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package org.glassfish.deployment.admin;

import org.glassfish.api.admin.AdminCommand;
import org.glassfish.api.admin.AdminCommandContext;
import org.glassfish.api.admin.ServerEnvironment;
import com.sun.enterprise.config.serverbeans.ApplicationRef;
import com.sun.enterprise.config.serverbeans.Server;
import com.sun.enterprise.config.serverbeans.Application;
import com.sun.enterprise.config.serverbeans.Applications;
import com.sun.enterprise.config.serverbeans.Domain;
import com.sun.enterprise.util.LocalStringManagerImpl;
import org.glassfish.api.ActionReport;
import org.glassfish.api.I18n;
import org.glassfish.api.deployment.StateCommandParameters;
import org.glassfish.api.deployment.UndeployCommandParameters;
import org.glassfish.api.deployment.archive.ReadableArchive;
import org.glassfish.api.admin.Cluster;
import org.glassfish.api.admin.RuntimeType;
import org.glassfish.internal.deployment.Deployment;
import org.glassfish.internal.deployment.ExtendedDeploymentContext;
import org.glassfish.internal.data.ApplicationInfo;
import org.glassfish.config.support.TargetType;
import org.glassfish.config.support.CommandTarget;
import org.jvnet.hk2.annotations.Inject;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.annotations.Scoped;
import org.jvnet.hk2.component.PerLookup;
import org.jvnet.hk2.config.ConfigSupport;
import org.jvnet.hk2.config.SingleConfigCode;
import org.jvnet.hk2.config.TransactionFailure;

import java.util.logging.Level;
import java.util.logging.Logger;
import java.beans.PropertyVetoException;
import java.util.Collections;
import java.util.List;

import org.glassfish.deployment.versioning.VersioningService;
import org.glassfish.deployment.versioning.VersioningException;

/**
 * Disable command
 */
@Service(name="disable")
@I18n("disable.command")
@Cluster(value={RuntimeType.DAS, RuntimeType.INSTANCE})
@Scoped(PerLookup.class)
@TargetType(value={CommandTarget.DOMAIN, CommandTarget.DAS, CommandTarget.STANDALONE_INSTANCE, CommandTarget.CLUSTER, CommandTarget.CLUSTERED_INSTANCE})
public class DisableCommand extends StateCommandParameters implements AdminCommand {

    final private static LocalStringManagerImpl localStrings = new LocalStringManagerImpl(DisableCommand.class);    

    @Inject
    ServerEnvironment env;

    @Inject
    Deployment deployment;

    @Inject
    Domain domain;

    @Inject
    Applications applications;

    @Inject(name= ServerEnvironment.DEFAULT_INSTANCE_NAME)
    protected Server server;

    @Inject
    VersioningService versioningService;

    public DisableCommand() {
        origin = Origin.unload;
    }

    /**
     * Entry point from the framework into the command execution
     * @param context context for the command.
     */
    public void execute(AdminCommandContext context) {

        final ActionReport report = context.getActionReport();
        final Logger logger = context.getLogger();

        String appName = name();

        try {
            List matchedVersions = versioningService.getMatchedVersions(appName, target);
            if (matchedVersions == Collections.EMPTY_LIST) {
                // no version matched by the expression
                // nothing to do : success
                report.setActionExitCode(ActionReport.ExitCode.SUCCESS);
                return;
            }
            String enabledVersion = versioningService.getEnabledVersion(appName, target);
            if (matchedVersions.contains(enabledVersion)) {
                // the enabled version is matched by the expression
                appName = enabledVersion;
            } else {
                // the enabled version is not matched by the expression
                // nothing to do : success
                report.setActionExitCode(ActionReport.ExitCode.SUCCESS);
                return;
            }
        } catch (VersioningException e) {
            report.failure(logger, e.getMessage());
            return;
        }

        if (!deployment.isRegistered(appName)) {
            report.setMessage(localStrings.getLocalString("application.notreg","Application {0} not registered", appName));
            report.setActionExitCode(ActionReport.ExitCode.FAILURE);
            return;
        }

        ApplicationRef ref = domain.getApplicationRefInTarget(appName, target);
        if (ref == null) {
            report.setMessage(localStrings.getLocalString("ref.not.referenced.target","Application {0} is not referenced by target {1}", appName, target));
            report.setActionExitCode(ActionReport.ExitCode.FAILURE);
            return;
        }

        if (!domain.isCurrentInstanceMatchingTarget(target, server.getName())) {
            // if the target does not match with the current instance name
            // we should just update the domain.xml and return
            try {
                deployment.updateAppEnabledAttributeInDomainXML(name(), target, false);
            } catch(TransactionFailure e) {
                logger.warning("failed to set enable attribute for " + name());
            }

            return;
        }

        ApplicationInfo appInfo = deployment.get(appName);

        try {
            UndeployCommandParameters commandParams = 
                new UndeployCommandParameters();
            commandParams.origin = this.origin;
            commandParams.name = appName;
            commandParams.target = target;
            final ExtendedDeploymentContext deploymentContext = 
                    deployment.getBuilder(logger, commandParams, report).source(appInfo.getSource()).build();
            Application application = applications.getApplication(appName);
            if (application != null) {
                deploymentContext.getAppProps().putAll(
                    application.getDeployProperties());
                deploymentContext.setModulePropsMap(
                    application.getModulePropertiesMap());
            }

            appInfo.stop(deploymentContext, deploymentContext.getLogger());
            appInfo.unload(deploymentContext);

            if (report.getActionExitCode().equals(
                ActionReport.ExitCode.SUCCESS)) {
                try {
                    deployment.updateAppEnabledAttributeInDomainXML(name(), target, false);
                } catch(TransactionFailure e) {
                    logger.warning("failed to set enable attribute for " + name());
                }
            }

        } catch(Exception e) {
            logger.log(Level.SEVERE, "Error during disabling: ", e);
            report.setActionExitCode(ActionReport.ExitCode.FAILURE);
            report.setMessage(e.getMessage());
        }
    }        
}