org.apache.kylin.stream.server.StreamingReceiver Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.kylin.stream.server;
import java.io.File;
import java.io.FileInputStream;
import java.util.Properties;
import org.apache.kylin.common.KylinConfig;
import org.apache.kylin.stream.core.model.Node;
import org.apache.kylin.stream.core.util.NodeUtil;
import org.apache.log4j.PropertyConfigurator;
import org.eclipse.jetty.server.Handler;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.server.ServerConnector;
import org.eclipse.jetty.server.handler.ContextHandler;
import org.eclipse.jetty.server.handler.ContextHandlerCollection;
import org.eclipse.jetty.server.handler.ResourceHandler;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;
import org.eclipse.jetty.util.thread.QueuedThreadPool;
import org.eclipse.jetty.util.thread.ThreadPool;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.context.support.XmlWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;
public class StreamingReceiver {
private static final Logger logger = LoggerFactory.getLogger(StreamingReceiver.class);
private Server httpServer;
public static void main(String[] args) {
try {
StreamingReceiver receiver = new StreamingReceiver();
receiver.start();
} catch (Exception e) {
logger.error("streaming receiver start fail", e);
}
}
private void start() throws Exception {
if (System.getProperty("debug") != null) {
setupDebugEnv();
}
startStreamingServer();
startRpcServer();
startHttpServer();
}
private void startStreamingServer() throws Exception {
StreamingServer.getInstance().start();
}
private void startHttpServer() throws Exception {
KylinConfig kylinConfig = KylinConfig.getInstanceFromEnv();
createAndConfigHttpServer(kylinConfig);
ContextHandlerCollection contexts = new ContextHandlerCollection();
ServletContextHandler context = new ServletContextHandler();
context.setContextPath("/kylin");
XmlWebApplicationContext ctx = new XmlWebApplicationContext();
ctx.setConfigLocation("classpath:applicationContext.xml");
ctx.refresh();
DispatcherServlet dispatcher = new DispatcherServlet(ctx);
context.addServlet(new ServletHolder(dispatcher), "/api/*");
ContextHandler logContext = new ContextHandler("/kylin/logs");
String logDir = getLogDir(kylinConfig);
ResourceHandler logHandler = new ResourceHandler();
logHandler.setResourceBase(logDir);
logHandler.setDirectoriesListed(true);
logContext.setHandler(logHandler);
contexts.setHandlers(new Handler[] { context, logContext });
httpServer.setHandler(contexts);
httpServer.start();
httpServer.join();
}
private void startRpcServer() throws Exception {
// currently use http server as rpc server
}
private String getLogDir(KylinConfig kylinConfig) {
String kylinHome = kylinConfig.getKylinHome();
if (kylinHome == null) {
kylinHome = System.getProperty("KYLIN_HOME");
}
return kylinHome + File.separator + "logs";
}
private void createAndConfigHttpServer(KylinConfig kylinConfig) {
httpServer = new Server(createThreadPool(kylinConfig));
ServerConnector httpConnector = getHttpConnector();
httpConnector.setPort(getHttpPort());
httpConnector.setIdleTimeout(30000);
httpServer.addConnector(httpConnector);
}
private ServerConnector getHttpConnector() {
return new ServerConnector(httpServer);
}
private ThreadPool createThreadPool(KylinConfig kylinConfig) {
QueuedThreadPool threadPool = new QueuedThreadPool();
threadPool.setMinThreads(kylinConfig.getStreamingReceiverHttpMinThreads());
threadPool.setMaxThreads(kylinConfig.getStreamingReceiverHttpMaxThreads());
return threadPool;
}
private void setupDebugEnv() {
try {
Properties props = new Properties();
props.load(new FileInputStream("../build/conf/kylin-tools-log4j.properties"));
PropertyConfigurator.configure(props);
KylinConfig.setSandboxEnvIfPossible();
KylinConfig config = KylinConfig.getInstanceFromEnv();
config.setProperty("kylin.stream.settled.storage",
"org.apache.kylin.stream.server.storage.LocalStreamStorage");
} catch (Exception e) {
logger.error("debug env setup fail", e);
}
}
private int getHttpPort() {
Node currentNode = NodeUtil.getCurrentNode(StreamingServer.DEFAULT_PORT);
return currentNode.getPort();
}
}