Upgrade packet requests to use flow objectives API.

Addressed a few issues found while using the flow objectives across a cluster:
 * Flow objectives should be installable from any node, not just the master.
   Therefore we need to ensure all nodes initialize a driver for each switch.
 * We no longer store a list of objectives that are waiting for the switch
   to arrive. If the we don't know about the switch yet we'll try a few times
   over a few seconds to find it, but after that we'll give up and report an
   error to the client.
 * Default drivers need to be available when the FlowObjectiveManager starts
   up, otherwise it is common to get flow objective requests before any
   drivers have been loaded.

Change-Id: I1c2ea6a223232402c31e8139729e4b6251ab8b0f

+/*
+ * 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.driver;
+
+/**
+ * Service capable of providing a set of default drivers.
+ */
+public interface DefaultDriverProviderService extends DriverProvider {
+}

@@ -36,7 +36,7 @@ public final class DefaultForwardingObjective implements ForwardingObjective {
     private final int timeout;
     private final ApplicationId appId;
     private final int priority;
-    private final int nextId;
+    private final Integer nextId;
     private final TrafficTreatment treatment;
     private final Operation op;
     private final Optional<ObjectiveContext> context;
@@ -46,7 +46,7 @@ public final class DefaultForwardingObjective implements ForwardingObjective {
     private DefaultForwardingObjective(TrafficSelector selector,
                                       Flag flag, boolean permanent,
                                       int timeout, ApplicationId appId,
-                                      int priority, int nextId,
+                                      int priority, Integer nextId,
                                       TrafficTreatment treatment, Operation op) {
         this.selector = selector;
         this.flag = flag;
@@ -67,7 +67,7 @@ public final class DefaultForwardingObjective implements ForwardingObjective {
     private DefaultForwardingObjective(TrafficSelector selector,
                                        Flag flag, boolean permanent,
                                        int timeout, ApplicationId appId,
-                                       int priority, int nextId,
+                                       int priority, Integer nextId,
                                        TrafficTreatment treatment,
                                        ObjectiveContext context, Operation op) {
         this.selector = selector;

@@ -41,6 +41,11 @@ public enum ObjectiveError {
     GROUPMISSING,
 
     /**
+     * The device was not available to install objectives to.
+     */
+    DEVICEMISSING,
+
+    /**
      * An unknown error occurred.
      */
     UNKNOWN

@@ -31,6 +31,7 @@ import org.onosproject.net.driver.Behaviour;
 import org.onosproject.net.driver.DefaultDriverData;
 import org.onosproject.net.driver.DefaultDriverHandler;
 import org.onosproject.net.driver.DefaultDriverProvider;
+import org.onosproject.net.driver.DefaultDriverProviderService;
 import org.onosproject.net.driver.Driver;
 import org.onosproject.net.driver.DriverAdminService;
 import org.onosproject.net.driver.DriverHandler;
@@ -62,16 +63,21 @@ public class DriverManager extends DefaultDriverProvider implements DriverAdminS
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
     protected DeviceService deviceService;
 
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected DefaultDriverProviderService defaultDriverService;
+
     private Set<DriverProvider> providers = Sets.newConcurrentHashSet();
     private Map<String, Driver> driverByKey = Maps.newConcurrentMap();
 
     @Activate
     protected void activate() {
+        registerProvider(defaultDriverService);
         log.info("Started");
     }
 
     @Deactivate
     protected void deactivate() {
+        unregisterProvider(defaultDriverService);
         log.info("Stopped");
     }
 

@@ -27,12 +27,17 @@ import org.onosproject.net.Device;
 import org.onosproject.net.device.DeviceEvent;
 import org.onosproject.net.device.DeviceListener;
 import org.onosproject.net.device.DeviceService;
-import org.onosproject.net.flow.DefaultFlowRule;
 import org.onosproject.net.flow.DefaultTrafficTreatment;
 import org.onosproject.net.flow.FlowRule;
 import org.onosproject.net.flow.FlowRuleService;
 import org.onosproject.net.flow.TrafficSelector;
 import org.onosproject.net.flow.TrafficTreatment;
+import org.onosproject.net.flowobjective.DefaultForwardingObjective;
+import org.onosproject.net.flowobjective.FlowObjectiveService;
+import org.onosproject.net.flowobjective.ForwardingObjective;
+import org.onosproject.net.flowobjective.Objective;
+import org.onosproject.net.flowobjective.ObjectiveContext;
+import org.onosproject.net.flowobjective.ObjectiveError;
 import org.onosproject.net.packet.DefaultPacketRequest;
 import org.onosproject.net.packet.OutboundPacket;
 import org.onosproject.net.packet.PacketContext;
@@ -73,6 +78,9 @@ public class PacketManager
     private CoreService coreService;
 
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    private FlowObjectiveService objectiveService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
     private DeviceService deviceService;
 
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
@@ -169,12 +177,28 @@ public class PacketManager
             return;
         }
 
-        TrafficTreatment treatment = DefaultTrafficTreatment.builder().punt().build();
-        FlowRule flow = new DefaultFlowRule(device.id(), request.selector(), treatment,
-                                            request.priority().priorityValue(),
-                                            appId, 0, true, request.tableType());
-
-        flowService.applyFlowRules(flow);
+        TrafficTreatment treatment = DefaultTrafficTreatment.builder()
+                                                            .punt()
+                                                            .build();
+
+        ForwardingObjective forwarding = DefaultForwardingObjective.builder()
+                .withPriority(request.priority().priorityValue())
+                .withSelector(request.selector())
+                .fromApp(appId)
+                .withFlag(ForwardingObjective.Flag.VERSATILE)
+                .withTreatment(treatment)
+                .makePermanent()
+                .add(new ObjectiveContext() {
+                    @Override
+                    public void onSuccess(Objective objective) { }
+
+                    @Override
+                    public void onError(Objective objective, ObjectiveError error) {
+                        log.warn("Failed to install packet request flow: {}", error);
+                    }
+                });
+
+        objectiveService.forward(device.id(), forwarding);
     }
 
     @Override

@@ -16,32 +16,31 @@
 package org.onosproject.driver.pipeline;
 
 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.onosproject.net.driver.DriverAdminService;
+import org.apache.felix.scr.annotations.Service;
+import org.onosproject.net.driver.DefaultDriverProviderService;
+import org.onosproject.net.driver.Driver;
 import org.onosproject.net.driver.DriverProvider;
 import org.onosproject.net.driver.XmlDriverLoader;
-import org.apache.felix.scr.annotations.Component;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
 import java.io.InputStream;
+import java.util.Set;
 
 /**
  * Bootstrap for built in drivers.
  */
-@Component(immediate = true)
-public class DefaultDrivers {
+@Service
+@Component(immediate = false)
+public class DefaultDrivers implements DefaultDriverProviderService {
 
     private final Logger log = LoggerFactory.getLogger(getClass());
 
     private static final String DRIVERS_XML = "/onos-drivers.xml";
 
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
-    protected DriverAdminService driverService;
-
     private DriverProvider provider;
 
     @Activate
@@ -50,7 +49,6 @@ public class DefaultDrivers {
         try {
             InputStream stream = classLoader.getResourceAsStream(DRIVERS_XML);
             provider = new XmlDriverLoader(classLoader).loadDrivers(stream);
-            driverService.registerProvider(provider);
         } catch (IOException e) {
             log.error("Unable to load default drivers", e);
         }
@@ -59,10 +57,11 @@ public class DefaultDrivers {
 
     @Deactivate
     protected void deactivate() {
-        if (provider != null) {
-            driverService.unregisterProvider(provider);
-        }
         log.info("Stopped");
     }
 
+    @Override
+    public Set<Driver> getDrivers() {
+        return provider.getDrivers();
+    }
 }