com.gemstone.gemfire.internal.tools.gfsh.app.command.task.RegionDestroyTask Maven / Gradle / Ivy
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SnappyData store based off Pivotal GemFireXD
/*
* Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
*
* Licensed 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. See accompanying
* LICENSE file.
*/
package com.gemstone.gemfire.internal.tools.gfsh.app.command.task;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import com.gemstone.gemfire.DataSerializer;
import com.gemstone.gemfire.cache.Cache;
import com.gemstone.gemfire.cache.CacheFactory;
import com.gemstone.gemfire.cache.Region;
import com.gemstone.gemfire.distributed.DistributedMember;
import com.gemstone.gemfire.internal.tools.gfsh.app.command.task.data.MemberInfo;
import com.gemstone.gemfire.internal.tools.gfsh.command.CommandResults;
import com.gemstone.gemfire.internal.tools.gfsh.command.CommandTask;
/**
* RegionDestroyTask destroys a remote region. Invoke this class using
* CommandClient.execute() or CommandClient.broadcast(). CommandClient.execute()
* destroys the specified region in the connected server and distributes it to
* other servers only if the region scope is not LOCAL.
* CommandClient.Broadcast() destroys the specified region in all peers in the
* distributed system. Both methods return CommandResults with the code set.
* Check CommandResults.getCode() to see the task execution status.
* RegionDestroyTask.SUCCESS_DESTROYED for region successfully destroyed,
* RegionDestroyTask.ERROR_REGION_DESTROY for an error creating region.
* CommandResults.getDataObject() returns MemberInfo.
*
* @author dpark
*/
public class RegionDestroyTask implements CommandTask
{
private static final long serialVersionUID = 1L;
public static final byte ERROR_REGION_DESTROY = 1;
private String regionFullPath;
public RegionDestroyTask()
{
}
/**
* Constructs a RegionDestroyTask object.
*
* @param regionFullPath
* The path of the region to destroy.
*/
public RegionDestroyTask(String regionFullPath)
{
this.regionFullPath = regionFullPath;
}
public CommandResults runTask(Object userData)
{
CommandResults results = new CommandResults();
MemberInfo memberInfo = new MemberInfo();
try {
Cache cache = CacheFactory.getAnyInstance();
Region region = cache.getRegion(regionFullPath);
DistributedMember member = cache.getDistributedSystem().getDistributedMember();
memberInfo.setHost(member.getHost());
memberInfo.setMemberId(member.getId());
memberInfo.setMemberName(cache.getName());
memberInfo.setPid(member.getProcessId());
results.setDataObject(memberInfo);
if (region == null) {
results.setCode(ERROR_REGION_DESTROY);
results.setCodeMessage("Region undefined: " + regionFullPath);
} else {
synchronized (region) {
region.destroyRegion();
}
}
} catch (Exception ex) {
results.setCode(ERROR_REGION_DESTROY);
results.setCodeMessage(ex.getMessage());
results.setException(ex);
}
return results;
}
public void fromData(DataInput input) throws IOException, ClassNotFoundException
{
regionFullPath = DataSerializer.readString(input);
}
public void toData(DataOutput output) throws IOException
{
DataSerializer.writeString(regionFullPath, output);
}
}