com.netspective.sparx.console.util.ResinDataSourcePoolStatistics.java Source code

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Here is the source code for com.netspective.sparx.console.util.ResinDataSourcePoolStatistics.java

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/*
 * Copyright (c) 2000-2004 Netspective Communications LLC. All rights reserved.
 *
 * Netspective Communications LLC ("Netspective") permits redistribution, modification and use of this file in source
 * and binary form ("The Software") under the Netspective Source License ("NSL" or "The License"). The following
 * conditions are provided as a summary of the NSL but the NSL remains the canonical license and must be accepted
 * before using The Software. Any use of The Software indicates agreement with the NSL.
 *
 * 1. Each copy or derived work of The Software must preserve the copyright notice and this notice unmodified.
 *
 * 2. Redistribution of The Software is allowed in object code form only (as Java .class files or a .jar file
 *    containing the .class files) and only as part of an application that uses The Software as part of its primary
 *    functionality. No distribution of the package is allowed as part of a software development kit, other library,
 *    or development tool without written consent of Netspective. Any modified form of The Software is bound by these
 *    same restrictions.
 *
 * 3. Redistributions of The Software in any form must include an unmodified copy of The License, normally in a plain
 *    ASCII text file unless otherwise agreed to, in writing, by Netspective.
 *
 * 4. The names "Netspective", "Axiom", "Commons", "Junxion", and "Sparx" are trademarks of Netspective and may not be
 *    used to endorse or appear in products derived from The Software without written consent of Netspective.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT,
 * ARE HEREBY DISCLAIMED.
 *
 * NETSPECTIVE AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE OR ANY THIRD PARTY AS A
 * RESULT OF USING OR DISTRIBUTING THE SOFTWARE. IN NO EVENT WILL NETSPECTIVE OR ITS LICENSORS BE LIABLE FOR ANY LOST
 * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THE SOFTWARE, EVEN
 * IF IT HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 */
package com.netspective.sparx.console.util;

import java.lang.reflect.Method;

import javax.sql.DataSource;

import org.apache.commons.lang.exception.NestableRuntimeException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.netspective.axiom.ConnectionProviderEntry;
import com.netspective.axiom.ConnectionProviderEntryStatistics;

public class ResinDataSourcePoolStatistics implements ConnectionProviderEntryStatistics {
    private static final Log log = LogFactory.getLog(ResinDataSourcePoolStatistics.class);

    private ConnectionProviderEntry entry;
    private Method activeConnsMethod;
    private Method maxConnsMethod;
    private Method totalConnsMethod;

    public String getImplementationClassName() {
        return "com.caucho.sql.DBPool";
    }

    public int getActiveConnections() {
        try {
            return ((Integer) activeConnsMethod.invoke(entry.getDataSource(), null)).intValue();
        } catch (Exception e) {
            return -1;
        }
    }

    public ConnectionProviderEntry getConnectionProviderEntry() {
        return entry;
    }

    public int getMaxConnections() {
        try {
            return ((Integer) maxConnsMethod.invoke(entry.getDataSource(), null)).intValue();
        } catch (Exception e) {
            return -1;
        }
    }

    public int getTotalConnections() {
        try {
            return ((Integer) totalConnsMethod.invoke(entry.getDataSource(), null)).intValue();
        } catch (Exception e) {
            return -1;
        }
    }

    public void setConnectionProviderEntry(ConnectionProviderEntry entry) {
        this.entry = entry;

        if (entry != null) {
            DataSource ds = entry.getDataSource();
            if (ds == null)
                throw new RuntimeException("DataSource is NULL");

            try {
                activeConnsMethod = ds.getClass().getMethod("getActiveConnections", null);
                maxConnsMethod = ds.getClass().getMethod("getMaxConnections", null);
                totalConnsMethod = ds.getClass().getMethod("getTotalConnections", null);
            } catch (Exception e) {
                throw new NestableRuntimeException(e);
            }
        }
    }
}