| /* |
| * 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 java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| import org.onosproject.store.service.AsyncAtomicCounter; |
| import org.onosproject.store.service.AtomicCounter; |
| import org.onosproject.store.service.StorageException; |
| |
| /** |
| * Default implementation for a distributed AtomicCounter backed by |
| * partitioned Raft DB. |
| * <p> |
| * The initial value will be zero. |
| */ |
| public class DefaultAtomicCounter implements AtomicCounter { |
| |
| private static final int OPERATION_TIMEOUT_MILLIS = 5000; |
| |
| private final AsyncAtomicCounter asyncCounter; |
| |
| public DefaultAtomicCounter(String name, |
| Database database, |
| boolean retryOnException, |
| ScheduledExecutorService retryExecutor) { |
| asyncCounter = new DefaultAsyncAtomicCounter(name, database, retryOnException, retryExecutor); |
| } |
| |
| @Override |
| public long incrementAndGet() { |
| return complete(asyncCounter.incrementAndGet()); |
| } |
| |
| @Override |
| public long getAndIncrement() { |
| return complete(asyncCounter.getAndIncrement()); |
| } |
| |
| @Override |
| public long getAndAdd(long delta) { |
| return complete(asyncCounter.getAndAdd(delta)); |
| } |
| |
| @Override |
| public long addAndGet(long delta) { |
| return complete(asyncCounter.getAndAdd(delta)); |
| } |
| |
| @Override |
| public long get() { |
| return complete(asyncCounter.get()); |
| } |
| |
| private static <T> T complete(CompletableFuture<T> future) { |
| try { |
| return future.get(OPERATION_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS); |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| throw new StorageException.Interrupted(); |
| } catch (TimeoutException e) { |
| throw new StorageException.Timeout(); |
| } catch (ExecutionException e) { |
| throw new StorageException(e.getCause()); |
| } |
| } |
| } |