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/*
* Copyright (c) 2012 Eike Stepper (Berlin, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.emf.cdo.examples.client.offline.nodes;
import org.eclipse.net4j.util.container.Container;
import org.eclipse.net4j.util.io.IORuntimeException;
import org.eclipse.net4j.util.io.IOUtil;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
/**
* @author Eike Stepper
*/
public class NodeManager extends Container<Object>
{
private static final String NODE_PROPERTIES = "node.properties";
private final Map<String, Node> nodes = new HashMap<String, Node>();
private final NodeType.Client client = new NodeType.Client(this);
private final NodeType.NormalRepository normalRepository = new NodeType.NormalRepository(this);
private final NodeType.FailoverRepository failoverRepository = new NodeType.FailoverRepository(this);
private final NodeType.FailoverMonitor failoverMonitor = new NodeType.FailoverMonitor(this);
private final NodeType[] elements = { client, normalRepository, failoverRepository, failoverMonitor };
private final File root;
public NodeManager(File root)
{
this.root = root;
if (!root.exists())
{
root.mkdirs();
}
if (!root.isDirectory())
{
throw new IllegalStateException("Problem with root folder: " + root);
}
List<Node> result = new ArrayList<Node>();
for (File folder : root.listFiles())
{
if (folder.isDirectory())
{
Node node = loadNode(folder);
if (node != null)
{
result.add(node);
}
}
}
activate();
}
private Node loadNode(File folder)
{
Properties properties = loadProperties(folder);
if (properties != null)
{
String typeName = properties.getProperty(NodeType.TYPE_PROPERTY);
for (NodeType nodeType : elements)
{
if (nodeType.getTypeName().equals(typeName))
{
Node node = new Node(nodeType, properties);
return addNode(node);
}
}
}
return null;
}
private Properties loadProperties(File folder)
{
File file = new File(folder, NODE_PROPERTIES);
if (file.isFile())
{
InputStream in = null;
try
{
in = new FileInputStream(file);
Properties properties = new Properties();
properties.load(in);
return properties;
}
catch (IOException ex)
{
throw new IORuntimeException(ex);
}
finally
{
IOUtil.close(in);
}
}
return null;
}
public File getRoot()
{
return root;
}
public Node getNode(String name)
{
return nodes.get(name);
}
public Node[] getNodes()
{
Node[] array = nodes.values().toArray(new Node[nodes.size()]);
Arrays.sort(array);
return array;
}
@Override
public boolean isEmpty()
{
return false;
}
public NodeType[] getElements()
{
return elements;
}
Node createNode(NodeType nodeType)
{
Node node = new Node(nodeType);
saveNode(node);
return addNode(node);
}
void saveNode(Node node)
{
OutputStream out = null;
try
{
File folder = node.getFolder();
folder.mkdirs();
File file = new File(folder, NODE_PROPERTIES);
out = new FileOutputStream(file);
node.getSettings().store(out, "Node Settings");
}
catch (IOException ex)
{
throw new IORuntimeException(ex);
}
finally
{
IOUtil.close(out);
}
}
private Node addNode(Node node)
{
nodes.put(node.getName(), node);
node.getType().addElement(node);
return node;
}
}
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