taegeonum commented on a change in pull request #231: [NEMO-406] Invoke LambdaExecutor without creating containers URL: https://github.com/apache/incubator-nemo/pull/231#discussion_r315082057
########## File path: runtime/master/src/main/java/org/apache/nemo/runtime/master/LambdaMaster.java ########## @@ -0,0 +1,184 @@ +/* + * 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.nemo.runtime.master; + +import com.amazonaws.regions.Regions; +import com.amazonaws.services.lambda.AWSLambda; +import com.amazonaws.services.lambda.AWSLambdaClientBuilder; +import com.amazonaws.services.lambda.model.InvokeRequest; +import com.amazonaws.services.lambda.model.InvokeResult; +import io.netty.bootstrap.ServerBootstrap; +import io.netty.channel.Channel; +import io.netty.channel.ChannelInboundHandlerAdapter; +import io.netty.channel.ChannelOption; +import io.netty.channel.EventLoopGroup; +import io.netty.channel.group.ChannelGroup; +import io.netty.channel.group.DefaultChannelGroup; +import io.netty.channel.nio.NioEventLoopGroup; +import io.netty.channel.socket.nio.NioServerSocketChannel; +import io.netty.util.concurrent.DefaultThreadFactory; +import io.netty.util.concurrent.GlobalEventExecutor; +import org.apache.nemo.runtime.master.resource.LambdaInboundHandler; +import org.apache.nemo.runtime.master.resource.NettyChannelInitializer; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.BufferedReader; +import java.io.IOException; +import java.io.InputStreamReader; +import java.net.*; + +/** + * Invoked by runtime master, with utilities for the LambdaExecutor to communicate + * Set up netty server for LambdaExecutors to connect to. + * Invoke LambdaExecutor with public addr and port. + */ +public class LambdaMaster { + + private static final Logger LOG = LoggerFactory.getLogger(LambdaMaster.class.getName()); + private static final int SERVER_BOSS_NUM_THREADS = 3; + private static final int SERVER_WORKER_NUM_THREADS = 10; + private static final String CLASS_NAME = LambdaMaster.class.getName(); + + private EventLoopGroup serverBossGroup; + private EventLoopGroup serverWorkerGroup; + private Channel acceptor; + // A container object keeping track of all existing channels + private final ChannelGroup serverChannelGroup = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE); + + private int port = 9999; + private String localAddress; + private String publicAddress; + + private final AWSLambda client; + private final String lambdaFunctionName; + + public LambdaMaster() { + this.setNetty(); + + Regions region = Regions.fromName("ap-northeast-1"); + this.client = AWSLambdaClientBuilder.standard().withRegion(region).build(); + this.lambdaFunctionName = "lambda-dev-executor"; + } + + /** + * Invoke LambdaExecutor, which connects to the netty channel. + */ + public void invokeExecutor() { + InvokeRequest request = new InvokeRequest() + .withFunctionName(this.lambdaFunctionName) + .withInvocationType("Event").withLogType("Tail").withClientContext("Lambda Executor") + .withPayload(String.format("{\"address\":\"%s\", \"port\": %d}", + this.publicAddress, this.port)); + + InvokeResult response = client.invoke(request); + } + + private void setNetty() { + LOG.info("##### Set up netty server #####"); + this.serverBossGroup = new NioEventLoopGroup(SERVER_BOSS_NUM_THREADS, + new DefaultThreadFactory(CLASS_NAME + "SourceServerBoss")); + this.serverWorkerGroup = new NioEventLoopGroup(SERVER_WORKER_NUM_THREADS, + new DefaultThreadFactory(CLASS_NAME + "SourceServerWorker")); + + final ServerBootstrap serverBootstrap = new ServerBootstrap(); + ChannelInboundHandlerAdapter channelInboundHandlerAdapter = new LambdaInboundHandler(this.serverChannelGroup); + + serverBootstrap.group(this.serverBossGroup, this.serverWorkerGroup) + .channel(NioServerSocketChannel.class) + .childHandler(new NettyChannelInitializer(channelInboundHandlerAdapter)) + .option(ChannelOption.SO_BACKLOG, 128) + .option(ChannelOption.SO_REUSEADDR, true) + .childOption(ChannelOption.SO_KEEPALIVE, true); + System.out.println("##### Server Bootstrap set #####"); + + this.publicAddress = this.getPublicIP(); + try { + this.localAddress = this.getLocalHostLANAddress().getHostAddress(); + } catch (UnknownHostException e) { + e.printStackTrace(); + throw new RuntimeException(e); + } + + try { + this.acceptor = serverBootstrap.bind( + new InetSocketAddress(localAddress, this.port)).sync().channel(); + LOG.info("Server address: {}, Assigned server port = {}", localAddress, port); + } catch (Exception e) { + e.printStackTrace(); + } + + LOG.info("Public address: {}, localAddress: {}, port: {}", publicAddress, localAddress, port); + LOG.info("Acceptor open: {}, active: {}", acceptor.isOpen(), acceptor.isActive()); + } + + private String getPublicIP() { + final URL whatismyip; + try { + whatismyip = new URL("http://checkip.amazonaws.com";); + } catch (MalformedURLException e) { + e.printStackTrace(); + throw new RuntimeException(e); + } + + final BufferedReader in; + try { + in = new BufferedReader(new InputStreamReader( + whatismyip.openStream())); + } catch (IOException e) { + e.printStackTrace(); + throw new RuntimeException(e); + } + + String ip = null; //you get the IP as a String + try { + ip = in.readLine(); + } catch (IOException e) { + e.printStackTrace(); + throw new RuntimeException(e); + } + return ip; + } + + private InetAddress getLocalHostLANAddress() throws UnknownHostException { Review comment: please reference a site (if you copy this code from the site) ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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