added FlowObjectiveService to act as an objective manager between applications and drivers
Change-Id: I4dc44db8bafae8a55b7663895c87b1b08645637f
diff --git a/core/net/src/main/java/org/onosproject/net/flowobjective/impl/FlowObjectiveManager.java b/core/net/src/main/java/org/onosproject/net/flowobjective/impl/FlowObjectiveManager.java
new file mode 100644
index 0000000..49d9696
--- /dev/null
+++ b/core/net/src/main/java/org/onosproject/net/flowobjective/impl/FlowObjectiveManager.java
@@ -0,0 +1,163 @@
+/*
+ * 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.net.flowobjective.impl;
+
+import com.google.common.collect.Maps;
+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.osgi.DefaultServiceDirectory;
+import org.onlab.osgi.ServiceDirectory;
+import org.onosproject.cluster.ClusterService;
+import org.onosproject.mastership.MastershipEvent;
+import org.onosproject.mastership.MastershipListener;
+import org.onosproject.mastership.MastershipService;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.behaviour.Pipeliner;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.net.driver.Driver;
+import org.onosproject.net.driver.DriverHandler;
+import org.onosproject.net.driver.DriverService;
+import org.onosproject.net.flowobjective.FilteringObjective;
+import org.onosproject.net.flowobjective.FlowObjectiveService;
+import org.onosproject.net.flowobjective.ForwardingObjective;
+import org.onosproject.net.flowobjective.NextObjective;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Collection;
+import java.util.Map;
+import java.util.concurrent.Future;
+
+import static com.google.common.base.Preconditions.checkState;
+
+/**
+ * Created by ash on 07/04/15.
+ */
+@Component(immediate = true)
+@Service
+public class FlowObjectiveManager implements FlowObjectiveService {
+
+ private final Logger log = LoggerFactory.getLogger(getClass());
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected DriverService driverService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected DeviceService deviceService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected MastershipService mastershipService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected ClusterService clusterService;
+
+ protected ServiceDirectory serviceDirectory = new DefaultServiceDirectory();
+
+ private MastershipListener mastershipListener = new InnerMastershipListener();
+
+ private Map<DeviceId, DriverHandler> driverHandlers =
+ Maps.newConcurrentMap();
+
+ @Activate
+ protected void activate() {
+ mastershipService.addListener(mastershipListener);
+ log.info("Started");
+ }
+
+ @Deactivate
+ protected void deactivate() {
+ mastershipService.removeListener(mastershipListener);
+ log.info("Stopped");
+ }
+
+ @Override
+ public Future<Boolean> filter(DeviceId deviceId,
+ Collection<FilteringObjective> filterObjectives) {
+ DriverHandler handler = driverHandlers.get(deviceId);
+ checkState(handler != null, "Driver not initialized");
+
+ Pipeliner pipe = handler.behaviour(Pipeliner.class);
+
+ return pipe.filter(filterObjectives);
+ }
+
+ @Override
+ public Future<Boolean> forward(DeviceId deviceId,
+ Collection<ForwardingObjective> forwardingObjectives) {
+ DriverHandler handler = driverHandlers.get(deviceId);
+ checkState(handler != null, "Driver not initialized");
+
+ Pipeliner pipe = handler.behaviour(Pipeliner.class);
+
+ return pipe.forward(forwardingObjectives);
+ }
+
+ @Override
+ public Future<Boolean> next(DeviceId deviceId,
+ Collection<NextObjective> nextObjectives) {
+ DriverHandler handler = driverHandlers.get(deviceId);
+ checkState(handler != null, "Driver not initialized");
+
+ Pipeliner pipe = handler.behaviour(Pipeliner.class);
+
+ return pipe.next(nextObjectives);
+ }
+
+ private class InnerMastershipListener implements MastershipListener {
+ @Override
+ public void event(MastershipEvent event) {
+ switch (event.type()) {
+
+ case MASTER_CHANGED:
+ //TODO: refactor this into a method
+ if (event.roleInfo().master().equals(
+ clusterService.getLocalNode().id())) {
+ DriverHandler handler = lookupDriver(event.subject());
+ if (handler != null) {
+ Pipeliner pipe = handler.behaviour(Pipeliner.class);
+ pipe.init(event.subject(), serviceDirectory);
+ driverHandlers.put(event.subject(), handler);
+ log.info("Driver {} bound to device {}",
+ handler.data().type().name(), event.subject());
+ } else {
+ log.error("No driver for device {}", event.subject());
+ }
+
+ }
+
+ break;
+ case BACKUPS_CHANGED:
+ break;
+ default:
+ log.warn("Unknown mastership type {}", event.type());
+ }
+ }
+
+ private DriverHandler lookupDriver(DeviceId deviceId) {
+ Device device = deviceService.getDevice(deviceId);
+
+ Driver driver = driverService.getDriver(device.manufacturer(),
+ device.hwVersion(), device.swVersion());
+
+ return driverService.createHandler(driver.name(), deviceId);
+ }
+ }
+}