Added more providers/of modules and javadocs.
Split onos-core feature into onos-api and onos-core.
diff --git a/providers/of/host/src/main/java/org/onlab/onos/provider/of/host/impl/OpenFlowHostProvider.java b/providers/of/host/src/main/java/org/onlab/onos/provider/of/host/impl/OpenFlowHostProvider.java
new file mode 100644
index 0000000..8c30c8b
--- /dev/null
+++ b/providers/of/host/src/main/java/org/onlab/onos/provider/of/host/impl/OpenFlowHostProvider.java
@@ -0,0 +1,58 @@
+package org.onlab.onos.provider.of.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.Host;
+import org.onlab.onos.net.host.HostProvider;
+import org.onlab.onos.net.host.HostProviderBroker;
+import org.onlab.onos.net.host.HostProviderService;
+import org.onlab.onos.net.provider.AbstractProvider;
+import org.onlab.onos.net.provider.ProviderId;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Device provider which uses an OpenFlow controller to detect network
+ * end-station hosts.
+ */
+@Component
+public class OpenFlowHostProvider extends AbstractProvider implements HostProvider {
+
+    private final Logger log = LoggerFactory.getLogger(OpenFlowHostProvider.class);
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected HostProviderBroker providerBroker;
+
+    private HostProviderService providerService;
+
+//    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+//    protected OpenFlowController controller;
+
+    /**
+     * Creates an OpenFlow host provider.
+     */
+    public OpenFlowHostProvider() {
+        super(new ProviderId("org.onlab.onos.provider.of.host"));
+    }
+
+    @Activate
+    public void activate() {
+        providerService = providerBroker.register(this);
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        providerBroker.unregister(this);
+        providerService = null;
+        log.info("Stopped");
+    }
+
+    @Override
+    public void triggerProbe(Host host) {
+        log.info("Triggering probe on device {}", host);
+    }
+}