initial flow rule provider

@@ -17,6 +17,15 @@ public interface FlowRuleProvider extends Provider {
      */
     void applyFlowRule(FlowRule... flowRules);
 
+    /**
+     * Instructs the provider to remove the specified flow rules to their
+     * respective devices.
+     * @param flowRules one or more flow rules
+     * throws SomeKindOfException that indicates which ones were applied and
+     *                  which ones failed
+     */
+    void removeFlowRule(FlowRule... flowRules);
+
 
     /**
      * Returns the collection of flow entries currently applied on the given

+/**
+ * Traffic selection criteria model.
+ */
+package org.onlab.onos.net.flow.criteria;

+/**
+ * Traffic treatment model.
+ */
+package org.onlab.onos.net.flow.instructions;

+package org.onlab.onos.net.trivial.flow.impl;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+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.onos.event.AbstractListenerRegistry;
+import org.onlab.onos.event.EventDeliveryService;
+import org.onlab.onos.net.Device;
+import org.onlab.onos.net.DeviceId;
+import org.onlab.onos.net.device.DeviceService;
+import org.onlab.onos.net.flow.FlowEntry;
+import org.onlab.onos.net.flow.FlowRule;
+import org.onlab.onos.net.flow.FlowRuleEvent;
+import org.onlab.onos.net.flow.FlowRuleListener;
+import org.onlab.onos.net.flow.FlowRuleProvider;
+import org.onlab.onos.net.flow.FlowRuleProviderRegistry;
+import org.onlab.onos.net.flow.FlowRuleProviderService;
+import org.onlab.onos.net.flow.FlowRuleService;
+import org.onlab.onos.net.provider.AbstractProviderRegistry;
+import org.onlab.onos.net.provider.AbstractProviderService;
+import org.slf4j.Logger;
+
+@Component(immediate = true)
+@Service
+public class SimpleFlowRuleManager
+extends AbstractProviderRegistry<FlowRuleProvider, FlowRuleProviderService>
+implements FlowRuleService, FlowRuleProviderRegistry {
+
+    private final Logger log = getLogger(getClass());
+
+    private final AbstractListenerRegistry<FlowRuleEvent, FlowRuleListener>
+    listenerRegistry = new AbstractListenerRegistry<>();
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    private EventDeliveryService eventDispatcher;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    private DeviceService deviceService;
+
+    @Activate
+    public void activate() {
+        eventDispatcher.addSink(FlowRuleEvent.class, listenerRegistry);
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        eventDispatcher.removeSink(FlowRuleEvent.class);
+        log.info("Stopped");
+    }
+
+    @Override
+    public Iterable<FlowEntry> getFlowEntries(DeviceId deviceId) {
+        //TODO: store rules somewhere and return them here
+        return null;
+    }
+
+    @Override
+    public void applyFlowRules(FlowRule... flowRules) {
+        for (int i = 0; i < flowRules.length; i++) {
+            FlowRule f = flowRules[0];
+            final Device device = deviceService.getDevice(f.deviceId());
+            final FlowRuleProvider frp = getProvider(device.providerId());
+            //TODO: store rules somewhere
+            frp.applyFlowRule(f);
+        }
+
+
+    }
+
+    @Override
+    public void removeFlowRules(FlowRule... flowRules) {
+        for (int i = 0; i < flowRules.length; i++) {
+            FlowRule f = flowRules[0];
+            final Device device = deviceService.getDevice(f.deviceId());
+            final FlowRuleProvider frp = getProvider(device.providerId());
+            //TODO: remove stored rules from wherever they are
+            frp.removeFlowRule(f);
+        }
+
+    }
+
+    @Override
+    public void addListener(FlowRuleListener listener) {
+        listenerRegistry.addListener(listener);
+    }
+
+    @Override
+    public void removeListener(FlowRuleListener listener) {
+        listenerRegistry.removeListener(listener);
+    }
+
+    @Override
+    protected FlowRuleProviderService createProviderService(
+            FlowRuleProvider provider) {
+        return new InternalFlowRuleProviderService(provider);
+    }
+
+    private class InternalFlowRuleProviderService
+    extends AbstractProviderService<FlowRuleProvider>
+    implements FlowRuleProviderService {
+
+        protected InternalFlowRuleProviderService(FlowRuleProvider provider) {
+            super(provider);
+        }
+
+        @Override
+        public void flowRemoved(FlowRule flowRule) {
+            // TODO Auto-generated method stub
+
+        }
+
+        @Override
+        public void flowMissing(FlowRule flowRule) {
+            // TODO Auto-generated method stub
+
+        }
+
+        @Override
+        public void flowAdded(FlowRule flowRule) {
+            // TODO Auto-generated method stub
+
+        }
+
+    }
+
+}

-package org.onlab.onos.of.controller;
-
-/**
- * Meta events that can happen at a switch.
- *
- */
-public enum OpenFlowSwitchEvent {
-    /**
-     * The switch connected.
-     */
-    SWITCH_CONNECTED,
-
-    /**
-     * The switch disconnected.
-     */
-    SWITCH_DISCONNECTED
-}

@@ -21,6 +21,7 @@
         <module>link</module>
         <module>host</module>
         <module>packet</module>
+        <module>flow</module>
     </modules>
 
     <dependencies>