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package com.sun.enterprise.util.cluster;

import com.sun.enterprise.config.serverbeans.Node;
import com.sun.enterprise.util.StringUtils;

/**
 * Why go through the painful process of creating Paths and hard-coding in filenames
 * in more than one place?  Let's do it in here and only in here
 * @author Byron Nevins
 */
public final class Paths {
    public final static String DAS_PROPS_FILENAME =  "das.properties";
    public final static String DAS_PROPS_SUBPATH =  "agent/config/" + DAS_PROPS_FILENAME;

    // TODO: the Node class ought to do this!
    public final static String getNodesDir(final Node node) {
        if (node == null) // don't do that!
            throw new NullPointerException();

        String nodesDir = node.getNodeDirAbsoluteUnixStyle();

        if (nodesDir == null)
            nodesDir = node.getInstallDirUnixStyle() + "/glassfish/nodes";

        return nodesDir;
    }

    public final static String getNodeDir(final Node node) {
        return getNodesDir(node) + "/" + node.getName();
    }

    public final static String getDasPropsPath(final Node node) {
        return getNodeDir(node) + "/" + DAS_PROPS_SUBPATH;
    }

    public static String getInstanceDirPath(final Node node, final String instanceName) {
        if (!StringUtils.ok(instanceName))
            throw new IllegalArgumentException(); // don't do that!

        return getNodeDir(node) + "/" + instanceName;
    }

    private Paths() {
        // all static methods
    }
}