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From jvermill...@apache.org
Subject svn commit: r441042 - in /directory/trunks/mina/core/src/main/java/org/apache/mina/management: ./ IoSessionStat.java StatCollector.java
Date Thu, 07 Sep 2006 10:05:14 GMT
Author: jvermillard
Date: Thu Sep  7 03:05:13 2006
New Revision: 441042

URL: http://svn.apache.org/viewvc?view=rev&rev=441042
Log:
StatCollector used for collecting IoSession throughput values

Added:
    directory/trunks/mina/core/src/main/java/org/apache/mina/management/
    directory/trunks/mina/core/src/main/java/org/apache/mina/management/IoSessionStat.java
    directory/trunks/mina/core/src/main/java/org/apache/mina/management/StatCollector.java

Added: directory/trunks/mina/core/src/main/java/org/apache/mina/management/IoSessionStat.java
URL: http://svn.apache.org/viewvc/directory/trunks/mina/core/src/main/java/org/apache/mina/management/IoSessionStat.java?view=auto&rev=441042
==============================================================================
--- directory/trunks/mina/core/src/main/java/org/apache/mina/management/IoSessionStat.java
(added)
+++ directory/trunks/mina/core/src/main/java/org/apache/mina/management/IoSessionStat.java
Thu Sep  7 03:05:13 2006
@@ -0,0 +1,108 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  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, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.mina.management;
+
+/**
+ * @author The Apache Directory Project (mina-dev@directory.apache.org)
+ * The collected stats for a session. It's used by StatCollector for attach throughput stats
to IoSession
+ */
+public class IoSessionStat
+{
+
+    long lastByteRead = -1;
+    long lastByteWrite = -1;
+    long lastMessageRead = -1;
+    long lastMessageWrite = -1;
+
+    float byteWrittenThroughput = 0;
+    float byteReadThroughput = 0;
+
+    float messageWrittenThroughput = 0;
+    float messageReadThroughput = 0;
+
+    /**
+     * Bytes read per second  
+     * @return bytes per second
+     */
+    public float getByteReadThroughput()
+    {
+        return byteReadThroughput;
+    }
+
+
+    /**
+     * Bytes written per second  
+     * @return bytes per second
+     */
+    public float getByteWrittenThroughput()
+    {
+        return byteWrittenThroughput;
+    }
+
+    /**
+     * Messages read per second  
+     * @return messages per second
+     */
+    public float getMessageReadThroughput()
+    {
+        return messageReadThroughput;
+    }
+
+    /**
+     * Messages written per second  
+     * @return messages per second
+     */
+    public float getMessageWrittenThroughput()
+    {
+        return messageWrittenThroughput;
+    }
+    
+    /**
+     * used for the StatCollector, last polling value 
+     */
+    long getLastByteRead()
+    {
+        return lastByteRead;
+    }
+
+    /**
+     * used for the StatCollector, last polling value 
+     */
+    long getLastByteWrite()
+    {
+        return lastByteWrite;
+    }
+
+    /**
+     * used for the StatCollector, last polling value 
+     */
+    long getLastMessageRead()
+    {
+        return lastMessageRead;
+    }
+
+    /**
+     * used for the StatCollector, last polling value 
+     */
+    long getLastMessageWrite()
+    {
+        return lastMessageWrite;
+    }
+}
\ No newline at end of file

Added: directory/trunks/mina/core/src/main/java/org/apache/mina/management/StatCollector.java
URL: http://svn.apache.org/viewvc/directory/trunks/mina/core/src/main/java/org/apache/mina/management/StatCollector.java?view=auto&rev=441042
==============================================================================
--- directory/trunks/mina/core/src/main/java/org/apache/mina/management/StatCollector.java
(added)
+++ directory/trunks/mina/core/src/main/java/org/apache/mina/management/StatCollector.java
Thu Sep  7 03:05:13 2006
@@ -0,0 +1,235 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  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, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License. 
+ *  
+ */
+package org.apache.mina.management;
+
+
+import java.net.SocketAddress;
+import java.util.ArrayList;
+import java.util.Iterator;
+
+import org.apache.mina.common.IoHandler;
+import org.apache.mina.common.IoService;
+import org.apache.mina.common.IoServiceConfig;
+import org.apache.mina.common.IoServiceListener;
+import org.apache.mina.common.IoSession;
+
+
+/**
+ * @author The Apache Directory Project (mina-dev@directory.apache.org)
+ * An  IoService statistic collector. It's polling all the sessions of a given IoService.
It's attaching a IoSessionStats object to
+ * all the sessions polled and filling the throughput values.
+ */
+public class StatCollector
+{
+    private IoService service;
+
+    public static String STAT_ID = "StatCollected";
+
+    private Worker worker;
+
+    private int pollingInterval = 5000;
+
+    private ArrayList polledSessions;
+
+    private IoServiceListener serviceListener = new IoServiceListener()
+    {
+
+        public void serviceActivated( IoService service, SocketAddress serviceAddress, IoHandler
handler,
+            IoServiceConfig config )
+        {
+        }
+
+
+        public void serviceDeactivated( IoService service, SocketAddress serviceAddress,
IoHandler handler,
+            IoServiceConfig config )
+        {
+        }
+
+
+        public void sessionCreated( IoSession session )
+        {
+            addSession( session );
+        }
+
+
+        public void sessionDestroyed( IoSession session )
+        {
+            removeSession( session );
+        }
+
+    };
+
+    /**
+     * create a stat collector for the given given service with the default polling time

+     * @param service the IoService to inspect
+     */
+    public StatCollector( IoService service )
+    {
+        this(service,5000);
+
+    }
+
+    /**
+     * create a stat collector for the given given service
+     * @param service the IoService to inspect
+     * @param pollingInterval milliseconds
+     */
+    public StatCollector( IoService service, int pollingInterval )
+    {
+        this.service = service;
+        this.pollingInterval = pollingInterval;
+    }
+
+    /**
+     * start collecting stats
+     */
+    public void start()
+    {
+        if ( worker != null && worker.isAlive() )
+            throw new RuntimeException( "Stat collecting already started" );
+
+        // add all current sessions
+
+        polledSessions = new ArrayList();
+
+        for ( Iterator iter = service.getManagedServiceAddresses().iterator(); iter.hasNext();
)
+        {
+            SocketAddress element = ( SocketAddress ) iter.next();
+
+            for ( Iterator iter2 = service.getManagedSessions( element ).iterator(); iter2.hasNext();
)
+            {
+                addSession( ( IoSession ) iter2.next() );
+
+            }
+        }
+
+        // listen for new ones
+        service.addListener( serviceListener );
+
+        // start polling
+        worker = new Worker();
+        worker.start();
+    }
+
+    /**
+     * stop collecting stats
+     */
+    public void stop()
+    {
+        service.removeListener( serviceListener );
+
+        // stop worker
+        worker.stop = true;
+        try
+        {
+            synchronized ( worker )
+            {
+                worker.join();
+            }
+        }
+        catch ( InterruptedException e )
+        {
+            // ignore
+        }
+
+        polledSessions.clear();
+
+    }
+
+    /**
+     * is the stat collector collecting
+     * @return true if started
+     */
+    public boolean isRunning()
+    {
+        return worker != null && worker.stop != true;
+    }
+
+
+    private void addSession( IoSession session )
+    {
+        polledSessions.add( session );
+        session.setAttribute( STAT_ID, new IoSessionStat() );
+    }
+
+
+    private void removeSession( IoSession session )
+    {
+        polledSessions.remove( session );
+        session.removeAttribute( STAT_ID );
+    }
+
+    private class Worker extends Thread
+    {
+
+        boolean stop = false;
+
+
+        private Worker()
+        {
+            super( "StatCollectorWorker" );
+        }
+
+        public void run()
+        {
+            while ( !stop )
+            {
+                for ( Iterator iter = polledSessions.iterator(); iter.hasNext(); )
+                {
+                    IoSession session = ( IoSession ) iter.next();
+                    IoSessionStat sessStat = ( IoSessionStat ) session.getAttribute( STAT_ID
);
+
+                    sessStat.lastByteRead = session.getReadBytes();
+                    sessStat.lastByteWrite = session.getWrittenBytes();
+                    sessStat.lastMessageRead = session.getReadMessages();
+                    sessStat.lastMessageWrite = session.getWrittenMessages();
+                }
+
+                // wait polling time
+                try
+                {
+                    Thread.sleep( pollingInterval );
+                }
+                catch ( InterruptedException e )
+                {
+                }
+
+                for ( Iterator iter = polledSessions.iterator(); iter.hasNext(); )
+                {
+                    IoSession session = ( IoSession ) iter.next();
+                    IoSessionStat sessStat = ( IoSessionStat ) session.getAttribute( STAT_ID
);
+
+                    sessStat.byteReadThroughput = ( ( float ) ( session.getReadBytes() -
sessStat.lastByteRead ) )
+                        / ( ( ( float ) pollingInterval ) / 1000f );
+                    sessStat.byteWrittenThroughput = ( ( float ) ( session.getWrittenBytes()
- sessStat.lastByteWrite ) )
+                        / ( ( ( float ) pollingInterval ) / 1000f );
+
+                    sessStat.messageReadThroughput = ( ( float ) ( session.getReadMessages()
- sessStat.lastMessageRead ) )
+                        / ( ( ( float ) pollingInterval ) / 1000f );
+                    sessStat.messageWrittenThroughput = ( ( float ) ( session.getWrittenMessages()
- sessStat.lastMessageWrite ) )
+                        / ( ( ( float ) pollingInterval ) / 1000f );
+
+                }
+
+            }
+        }
+    }
+
+}



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