protocol independent host tracker

Change-Id: I192a17ee6eee347f6a7d8e251cecc49cbe36f8dc

@@ -105,8 +105,8 @@
         <bundle>mvn:org.onlab.onos/onos-of-ctl/1.0.0-SNAPSHOT</bundle>
 
         <bundle>mvn:org.onlab.onos/onos-lldp-provider/1.0.0-SNAPSHOT</bundle>
+        <bundle>mvn:org.onlab.onos/onos-host-provider/1.0.0-SNAPSHOT</bundle>
         <bundle>mvn:org.onlab.onos/onos-of-provider-device/1.0.0-SNAPSHOT</bundle>
-        <bundle>mvn:org.onlab.onos/onos-of-provider-host/1.0.0-SNAPSHOT</bundle>
         <bundle>mvn:org.onlab.onos/onos-of-provider-packet/1.0.0-SNAPSHOT</bundle>
         <bundle>mvn:org.onlab.onos/onos-of-provider-flow/1.0.0-SNAPSHOT</bundle>
 

+<?xml version="1.0" encoding="UTF-8"?>
+<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.onlab.onos</groupId>
+        <artifactId>onos-of-providers</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>onos-of-provider-host</artifactId>
+    <packaging>bundle</packaging>
+
+    <description>ONOS OpenFlow protocol host provider</description>
+
+</project>

+<?xml version="1.0" encoding="UTF-8"?>
+<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.onlab.onos</groupId>
+        <artifactId>onos-providers</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+
+    <artifactId>onos-host-provider</artifactId>
+    <packaging>bundle</packaging>
+
+    <description>ONOS host tracking provider</description>
+
+</project>

+package org.onlab.onos.provider.host.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.onlab.onos.net.ConnectPoint;
+import org.onlab.onos.net.Host;
+import org.onlab.onos.net.HostId;
+import org.onlab.onos.net.HostLocation;
+import org.onlab.onos.net.host.DefaultHostDescription;
+import org.onlab.onos.net.host.HostDescription;
+import org.onlab.onos.net.host.HostProvider;
+import org.onlab.onos.net.host.HostProviderRegistry;
+import org.onlab.onos.net.host.HostProviderService;
+import org.onlab.onos.net.packet.PacketContext;
+import org.onlab.onos.net.packet.PacketProcessor;
+import org.onlab.onos.net.packet.PacketService;
+import org.onlab.onos.net.provider.AbstractProvider;
+import org.onlab.onos.net.provider.ProviderId;
+import org.onlab.onos.net.topology.Topology;
+import org.onlab.onos.net.topology.TopologyService;
+
+import org.onlab.packet.ARP;
+import org.onlab.packet.Ethernet;
+
+import org.onlab.packet.IpPrefix;
+import org.onlab.packet.VlanId;
+import org.slf4j.Logger;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Provider which uses an OpenFlow controller to detect network
+ * end-station hosts.
+ */
+@Component(immediate = true)
+public class HostLocationProvider extends AbstractProvider implements HostProvider {
+
+    private final Logger log = getLogger(getClass());
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected HostProviderRegistry providerRegistry;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected PacketService pktService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected TopologyService topologyService;
+
+    private HostProviderService providerService;
+
+    private final InternalHostProvider processor = new InternalHostProvider();
+
+
+    /**
+     * Creates an OpenFlow host provider.
+     */
+    public HostLocationProvider() {
+        super(new ProviderId("of", "org.onlab.onos.provider.host"));
+    }
+
+    @Activate
+    public void activate() {
+        providerService = providerRegistry.register(this);
+        pktService.addProcessor(processor, 1);
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        providerRegistry.unregister(this);
+        pktService.removeProcessor(processor);
+        providerService = null;
+        log.info("Stopped");
+    }
+
+    @Override
+    public void triggerProbe(Host host) {
+        log.info("Triggering probe on device {}", host);
+    }
+
+    private class InternalHostProvider implements PacketProcessor {
+
+        @Override
+        public void process(PacketContext context) {
+            Ethernet eth = context.inPacket().parsed();
+
+            VlanId vlan = VlanId.vlanId(eth.getVlanID());
+            ConnectPoint heardOn = context.inPacket().receivedFrom();
+
+            // If this is not an edge port, bail out.
+            Topology topology = topologyService.currentTopology();
+            if (topologyService.isInfrastructure(topology, heardOn)) {
+                return;
+            }
+
+            HostLocation hloc = new HostLocation(heardOn, System.currentTimeMillis());
+
+            HostId hid = HostId.hostId(eth.getSourceMAC(), vlan);
+
+            // Potentially a new or moved host
+            if (eth.getEtherType() == Ethernet.TYPE_ARP) {
+                ARP arp = (ARP) eth.getPayload();
+                IpPrefix ip = IpPrefix.valueOf(arp.getSenderProtocolAddress());
+                HostDescription hdescr =
+                        new DefaultHostDescription(eth.getSourceMAC(), vlan, hloc, ip);
+                providerService.hostDetected(hid, hdescr);
+
+            } else if (eth.getEtherType() == Ethernet.TYPE_IPV4) {
+                //Do not learn new ip from ip packet.
+                HostDescription hdescr =
+                        new DefaultHostDescription(eth.getSourceMAC(), vlan, hloc);
+                providerService.hostDetected(hid, hdescr);
+
+            }
+        }
+    }
+}

+/**
+ * Provider that uses packet service as a means of host discovery and tracking.
+ */
+package org.onlab.onos.provider.host.impl;

@@ -38,6 +38,7 @@ import static org.slf4j.LoggerFactory.getLogger;
  * end-station hosts.
  */
 @Component(immediate = true)
+@Deprecated
 public class OpenFlowHostProvider extends AbstractProvider implements HostProvider {
 
     private final Logger log = getLogger(getClass());

@@ -19,6 +19,7 @@
     <modules>
         <module>openflow</module>
         <module>lldp</module>
+        <module>host</module>
     </modules>
 
     <dependencies>