Moved AbstractWebResource to api bundle so it is accessible by applications.

Change-Id: Iddfe8a7d42d432e09424cede04b6c847198a9c85
diff --git a/web/api/src/main/java/org/onosproject/rest/resources/DevicesWebResource.java b/web/api/src/main/java/org/onosproject/rest/resources/DevicesWebResource.java
new file mode 100644
index 0000000..5e393fa
--- /dev/null
+++ b/web/api/src/main/java/org/onosproject/rest/resources/DevicesWebResource.java
@@ -0,0 +1,67 @@
+/*
+ * 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.rest.resources;
+
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import org.onosproject.net.Device;
+import org.onosproject.net.Port;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.rest.AbstractWebResource;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.core.Response;
+import java.util.List;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.onlab.util.Tools.nullIsNotFound;
+import static org.onosproject.net.DeviceId.deviceId;
+
+/**
+ * REST resource for interacting with the inventory of infrastructure devices.
+ */
+@Path("devices")
+public class DevicesWebResource extends AbstractWebResource {
+
+    public static final String DEVICE_NOT_FOUND = "Device is not found";
+
+    @GET
+    public Response getDevices() {
+        Iterable<Device> devices = get(DeviceService.class).getDevices();
+        return ok(encodeArray(Device.class, "devices", devices)).build();
+    }
+
+    @GET
+    @Path("{id}")
+    public Response getDevice(@PathParam("id") String id) {
+        Device device = nullIsNotFound(get(DeviceService.class).getDevice(deviceId(id)),
+                                       DEVICE_NOT_FOUND);
+        return ok(codec(Device.class).encode(device, this)).build();
+    }
+
+    @GET
+    @Path("{id}/ports")
+    public Response getDevicePorts(@PathParam("id") String id) {
+        DeviceService service = get(DeviceService.class);
+        Device device = nullIsNotFound(service.getDevice(deviceId(id)), DEVICE_NOT_FOUND);
+        List<Port> ports = checkNotNull(service.getPorts(deviceId(id)), "Ports could not be retrieved");
+        ObjectNode result = codec(Device.class).encode(device, this);
+        result.set("ports", codec(Port.class).encode(ports, this));
+        return ok(result).build();
+    }
+
+}