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package org.glassfish.deployment.admin;

import com.sun.enterprise.admin.util.ClusterOperationUtil;
import com.sun.enterprise.util.io.FileUtils;
import com.sun.enterprise.config.serverbeans.Cluster;
import com.sun.enterprise.config.serverbeans.Domain;
import java.util.Collections;
import java.util.logging.Logger;
import java.util.logging.Level;
import org.glassfish.api.ActionReport;
import org.glassfish.api.admin.AdminCommand;
import org.glassfish.api.admin.AdminCommandContext;
import org.glassfish.api.admin.FailurePolicy;
import org.glassfish.api.admin.ParameterMap;
import org.glassfish.api.admin.ServerEnvironment;
import org.glassfish.api.deployment.OpsParams;
import org.glassfish.internal.deployment.Deployment;
import org.glassfish.common.util.admin.ParameterMapExtractor;
import org.jvnet.hk2.component.Habitat;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.io.File;
import java.io.IOException;

/**
 * Utility methods useful from deployment-related commands.
 *
 * @author Tim Quinn
 */
public class DeploymentCommandUtils {

    final private static String COPY_IN_PLACE_ARCHIVE_PROP_NAME = "copy.inplace.archive";

    /**
     * Replicates an enable or disable command to all instances in the cluster
     * of which the target is a member.  If the target is not cluster member
     * this method is a no-op.
     * @param commandName name of the command to replicate to cluster instances
     * @param domain domain containing the relevant configuration
     * @param target name of the target being enabled or disabled
     * @param appName name of the application being enabled or disabled
     * @param habitat hk2 habitat
     * @param context command context passed to the running enable or disable command 
     * @param command command object
     * @return
     */
    public static ActionReport.ExitCode replicateEnableDisableToContainingCluster(
            final String commandName,
            final Domain domain,
            final String target,
            final String appName,
            final Habitat habitat,
            final AdminCommandContext context,
            final AdminCommand command) throws IllegalArgumentException, IllegalAccessException {
        /*
         * If the target is a cluster instance, the DAS will broadcast the command
         * to all instances in the cluster so they can all update their configs.
         */
        final Cluster containingCluster = domain.getClusterForInstance(target);
        if (containingCluster != null) {
            final ParameterMapExtractor extractor = new ParameterMapExtractor(command);
            final ParameterMap pMap = extractor.extract(Collections.EMPTY_LIST);
            pMap.set("DEFAULT", appName);

            return ClusterOperationUtil.replicateCommand(
                    commandName,
                    FailurePolicy.Error,
                    FailurePolicy.Warn,
                    FailurePolicy.Ignore,
                    containingCluster.getInstances(),
                    context,
                    pMap,
                    habitat);
        }
        return ActionReport.ExitCode.SUCCESS;
    }

    public static String getLocalHostName() {
        String defaultHostName = "localhost";
        try {
            InetAddress host = InetAddress.getLocalHost();
            defaultHostName = host.getCanonicalHostName();
        } catch(UnknownHostException uhe) {
           // ignore
        }
        return defaultHostName;
    }

    public static String getTarget(ParameterMap parameters, OpsParams.Origin origin, Deployment deployment) {
        String appName = parameters.getOne("DEFAULT");
        String targetName = deployment.getDefaultTarget(appName, origin);
        parameters.set("target", targetName);
        return targetName;
    }

    public static File renameUploadedFileOrCopyInPlaceFile(
            final File finalUploadDir,
            final File fileParam,
            final Logger logger,
            ServerEnvironment env) throws IOException {
        if (fileParam == null) {
            return null;
        }
        /*
         * If the fileParam resides within the applications directory then
         * it has been uploaded.  In that case, rename it.
         */
        final File appsDir = env.getApplicationRepositoryPath();

        /*
         * The default answer is the in-place file, to handle the
         * directory-deployment case or the in-place archive case if we ae
         * not copying the in-place archive.
         */
        File result = fileParam;

        if ( ! fileParam.isDirectory() && ! appsDir.toURI().relativize(fileParam.toURI()).isAbsolute()) {
            /*
             * The file lies within the apps directory, so it was
             * uploaded.
             */
            result = new File(finalUploadDir, fileParam.getName());
            FileUtils.renameFile(fileParam, result);
            if ( ! result.setLastModified(fileParam.lastModified())) {
                    logger.log(Level.FINE, "In renaming {0} to {1} could not setLastModified; continuing",
                            new Object[] {fileParam.getAbsolutePath(),
                                result.getAbsolutePath()
                            });
            }
        } else {
            final boolean copyInPlaceArchive = Boolean.valueOf(
                    System.getProperty(COPY_IN_PLACE_ARCHIVE_PROP_NAME, "true"));
            if ( ! fileParam.isDirectory() && copyInPlaceArchive) {
                /*
                 * The file was not uploaded and the in-place file is not a directory,
                 * so copy the archive to the permanent location.
                 */
                final long startTime = System.currentTimeMillis();
                result = new File(finalUploadDir, fileParam.getName());
                FileUtils.copy(fileParam, result);
                if ( ! result.setLastModified(fileParam.lastModified())) {
                    logger.log(Level.FINE, "Could not set lastModified for {0}; continuing",
                            result.getAbsolutePath());
                }
                if (logger.isLoggable(Level.FINE)) {
                    logger.log(Level.FINE, "*** In-place archive copy of {0} took {1} ms",
                            new Object[]{
                                fileParam.getAbsolutePath(),
                                System.currentTimeMillis() - startTime});
                }
            }
        }
        return result;
    }

}