[jboss-cvs] JBossAS SVN: r77397 - trunk/tomcat/src/main/org/jboss/web/tomcat/service/modcluster/load/metric/impl.

[jboss-cvs-commits at lists.jboss.org]

Author: pferraro
Date: 2008-08-25 00:05:18 -0400 (Mon, 25 Aug 2008)
New Revision: 77397

Added:
   trunk/tomcat/src/main/org/jboss/web/tomcat/service/modcluster/load/metric/impl/ConnectionPoolLoadMetricSource.java
   trunk/tomcat/src/main/org/jboss/web/tomcat/service/modcluster/load/metric/impl/ConnectionPoolUsageLoadMetric.java
Log:
Added load metric for connection pool usage.

Added: trunk/tomcat/src/main/org/jboss/web/tomcat/service/modcluster/load/metric/impl/ConnectionPoolLoadMetricSource.java
===================================================================
--- trunk/tomcat/src/main/org/jboss/web/tomcat/service/modcluster/load/metric/impl/ConnectionPoolLoadMetricSource.java	                        (rev 0)
+++ trunk/tomcat/src/main/org/jboss/web/tomcat/service/modcluster/load/metric/impl/ConnectionPoolLoadMetricSource.java	2008-08-25 04:05:18 UTC (rev 77397)
@@ -0,0 +1,84 @@
+/*
+ * JBoss, Home of Professional Open Source.
+ * Copyright 2008, Red Hat Middleware LLC, and individual contributors
+ * as indicated by the @author tags. See the copyright.txt file in the
+ * distribution for a full listing of individual contributors.
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this software; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+package org.jboss.web.tomcat.service.modcluster.load.metric.impl;
+
+import javax.management.MBeanServer;
+import javax.management.MalformedObjectNameException;
+
+import org.jboss.web.tomcat.service.modcluster.load.metric.LoadMetricSourceRegistration;
+
+/**
+ * {@link LoadMetricSource} implementation that simplifies generic mbean access to 
+ * a set of JBoss JCA connection pools.
+ */
+public class ConnectionPoolLoadMetricSource extends ObjectNamePatternLoadMetricSource
+{
+   private static final String DEFAULT_PATTERN = "jboss.jca:service=ManagedConnectionPool,*";
+   
+   /**
+    * Create a new ConnectionPoolLoadMetricSource.
+    * 
+    * @param registration
+    * @param server
+    * @throws MalformedObjectNameException
+    */
+   public ConnectionPoolLoadMetricSource(LoadMetricSourceRegistration registration, MBeanServer server) throws MalformedObjectNameException
+   {
+      super(registration, DEFAULT_PATTERN, server);
+   }
+
+   /**
+    * Create a new ConnectionPoolLoadMetricSource.
+    * 
+    * @param registration
+    * @param pattern
+    * @param server
+    * @throws MalformedObjectNameException
+    */
+   public ConnectionPoolLoadMetricSource(LoadMetricSourceRegistration registration, String pattern, MBeanServer server) throws MalformedObjectNameException
+   {
+      super(registration, pattern, server);
+   }
+
+   /**
+    * Create a new ConnectionPoolLoadMetricSource.
+    * 
+    * @param registration
+    * @throws MalformedObjectNameException
+    */
+   public ConnectionPoolLoadMetricSource(LoadMetricSourceRegistration registration) throws MalformedObjectNameException
+   {
+      super(registration, DEFAULT_PATTERN);
+   }
+
+   /**
+    * Create a new ConnectionPoolLoadMetricSource.
+    * 
+    * @param registration
+    * @param pattern
+    * @throws MalformedObjectNameException
+    */
+   public ConnectionPoolLoadMetricSource(LoadMetricSourceRegistration registration, String pattern) throws MalformedObjectNameException
+   {
+      super(registration, pattern);
+   }
+}

Added: trunk/tomcat/src/main/org/jboss/web/tomcat/service/modcluster/load/metric/impl/ConnectionPoolUsageLoadMetric.java
===================================================================
--- trunk/tomcat/src/main/org/jboss/web/tomcat/service/modcluster/load/metric/impl/ConnectionPoolUsageLoadMetric.java	                        (rev 0)
+++ trunk/tomcat/src/main/org/jboss/web/tomcat/service/modcluster/load/metric/impl/ConnectionPoolUsageLoadMetric.java	2008-08-25 04:05:18 UTC (rev 77397)
@@ -0,0 +1,81 @@
+/*
+ * JBoss, Home of Professional Open Source.
+ * Copyright 2008, Red Hat Middleware LLC, and individual contributors
+ * as indicated by the @author tags. See the copyright.txt file in the
+ * distribution for a full listing of individual contributors.
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this software; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+package org.jboss.web.tomcat.service.modcluster.load.metric.impl;
+
+import java.util.List;
+
+/**
+ * {@link LoadMetric} implementation that returns the usage ratio of a connection pool.
+ * 
+ * @author Paul Ferraro
+ */
+public class ConnectionPoolUsageLoadMetric extends AbstractLoadMetric
+{
+   private static final String DEFAULT_USED_ATTRIBUTE = "InUseConnectionCount";
+   private static final String DEFAULT_MAX_ATTRIBUTE = "MaxSize";
+   
+   private final ConnectionPoolLoadMetricSource source;
+   private final String usedAttribute;
+   private final String maxAttribute;
+   
+   public ConnectionPoolUsageLoadMetric(ConnectionPoolLoadMetricSource source)
+   {
+      this(source, DEFAULT_USED_ATTRIBUTE, DEFAULT_MAX_ATTRIBUTE);
+   }
+   
+   public ConnectionPoolUsageLoadMetric(ConnectionPoolLoadMetricSource source, String usedAttribute, String maxAttribute)
+   {
+      this.source = source;
+      
+      source.add(this);
+      
+      this.usedAttribute = usedAttribute;
+      this.maxAttribute = maxAttribute;
+   }
+   
+   /**
+    * @{inheritDoc}
+    * @see org.jboss.web.tomcat.service.modcluster.load.metric.LoadMetric#getLoad()
+    */
+   public double getLoad() throws Exception
+   {
+      double used = 0;
+      
+      List<Number> results = this.source.getAttributes(this.usedAttribute, Number.class);
+      
+      for (Number result: results)
+      {
+         used += result.longValue();
+      }
+      
+      double max = 0;
+      
+      results = this.source.getAttributes(this.maxAttribute, Number.class);
+      
+      for (Number result: results)
+      {
+         max += result.longValue();
+      }
+      
+      return used / max;
+   }
+}