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 * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
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 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
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 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
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package org.glassfish.web.osgi;

import com.sun.enterprise.util.io.FileUtils;
import org.glassfish.api.ActionReport;
import org.glassfish.api.deployment.DeployCommandParameters;
import org.glassfish.api.deployment.UndeployCommandParameters;
import org.glassfish.internal.deployment.Deployment;
import org.glassfish.server.ServerEnvironmentImpl;

import java.io.File;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * This is a stateful service. It is responsible for undeployment of
 * the artifact from JavaEE runtime.
 *
 * @author [email protected]
 */
public class JavaEEUndeploymentRequest
{
    private static final Logger logger =
            Logger.getLogger(JavaEEUndeploymentRequest.class.getPackage().getName());

    private Deployment deployer;
    private ServerEnvironmentImpl env;
    private ActionReport reporter;
    /**
     * Application being undeployed
     */
    private OSGiWebContainer.OSGiApplicationInfo osgiAppInfo;
    private OSGiDeploymentContextImpl dc;

    public JavaEEUndeploymentRequest(Deployment deployer,
                                     ServerEnvironmentImpl env,
                                     ActionReport reporter,
                                     OSGiWebContainer.OSGiApplicationInfo osgiAppInfo)
    {
        this.deployer = deployer;
        this.env = env;
        this.reporter = reporter;
        this.osgiAppInfo = osgiAppInfo;
    }

    public void execute()
    {
        // TODO(Sahoo): There may be side effect of creating a deployment context
        // as that leads to creation of class loaders again.
        try
        {
            dc = new OSGiDeploymentContextImpl(
                    reporter,
                    logger,
                    osgiAppInfo.appInfo.getSource(),
                    getUndeployParams(osgiAppInfo),
                    env,
                    osgiAppInfo.bundle);
        }
        catch (Exception e)
        {
            throw new RuntimeException(e); // TODO(Sahoo): Proper Exception Handling
        }

        deployer.undeploy(osgiAppInfo.appInfo.getName(), dc);
        if (!osgiAppInfo.isDirectoryDeployment)
        {
            // We can always assume dc.getSourceDir will return a valid file
            // because we would have expanded the app during deployment.
            cleanup(dc.getSourceDir());
        }
        logger.logp(Level.INFO, "JavaEEUndeploymentRequest", "undeploy",
                "Undeployed bundle {0} from {1}", new Object[]{osgiAppInfo.bundle,
                dc.getSource().getURI()});
    }

    private void cleanup(File dir)
    {
        assert (dir.isDirectory() && dir.exists());
        FileUtils.whack(dir);
        logger.logp(Level.INFO, "JavaEEUndeploymentRequest", "cleanup",
                "Deleted {0}", new Object[]{dir});
    }

    private UndeployCommandParameters getUndeployParams(
            OSGiWebContainer.OSGiApplicationInfo osgiAppInfo)
    {
        UndeployCommandParameters parameters =
                new UndeployCommandParameters();
        parameters.name = osgiAppInfo.appInfo.getName();
        parameters.origin = DeployCommandParameters.Origin.undeploy;
        return parameters;
    }

}