Provide an implementation of ApplicationIdStore atop AtomicCounter and ConsistentMap + Disaable the hazelcast version
Change-Id: I26afea0fadae272baafc55edd8f6c8194b41e3a7
diff --git a/core/store/dist/src/main/java/org/onosproject/store/core/impl/ConsistentApplicationIdStore.java b/core/store/dist/src/main/java/org/onosproject/store/core/impl/ConsistentApplicationIdStore.java
new file mode 100644
index 0000000..ef17efb
--- /dev/null
+++ b/core/store/dist/src/main/java/org/onosproject/store/core/impl/ConsistentApplicationIdStore.java
@@ -0,0 +1,146 @@
+/*
+ * 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.core.impl;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+import java.util.Map;
+import java.util.Set;
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.apache.felix.scr.annotations.Service;
+import org.onlab.util.KryoNamespace;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.ApplicationIdStore;
+import org.onosproject.core.DefaultApplicationId;
+import org.onosproject.store.serializers.KryoNamespaces;
+import org.onosproject.store.service.AtomicCounter;
+import org.onosproject.store.service.ConsistentMap;
+import org.onosproject.store.service.Serializer;
+import org.onosproject.store.service.StorageService;
+import org.onosproject.store.service.Versioned;
+import org.slf4j.Logger;
+
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Maps;
+
+/**
+ * ApplicationIdStore implementation on top of {@code AtomicCounter}
+ * and {@code ConsistentMap} primitives.
+ */
+@Component(immediate = true, enabled = true)
+@Service
+public class ConsistentApplicationIdStore implements ApplicationIdStore {
+
+ private final Logger log = getLogger(getClass());
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected StorageService storageService;
+
+ private AtomicCounter appIdCounter;
+ private ConsistentMap<String, ApplicationId> registeredIds;
+ private Map<String, ApplicationId> nameToAppIdCache = Maps.newConcurrentMap();
+ private Map<Short, ApplicationId> idToAppIdCache = Maps.newConcurrentMap();
+
+ private static final Serializer SERIALIZER = Serializer.using(new KryoNamespace.Builder()
+ .register(KryoNamespaces.API)
+ .nextId(KryoNamespaces.BEGIN_USER_CUSTOM_ID)
+ .build());
+
+ @Activate
+ public void activate() {
+ appIdCounter = storageService.atomicCounterBuilder()
+ .withName("onos-app-id-counter")
+ .withPartitionsDisabled()
+ .build();
+
+ registeredIds = storageService.<String, ApplicationId>consistentMapBuilder()
+ .withName("onos-app-ids")
+ .withPartitionsDisabled()
+ .withSerializer(SERIALIZER)
+ .build();
+
+ primeAppIds();
+
+ log.info("Started");
+ }
+
+ @Deactivate
+ public void deactivate() {
+ log.info("Stopped");
+ }
+
+ @Override
+ public Set<ApplicationId> getAppIds() {
+ // TODO: Rework this when we have notification support in ConsistentMap.
+ primeAppIds();
+ return ImmutableSet.copyOf(nameToAppIdCache.values());
+ }
+
+ @Override
+ public ApplicationId getAppId(Short id) {
+ if (!idToAppIdCache.containsKey(id)) {
+ primeAppIds();
+ }
+ return idToAppIdCache.get(id);
+ }
+
+ @Override
+ public ApplicationId getAppId(String name) {
+ ApplicationId appId = nameToAppIdCache.computeIfAbsent(name, key -> {
+ Versioned<ApplicationId> existingAppId = registeredIds.get(key);
+ return existingAppId != null ? existingAppId.value() : null;
+ });
+ if (appId != null) {
+ idToAppIdCache.putIfAbsent(appId.id(), appId);
+ }
+ return appId;
+ }
+
+ @Override
+ public ApplicationId registerApplication(String name) {
+ ApplicationId appId = nameToAppIdCache.computeIfAbsent(name, key -> {
+ Versioned<ApplicationId> existingAppId = registeredIds.get(name);
+ if (existingAppId == null) {
+ int id = (int) appIdCounter.incrementAndGet();
+ DefaultApplicationId newAppId = new DefaultApplicationId(id, name);
+ existingAppId = registeredIds.putIfAbsent(name, newAppId);
+ if (existingAppId != null) {
+ return existingAppId.value();
+ } else {
+ return newAppId;
+ }
+ } else {
+ return existingAppId.value();
+ }
+ });
+ idToAppIdCache.putIfAbsent(appId.id(), appId);
+ return appId;
+ }
+
+ private void primeAppIds() {
+ registeredIds.values()
+ .stream()
+ .map(Versioned::value)
+ .forEach(appId -> {
+ nameToAppIdCache.putIfAbsent(appId.name(), appId);
+ idToAppIdCache.putIfAbsent(appId.id(), appId);
+ });
+ }
+}