Package com.sun.enterprise.util

Source Code of com.sun.enterprise.util.S1ASThreadPoolManager

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package com.sun.enterprise.util;

import com.sun.corba.ee.spi.orbutil.threadpool.ThreadPoolManager;
import com.sun.corba.ee.spi.orbutil.threadpool.ThreadPool;
import com.sun.corba.ee.spi.orbutil.threadpool.NoSuchThreadPoolException;
import com.sun.corba.ee.spi.orbutil.threadpool.ThreadPoolChooser;

import com.sun.corba.ee.impl.orbutil.threadpool.ThreadPoolImpl;
import com.sun.corba.ee.impl.orbutil.ORBConstants;

import com.sun.enterprise.server.ApplicationServer;
import com.sun.enterprise.server.ServerContext;

import com.sun.enterprise.config.ConfigContext;
import com.sun.enterprise.config.ConfigException;
import com.sun.enterprise.config.ConfigBean;
import com.sun.enterprise.config.serverbeans.Server;
import com.sun.enterprise.config.serverbeans.IiopService;
import com.sun.enterprise.config.serverbeans.ServerBeansFactory;
import com.sun.enterprise.config.serverbeans.Orb;
import com.sun.enterprise.config.serverbeans.Config;
import com.sun.enterprise.config.serverbeans.ThreadPools;

import java.util.HashMap;
import java.util.ArrayList;
import java.util.logging.*;
import com.sun.logging.*;

public class S1ASThreadPoolManager implements ThreadPoolManager {

    static Logger _logger=LogDomains.getLogger(LogDomains.UTIL_LOGGER);

    private static final int DEFAULT_NUMBER_OF_QUEUES = 0;
    private static final int DEFAULT_MIN_THREAD_COUNT = 10;
    private static final int DEFAULT_MAX_THREAD_COUNT = 200;

    private static HashMap idToIndexTable = new HashMap();
    private static HashMap indexToIdTable = new HashMap();
    private static ArrayList threadpoolList = new ArrayList();
    private static String defaultID;

    private static ThreadPoolManager s1asThreadPoolMgr = new S1ASThreadPoolManager();

    public static ThreadPoolManager getThreadPoolManager() {
  return s1asThreadPoolMgr;
    }


    S1ASThreadPoolManager() {

  Orb orbBean = null;
 
        try {
            ServerContext serverContext = ApplicationServer.getServerContext();
            
            ConfigContext configContext = serverContext.getConfigContext();
            assert(configContext != null);
       
            // IiopService iiopServiceBean = ServerBeansFactory.getIiopServiceBean(configContext);
      Config config = ServerBeansFactory.getConfigBean(configContext);

            assert(config != null);

            // orbBean = iiopServiceBean.getOrb();
      com.sun.enterprise.config.serverbeans.ThreadPools
          threadpoolsElement = config.getThreadPools();
            assert (threadpoolsElement != null);

      com.sun.enterprise.config.serverbeans.ThreadPool[]
      allThreadpools = threadpoolsElement.getThreadPool();
      for (int i = 0; i < allThreadpools.length; i++) {
    createThreadPools(allThreadpools[i], i);
      }
      defaultID = (String)indexToIdTable.get(new Integer(0));
        } catch (ConfigException cfe) {
            _logger.log(Level.SEVERE,"enterprise_util.orbmgr_config_excep", cfe);
        } catch (NullPointerException npe) {
            _logger.log(Level.FINE,"Server Context is NULL. Ignoring and proceeding.");
        }

 
    }


    private void createThreadPools(com.sun.enterprise.config.serverbeans.ThreadPool
      threadpoolBean, int index) {
  String threadpoolId = null;
  String minThreadsValue, maxThreadsValue, timeoutValue, numberOfQueuesValue;
  int minThreads = DEFAULT_MIN_THREAD_COUNT;
  int maxThreads = DEFAULT_MAX_THREAD_COUNT;
  int idleTimeoutInSeconds = ORBConstants.DEFAULT_INACTIVITY_TIMEOUT;
  int numberOfQueues = DEFAULT_NUMBER_OF_QUEUES;

  try {
      threadpoolId = threadpoolBean.getThreadPoolId();
  } catch (NullPointerException npe) {
      if(_logger.isLoggable(Level.WARNING)) {
    _logger.log(Level.WARNING, "ThreadPoolBean may be null ", npe);
            }
  }
  try {
      minThreadsValue = threadpoolBean.getMinThreadPoolSize();
      minThreads = Integer.parseInt(minThreadsValue);
  } catch (NullPointerException npe) {
      if(_logger.isLoggable(Level.WARNING)) {
    _logger.log(Level.WARNING, "ThreadPoolBean may be null ", npe);
    _logger.log(Level.WARNING,
      "Using default value for steady-threadpool-size = " + minThreads);
            }
  } catch (NumberFormatException nfe) {
      if(_logger.isLoggable(Level.WARNING)) {
    _logger.log(Level.WARNING,"enterprise_util.excep_orbmgr_numfmt",nfe);
    _logger.log(Level.WARNING,
      "Using default value for min-threadpool-size = " + minThreads);
            }
  }
  try {
      maxThreadsValue = threadpoolBean.getMaxThreadPoolSize();
      maxThreads = Integer.parseInt(maxThreadsValue);
  } catch (NullPointerException npe) {
      if(_logger.isLoggable(Level.WARNING)) {
    _logger.log(Level.WARNING, "ThreadPoolBean may be null ", npe);
    _logger.log(Level.WARNING,
      "Using default value for max-threadpool-size = " + maxThreads);
            }
  } catch (NumberFormatException nfe) {
      if(_logger.isLoggable(Level.WARNING)) {
    _logger.log(Level.WARNING,"enterprise_util.excep_orbmgr_numfmt",nfe);
    _logger.log(Level.WARNING,
      "Using default value for max-threadpool-size = " + maxThreads);
            }
  }
  try {
      timeoutValue = threadpoolBean.getIdleThreadTimeoutInSeconds();
      idleTimeoutInSeconds = Integer.parseInt(timeoutValue);
  } catch (NullPointerException npe) {
      if(_logger.isLoggable(Level.WARNING)) {
    _logger.log(Level.WARNING, "ThreadPoolBean may be null ", npe);
    _logger.log(Level.WARNING,
      "Using default value for idle-thread-timeout-in-seconds = " +
      idleTimeoutInSeconds);
            }
  } catch (NumberFormatException nfe) {
      if(_logger.isLoggable(Level.WARNING)) {
    _logger.log(Level.WARNING,"enterprise_util.excep_orbmgr_numfmt",nfe);
    _logger.log(Level.WARNING,
      "Using default value for idle-thread-timeout-in-seconds = " +
      idleTimeoutInSeconds);
            }
  }

  // Currently this value is not used but when multi-queue threadpools are
  // implemented this could be used to decide which one to instantiate and
  // number of queues in the multi-queue threadpool
  try {
      numberOfQueuesValue = threadpoolBean.getNumWorkQueues();
      numberOfQueues = Integer.parseInt(numberOfQueuesValue);
  } catch (NullPointerException npe) {
      if(_logger.isLoggable(Level.WARNING)) {
    _logger.log(Level.WARNING, "ThreadPoolBean may be null ", npe);
    _logger.log(Level.WARNING,
      "Using default value for num-work-queues = " +
      numberOfQueues);
            }
  } catch (NumberFormatException nfe) {
      if(_logger.isLoggable(Level.WARNING)) {
    _logger.log(Level.WARNING,"enterprise_util.excep_orbmgr_numfmt",nfe);
    _logger.log(Level.WARNING,
      "Using default value for num-work-queues = " +
      numberOfQueues);
            }
  }
 
  // Mutiplied the idleTimeoutInSeconds by 1000 to convert to milliseconds
  com.sun.corba.ee.spi.orbutil.threadpool.ThreadPool threadpool =
      new ThreadPoolImpl(minThreads, maxThreads,
        idleTimeoutInSeconds * 1000, threadpoolId,
             ApplicationServer.getServerContext().getCommonClassLoader());


  // Add the threadpool instance to the threadpoolList
  threadpoolList.add(threadpool);

  // Associate the threadpoolId to the index passed
  idToIndexTable.put(threadpoolId, new Integer(index));

  // Associate the threadpoolId to the index passed
  indexToIdTable.put(new Integer(index), threadpoolId);
 
    }

    /**
    * This method will return an instance of the threadpool given a threadpoolId,
    * that can be used by any component in the app. server.
    *
    * @throws NoSuchThreadPoolException thrown when invalid threadpoolId is passed
    * as a parameter
    */
    public com.sun.corba.ee.spi.orbutil.threadpool.ThreadPool
        getThreadPool(String id)
        throws NoSuchThreadPoolException {

  Integer i = (Integer)idToIndexTable.get(id);
  if (i == null) {
      throw new NoSuchThreadPoolException();
  }
  try {
      com.sun.corba.ee.spi.orbutil.threadpool.ThreadPool threadpool =
    (com.sun.corba.ee.spi.orbutil.threadpool.ThreadPool)
    threadpoolList.get(i.intValue());
      return threadpool;
  } catch (IndexOutOfBoundsException iobe) {
      throw new NoSuchThreadPoolException();
  }
    }

    /**
    * This method will return an instance of the threadpool given a numeric threadpoolId.
    * This method will be used by the ORB to support the functionality of
    * dedicated threadpool for EJB beans
    *
    * @throws NoSuchThreadPoolException thrown when invalidnumericIdForThreadpool is passed
    * as a parameter
    */
    public com.sun.corba.ee.spi.orbutil.threadpool.ThreadPool
      getThreadPool(int numericIdForThreadpool)
        throws NoSuchThreadPoolException {

  try {
      com.sun.corba.ee.spi.orbutil.threadpool.ThreadPool threadpool =
    (com.sun.corba.ee.spi.orbutil.threadpool.ThreadPool)
    threadpoolList.get(numericIdForThreadpool);
      return threadpool;
  } catch (IndexOutOfBoundsException iobe) {
      throw new NoSuchThreadPoolException();
  }
    }

    /**
    * This method is used to return the numeric id of the threadpool, given a String
    * threadpoolId. This is used by the POA interceptors to add the numeric threadpool
    * Id, as a tagged component in the IOR. This is used to provide the functionality of
    * dedicated threadpool for EJB beans
    */
    public int  getThreadPoolNumericId(String id) {
  Integer i = (Integer)idToIndexTable.get(id);
  return ((i == null) ? 0 : i.intValue());
    }

    /**
    * Return a String Id for a numericId of a threadpool managed by the threadpool
    * manager
    */
    public String getThreadPoolStringId(int numericIdForThreadpool) {
  String id = (String)indexToIdTable.get(new Integer(numericIdForThreadpool));
  return ((id == null) ? defaultID : id);
    }

    /**
    * Returns the first instance of ThreadPool in the ThreadPoolManager
    */
    public com.sun.corba.ee.spi.orbutil.threadpool.ThreadPool
          getDefaultThreadPool() {
  try {
      return getThreadPool(0);
  } catch (NoSuchThreadPoolException nstpe) {
      if(_logger.isLoggable(Level.WARNING)) {
    _logger.log(Level.WARNING, "No default ThreadPool defined ", nstpe);
            }
  }
  return null;
    }

    /**
     * Return an instance of ThreadPoolChooser based on the componentId that was
     * passed as argument
     */
    public ThreadPoolChooser getThreadPoolChooser(String componentId) {
  //FIXME: This method is not used, but should be fixed once
  //ORB's nio select starts working and we start using ThreadPoolChooser
  //This will be mostly used by the ORB
  return null;
    }

    /**
     * Return an instance of ThreadPoolChooser based on the componentIndex that was
     * passed as argument. This is added for improved performance so that the caller
     * does not have to pay the cost of computing hashcode for the componentId
     */
    public ThreadPoolChooser getThreadPoolChooser(int componentIndex) {
  //FIXME: This method is not used, but should be fixed once
  //ORB's nio select starts working and we start using ThreadPoolChooser
  //This will be mostly used by the ORB
  return null;
    }

    /**
     * Sets a ThreadPoolChooser for a particular componentId in the ThreadPoolManager. This
     * would enable any component to add a ThreadPoolChooser for their specific use
     */
    public void setThreadPoolChooser(String componentId, ThreadPoolChooser aThreadPoolChooser) {
  //FIXME: This method is not used, but should be fixed once
  //ORB's nio select starts working and we start using ThreadPoolChooser
  //This will be mostly used by the ORB
    }

    /**
     * Gets the numeric index associated with the componentId specified for a
     * ThreadPoolChooser. This method would help the component call the more
     * efficient implementation i.e. getThreadPoolChooser(int componentIndex)
     */
    public int getThreadPoolChooserNumericId(String componentId) {
  //FIXME: This method is not used, but should be fixed once
  //ORB's nio select starts working and we start using ThreadPoolChooser
  //This will be mostly used by the ORB
  return 0;
    }


}

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