ONOS checkin based on commit tag e796610b1f721d02f9b0e213cf6f7790c10ecd60

Change-Id: Ife8810491034fe7becdba75dda20de4267bd15cd

5 files changed, 761 insertions, 0 deletions

diff --git a/framework/src/onos/providers/openflow/packet/pom.xml b/framework/src/onos/providers/openflow/packet/pom.xml
new file mode 100644
index 00000000..f7f62d8e
--- /dev/null
+++ b/framework/src/onos/providers/openflow/packet/pom.xml
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2014 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.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.onosproject</groupId>
+        <artifactId>onos-of-providers</artifactId>
+        <version>1.3.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>onos-of-provider-packet</artifactId>
+    <packaging>bundle</packaging>
+
+    <description>ONOS OpenFlow protocol packet provider</description>
+
+</project>
diff --git a/framework/src/onos/providers/openflow/packet/src/main/java/org/onosproject/provider/of/packet/impl/OpenFlowCorePacketContext.java b/framework/src/onos/providers/openflow/packet/src/main/java/org/onosproject/provider/of/packet/impl/OpenFlowCorePacketContext.java
new file mode 100644
index 00000000..6d153103
--- /dev/null
+++ b/framework/src/onos/providers/openflow/packet/src/main/java/org/onosproject/provider/of/packet/impl/OpenFlowCorePacketContext.java
@@ -0,0 +1,99 @@
+/*
+ * Copyright 2014-2015 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.provider.of.packet.impl;
+
+import org.onlab.packet.DeserializationException;
+import org.onlab.packet.Ethernet;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.flow.instructions.Instruction;
+import org.onosproject.net.flow.instructions.Instruction.Type;
+import org.onosproject.net.flow.instructions.Instructions.OutputInstruction;
+import org.onosproject.net.packet.DefaultPacketContext;
+import org.onosproject.net.packet.InboundPacket;
+import org.onosproject.net.packet.OutboundPacket;
+import org.onosproject.openflow.controller.OpenFlowPacketContext;
+import org.projectfloodlight.openflow.types.OFPort;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.List;
+
+/**
+ * Packet context used with the OpenFlow providers.
+ */
+public class OpenFlowCorePacketContext extends DefaultPacketContext {
+
+    private static final Logger log = LoggerFactory.getLogger(OpenFlowCorePacketContext.class);
+
+    private final OpenFlowPacketContext ofPktCtx;
+
+    /**
+     * Creates a new OpenFlow core packet context.
+     *
+     * @param time creation time
+     * @param inPkt inbound packet
+     * @param outPkt outbound packet
+     * @param block whether the context is blocked or not
+     * @param ofPktCtx OpenFlow packet context
+     */
+    protected OpenFlowCorePacketContext(long time, InboundPacket inPkt,
+                                        OutboundPacket outPkt, boolean block,
+                                        OpenFlowPacketContext ofPktCtx) {
+        super(time, inPkt, outPkt, block);
+        this.ofPktCtx = ofPktCtx;
+    }
+
+    @Override
+    public void send() {
+        if (!this.block()) {
+            if (outPacket() == null) {
+                sendPacket(null);
+            } else {
+                try {
+                    Ethernet eth = Ethernet.deserializer()
+                            .deserialize(outPacket().data().array(), 0,
+                                         outPacket().data().array().length);
+                    sendPacket(eth);
+                } catch (DeserializationException e) {
+                    log.warn("Unable to deserialize packet");
+                }
+            }
+        }
+    }
+
+    private void sendPacket(Ethernet eth) {
+        List<Instruction> ins = treatmentBuilder().build().allInstructions();
+        OFPort p = null;
+        //TODO: support arbitrary list of treatments must be supported in ofPacketContext
+        for (Instruction i : ins) {
+            if (i.type() == Type.OUTPUT) {
+                p = buildPort(((OutputInstruction) i).port());
+                break; //for now...
+            }
+        }
+        if (eth == null) {
+            ofPktCtx.build(p);
+        } else {
+            ofPktCtx.build(eth, p);
+        }
+        ofPktCtx.send();
+    }
+
+    private OFPort buildPort(PortNumber port) {
+        return OFPort.of((int) port.toLong());
+    }
+
+}
diff --git a/framework/src/onos/providers/openflow/packet/src/main/java/org/onosproject/provider/of/packet/impl/OpenFlowPacketProvider.java b/framework/src/onos/providers/openflow/packet/src/main/java/org/onosproject/provider/of/packet/impl/OpenFlowPacketProvider.java
new file mode 100644
index 00000000..dc79feff
--- /dev/null
+++ b/framework/src/onos/providers/openflow/packet/src/main/java/org/onosproject/provider/of/packet/impl/OpenFlowPacketProvider.java
@@ -0,0 +1,176 @@
+/*
+ * Copyright 2014-2015 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.provider.of.packet.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.onosproject.net.ConnectPoint;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.flow.instructions.Instruction;
+import org.onosproject.net.flow.instructions.Instructions.OutputInstruction;
+import org.onosproject.net.packet.DefaultInboundPacket;
+import org.onosproject.net.packet.DefaultOutboundPacket;
+import org.onosproject.net.packet.OutboundPacket;
+import org.onosproject.net.packet.PacketProvider;
+import org.onosproject.net.packet.PacketProviderRegistry;
+import org.onosproject.net.packet.PacketProviderService;
+import org.onosproject.net.provider.AbstractProvider;
+import org.onosproject.net.provider.ProviderId;
+import org.onosproject.openflow.controller.Dpid;
+import org.onosproject.openflow.controller.OpenFlowController;
+import org.onosproject.openflow.controller.OpenFlowPacketContext;
+import org.onosproject.openflow.controller.OpenFlowSwitch;
+import org.onosproject.openflow.controller.PacketListener;
+import org.projectfloodlight.openflow.protocol.OFPacketOut;
+import org.projectfloodlight.openflow.protocol.OFPortDesc;
+import org.projectfloodlight.openflow.protocol.action.OFAction;
+import org.projectfloodlight.openflow.protocol.ver10.OFFactoryVer10;
+import org.projectfloodlight.openflow.types.OFBufferId;
+import org.projectfloodlight.openflow.types.OFPort;
+import org.slf4j.Logger;
+
+import java.nio.ByteBuffer;
+import java.util.Collections;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+
+/**
+ * Provider which uses an OpenFlow controller to detect network
+ * infrastructure links.
+ */
+@Component(immediate = true)
+public class OpenFlowPacketProvider extends AbstractProvider implements PacketProvider {
+
+    private final Logger log = getLogger(getClass());
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected PacketProviderRegistry providerRegistry;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected OpenFlowController controller;
+
+    private PacketProviderService providerService;
+
+    private final InternalPacketProvider listener = new InternalPacketProvider();
+
+    /**
+     * Creates an OpenFlow link provider.
+     */
+    public OpenFlowPacketProvider() {
+        super(new ProviderId("of", "org.onosproject.provider.openflow"));
+    }
+
+    @Activate
+    public void activate() {
+        providerService = providerRegistry.register(this);
+        controller.addPacketListener(20, listener);
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        providerRegistry.unregister(this);
+        controller.removePacketListener(listener);
+        providerService = null;
+        log.info("Stopped");
+    }
+
+    @Override
+    public void emit(OutboundPacket packet) {
+        DeviceId devId = packet.sendThrough();
+        String scheme = devId.toString().split(":")[0];
+
+        if (!scheme.equals(this.id().scheme())) {
+            throw new IllegalArgumentException(
+                    "Don't know how to handle Device with scheme " + scheme);
+        }
+
+        Dpid dpid = Dpid.dpid(devId.uri());
+        OpenFlowSwitch sw = controller.getSwitch(dpid);
+        if (sw == null) {
+            log.warn("Device {} isn't available?", devId);
+            return;
+        }
+
+        //Ethernet eth = new Ethernet();
+        //eth.deserialize(packet.data().array(), 0, packet.data().array().length);
+        OFPortDesc p = null;
+        for (Instruction inst : packet.treatment().allInstructions()) {
+            if (inst.type().equals(Instruction.Type.OUTPUT)) {
+                p = portDesc(((OutputInstruction) inst).port());
+                OFPacketOut po = packetOut(sw, packet.data().array(), p.getPortNo());
+                sw.sendMsg(po);
+            }
+        }
+
+    }
+
+    private OFPortDesc portDesc(PortNumber port) {
+        OFPortDesc.Builder builder = OFFactoryVer10.INSTANCE.buildPortDesc();
+        builder.setPortNo(OFPort.of((int) port.toLong()));
+
+        return builder.build();
+    }
+
+    private OFPacketOut packetOut(OpenFlowSwitch sw, byte[] eth, OFPort out) {
+        OFPacketOut.Builder builder = sw.factory().buildPacketOut();
+        OFAction act = sw.factory().actions()
+                .buildOutput()
+                .setPort(out)
+                .build();
+        return builder
+                .setBufferId(OFBufferId.NO_BUFFER)
+                .setInPort(OFPort.CONTROLLER)
+                .setActions(Collections.singletonList(act))
+                .setData(eth)
+                .build();
+    }
+
+    /**
+     * Internal Packet Provider implementation.
+     *
+     */
+    private class InternalPacketProvider implements PacketListener {
+
+        @Override
+        public void handlePacket(OpenFlowPacketContext pktCtx) {
+            DeviceId id = DeviceId.deviceId(Dpid.uri(pktCtx.dpid().value()));
+
+            DefaultInboundPacket inPkt = new DefaultInboundPacket(
+                    new ConnectPoint(id, PortNumber.portNumber(pktCtx.inPort())),
+                    pktCtx.parsed(), ByteBuffer.wrap(pktCtx.unparsed()));
+
+            DefaultOutboundPacket outPkt = null;
+            if (!pktCtx.isBuffered()) {
+                outPkt = new DefaultOutboundPacket(id, null,
+                        ByteBuffer.wrap(pktCtx.unparsed()));
+            }
+
+            OpenFlowCorePacketContext corePktCtx =
+                    new OpenFlowCorePacketContext(System.currentTimeMillis(),
+                            inPkt, outPkt, pktCtx.isHandled(), pktCtx);
+            providerService.processPacket(corePktCtx);
+        }
+
+    }
+
+
+}
diff --git a/framework/src/onos/providers/openflow/packet/src/main/java/org/onosproject/provider/of/packet/impl/package-info.java b/framework/src/onos/providers/openflow/packet/src/main/java/org/onosproject/provider/of/packet/impl/package-info.java
new file mode 100644
index 00000000..dd1130c0
--- /dev/null
+++ b/framework/src/onos/providers/openflow/packet/src/main/java/org/onosproject/provider/of/packet/impl/package-info.java
@@ -0,0 +1,21 @@
+/*
+ * Copyright 2014 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.
+ */
+
+/**
+ * Provider that uses OpenFlow controller as a means of intercepting and
+ * emitting packets.
+ */
+package org.onosproject.provider.of.packet.impl;
diff --git a/framework/src/onos/providers/openflow/packet/src/test/java/org/onosproject/provider/of/packet/impl/OpenFlowPacketProviderTest.java b/framework/src/onos/providers/openflow/packet/src/test/java/org/onosproject/provider/of/packet/impl/OpenFlowPacketProviderTest.java
new file mode 100644
index 00000000..5fded926
--- /dev/null
+++ b/framework/src/onos/providers/openflow/packet/src/test/java/org/onosproject/provider/of/packet/impl/OpenFlowPacketProviderTest.java
@@ -0,0 +1,431 @@
+/*
+ * Copyright 2014-2015 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.provider.of.packet.impl;
+
+import com.google.common.collect.Lists;
+import com.google.common.collect.Sets;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.packet.ARP;
+import org.onlab.packet.Ethernet;
+import org.onosproject.net.Device;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.flow.DefaultTrafficTreatment;
+import org.onosproject.net.flow.TrafficTreatment;
+import org.onosproject.net.flow.instructions.Instruction;
+import org.onosproject.net.flow.instructions.Instructions;
+import org.onosproject.net.packet.DefaultOutboundPacket;
+import org.onosproject.net.packet.OutboundPacket;
+import org.onosproject.net.packet.PacketContext;
+import org.onosproject.net.packet.PacketProvider;
+import org.onosproject.net.packet.PacketProviderRegistry;
+import org.onosproject.net.packet.PacketProviderService;
+import org.onosproject.net.provider.ProviderId;
+import org.onosproject.openflow.controller.DefaultOpenFlowPacketContext;
+import org.onosproject.openflow.controller.Dpid;
+import org.onosproject.openflow.controller.OpenFlowController;
+import org.onosproject.openflow.controller.OpenFlowEventListener;
+import org.onosproject.openflow.controller.OpenFlowPacketContext;
+import org.onosproject.openflow.controller.OpenFlowSwitch;
+import org.onosproject.openflow.controller.OpenFlowSwitchListener;
+import org.onosproject.openflow.controller.PacketListener;
+import org.onosproject.openflow.controller.RoleState;
+import org.projectfloodlight.openflow.protocol.OFFactory;
+import org.projectfloodlight.openflow.protocol.OFMessage;
+import org.projectfloodlight.openflow.protocol.OFPacketIn;
+import org.projectfloodlight.openflow.protocol.OFPacketInReason;
+import org.projectfloodlight.openflow.protocol.OFPortDesc;
+import org.projectfloodlight.openflow.protocol.ver10.OFFactoryVer10;
+import org.projectfloodlight.openflow.types.MacAddress;
+import org.projectfloodlight.openflow.types.OFBufferId;
+import org.projectfloodlight.openflow.types.OFPort;
+
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+
+import static org.junit.Assert.*;
+
+
+public class OpenFlowPacketProviderTest {
+
+    private static final int PN1 = 100;
+    private static final int PN2 = 200;
+    private static final int PN3 = 300;
+    private static final short VLANID = (short) 100;
+
+    private static final DeviceId DID = DeviceId.deviceId("of:1");
+    private static final DeviceId DID_MISSING = DeviceId.deviceId("of:2");
+    private static final DeviceId DID_WRONG = DeviceId.deviceId("test:1");
+    private static final PortNumber P1 = PortNumber.portNumber(PN1);
+    private static final PortNumber P2 = PortNumber.portNumber(PN2);
+    private static final PortNumber P3 = PortNumber.portNumber(PN3);
+
+    private static final Instruction INST1 = Instructions.createOutput(P1);
+    private static final Instruction INST2 = Instructions.createOutput(P2);
+    private static final Instruction INST3 = Instructions.createOutput(P3);
+
+    private static final OFPortDesc PD1 = portDesc(PN1);
+    private static final OFPortDesc PD2 = portDesc(PN2);
+
+    private static final List<OFPortDesc> PLIST = Lists.newArrayList(PD1, PD2);
+    private static final TrafficTreatment TR = treatment(INST1, INST2);
+    private static final TrafficTreatment TR_MISSING = treatment(INST1, INST3);
+
+    private static final byte[] ANY = new byte [] {0, 0, 0, 0};
+
+    private final OpenFlowPacketProvider provider = new OpenFlowPacketProvider();
+    private final TestPacketRegistry registry = new TestPacketRegistry();
+    private final TestController controller = new TestController();
+
+    private final TestOpenFlowSwitch sw = new TestOpenFlowSwitch();
+
+    @Before
+    public void startUp() {
+        provider.providerRegistry = registry;
+        provider.controller = controller;
+        provider.activate();
+        assertNotNull("listener should be registered", registry.listener);
+    }
+
+    @After
+    public void teardown() {
+        provider.deactivate();
+        assertNull("listeners shouldn't be registered", registry.listener);
+        provider.controller = null;
+        provider.providerRegistry = null;
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void wrongScheme() {
+        sw.setRole(RoleState.MASTER);
+        OutboundPacket schemeFailPkt = outPacket(DID_WRONG, TR, null);
+        provider.emit(schemeFailPkt);
+        assertEquals("message sent incorrectly", 0, sw.sent.size());
+    }
+
+    @Test
+    public void emit() {
+
+        MacAddress mac1 = MacAddress.of("00:00:00:11:00:01");
+        MacAddress mac2 = MacAddress.of("00:00:00:22:00:02");
+
+        ARP arp = new ARP();
+        arp.setSenderProtocolAddress(ANY)
+        .setSenderHardwareAddress(mac1.getBytes())
+        .setTargetHardwareAddress(mac2.getBytes())
+        .setTargetProtocolAddress(ANY)
+        .setHardwareType((short) 0)
+        .setProtocolType((short) 0)
+        .setHardwareAddressLength((byte) 6)
+        .setProtocolAddressLength((byte) 4)
+        .setOpCode((byte) 0);
+
+        Ethernet eth = new Ethernet();
+        eth.setVlanID(VLANID)
+        .setEtherType(Ethernet.TYPE_ARP)
+        .setSourceMACAddress("00:00:00:11:00:01")
+        .setDestinationMACAddress("00:00:00:22:00:02")
+        .setPayload(arp);
+
+        //the should-be working setup.
+        OutboundPacket passPkt = outPacket(DID, TR, eth);
+        sw.setRole(RoleState.MASTER);
+        provider.emit(passPkt);
+        assertEquals("invalid switch", sw, controller.current);
+        assertEquals("message not sent", PLIST.size(), sw.sent.size());
+        sw.sent.clear();
+
+        //wrong Role
+        //sw.setRole(RoleState.SLAVE);
+        //provider.emit(passPkt);
+        //assertEquals("invalid switch", sw, controller.current);
+        //assertEquals("message sent incorrectly", 0, sw.sent.size());
+
+        //sw.setRole(RoleState.MASTER);
+
+        //missing switch
+        OutboundPacket swFailPkt = outPacket(DID_MISSING, TR, eth);
+        provider.emit(swFailPkt);
+        assertNull("invalid switch", controller.current);
+        assertEquals("message sent incorrectly", 0, sw.sent.size());
+
+        //to missing port
+        //OutboundPacket portFailPkt = outPacket(DID, TR_MISSING, eth);
+        //provider.emit(portFailPkt);
+        //assertEquals("extra message sent", 1, sw.sent.size());
+
+    }
+
+    @Test
+    public void handlePacket() {
+        OFPacketIn pkt = sw.factory().buildPacketIn()
+                .setBufferId(OFBufferId.NO_BUFFER)
+                .setInPort(OFPort.NO_MASK)
+                .setReason(OFPacketInReason.INVALID_TTL)
+                .build();
+
+        controller.processPacket(null, pkt);
+        assertNotNull("message unprocessed", registry.ctx);
+
+    }
+
+    private static OFPortDesc portDesc(int port) {
+        OFPortDesc.Builder builder = OFFactoryVer10.INSTANCE.buildPortDesc();
+        builder.setPortNo(OFPort.of(port));
+
+        return builder.build();
+    }
+
+    private static TrafficTreatment treatment(Instruction ... insts) {
+        TrafficTreatment.Builder builder = DefaultTrafficTreatment.builder();
+        for (Instruction i : insts) {
+            builder.add(i);
+        }
+        return builder.build();
+    }
+
+    private static OutboundPacket outPacket(
+            DeviceId d, TrafficTreatment t, Ethernet e) {
+        ByteBuffer buf = null;
+        if (e != null) {
+            buf = ByteBuffer.wrap(e.serialize());
+        }
+        return new DefaultOutboundPacket(d, t, buf);
+    }
+
+    private class TestPacketRegistry implements PacketProviderRegistry {
+
+        PacketProvider listener = null;
+        PacketContext ctx = null;
+
+        @Override
+        public PacketProviderService register(PacketProvider provider) {
+            listener = provider;
+            return new TestPacketProviderService();
+        }
+
+        @Override
+        public void unregister(PacketProvider provider) {
+            listener = null;
+        }
+
+        @Override
+        public Set<ProviderId> getProviders() {
+            return Sets.newHashSet(listener.id());
+        }
+
+        private class TestPacketProviderService implements PacketProviderService {
+
+            @Override
+            public PacketProvider provider() {
+                return null;
+            }
+
+            @Override
+            public void processPacket(PacketContext context) {
+                ctx = context;
+            }
+
+        }
+    }
+
+    private class TestController implements OpenFlowController {
+
+        PacketListener pktListener;
+        OpenFlowSwitch current;
+
+        @Override
+        public Iterable<OpenFlowSwitch> getSwitches() {
+            return null;
+        }
+
+        @Override
+        public Iterable<OpenFlowSwitch> getMasterSwitches() {
+            return null;
+        }
+
+        @Override
+        public Iterable<OpenFlowSwitch> getEqualSwitches() {
+            return null;
+        }
+
+        @Override
+        public OpenFlowSwitch getSwitch(Dpid dpid) {
+            if (dpid.equals(Dpid.dpid(DID.uri()))) {
+                current = sw;
+            } else {
+                current = null;
+            }
+            return current;
+        }
+
+        @Override
+        public OpenFlowSwitch getMasterSwitch(Dpid dpid) {
+            return null;
+        }
+
+        @Override
+        public OpenFlowSwitch getEqualSwitch(Dpid dpid) {
+            return null;
+        }
+
+        @Override
+        public void addListener(OpenFlowSwitchListener listener) {
+        }
+
+        @Override
+        public void removeListener(OpenFlowSwitchListener listener) {
+        }
+
+        @Override
+        public void addPacketListener(int priority, PacketListener listener) {
+            pktListener = listener;
+        }
+
+        @Override
+        public void removePacketListener(PacketListener listener) {
+        }
+
+        @Override
+        public void addEventListener(OpenFlowEventListener listener) {
+        }
+
+        @Override
+        public void removeEventListener(OpenFlowEventListener listener) {
+        }
+
+        @Override
+        public void write(Dpid dpid, OFMessage msg) {
+        }
+
+        @Override
+        public void processPacket(Dpid dpid, OFMessage msg) {
+            OpenFlowPacketContext pktCtx =
+                    DefaultOpenFlowPacketContext.
+                    packetContextFromPacketIn(sw, (OFPacketIn) msg);
+            pktListener.handlePacket(pktCtx);
+        }
+
+        @Override
+        public void setRole(Dpid dpid, RoleState role) {
+        }
+
+    }
+
+    private class TestOpenFlowSwitch implements OpenFlowSwitch {
+
+        RoleState state;
+        List<OFMessage> sent = new ArrayList<OFMessage>();
+        OFFactory factory = OFFactoryVer10.INSTANCE;
+
+        @Override
+        public void sendMsg(OFMessage msg) {
+            sent.add(msg);
+        }
+
+        @Override
+        public void sendMsg(List<OFMessage> msgs) {
+        }
+
+        @Override
+        public void handleMessage(OFMessage fromSwitch) {
+        }
+
+        @Override
+        public void setRole(RoleState role) {
+            state = role;
+        }
+
+        @Override
+        public RoleState getRole() {
+            return state;
+        }
+
+        @Override
+        public List<OFPortDesc> getPorts() {
+            return PLIST;
+        }
+
+        @Override
+        public OFFactory factory() {
+            return factory;
+        }
+
+        @Override
+        public String getStringId() {
+            return null;
+        }
+
+        @Override
+        public long getId() {
+            return 0;
+        }
+
+        @Override
+        public String manufacturerDescription() {
+            return null;
+        }
+
+        @Override
+        public String datapathDescription() {
+            return null;
+        }
+
+        @Override
+        public String hardwareDescription() {
+            return null;
+        }
+
+        @Override
+        public String softwareDescription() {
+            return null;
+        }
+
+        @Override
+        public String serialNumber() {
+            return null;
+        }
+
+        @Override
+        public boolean isConnected() {
+            return true;
+        }
+
+        @Override
+        public void disconnectSwitch() {
+        }
+
+        @Override
+        public void returnRoleReply(RoleState requested, RoleState reponse) {
+        }
+        @Override
+        public Device.Type deviceType() {
+            return Device.Type.SWITCH;
+        }
+
+        @Override
+        public String channelId() {
+            return "1.2.3.4:1";
+        }
+
+
+    }
+
+}