/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.env.deploy;
import java.io.IOException;
import java.util.TreeSet;
import java.util.logging.Logger;
import com.caucho.config.ConfigException;
import com.caucho.util.L10N;
import com.caucho.vfs.Path;
/**
* The generator for the deploy
*/
class ExpandArchiveManager
{
private static final L10N L = new L10N(ExpandArchiveManager.class);
private final String _id;
private final Path _archiveDirectory;
private final String _extension;
private TreeSet<String> _keySet = new TreeSet<String>();
private long _digest;
/**
* Creates the deploy.
*/
public ExpandArchiveManager(String id,
Path archiveDirectory,
String extension)
{
_id = id;
_archiveDirectory = archiveDirectory;
_extension = extension;
if (! extension.startsWith("."))
throw new ConfigException(L.l("deployment extension '{0}' must begin with '.'",
extension));
}
/**
* Gets the war expand directory.
*/
public Path getArchiveDirectory()
{
return _archiveDirectory;
}
/**
* Returns the location for deploying an archive with the specified name.
*
* @param name a name, without an extension
*/
public Path getArchivePath(String name)
{
return getArchiveDirectory().lookup(name + getExtension());
}
/**
* Returns the extension.
*/
public String getExtension()
{
return _extension;
}
/**
* Returns the set of deployed keys based on scanning the directory.
*/
TreeSet<String> getDeployedKeys()
{
long oldDigest = _digest;
TreeSet<String> oldKeys = _keySet;
long newDigest = getDigest();
if (oldDigest == newDigest) {
return oldKeys;
}
try {
TreeSet<String> newKeys = scanKeys();
_digest = newDigest;
_keySet = newKeys;
return newKeys;
} catch (Exception e) {
throw ConfigException.create(e);
}
}
/**
* Returns true if the deployment has modified.
*/
boolean isModified()
{
return _digest != getDigest();
}
/**
* Log the reason for modification
*/
boolean logModified(Logger log)
{
long digest = getDigest();
if (_digest != digest) {
String reason = "";
reason = this + " is modified";
log.info(reason);
return true;
}
return false;
}
/**
* Returns the digest of the expand and archive directories.
*/
private long getDigest()
{
return getArchiveDirectory().getCrc64();
}
/**
* Return the entry names for all deployed objects.
*/
private TreeSet<String> scanKeys()
throws IOException
{
TreeSet<String> keys = new TreeSet<String>();
for (String fileName : getArchiveDirectory().list()) {
if (! fileName.endsWith(getExtension()))
continue;
Path archivePath = getArchiveDirectory().lookup(fileName);
if (! archivePath.canRead())
continue;
if (archivePath.isDirectory())
continue;
int end = fileName.length() - _extension.length();
String key = fileName.substring(0, end);
keys.add(key);
}
return keys;
}
@Override
public String toString()
{
return getClass().getSimpleName() + "[" + _id + "," + getArchiveDirectory() + "]";
}
}