Examples of org.apache.hadoop.http.HttpServer$SelectChannelConnectorWithSafeStartup

org.apache.hadoop.http.HttpServer
Create a Jetty embedded server to answer http requests. The primary goal is to serve up status information for the server. There are three contexts: "/logs/" -> points to the log directory "/static/" -> points to common static files (src/webapps/static) "/" -> the jsp server code from (src/webapps/) This class comes from the HttpServer in branch-2.2. HDFS and YARN have moved to use HttpServer2. This class exists for compatibility reasons, it stays in hadoop-common to allow HBase working with both Hadoop 2.2 and Hadoop 2.3. See HBASE-10336 for more details.


  public void start() throws IOException {
    final String infoHost = bindAddress.getHostName();
    int infoPort = bindAddress.getPort();


    httpServer = new HttpServer("hdfs", infoHost, infoPort,
                                infoPort == 0, conf,
                                new AccessControlList(conf.get(DFS_ADMIN, " "))) {
      {
        // Add SPNEGO support to NameNode
        if (UserGroupInformation.isSecurityEnabled()) {

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    // Initialize other scheduling parameters from the configuration
    checkpointConf = new CheckpointConf(conf);


    // initialize the webserver for uploading files.
    int tmpInfoPort = infoSocAddr.getPort();
    infoServer = new HttpServer("secondary", infoBindAddress, tmpInfoPort,
                                tmpInfoPort == 0, conf,
                                new AccessControlList(conf.get(DFS_ADMIN, " "))) {
      {
        if (UserGroupInformation.isSecurityEnabled()) {
          initSpnego(conf, DFSConfigKeys.DFS_SECONDARY_NAMENODE_INTERNAL_SPNEGO_USER_NAME_KEY,

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                                "mapred.job.tracker.http.address");
    InetSocketAddress infoSocAddr = NetUtils.createSocketAddr(infoAddr);
    String infoBindAddress = infoSocAddr.getHostName();
    int tmpInfoPort = infoSocAddr.getPort();
    this.startTime = System.currentTimeMillis();
    infoServer = new HttpServer("job", infoBindAddress, tmpInfoPort, 
        tmpInfoPort == 0, conf);
    infoServer.setAttribute("job.tracker", this);
    // initialize history parameters.
    boolean historyInitialized = JobHistory.init(conf, this.localMachine,
                                                 this.startTime);

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      NetUtils.getServerAddress(conf, "dfs.info.bindAddress", 
                                "dfs.info.port", "dfs.http.address");
    InetSocketAddress infoSocAddr = NetUtils.createSocketAddr(infoAddr);
    String infoHost = infoSocAddr.getHostName();
    int tmpInfoPort = infoSocAddr.getPort();
    this.infoServer = new HttpServer("hdfs", infoHost, tmpInfoPort, 
        tmpInfoPort == 0, conf);
    InetSocketAddress secInfoSocAddr = NetUtils.createSocketAddr(
        conf.get("dfs.https.address", infoHost + ":" + 0));
    Configuration sslConf = new Configuration(conf);
    sslConf.addResource(conf.get("https.keystore.info.rsrc", "sslinfo.xml"));

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                              "dfs.datanode.info.port",
                              "dfs.datanode.http.address");
    InetSocketAddress infoSocAddr = NetUtils.createSocketAddr(infoAddr);
    String infoHost = infoSocAddr.getHostName();
    int tmpInfoPort = infoSocAddr.getPort();
    this.infoServer = new HttpServer("datanode", infoHost, tmpInfoPort,
        tmpInfoPort == 0, conf);
    InetSocketAddress secInfoSocAddr = NetUtils.createSocketAddr(
        conf.get("dfs.datanode.https.address", infoHost + ":" + 0));
    Configuration sslConf = new Configuration(conf);
    sslConf.addResource(conf.get("https.keystore.info.rsrc", "sslinfo.xml"));

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                                "tasktracker.http.port",
                                "mapred.task.tracker.http.address");
    InetSocketAddress infoSocAddr = NetUtils.createSocketAddr(infoAddr);
    String httpBindAddress = infoSocAddr.getHostName();
    int httpPort = infoSocAddr.getPort();
    this.server = new HttpServer("task", httpBindAddress, httpPort,
        httpPort == 0, conf);
    workerThreads = conf.getInt("tasktracker.http.threads", 40);
    this.shuffleServerMetrics = new ShuffleServerMetrics(conf);
    server.setThreads(1, workerThreads);
    // let the jsp pages get to the task tracker, config, and other relevant

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      if (runBackgroundUpdates)
        new UpdateThread().start();
      // Register servlet with JobTracker's Jetty server
      if (taskTrackerManager instanceof JobTracker) {
        JobTracker jobTracker = (JobTracker) taskTrackerManager;
        HttpServer infoServer = jobTracker.infoServer;
        infoServer.setAttribute("scheduler", this);
        infoServer.addServlet("scheduler", "/scheduler",
            FairSchedulerServlet.class);
      }
    } catch (Exception e) {
      // Can't load one of the managers - crash the JobTracker now while it is
      // starting up so that the user notices.

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      NetUtils.getServerAddress(conf, "dfs.info.bindAddress", 
                                "dfs.info.port", "dfs.http.address");
    InetSocketAddress infoSocAddr = NetUtils.createSocketAddr(infoAddr);
    String infoHost = infoSocAddr.getHostName();
    int infoPort = infoSocAddr.getPort();
    this.httpServer = new HttpServer("hdfs", infoHost, infoPort, 
        infoPort == 0, conf);
    if (conf.getBoolean("dfs.https.enable", false)) {
      boolean needClientAuth = conf.getBoolean("dfs.https.need.client.auth", false);
      InetSocketAddress secInfoSocAddr = NetUtils.createSocketAddr(conf.get(
          "dfs.https.address", infoHost + ":" + 0));

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    rpcServer.start();


    LOG.info("ProxyJobTracker RPC Server up at " +
      rpcServer.getListenerAddress());


    infoServer = new HttpServer("proxyjt", infoBindAddress, port,
                                port == 0, conf);
    infoServer.setAttribute("proxy.job.tracker", this);
    infoServer.setAttribute("conf", conf);
    infoServer.addServlet("proxy", "/proxy",
                          ProxyJobTrackerServlet.class);

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    InetSocketAddress infoSocAddr = NetUtils.createSocketAddr(
      java.net.InetAddress.getLocalHost().getCanonicalHostName(),
      0);
    String infoBindAddress = infoSocAddr.getHostName();
    int tmpInfoPort = infoSocAddr.getPort();
    infoServer = new HttpServer("jt", infoBindAddress, tmpInfoPort,
        tmpInfoPort == 0, conf);
    infoServer.setAttribute("job.tracker", this);
    infoServer.start();
    this.infoPort = this.infoServer.getPort();

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