/
LoadWorker.java
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/
LoadWorker.java
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/*
* Copyright 2016 The gRPC Authors
*
* 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.benchmarks.driver;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
import io.grpc.InsecureServerCredentials;
import io.grpc.Server;
import io.grpc.Status;
import io.grpc.benchmarks.proto.Control;
import io.grpc.benchmarks.proto.Control.ClientArgs;
import io.grpc.benchmarks.proto.Control.ServerArgs;
import io.grpc.benchmarks.proto.Control.ServerArgs.ArgtypeCase;
import io.grpc.benchmarks.proto.WorkerServiceGrpc;
import io.grpc.netty.NettyServerBuilder;
import io.grpc.stub.StreamObserver;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* A load worker process which a driver can use to create clients and servers. The worker
* implements the contract defined in 'control.proto'.
*/
public class LoadWorker {
private static final Logger log = Logger.getLogger(LoadWorker.class.getName());
private final int serverPort;
private final Server driverServer;
LoadWorker(int driverPort, int serverPort) throws Exception {
this.serverPort = serverPort;
NioEventLoopGroup singleThreadGroup = new NioEventLoopGroup(1,
new ThreadFactoryBuilder()
.setDaemon(true)
.setNameFormat("load-worker-%d")
.build());
this.driverServer = NettyServerBuilder.forPort(driverPort, InsecureServerCredentials.create())
.directExecutor()
.channelType(NioServerSocketChannel.class)
.workerEventLoopGroup(singleThreadGroup)
.bossEventLoopGroup(singleThreadGroup)
.addService(new WorkerServiceImpl())
.build();
}
public void start() throws Exception {
driverServer.start();
}
/**
* Start the load worker process.
*/
public static void main(String[] args) throws Exception {
boolean usage = false;
int serverPort = 0;
int driverPort = 0;
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 ("server_port".equals(key)) {
serverPort = Integer.valueOf(value);
} else if ("driver_port".equals(key)) {
driverPort = Integer.valueOf(value);
} else {
System.err.println("Unknown argument: " + key);
usage = true;
break;
}
}
if (usage || driverPort == 0) {
System.err.println(
"Usage: [ARGS...]"
+ "\n"
+ "\n --driver_port=<port>"
+ "\n Port to expose grpc.testing.WorkerService, used by driver to initiate work."
+ "\n --server_port=<port>"
+ "\n Port to start load servers on, if not specified by the server config"
+ "\n message. Defaults to any available port.");
System.exit(1);
}
LoadWorker loadWorker = new LoadWorker(driverPort, serverPort);
loadWorker.start();
loadWorker.driverServer.awaitTermination();
log.log(Level.INFO, "DriverServer has terminated.");
// Allow enough time for quitWorker to deliver OK status to the driver.
Thread.sleep(3000);
}
/**
* Implement the worker service contract which can launch clients and servers.
*/
private class WorkerServiceImpl extends WorkerServiceGrpc.WorkerServiceImplBase {
private LoadServer workerServer;
private LoadClient workerClient;
@Override
public StreamObserver<ServerArgs> runServer(
final StreamObserver<Control.ServerStatus> responseObserver) {
return new StreamObserver<ServerArgs>() {
@Override
public void onNext(ServerArgs value) {
try {
ArgtypeCase argTypeCase = value.getArgtypeCase();
if (argTypeCase == ServerArgs.ArgtypeCase.SETUP && workerServer == null) {
if (serverPort != 0 && value.getSetup().getPort() == 0) {
Control.ServerArgs.Builder builder = value.toBuilder();
builder.getSetupBuilder().setPort(serverPort);
value = builder.build();
}
workerServer = new LoadServer(value.getSetup());
workerServer.start();
responseObserver.onNext(Control.ServerStatus.newBuilder()
.setPort(workerServer.getPort())
.setCores(workerServer.getCores())
.build());
} else if (argTypeCase == ArgtypeCase.MARK && workerServer != null) {
responseObserver.onNext(Control.ServerStatus.newBuilder()
.setStats(workerServer.getStats())
.build());
} else {
responseObserver.onError(Status.ALREADY_EXISTS
.withDescription("Server already started")
.asRuntimeException());
}
} catch (Throwable t) {
log.log(Level.WARNING, "Error running server", t);
responseObserver.onError(Status.INTERNAL.withCause(t).asException());
// Shutdown server if we can
onCompleted();
}
}
@Override
public void onError(Throwable t) {
Status status = Status.fromThrowable(t);
if (status.getCode() != Status.Code.CANCELLED) {
log.log(Level.WARNING, "Error driving server", t);
}
onCompleted();
}
@Override
public void onCompleted() {
try {
if (workerServer != null) {
workerServer.shutdownNow();
}
} finally {
workerServer = null;
responseObserver.onCompleted();
}
}
};
}
@Override
public StreamObserver<ClientArgs> runClient(
final StreamObserver<Control.ClientStatus> responseObserver) {
return new StreamObserver<ClientArgs>() {
@Override
public void onNext(ClientArgs value) {
try {
ClientArgs.ArgtypeCase argTypeCase = value.getArgtypeCase();
if (argTypeCase == ClientArgs.ArgtypeCase.SETUP && workerClient == null) {
workerClient = new LoadClient(value.getSetup());
workerClient.start();
responseObserver.onNext(Control.ClientStatus.newBuilder().build());
} else if (argTypeCase == ClientArgs.ArgtypeCase.MARK && workerClient != null) {
responseObserver.onNext(Control.ClientStatus.newBuilder()
.setStats(workerClient.getStats())
.build());
} else {
responseObserver.onError(Status.ALREADY_EXISTS
.withDescription("Client already started")
.asRuntimeException());
}
} catch (Throwable t) {
log.log(Level.WARNING, "Error running client", t);
responseObserver.onError(Status.INTERNAL.withCause(t).asException());
// Shutdown the client if we can
onCompleted();
}
}
@Override
public void onError(Throwable t) {
Status status = Status.fromThrowable(t);
if (status.getCode() != Status.Code.CANCELLED) {
log.log(Level.WARNING, "Error driving client", t);
}
onCompleted();
}
@Override
public void onCompleted() {
try {
if (workerClient != null) {
workerClient.shutdownNow();
}
} finally {
workerClient = null;
responseObserver.onCompleted();
}
}
};
}
@Override
public void coreCount(Control.CoreRequest request,
StreamObserver<Control.CoreResponse> responseObserver) {
responseObserver.onNext(
Control.CoreResponse.newBuilder()
.setCores(Runtime.getRuntime().availableProcessors())
.build());
responseObserver.onCompleted();
}
@Override
public void quitWorker(Control.Void request,
StreamObserver<Control.Void> responseObserver) {
try {
log.log(Level.INFO, "Received quitWorker request.");
responseObserver.onNext(Control.Void.getDefaultInstance());
responseObserver.onCompleted();
driverServer.shutdown();
} catch (Throwable t) {
log.log(Level.WARNING, "Error during shutdown", t);
}
}
}
}