/* * Copyright 2015 Open Networking Laboratory * * 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. */ package org.onosproject.store.consistent.impl; import org.onosproject.store.service.AsyncAtomicCounter; import java.util.concurrent.CompletableFuture; import static com.google.common.base.Preconditions.checkNotNull; /** * Default implementation for a distributed AsyncAtomicCounter backed by * partitioned Raft DB. *
* The initial value will be zero.
*/
public class DefaultAsyncAtomicCounter implements AsyncAtomicCounter {
private final String name;
private final Database database;
private final MeteringAgent monitor;
private static final String PRIMITIVE_NAME = "atomicCounter";
private static final String INCREMENT_AND_GET = "incrementAndGet";
private static final String GET_AND_INCREMENT = "getAndIncrement";
private static final String GET_AND_ADD = "getAndAdd";
private static final String ADD_AND_GET = "addAndGet";
private static final String GET = "get";
private static final String SET = "set";
private static final String COMPARE_AND_SET = "compareAndSet";
public DefaultAsyncAtomicCounter(String name,
Database database,
boolean meteringEnabled) {
this.name = checkNotNull(name);
this.database = checkNotNull(database);
this.monitor = new MeteringAgent(PRIMITIVE_NAME, name, meteringEnabled);
}
@Override
public CompletableFuture