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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.drill.exec.service;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import io.netty.buffer.PooledByteBufAllocatorL;
import io.netty.channel.EventLoopGroup;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import org.apache.drill.common.AutoCloseables;
import org.apache.drill.common.config.DrillConfig;
import org.apache.drill.exec.ExecConstants;
import org.apache.drill.exec.exception.DrillbitStartupException;
import org.apache.drill.exec.memory.BufferAllocator;
import org.apache.drill.exec.metrics.DrillMetrics;
import org.apache.drill.exec.proto.CoordinationProtos.DrillbitEndpoint;
import org.apache.drill.exec.rpc.TransportCheck;
import org.apache.drill.exec.rpc.control.Controller;
import org.apache.drill.exec.rpc.control.ControllerImpl;
import org.apache.drill.exec.rpc.control.WorkEventBus;
import org.apache.drill.exec.rpc.data.DataConnectionCreator;
import org.apache.drill.exec.rpc.user.UserServer;
import org.apache.drill.exec.server.BootStrapContext;
import org.apache.drill.exec.work.WorkManager.WorkerBee;
import org.apache.drill.exec.work.batch.ControlMessageHandler;
import org.apache.drill.exec.work.user.UserWorker;
import com.codahale.metrics.Gauge;
import com.codahale.metrics.MetricRegistry;
import com.google.common.base.Stopwatch;
public class ServiceEngine implements AutoCloseable {
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(ServiceEngine.class);
private final UserServer userServer;
private final Controller controller;
private final DataConnectionCreator dataPool;
private final DrillConfig config;
boolean useIP = false;
private final boolean allowPortHunting;
private final boolean isDistributedMode;
private final BufferAllocator userAllocator;
private final BufferAllocator controlAllocator;
private final BufferAllocator dataAllocator;
public ServiceEngine(ControlMessageHandler controlMessageHandler, UserWorker userWorker, BootStrapContext context,
WorkEventBus workBus, WorkerBee bee, boolean allowPortHunting, boolean isDistributedMode) throws DrillbitStartupException {
userAllocator = newAllocator(context, "rpc:user", "drill.exec.rpc.user.server.memory.reservation",
"drill.exec.rpc.user.server.memory.maximum");
controlAllocator = newAllocator(context, "rpc:bit-control",
"drill.exec.rpc.bit.server.memory.control.reservation", "drill.exec.rpc.bit.server.memory.control.maximum");
dataAllocator = newAllocator(context, "rpc:bit-data",
"drill.exec.rpc.bit.server.memory.data.reservation", "drill.exec.rpc.bit.server.memory.data.maximum");
final EventLoopGroup eventLoopGroup = TransportCheck.createEventLoopGroup(
context.getConfig().getInt(ExecConstants.USER_SERVER_RPC_THREADS), "UserServer-");
this.userServer = new UserServer(
context.getConfig(),
context.getClasspathScan(),
userAllocator,
eventLoopGroup,
userWorker,
context.getExecutor());
this.controller = new ControllerImpl(context, controlMessageHandler, controlAllocator, allowPortHunting);
this.dataPool = new DataConnectionCreator(context, dataAllocator, workBus, bee, allowPortHunting);
this.config = context.getConfig();
this.allowPortHunting = allowPortHunting;
this.isDistributedMode = isDistributedMode;
registerMetrics(context.getMetrics());
}
private void registerMetrics(final MetricRegistry registry) {
final String prefix = PooledByteBufAllocatorL.METRIC_PREFIX + "rpc.";
DrillMetrics.register(prefix + "user.used", new Gauge<Long>() {
@Override
public Long getValue() {
return userAllocator.getAllocatedMemory();
}
});
DrillMetrics.register(prefix + "user.peak", new Gauge<Long>() {
@Override
public Long getValue() {
return userAllocator.getPeakMemoryAllocation();
}
});
DrillMetrics.register(prefix + "bit.control.used", new Gauge<Long>() {
@Override
public Long getValue() {
return controlAllocator.getAllocatedMemory();
}
});
DrillMetrics.register(prefix + "bit.control.peak", new Gauge<Long>() {
@Override
public Long getValue() {
return controlAllocator.getPeakMemoryAllocation();
}
});
DrillMetrics.register(prefix + "bit.data.used", new Gauge<Long>() {
@Override
public Long getValue() {
return dataAllocator.getAllocatedMemory();
}
});
DrillMetrics.register(prefix + "bit.data.peak", new Gauge<Long>() {
@Override
public Long getValue() {
return dataAllocator.getPeakMemoryAllocation();
}
});
}
private static BufferAllocator newAllocator(
BootStrapContext context, String name, String initReservation, String maxAllocation) {
return context.getAllocator().newChildAllocator(
name, context.getConfig().getLong(initReservation), context.getConfig().getLong(maxAllocation));
}
public DrillbitEndpoint start() throws DrillbitStartupException, UnknownHostException{
int userPort = userServer.bind(config.getInt(ExecConstants.INITIAL_USER_PORT), allowPortHunting);
String address = useIP ? InetAddress.getLocalHost().getHostAddress() : InetAddress.getLocalHost().getCanonicalHostName();
checkLoopbackAddress(address);
DrillbitEndpoint partialEndpoint = DrillbitEndpoint.newBuilder()
.setAddress(address)
//.setAddress("localhost")
.setUserPort(userPort)
.build();
partialEndpoint = controller.start(partialEndpoint);
return dataPool.start(partialEndpoint);
}
public DataConnectionCreator getDataConnectionCreator(){
return dataPool;
}
public Controller getController() {
return controller;
}
private void submit(Executor p, final String name, final AutoCloseable c) {
p.execute(new Runnable() {
@Override
public void run() {
Stopwatch watch = Stopwatch.createStarted();
try {
c.close();
} catch (Exception e) {
logger.warn("Failure while closing {}.", name, e);
}
long elapsed = watch.elapsed(MILLISECONDS);
if (elapsed > 500) {
logger.info("closed " + name + " in " + elapsed + " ms");
}
}
});
}
private void checkLoopbackAddress(String address) throws DrillbitStartupException, UnknownHostException {
if (isDistributedMode && InetAddress.getByName(address).isLoopbackAddress()) {
throw new DrillbitStartupException("Drillbit is disallowed to bind to loopback address in distributed mode.");
}
}
@Override
public void close() throws Exception {
// this takes time so close them in parallel
// Ideally though we fix this netty bug: https://github.com/netty/netty/issues/2545
ExecutorService p = Executors.newFixedThreadPool(2);
submit(p, "userServer", userServer);
submit(p, "dataPool", dataPool);
submit(p, "controller", controller);
p.shutdown();
try {
p.awaitTermination(3, TimeUnit.SECONDS);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
AutoCloseables.close(userAllocator, controlAllocator, dataAllocator);
}
}
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