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/*******************************************************************************
* Copyright (c) 2014 Wind River Systems, Inc. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.internal.services.remote;
import java.io.IOException;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.tcf.core.Command;
import org.eclipse.tcf.protocol.IChannel;
import org.eclipse.tcf.protocol.IToken;
import org.eclipse.tcf.protocol.JSON;
import org.eclipse.tcf.services.IMemoryMap;
import org.eclipse.tcf.util.TCFMemoryRegion;
public class MemoryMapProxy implements IMemoryMap {
private final IChannel channel;
private final Map<MemoryMapListener,IChannel.IEventListener> listeners =
new HashMap<MemoryMapListener,IChannel.IEventListener>();
public MemoryMapProxy(IChannel channel) {
this.channel = channel;
}
public String getName() {
return NAME;
}
public IToken get(String id, final DoneGet done) {
return new Command(channel, this, "get", new Object[]{ id }) {
@Override
public void done(Exception error, Object[] args) {
MemoryRegion[] map = null;
if (error == null) {
assert args.length == 2;
error = toError(args[0]);
map = toMemoryMap(args[1]);
}
done.doneGet(token, error, map);
}
}.token;
}
public IToken set(String id, MemoryRegion[] map, final DoneSet done) {
return new Command(channel, this, "set", new Object[]{ id, map }) {
@Override
public void done(Exception error, Object[] args) {
if (error == null) {
assert args.length == 1;
error = toError(args[0]);
}
done.doneSet(token, error);
}
}.token;
}
@SuppressWarnings("unchecked")
private MemoryRegion[] toMemoryMap(Object o) {
if (o == null) return null;
int i = 0;
Collection<Object> c = (Collection<Object>)o;
MemoryRegion[] map = new MemoryRegion[c.size()];
for (Object x : c) map[i++] = toMemoryRegion(x);
return map;
}
@SuppressWarnings("unchecked")
private MemoryRegion toMemoryRegion(Object o) {
if (o == null) return null;
return new TCFMemoryRegion((Map<String,Object>)o);
}
public void addListener(final MemoryMapListener listener) {
IChannel.IEventListener l = new IChannel.IEventListener() {
public void event(String name, byte[] data) {
try {
Object[] args = JSON.parseSequence(data);
if (name.equals("changed")) {
assert args.length == 1;
listener.changed((String)args[0]);
}
else {
throw new IOException("Memory Map service: unknown event: " + name);
}
}
catch (Throwable x) {
channel.terminate(x);
}
}
};
channel.addEventListener(this, l);
listeners.put(listener, l);
}
public void removeListener(MemoryMapListener listener) {
IChannel.IEventListener l = listeners.remove(listener);
if (l != null) channel.removeEventListener(this, l);
}
static {
JSON.addObjectWriter(MemoryRegion.class, new JSON.ObjectWriter<MemoryRegion>() {
public void write(MemoryRegion r) throws IOException {
JSON.writeObject(r.getProperties());
}
});
}
}
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