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 * and Distribution License("CDDL") (collectively, the "License").  You
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package com.sun.enterprise.v3.admin.cluster;

import com.sun.enterprise.config.serverbeans.Node;
import org.glassfish.internal.api.ServerContext;
import com.sun.enterprise.util.io.InstanceDirs;


import java.io.File;
import java.io.IOException;


final class InstanceDirUtils{
    Node node;
    ServerContext serverContext;


    InstanceDirUtils(Node node, ServerContext serverContext){
        this.node = node;
        this.serverContext = serverContext;
    }

    /**
     * Returns the directory for the selected instance that is on the local
     * system.
     * @param instanceName name of the instance
     * @return File for the local file system location of the instance directory
     * @throws IOException
     */
    File getLocalInstanceDir(String instance) throws IOException {
        /*
         * Pass the node directory parent and the node directory name explicitly
         * or else InstanceDirs will not work as we want if there are multiple
         * nodes registered on this node.
         *
         * If the configuration recorded an explicit directory for the node,
         * then use it.  Otherwise, use the default node directory of
         * ${installDir}/glassfish/nodes/${nodeName}.
         */
        String nodeDir = node.getNodeDirAbsolute();
        final File nodeDirFile = (nodeDir != null ?
            new File(nodeDir) :
            defaultLocalNodeDirFile());
        InstanceDirs instanceDirs = new InstanceDirs(nodeDirFile.toString(), node.getName(), instance);
        return instanceDirs.getInstanceDir();
    }

    File defaultLocalNodeDirFile() {
        /*
         * The "nodes" directory we want to use is a child of
         * the install directory.
         *
         * The installDir field contains the installation directory which the
         * administrator specified, if s/he specified one, when the target node
         * was first created.  It is null if the administrator did not specify
         * an installation directory for the node.  In that case we should
         * use the DAS's install directory (because this method applies in the
         * local instance case).
         */
        String installDir = node.getInstallDir();
        final File nodeParentDir = (
                installDir == null
                    ? serverContext.getInstallRoot()
                    : new File(installDir, "glassfish"));
        return new File(nodeParentDir, "nodes");
    }
}