org.apache.bookkeeper.replication.ReplicationEnableCb Maven / Gradle / Ivy
/*
*
* 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.bookkeeper.replication;
import java.util.concurrent.CountDownLatch;
import org.apache.bookkeeper.proto.BookkeeperInternalCallbacks.GenericCallback;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Callback which is getting notified when the replication process is enabled.
*/
public class ReplicationEnableCb implements GenericCallback {
private static final Logger LOG = LoggerFactory
.getLogger(ReplicationEnableCb.class);
private final CountDownLatch latch = new CountDownLatch(1);
@Override
public void operationComplete(int rc, Void result) {
latch.countDown();
if (LOG.isDebugEnabled()) {
LOG.debug("Automatic ledger re-replication is enabled");
}
}
/**
* This is a blocking call and causes the current thread to wait until the
* replication process is enabled.
*
* @throws InterruptedException
* interrupted while waiting
*/
public void await() throws InterruptedException {
if (LOG.isDebugEnabled()) {
LOG.debug("Automatic ledger re-replication is disabled. Hence waiting until its enabled!");
}
latch.await();
}
}