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-rw-r--r--framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultAtomicValue.java138
1 files changed, 0 insertions, 138 deletions
diff --git a/framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultAtomicValue.java b/framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultAtomicValue.java
deleted file mode 100644
index e8c93f31..00000000
--- a/framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/consistent/impl/DefaultAtomicValue.java
+++ /dev/null
@@ -1,138 +0,0 @@
-/*
- * 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.AtomicValue;
-import org.onosproject.store.service.AtomicValueEvent;
-import org.onosproject.store.service.AtomicValueEventListener;
-import org.onosproject.store.service.ConsistentMap;
-import org.onosproject.store.service.MapEvent;
-import org.onosproject.store.service.MapEventListener;
-import org.onosproject.store.service.Serializer;
-import org.onosproject.store.service.Versioned;
-
-import java.util.Set;
-import java.util.concurrent.CopyOnWriteArraySet;
-
-/**
- * Default implementation of AtomicValue.
- *
- * @param <V> value type
- */
-public class DefaultAtomicValue<V> implements AtomicValue<V> {
-
- private final Set<AtomicValueEventListener<V>> listeners = new CopyOnWriteArraySet<>();
- private final ConsistentMap<String, byte[]> valueMap;
- private final String name;
- private final Serializer serializer;
- private final MapEventListener<String, byte[]> mapEventListener = new InternalMapEventListener();
- private final MeteringAgent monitor;
-
- private static final String COMPONENT_NAME = "atomicValue";
- private static final String GET = "get";
- private static final String GET_AND_SET = "getAndSet";
- private static final String COMPARE_AND_SET = "compareAndSet";
-
- public DefaultAtomicValue(ConsistentMap<String, byte[]> valueMap,
- String name,
- boolean meteringEnabled,
- Serializer serializer) {
- this.valueMap = valueMap;
- this.name = name;
- this.serializer = serializer;
- this.monitor = new MeteringAgent(COMPONENT_NAME, name, meteringEnabled);
- }
-
- @Override
- public boolean compareAndSet(V expect, V update) {
- final MeteringAgent.Context newTimer = monitor.startTimer(COMPARE_AND_SET);
- try {
- if (expect == null) {
- if (update == null) {
- return true;
- }
- return valueMap.putIfAbsent(name, serializer.encode(update)) == null;
- } else {
- if (update == null) {
- return valueMap.remove(name, serializer.encode(expect));
- }
- return valueMap.replace(name, serializer.encode(expect), serializer.encode(update));
- }
- } finally {
- newTimer.stop(null);
- }
- }
-
- @Override
- public V get() {
- final MeteringAgent.Context newTimer = monitor.startTimer(GET);
- try {
- Versioned<byte[]> rawValue = valueMap.get(name);
- return rawValue == null ? null : serializer.decode(rawValue.value());
- } finally {
- newTimer.stop(null);
- }
- }
-
- @Override
- public V getAndSet(V value) {
- final MeteringAgent.Context newTimer = monitor.startTimer(GET_AND_SET);
- try {
- Versioned<byte[]> previousValue = value == null ?
- valueMap.remove(name) : valueMap.put(name, serializer.encode(value));
- return previousValue == null ? null : serializer.decode(previousValue.value());
- } finally {
- newTimer.stop(null);
- }
- }
-
- @Override
- public void set(V value) {
- getAndSet(value);
- }
-
- @Override
- public void addListener(AtomicValueEventListener<V> listener) {
- synchronized (listeners) {
- if (listeners.add(listener)) {
- if (listeners.size() == 1) {
- valueMap.addListener(mapEventListener);
- }
- }
- }
- }
-
- @Override
- public void removeListener(AtomicValueEventListener<V> listener) {
- synchronized (listeners) {
- if (listeners.remove(listener)) {
- if (listeners.size() == 0) {
- valueMap.removeListener(mapEventListener);
- }
- }
- }
- }
-
- private class InternalMapEventListener implements MapEventListener<String, byte[]> {
-
- @Override
- public void event(MapEvent<String, byte[]> mapEvent) {
- V newValue = mapEvent.type() == MapEvent.Type.REMOVE ? null : serializer.decode(mapEvent.value().value());
- AtomicValueEvent<V> atomicValueEvent = new AtomicValueEvent<>(name, AtomicValueEvent.Type.UPDATE, newValue);
- listeners.forEach(l -> l.event(atomicValueEvent));
- }
- }
-}