Java Server类代码示例

import org.apache.hadoop.ipc.RPC.Server; //导入依赖的package包/类
JournalNodeRpcServer(Configuration conf, JournalNode jn) throws IOException {
  this.jn = jn;
  
  Configuration confCopy = new Configuration(conf);
  
  // Ensure that nagling doesn't kick in, which could cause latency issues.
  confCopy.setBoolean("ipc.server.tcpnodelay", true);
  // reader threads will handle the RPC calls
  confCopy.setBoolean("ipc.direct.handling", true);
  // set the number of reader threads, should be at least the number of
  // served namenodes
  confCopy.setInt(Server.IPC_SERVER_RPC_READ_THREADS_KEY, confCopy.getInt(
      JournalConfigKeys.DFS_QJOURNAL_IPC_READER_KEY,
      JournalConfigKeys.DFS_QJOURNAL_IPC_READER_DEFAULT));

  InetSocketAddress addr = getAddress(confCopy);

  this.server = RPC.getServer(this, addr.getAddress().getHostAddress(), addr.getPort(),
      HANDLER_COUNT, false, confCopy, false);
  this.conf = confCopy;
}
 

import org.apache.hadoop.ipc.RPC.Server; //导入依赖的package包/类
private Server startServer(MyOptions opts) throws IOException {
  if (opts.serverThreads <= 0) {
    return null;
  }
  conf.setInt(CommonConfigurationKeys.IPC_SERVER_RPC_READ_THREADS_KEY,
      opts.serverReaderThreads);
  
  RPC.Server server;
  // Get RPC server for server side implementation
  if (opts.rpcEngine == ProtobufRpcEngine.class) {
    // Create server side implementation
    PBServerImpl serverImpl = new PBServerImpl();
    BlockingService service = TestProtobufRpcProto
        .newReflectiveBlockingService(serverImpl);

    server = new RPC.Builder(conf).setProtocol(TestRpcService.class)
        .setInstance(service).setBindAddress(opts.host).setPort(opts.getPort())
        .setNumHandlers(opts.serverThreads).setVerbose(false).build();
  } else if (opts.rpcEngine == WritableRpcEngine.class) {
    server = new RPC.Builder(conf).setProtocol(TestProtocol.class)
        .setInstance(new TestRPC.TestImpl()).setBindAddress(opts.host)
        .setPort(opts.getPort()).setNumHandlers(opts.serverThreads)
        .setVerbose(false).build();
  } else {
    throw new RuntimeException("Bad engine: " + opts.rpcEngine);
  }
  server.start();
  return server;
}
 

import org.apache.hadoop.ipc.RPC.Server; //导入依赖的package包/类
protected void startServer() throws Exception {
  Configuration conf = getConfig();
  YarnRPC rpc = YarnRPC.create(conf);
  this.server = (Server) rpc.getServer(
      ResourceManagerAdministrationProtocol.class, this, masterServiceBindAddress,
      conf, null,
      conf.getInt(YarnConfiguration.RM_ADMIN_CLIENT_THREAD_COUNT,
          YarnConfiguration.DEFAULT_RM_ADMIN_CLIENT_THREAD_COUNT));

  // Enable service authorization?
  if (conf.getBoolean(
      CommonConfigurationKeysPublic.HADOOP_SECURITY_AUTHORIZATION,
      false)) {
    refreshServiceAcls(
        getConfiguration(conf,
            YarnConfiguration.HADOOP_POLICY_CONFIGURATION_FILE),
        RMPolicyProvider.getInstance());
  }

  if (rmContext.isHAEnabled()) {
    RPC.setProtocolEngine(conf, HAServiceProtocolPB.class,
        ProtobufRpcEngine.class);

    HAServiceProtocolServerSideTranslatorPB haServiceProtocolXlator =
        new HAServiceProtocolServerSideTranslatorPB(this);
    BlockingService haPbService =
        HAServiceProtocolProtos.HAServiceProtocolService
            .newReflectiveBlockingService(haServiceProtocolXlator);
    server.addProtocol(RPC.RpcKind.RPC_PROTOCOL_BUFFER,
        HAServiceProtocol.class, haPbService);
  }

  this.server.start();
  conf.updateConnectAddr(YarnConfiguration.RM_BIND_HOST,
                         YarnConfiguration.RM_ADMIN_ADDRESS,
                         YarnConfiguration.DEFAULT_RM_ADMIN_ADDRESS,
                         server.getListenerAddress());
}
 

import org.apache.hadoop.ipc.RPC.Server; //导入依赖的package包/类
/**
 * Check that a request to change this node's HA state is valid.
 * In particular, verifies that, if auto failover is enabled, non-forced
 * requests from the HAAdmin CLI are rejected, and vice versa.
 *
 * @param req the request to check
 * @throws AccessControlException if the request is disallowed
 */
private void checkHaStateChange(StateChangeRequestInfo req)
    throws AccessControlException {
  switch (req.getSource()) {
    case REQUEST_BY_USER:
      if (autoFailoverEnabled) {
        throw new AccessControlException(
            "Manual failover for this ResourceManager is disallowed, " +
                "because automatic failover is enabled.");
      }
      break;
    case REQUEST_BY_USER_FORCED:
      if (autoFailoverEnabled) {
        LOG.warn("Allowing manual failover from " +
            org.apache.hadoop.ipc.Server.getRemoteAddress() +
            " even though automatic failover is enabled, because the user " +
            "specified the force flag");
      }
      break;
    case REQUEST_BY_ZKFC:
      if (!autoFailoverEnabled) {
        throw new AccessControlException(
            "Request from ZK failover controller at " +
                org.apache.hadoop.ipc.Server.getRemoteAddress() + " denied " +
                "since automatic failover is not enabled");
      }
      break;
  }
}
 

import org.apache.hadoop.ipc.RPC.Server; //导入依赖的package包/类
public static void main(String[] args) {
    try {
        Configuration configuration = new Configuration();
        Server server = new RPC.Builder(configuration)
                .setProtocol(PublicInterface.class)
                .setInstance(new RPCServer())
                .setBindAddress("127.0.0.1")
                .setPort(6537).build();
        server.start();
    } catch (IOException e) {
        e.printStackTrace();
    }

}
 

import org.apache.hadoop.ipc.RPC.Server; //导入依赖的package包/类
private static String getClientMachine() {
  String clientMachine = NamenodeWebHdfsMethods.getRemoteAddress();
  if (clientMachine == null) { //not a web client
    clientMachine = Server.getRemoteAddress();
  }
  if (clientMachine == null) { //not a RPC client
    clientMachine = "";
  }
  return clientMachine;
}
 

import org.apache.hadoop.ipc.RPC.Server; //导入依赖的package包/类
protected void startServer() throws Exception {
  Configuration conf = getConfig();
  YarnRPC rpc = YarnRPC.create(conf);
  this.server = (Server) rpc.getServer(
      ResourceManagerAdministrationProtocol.class, this, masterServiceAddress,
      conf, null,
      conf.getInt(YarnConfiguration.RM_ADMIN_CLIENT_THREAD_COUNT,
          YarnConfiguration.DEFAULT_RM_ADMIN_CLIENT_THREAD_COUNT));

  // Enable service authorization?
  if (conf.getBoolean(
      CommonConfigurationKeysPublic.HADOOP_SECURITY_AUTHORIZATION,
      false)) {
    refreshServiceAcls(
        getConfiguration(conf,
            YarnConfiguration.HADOOP_POLICY_CONFIGURATION_FILE),
        RMPolicyProvider.getInstance());
  }

  if (rmContext.isHAEnabled()) {
    RPC.setProtocolEngine(conf, HAServiceProtocolPB.class,
        ProtobufRpcEngine.class);

    HAServiceProtocolServerSideTranslatorPB haServiceProtocolXlator =
        new HAServiceProtocolServerSideTranslatorPB(this);
    BlockingService haPbService =
        HAServiceProtocolProtos.HAServiceProtocolService
            .newReflectiveBlockingService(haServiceProtocolXlator);
    server.addProtocol(RPC.RpcKind.RPC_PROTOCOL_BUFFER,
        HAServiceProtocol.class, haPbService);
  }

  this.server.start();
  conf.updateConnectAddr(YarnConfiguration.RM_ADMIN_ADDRESS,
      server.getListenerAddress());
}
 

import org.apache.hadoop.ipc.RPC.Server; //导入依赖的package包/类
private Server createServer(Class<?> pbProtocol, InetSocketAddress addr, Configuration conf,
    int numHandlers,
    BlockingService blockingService, String portRangeConfig) throws IOException {
  RPC.setProtocolEngine(conf, pbProtocol, ProtobufRpcEngine.class);
  RPC.Server server = new RPC.Builder(conf).setProtocol(pbProtocol)
      .setInstance(blockingService).setBindAddress(addr.getHostName())
      .setPort(addr.getPort()).setNumHandlers(numHandlers).setVerbose(false)
      .setPortRangeConfig(portRangeConfig).setSecretManager(secretManager)
      .build();
  server.addProtocol(RPC.RpcKind.RPC_PROTOCOL_BUFFER, pbProtocol, blockingService);
  return server;
}
 

import org.apache.hadoop.ipc.RPC.Server; //导入依赖的package包/类
@VisibleForTesting
public Server getServer() {
  return this.server;
}