Add ROADM application

Change-Id: I50fa93cf3a69122f6434b46e831b254771159294
diff --git a/apps/roadm/src/main/java/org/onosproject/roadm/DistributedRoadmStore.java b/apps/roadm/src/main/java/org/onosproject/roadm/DistributedRoadmStore.java
new file mode 100644
index 0000000..597ac2e
--- /dev/null
+++ b/apps/roadm/src/main/java/org/onosproject/roadm/DistributedRoadmStore.java
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2016-present 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.roadm;
+
+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.DeviceId;
+import org.onosproject.net.PortNumber;
+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.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Manages the port target powers for ROADM devices.
+ */
+@Component(immediate = true)
+@Service
+public class DistributedRoadmStore implements RoadmStore {
+    private static Logger log = LoggerFactory.getLogger(DistributedRoadmStore.class);
+
+    private ConsistentMap<DeviceId, Map<PortNumber, Long>> distPowerMap;
+    private Map<DeviceId, Map<PortNumber, Long>> powerMap;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected StorageService storageService;
+
+    @Activate
+    public void activate() {
+        distPowerMap = storageService.<DeviceId, Map<PortNumber, Long>>consistentMapBuilder()
+                .withName("onos-roadm-distributed-store")
+                .withSerializer(Serializer.using(KryoNamespaces.API))
+                .build();
+        powerMap = distPowerMap.asJavaMap();
+
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        log.info("Stopped");
+    }
+
+    // Add a map to the store for a device if not already added.
+    // Powers still need to be initialized with calls to setTargetPower().
+    @Override
+    public void addDevice(DeviceId deviceId) {
+        powerMap.putIfAbsent(deviceId, new HashMap<>());
+        log.info("Initializing {}", deviceId);
+    }
+
+    // Returns true if Map for device exists in ConsistentMap
+    @Override
+    public boolean deviceAvailable(DeviceId deviceId) {
+        return powerMap.get(deviceId) != null;
+    }
+
+
+    @Override
+    public void setTargetPower(DeviceId deviceId, PortNumber portNumber, long targetPower) {
+        Map<PortNumber, Long> portMap = powerMap.get(deviceId);
+        if (portMap != null) {
+            portMap.put(portNumber, targetPower);
+            powerMap.put(deviceId, portMap);
+        } else {
+            log.info("Device {} not found in store", deviceId);
+        }
+    }
+
+    @Override
+    public Long getTargetPower(DeviceId deviceId, PortNumber portNumber) {
+        Map<PortNumber, Long> portMap = powerMap.get(deviceId);
+        if (portMap != null) {
+            return portMap.get(portNumber);
+        }
+        return null;
+    }
+}