/* * 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.cassandra.service; import java.net.InetAddress; import java.util.Arrays; import java.util.Collection; import java.util.Collections; import java.util.concurrent.atomic.AtomicInteger; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.apache.cassandra.db.Keyspace; import org.apache.cassandra.net.MessageIn; import org.apache.cassandra.db.ConsistencyLevel; import org.apache.cassandra.db.WriteType; /** * Handles blocking writes for ONE, ANY, TWO, THREE, QUORUM, and ALL consistency levels. */ public class WriteResponseHandler extends AbstractWriteResponseHandler { protected static final Logger logger = LoggerFactory.getLogger(WriteResponseHandler.class); protected final AtomicInteger responses; public WriteResponseHandler(Collection<InetAddress> writeEndpoints, Collection<InetAddress> pendingEndpoints, ConsistencyLevel consistencyLevel, Keyspace keyspace, Runnable callback, WriteType writeType) { super(keyspace, writeEndpoints, pendingEndpoints, consistencyLevel, callback, writeType); responses = new AtomicInteger(totalBlockFor()); } public WriteResponseHandler(InetAddress endpoint, WriteType writeType, Runnable callback) { this(Arrays.asList(endpoint), Collections.<InetAddress>emptyList(), ConsistencyLevel.ONE, null, callback, writeType); } public WriteResponseHandler(InetAddress endpoint, WriteType writeType) { this(endpoint, writeType, null); } public void response(MessageIn m) { if (responses.decrementAndGet() == 0) signal(); } protected int ackCount() { return totalBlockFor() - responses.get(); } public boolean isLatencyForSnitch() { return false; } }