Package com.googlecode.psiprobe

Source Code of com.googlecode.psiprobe.Tomcat55ContainerAdaptor

/*
* Licensed under the GPL License.  You may not use this file except in
* compliance with the License.  You may obtain a copy of the License at
*
*     http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
*
* THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
package com.googlecode.psiprobe;

import java.io.File;
import java.net.URL;
import java.util.List;
import java.util.Arrays;
import javax.management.MBeanServer;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import org.apache.catalina.Container;
import org.apache.catalina.Context;
import org.apache.catalina.Engine;
import org.apache.catalina.Host;
import org.apache.catalina.Lifecycle;
import org.apache.catalina.Valve;
import org.apache.catalina.Wrapper;
import org.apache.commons.modeler.Registry;

public class Tomcat55ContainerAdaptor extends AbstractTomcatContainer {

    private Host host;
    private ObjectName deployerOName;
    private MBeanServer mBeanServer;
    private Valve valve = new Tomcat55AgentValve();


    public void setWrapper(Wrapper wrapper) {
        if (wrapper != null) {
            host = (Host) wrapper.getParent().getParent();
            try {
                deployerOName = new ObjectName(host.getParent().getName() + ":type=Deployer,host=" + host.getName());
            } catch (MalformedObjectNameException e) {
                // do nothing here
            }
            host.getPipeline().addValve(valve);
            mBeanServer = Registry.getRegistry(null, null).getMBeanServer();
        } else if (host != null) {
            host.getPipeline().removeValve(valve);
        }
    }

    public boolean canBoundTo(String binding) {
        return binding != null && (binding.startsWith("Apache Tomcat/5.5"));
    }

    protected Context findContextInternal(String name) {
        return (Context) host.findChild(name);
    }

    public List findContexts() {
        Container[] containers = host.findChildren();
        return Arrays.asList(containers);
    }

    public void stop(String name) throws Exception {
        Context ctx = findContext(name);
        if (ctx != null) {
            ((Lifecycle) ctx).stop();
        }
    }

    public void start(String name) throws Exception {
        Context ctx = findContext(name);
        if (ctx != null) {
            ((Lifecycle) ctx).start();
        }
    }

    private void checkChanges(String name) throws Exception {
        Boolean result = (Boolean) mBeanServer.invoke(deployerOName,
                        "isServiced", new String[]{name}, new String[]{"java.lang.String"});
        if (!result.booleanValue()) {
            mBeanServer.invoke(deployerOName, "addServiced",
                    new String[]{name}, new String[]{"java.lang.String"});
            try {
                mBeanServer.invoke(deployerOName, "check",
                        new String[]{name}, new String[]{"java.lang.String"});
            } finally {
                mBeanServer.invoke(deployerOName, "removeServiced",
                        new String[]{name}, new String[]{"java.lang.String"});
            }
        }
    }

    public void removeInternal(String name) throws Exception {
        checkChanges(name);
    }

    public void installWar(String name, URL url) throws Exception {
        checkChanges(name);
    }

    public void installContextInternal(String name, File config) throws Exception {
        checkChanges(name);
    }

    public File getAppBase() {
        File base = new File(host.getAppBase());
        if (! base.isAbsolute()) {
            base = new File(System.getProperty("catalina.base"), host.getAppBase());
        }
        return base;
    }

    public String getConfigBase() {
        File configBase = new File(System.getProperty("catalina.base"), "conf");
        Container container = host;
        Container host = null;
        Container engine = null;
        while (container != null) {
            if (container instanceof Host) {
                host = container;
            }
            if (container instanceof Engine) {
                engine = container;
            }
            container = container.getParent();
        }
        if (engine != null) {
            configBase = new File(configBase, engine.getName());
        }
        if (host != null) {
            configBase = new File(configBase, host.getName());
        }
        return configBase.getAbsolutePath();
    }

    public Object getLogger(Context context) {
        return context.getLogger();
    }

    public String getHostName() {
        return host.getName();
    }

    public String getName() {
        return host.getParent().getName();
    }
}
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