1 files changed, 111 insertions, 0 deletions
diff --git a/framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/resource/impl/ConsistentIntentSetMultimap.java b/framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/resource/impl/ConsistentIntentSetMultimap.java
new file mode 100644
index 00000000..87e67215
--- /dev/null
+++ b/framework/src/onos/core/store/dist/src/main/java/org/onosproject/store/resource/impl/ConsistentIntentSetMultimap.java
@@ -0,0 +1,111 @@
+/*
+ * 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.resource.impl;
+
+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.onosproject.net.device.DeviceService;
+import org.onosproject.net.intent.IntentId;
+import org.onosproject.net.resource.device.IntentSetMultimap;
+import org.onosproject.store.serializers.KryoNamespaces;
+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 java.util.HashSet;
+import java.util.Set;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * A collection that maps Intent IDs as keys to values as Intent IDs,
+ * where each key may associated with multiple values without duplication.
+ */
+@Component(immediate = true, enabled = true)
+@Service
+public class ConsistentIntentSetMultimap implements IntentSetMultimap {
+    private final Logger log = getLogger(getClass());
+
+    private static final String INTENT_MAPPING = "IntentMapping";
+
+    private static final Serializer SERIALIZER = Serializer.using(KryoNamespaces.API);
+
+    private ConsistentMap<IntentId, Set<IntentId>> intentMapping;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected StorageService storageService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected DeviceService deviceService;
+
+    @Activate
+    public void activate() {
+        intentMapping = storageService.<IntentId, Set<IntentId>>consistentMapBuilder()
+                .withName(INTENT_MAPPING)
+                .withSerializer(SERIALIZER)
+                .build();
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        log.info("Stopped");
+    }
+
+    @Override
+    public Set<IntentId> getMapping(IntentId intentId) {
+        Versioned<Set<IntentId>> result = intentMapping.get(intentId);
+
+        if (result != null) {
+            return result.value();
+        }
+
+        return null;
+    }
+
+    @Override
+    public boolean allocateMapping(IntentId keyIntentId, IntentId valIntentId) {
+        Versioned<Set<IntentId>> versionedIntents = intentMapping.get(keyIntentId);
+
+        if (versionedIntents == null) {
+            Set<IntentId> newSet = new HashSet<>();
+            newSet.add(valIntentId);
+            intentMapping.put(keyIntentId, newSet);
+        } else {
+            versionedIntents.value().add(valIntentId);
+        }
+
+        return true;
+    }
+
+    @Override
+    public void releaseMapping(IntentId intentId) {
+        for (IntentId intent : intentMapping.keySet()) {
+            // TODO: optimize by checking for identical src & dst
+            Set<IntentId> mapping = intentMapping.get(intent).value();
+            if (mapping.remove(intentId)) {
+                return;
+            }
+        }
+    }
+
+}