| /* |
| * Copyright 2000-2013 JetBrains s.r.o. |
| * |
| * 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 org.jetbrains.io; |
| |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.util.ActionCallback; |
| import com.intellij.util.SystemProperties; |
| import io.netty.bootstrap.Bootstrap; |
| import io.netty.bootstrap.BootstrapUtil; |
| import io.netty.bootstrap.ServerBootstrap; |
| import io.netty.channel.*; |
| import io.netty.channel.nio.NioEventLoop; |
| import io.netty.channel.nio.NioEventLoopGroup; |
| import io.netty.channel.oio.OioEventLoopGroup; |
| import io.netty.channel.socket.nio.NioServerSocketChannel; |
| import io.netty.channel.socket.nio.NioSocketChannel; |
| import io.netty.channel.socket.oio.OioSocketChannel; |
| import io.netty.handler.codec.http.HttpObjectAggregator; |
| import io.netty.handler.codec.http.HttpServerCodec; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| import org.jetbrains.ide.PooledThreadExecutor; |
| |
| import java.io.IOException; |
| import java.net.BindException; |
| import java.net.InetSocketAddress; |
| import java.net.Socket; |
| import java.util.Random; |
| |
| public final class NettyUtil { |
| public static final int MAX_CONTENT_LENGTH = 100 * 1024 * 1024; |
| |
| public static final int DEFAULT_CONNECT_ATTEMPT_COUNT = 20; |
| public static final int MIN_START_TIME = 100; |
| |
| static { |
| // IDEA-120811 |
| if (SystemProperties.getBooleanProperty("io.netty.random.id", true)) { |
| System.setProperty("io.netty.machineId", "9e43d860"); |
| System.setProperty("io.netty.processId", Integer.toString(new Random().nextInt(65535))); |
| } |
| } |
| |
| public static void log(Throwable throwable, Logger log) { |
| if (isAsWarning(throwable)) { |
| log.warn(throwable); |
| } |
| else { |
| log.error(throwable); |
| } |
| } |
| |
| public static Channel connectClient(Bootstrap bootstrap, InetSocketAddress remoteAddress, ActionCallback asyncResult) { |
| return connect(bootstrap, remoteAddress, asyncResult, DEFAULT_CONNECT_ATTEMPT_COUNT); |
| } |
| |
| @Nullable |
| public static Channel connect(@NotNull Bootstrap bootstrap, @NotNull InetSocketAddress remoteAddress, @NotNull ActionCallback asyncResult, int maxAttemptCount) { |
| try { |
| int attemptCount = 0; |
| |
| if (bootstrap.group() instanceof NioEventLoop) { |
| while (true) { |
| ChannelFuture future = bootstrap.connect(remoteAddress).awaitUninterruptibly(); |
| if (future.isSuccess()) { |
| return future.channel(); |
| } |
| else if (++attemptCount < maxAttemptCount) { |
| //noinspection BusyWait |
| Thread.sleep(attemptCount * MIN_START_TIME); |
| } |
| else { |
| @SuppressWarnings("ThrowableResultOfMethodCallIgnored") |
| Throwable cause = future.cause(); |
| asyncResult.reject("Cannot connect: " + (cause == null ? "unknown error" : cause.getMessage())); |
| return null; |
| } |
| } |
| } |
| |
| Socket socket; |
| while (true) { |
| try { |
| //noinspection SocketOpenedButNotSafelyClosed |
| socket = new Socket(remoteAddress.getAddress(), remoteAddress.getPort()); |
| break; |
| } |
| catch (IOException e) { |
| if (++attemptCount < maxAttemptCount) { |
| //noinspection BusyWait |
| Thread.sleep(attemptCount * MIN_START_TIME); |
| } |
| else { |
| asyncResult.reject("Cannot connect: " + e.getMessage()); |
| return null; |
| } |
| } |
| } |
| |
| OioSocketChannel channel = new OioSocketChannel(socket); |
| BootstrapUtil.initAndRegister(channel, bootstrap).awaitUninterruptibly(); |
| return channel; |
| } |
| catch (Throwable e) { |
| asyncResult.reject("Cannot connect: " + e.getMessage()); |
| return null; |
| } |
| } |
| |
| private static boolean isAsWarning(Throwable throwable) { |
| String message = throwable.getMessage(); |
| if (message == null) { |
| return false; |
| } |
| |
| return (throwable instanceof IOException && message.equals("An existing connection was forcibly closed by the remote host")) || |
| (throwable instanceof ChannelException && message.startsWith("Failed to bind to: ")) || |
| throwable instanceof BindException || |
| (message.startsWith("Connection reset") || message.equals("Operation timed out") || message.equals("Connection timed out")); |
| } |
| |
| // applicable only in case of ClientBootstrap&OioClientSocketChannelFactory |
| public static void closeAndReleaseFactory(@NotNull Channel channel) { |
| EventLoop channelFactory = channel.eventLoop(); |
| try { |
| channel.close().awaitUninterruptibly(); |
| } |
| finally { |
| // in our case it does nothing, we don't use ExecutorService, but we are aware of future changes |
| channelFactory.shutdownGracefully(); |
| } |
| } |
| |
| public static ServerBootstrap nioServerBootstrap(@NotNull EventLoopGroup eventLoopGroup) { |
| ServerBootstrap bootstrap = new ServerBootstrap().group(eventLoopGroup).channel(NioServerSocketChannel.class); |
| bootstrap.childOption(ChannelOption.TCP_NODELAY, true).childOption(ChannelOption.SO_KEEPALIVE, true); |
| return bootstrap; |
| } |
| |
| public static Bootstrap oioClientBootstrap() { |
| Bootstrap bootstrap = new Bootstrap().group(new OioEventLoopGroup(1, PooledThreadExecutor.INSTANCE)).channel(OioSocketChannel.class); |
| bootstrap.option(ChannelOption.TCP_NODELAY, true).option(ChannelOption.SO_KEEPALIVE, true); |
| return bootstrap; |
| } |
| |
| @SuppressWarnings("UnusedDeclaration") |
| public static Bootstrap nioClientBootstrap() { |
| return nioClientBootstrap(new NioEventLoopGroup(1, PooledThreadExecutor.INSTANCE)); |
| } |
| |
| public static Bootstrap nioClientBootstrap(@NotNull EventLoopGroup eventLoopGroup) { |
| Bootstrap bootstrap = new Bootstrap().group(eventLoopGroup).channel(NioSocketChannel.class); |
| bootstrap.option(ChannelOption.TCP_NODELAY, true).option(ChannelOption.SO_KEEPALIVE, true); |
| return bootstrap; |
| } |
| |
| public static void addHttpServerCodec(ChannelPipeline pipeline) { |
| pipeline.addLast(new HttpServerCodec(), new HttpObjectAggregator(MAX_CONTENT_LENGTH)); |
| } |
| } |