/*
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional information regarding
* copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the License. You may obtain a
* copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package org.apache.geode.internal.admin.remote;
import org.apache.geode.CancelException;
import org.apache.geode.DataSerializer;
import org.apache.geode.cache.CacheFactory;
import org.apache.geode.distributed.internal.DistributionManager;
import org.apache.geode.internal.Assert;
import org.apache.geode.internal.cache.CacheServerImpl;
import org.apache.geode.internal.cache.GemFireCacheImpl;
import java.io.*;
import java.util.*;
/**
* A message that is sent in response to a {@link BridgeServerResponse}. It perform an operation on
* a bridge server and returns the result to the sender.
*
* @since GemFire 4.0
*/
public final class BridgeServerResponse extends AdminResponse {
/** Information about the bridge server that was operated on */
private RemoteBridgeServer bridgeInfo;
/** An exception thrown while performing the operation */
private Exception exception;
////////////////////// Static Methods //////////////////////
/**
* Creates a <code>BridgeServerResponse</code> in response to the given request.
*/
static BridgeServerResponse create(DistributionManager dm, BridgeServerRequest request) {
BridgeServerResponse m = new BridgeServerResponse();
m.setRecipient(request.getSender());
try {
GemFireCacheImpl cache = (GemFireCacheImpl) CacheFactory.getInstanceCloseOk(dm.getSystem());
if (request.getCacheId() != System.identityHashCode(cache)) {
m.bridgeInfo = null;
} else {
int operation = request.getOperation();
switch (operation) {
case BridgeServerRequest.ADD_OPERATION: {
CacheServerImpl bridge = (CacheServerImpl) cache.addCacheServer();
m.bridgeInfo = new RemoteBridgeServer(bridge);
break;
}
case BridgeServerRequest.INFO_OPERATION: {
int id = request.getBridgeId();
// Note that since this is only an informational request
// it is not necessary to synchronize on allBridgeServersLock
for (Iterator iter = cache.getCacheServers().iterator(); iter.hasNext();) {
CacheServerImpl bridge = (CacheServerImpl) iter.next();
if (System.identityHashCode(bridge) == id) {
m.bridgeInfo = new RemoteBridgeServer(bridge);
break;
} else {
m.bridgeInfo = null;
}
}
break;
}
case BridgeServerRequest.START_OPERATION: {
RemoteBridgeServer config = request.getBridgeInfo();
for (Iterator iter = cache.getCacheServers().iterator(); iter.hasNext();) {
CacheServerImpl bridge = (CacheServerImpl) iter.next();
if (System.identityHashCode(bridge) == config.getId()) {
bridge.configureFrom(config);
bridge.start();
m.bridgeInfo = new RemoteBridgeServer(bridge);
break;
} else {
m.bridgeInfo = null;
}
}
break;
}
case BridgeServerRequest.STOP_OPERATION: {
RemoteBridgeServer config = request.getBridgeInfo();
for (Iterator iter = cache.getCacheServers().iterator(); iter.hasNext();) {
CacheServerImpl bridge = (CacheServerImpl) iter.next();
if (System.identityHashCode(bridge) == config.getId()) {
bridge.stop();
m.bridgeInfo = new RemoteBridgeServer(bridge);
break;
} else {
m.bridgeInfo = null;
}
}
break;
}
default:
Assert.assertTrue(false, "Unknown bridge server operation: " + operation);
}
}
} catch (CancelException ex) {
m.bridgeInfo = null;
} catch (Exception ex) {
m.exception = ex;
m.bridgeInfo = null;
}
return m;
}
////////////////////// Instance Methods //////////////////////
/**
* Returns information about the bridge operated on
*/
public RemoteBridgeServer getBridgeInfo() {
return this.bridgeInfo;
}
/**
* Returns an exception that was thrown while processing the request.
*/
public Exception getException() {
return this.exception;
}
public int getDSFID() {
return BRIDGE_SERVER_RESPONSE;
}
@Override
public void toData(DataOutput out) throws IOException {
super.toData(out);
DataSerializer.writeObject(this.bridgeInfo, out);
DataSerializer.writeObject(this.exception, out);
}
@Override
public void fromData(DataInput in) throws IOException, ClassNotFoundException {
super.fromData(in);
this.bridgeInfo = (RemoteBridgeServer) DataSerializer.readObject(in);
this.exception = (Exception) DataSerializer.readObject(in);
}
}