Java UserGroupInformation.hasKerberosCredentials方法代碼示例

import org.apache.hadoop.security.UserGroupInformation; //導入方法依賴的package包/類
private void reloginUGI(UserGroupInformation ugi) {
  try {
    if (ugi.hasKerberosCredentials()) {
      long now = System.currentTimeMillis();
      if (now - lastReloginAttempt < MIN_TIME_BEFORE_RELOGIN) {
        return;
      }
      lastReloginAttempt = now;
      ugi.checkTGTAndReloginFromKeytab();
    }
  } catch (IOException e) {
    throw new SecurityException("Error trying to relogin from keytab for user "
            + ugi.getUserName(), e);
  }
}
 

import org.apache.hadoop.security.UserGroupInformation; //導入方法依賴的package包/類
private synchronized boolean shouldAuthenticateOverKrb() throws IOException {
  UserGroupInformation loginUser = UserGroupInformation.getLoginUser();
  UserGroupInformation currentUser = UserGroupInformation.getCurrentUser();
  UserGroupInformation realUser = currentUser.getRealUser();
  if (authMethod == AuthMethod.KERBEROS && loginUser != null &&
  // Make sure user logged in using Kerberos either keytab or TGT
      loginUser.hasKerberosCredentials() &&
      // relogin only in case it is the login user (e.g. JT)
      // or superuser (like oozie).
      (loginUser.equals(currentUser) || loginUser.equals(realUser))) {
    return true;
  }
  return false;
}
 

import org.apache.hadoop.security.UserGroupInformation; //導入方法依賴的package包/類
/**
 * Create a SASL ACL for the user
 * @param perms permissions
 * @return an ACL for the current user or null if they aren't a kerberos user
 * @throws IOException
 */
public ACL createSaslACLFromCurrentUser(int perms) throws IOException {
  UserGroupInformation currentUser = UserGroupInformation.getCurrentUser();
  if (currentUser.hasKerberosCredentials()) {
    return createSaslACL(currentUser, perms);
  } else {
    return null;
  }
}
 

import org.apache.hadoop.security.UserGroupInformation; //導入方法依賴的package包/類
private synchronized boolean shouldAuthenticateOverKrb() throws IOException {
  UserGroupInformation loginUser = UserGroupInformation.getLoginUser();
  UserGroupInformation currentUser =
    UserGroupInformation.getCurrentUser();
  UserGroupInformation realUser = currentUser.getRealUser();
  return authMethod == AuthMethod.KERBEROS &&
      loginUser != null &&
      //Make sure user logged in using Kerberos either keytab or TGT
      loginUser.hasKerberosCredentials() &&
      // relogin only in case it is the login user (e.g. JT)
      // or superuser (like oozie).
      (loginUser.equals(currentUser) || loginUser.equals(realUser));
}
 

import org.apache.hadoop.security.UserGroupInformation; //導入方法依賴的package包/類
/**
 * Check if user should authenticate over Kerberos
 *
 * @return true if should be authenticated over Kerberos
 * @throws java.io.IOException on failure of check
 */
private synchronized boolean shouldAuthenticateOverKrb() throws IOException {
  UserGroupInformation loginUser = UserGroupInformation.getLoginUser();
  UserGroupInformation currentUser = UserGroupInformation.getCurrentUser();
  UserGroupInformation realUser = currentUser.getRealUser();
  return authMethod == AuthMethod.KERBEROS &&
      loginUser != null &&
      //Make sure user logged in using Kerberos either keytab or TGT
      loginUser.hasKerberosCredentials() &&
      // relogin only in case it is the login user (e.g. JT)
      // or superuser (like oozie).
      (loginUser.equals(currentUser) || loginUser.equals(realUser));
}
 

import org.apache.hadoop.security.UserGroupInformation; //導入方法依賴的package包/類
private synchronized void setupConnection() throws IOException {
  short ioFailures = 0;
  short timeoutFailures = 0;
  while (true) {
    try {
      this.socket = socketFactory.createSocket();
      this.socket.setTcpNoDelay(tcpNoDelay);
      this.socket.setKeepAlive(true);
      
      if (tcpLowLatency) {
        /*
         * This allows intermediate switches to shape IPC traffic
         * differently from Shuffle/HDFS DataStreamer traffic.
         *
         * IPTOS_RELIABILITY (0x04) | IPTOS_LOWDELAY (0x10)
         *
         * Prefer to optimize connect() speed & response latency over net
         * throughput.
         */
        this.socket.setTrafficClass(0x04 | 0x10);
        this.socket.setPerformancePreferences(1, 2, 0);
      }

      /*
       * Bind the socket to the host specified in the principal name of the
       * client, to ensure Server matching address of the client connection
       * to host name in principal passed.
       */
      UserGroupInformation ticket = remoteId.getTicket();
      if (ticket != null && ticket.hasKerberosCredentials()) {
        KerberosInfo krbInfo = 
          remoteId.getProtocol().getAnnotation(KerberosInfo.class);
        if (krbInfo != null && krbInfo.clientPrincipal() != null) {
          String host = 
            SecurityUtil.getHostFromPrincipal(remoteId.getTicket().getUserName());
          
          // If host name is a valid local address then bind socket to it
          InetAddress localAddr = NetUtils.getLocalInetAddress(host);
          if (localAddr != null) {
            this.socket.setReuseAddress(true);
            this.socket.bind(new InetSocketAddress(localAddr, 0));
          }
        }
      }
      
      NetUtils.connect(this.socket, server, connectionTimeout);
      if (rpcTimeout > 0) {
        pingInterval = rpcTimeout;  // rpcTimeout overwrites pingInterval
      }
      this.socket.setSoTimeout(pingInterval);
      return;
    } catch (ConnectTimeoutException toe) {
      /* Check for an address change and update the local reference.
       * Reset the failure counter if the address was changed
       */
      if (updateAddress()) {
        timeoutFailures = ioFailures = 0;
      }
      handleConnectionTimeout(timeoutFailures++,
          maxRetriesOnSocketTimeouts, toe);
    } catch (IOException ie) {
      if (updateAddress()) {
        timeoutFailures = ioFailures = 0;
      }
      handleConnectionFailure(ioFailures++, ie);
    }
  }
}
 

import org.apache.hadoop.security.UserGroupInformation; //導入方法依賴的package包/類
private synchronized void setupConnection() throws IOException {
  short ioFailures = 0;
  short timeoutFailures = 0;
  while (true) {
    try {
      this.socket = socketFactory.createSocket();
      this.socket.setTcpNoDelay(tcpNoDelay);
      this.socket.setKeepAlive(true);
      
      /*
       * Bind the socket to the host specified in the principal name of the
       * client, to ensure Server matching address of the client connection
       * to host name in principal passed.
       */
      UserGroupInformation ticket = remoteId.getTicket();
      if (ticket != null && ticket.hasKerberosCredentials()) {
        KerberosInfo krbInfo = 
          remoteId.getProtocol().getAnnotation(KerberosInfo.class);
        if (krbInfo != null && krbInfo.clientPrincipal() != null) {
          String host = 
            SecurityUtil.getHostFromPrincipal(remoteId.getTicket().getUserName());
          
          // If host name is a valid local address then bind socket to it
          InetAddress localAddr = NetUtils.getLocalInetAddress(host);
          if (localAddr != null) {
            this.socket.bind(new InetSocketAddress(localAddr, 0));
          }
        }
      }
      
      NetUtils.connect(this.socket, server, connectionTimeout);
      if (rpcTimeout > 0) {
        pingInterval = rpcTimeout;  // rpcTimeout overwrites pingInterval
      }
      this.socket.setSoTimeout(pingInterval);
      return;
    } catch (ConnectTimeoutException toe) {
      /* Check for an address change and update the local reference.
       * Reset the failure counter if the address was changed
       */
      if (updateAddress()) {
        timeoutFailures = ioFailures = 0;
      }
      handleConnectionTimeout(timeoutFailures++,
          maxRetriesOnSocketTimeouts, toe);
    } catch (IOException ie) {
      if (updateAddress()) {
        timeoutFailures = ioFailures = 0;
      }
      handleConnectionFailure(ioFailures++, ie);
    }
  }
}