ONOS-1362: Support async version of ConsistentMap that lets efficient chaining of operations
Change-Id: I672a15ba2a517db3e22f6ce8d739ca48307e6e63
diff --git a/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultConsistentMap.java b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultConsistentMap.java
new file mode 100644
index 0000000..123615c
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+++ b/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultConsistentMap.java
@@ -0,0 +1,144 @@
+/*
+ * 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.Collection;
+import java.util.Map.Entry;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+import java.util.Set;
+
+import org.onosproject.store.service.AsyncConsistentMap;
+import org.onosproject.store.service.ConsistentMap;
+import org.onosproject.store.service.ConsistentMapException;
+import org.onosproject.store.service.Serializer;
+import org.onosproject.store.service.Versioned;
+
+/**
+ * ConsistentMap implementation that is backed by a Raft consensus
+ * based database.
+ *
+ * @param <K> type of key.
+ * @param <V> type of value.
+ */
+public class DefaultConsistentMap<K, V> implements ConsistentMap<K, V> {
+
+ private static final int OPERATION_TIMEOUT_MILLIS = 5000;
+
+ private final AsyncConsistentMap<K, V> asyncMap;
+
+ public DefaultConsistentMap(String name,
+ DatabaseProxy<String, byte[]> proxy,
+ Serializer serializer) {
+ asyncMap = new DefaultAsyncConsistentMap<>(name, proxy, serializer);
+ }
+
+ @Override
+ public int size() {
+ return complete(asyncMap.size());
+ }
+
+ @Override
+ public boolean isEmpty() {
+ return complete(asyncMap.isEmpty());
+ }
+
+ @Override
+ public boolean containsKey(K key) {
+ return complete(asyncMap.containsKey(key));
+ }
+
+ @Override
+ public boolean containsValue(V value) {
+ return complete(asyncMap.containsValue(value));
+ }
+
+ @Override
+ public Versioned<V> get(K key) {
+ return complete(asyncMap.get(key));
+ }
+
+ @Override
+ public Versioned<V> put(K key, V value) {
+ return complete(asyncMap.put(key, value));
+ }
+
+ @Override
+ public Versioned<V> remove(K key) {
+ return complete(asyncMap.remove(key));
+ }
+
+ @Override
+ public void clear() {
+ complete(asyncMap.clear());
+ }
+
+ @Override
+ public Set<K> keySet() {
+ return complete(asyncMap.keySet());
+ }
+
+ @Override
+ public Collection<Versioned<V>> values() {
+ return complete(asyncMap.values());
+ }
+
+ @Override
+ public Set<Entry<K, Versioned<V>>> entrySet() {
+ return complete(asyncMap.entrySet());
+ }
+
+ @Override
+ public Versioned<V> putIfAbsent(K key, V value) {
+ return complete(asyncMap.putIfAbsent(key, value));
+ }
+
+ @Override
+ public boolean remove(K key, V value) {
+ return complete(asyncMap.remove(key, value));
+ }
+
+ @Override
+ public boolean remove(K key, long version) {
+ return complete(asyncMap.remove(key, version));
+ }
+
+ @Override
+ public boolean replace(K key, V oldValue, V newValue) {
+ return complete(asyncMap.replace(key, oldValue, newValue));
+ }
+
+ @Override
+ public boolean replace(K key, long oldVersion, V newValue) {
+ return complete(asyncMap.replace(key, oldVersion, newValue));
+ }
+
+ 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 ConsistentMapException.Interrupted();
+ } catch (TimeoutException e) {
+ throw new ConsistentMapException.Timeout();
+ } catch (ExecutionException e) {
+ throw new ConsistentMapException(e.getCause());
+ }
+ }
+}
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