/*
* 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.admin.internal;
import java.io.File;
import java.util.Map;
import java.util.Set;
import org.apache.geode.cache.persistence.PersistentID;
import org.apache.geode.distributed.DistributedLockService;
import org.apache.geode.distributed.DistributedMember;
import org.apache.geode.distributed.internal.DM;
import org.apache.geode.internal.Assert;
public class BackupDataStoreHelper {
public static String LOCK_SERVICE_NAME = BackupDataStoreHelper.class.getSimpleName();
private static String LOCK_NAME = LOCK_SERVICE_NAME + "_token";
private static Object LOCK_SYNC = new Object();
@SuppressWarnings("rawtypes")
public static BackupDataStoreResult backupAllMembers(DM dm, Set recipients, File targetDir,
File baselineDir) {
FlushToDiskRequest.send(dm, recipients);
boolean abort = true;
Map<DistributedMember, Set<PersistentID>> successfulMembers;
Map<DistributedMember, Set<PersistentID>> existingDataStores;
try {
existingDataStores = PrepareBackupRequest.send(dm, recipients);
abort = false;
} finally {
successfulMembers = FinishBackupRequest.send(dm, recipients, targetDir, baselineDir, abort);
}
return new BackupDataStoreResult(existingDataStores, successfulMembers);
}
private static DistributedLockService getLockService(DM dm) {
DistributedLockService dls = DistributedLockService.getServiceNamed(LOCK_SERVICE_NAME);
if (dls == null) {
synchronized (LOCK_SYNC) {
dls = DistributedLockService.getServiceNamed(LOCK_SERVICE_NAME);
if (dls == null) {
// Create the DistributedLockService
dls = DistributedLockService.create(LOCK_SERVICE_NAME, dm.getSystem());
}
}
}
Assert.assertTrue(dls != null);
return dls;
}
public static boolean obtainLock(DM dm) {
return getLockService(dm).lock(LOCK_NAME, 0, -1);
}
public static void releaseLock(DM dm) {
getLockService(dm).unlock(LOCK_NAME);
}
}