
if (!"2".equals(value)) {
System.err.println("Only grpc version 2 is supported");
usage = true;
break;
}
} else {
System.err.println("Unknown argument: " + key);
usage = true;
break;
}
}
if (usage) {
TestServiceServer s = new TestServiceServer();
System.out.println(
"Usage: [ARGS...]"
+ "\n"
+ "\n --port=PORT Port to connect to. Default " + s.port
+ "\n --use_tls=true|false Whether to use TLS. Default " + s.useTls
);
System.exit(1);
}
}
@VisibleForTesting
void start() throws Exception {
executor = Executors.newSingleThreadScheduledExecutor();
SslContext sslContext = null;
if (useTls) {
sslContext = GrpcSslContexts.forServer(
TestUtils.loadCert("server1.pem"), TestUtils.loadCert("server1.key")).build();
}
server = NettyServerBuilder.forPort(port)
.sslContext(sslContext)
.maxMessageSize(AbstractInteropTest.MAX_MESSAGE_SIZE)
.addService(ServerInterceptors.intercept(
new TestServiceImpl(executor),
TestServiceImpl.interceptors()))
.build().start();
}
@VisibleForTesting
void stop() throws Exception {
server.shutdownNow();
if (!server.awaitTermination(5, TimeUnit.SECONDS)) {
System.err.println("Timed out waiting for server shutdown");
}
MoreExecutors.shutdownAndAwaitTermination(executor, 5, TimeUnit.SECONDS);
}
@VisibleForTesting
int getPort() {
return server.getPort();
}
/**
* Await termination on the main thread since the grpc library uses daemon threads.
*/
private void blockUntilShutdown() throws InterruptedException {
if (server != null) {
server.awaitTermination();
}
}
}