ONOS checkin based on commit tag e796610b1f721d02f9b0e213cf6f7790c10ecd60

Change-Id: Ife8810491034fe7becdba75dda20de4267bd15cd

1 files changed, 86 insertions, 0 deletions

diff --git a/framework/src/onos/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceDeviceListener.java b/framework/src/onos/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceDeviceListener.java
new file mode 100644
index 00000000..e6d92253
--- /dev/null
+++ b/framework/src/onos/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceDeviceListener.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright 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.net.newresource.impl;
+
+import org.onosproject.net.Device;
+import org.onosproject.net.Port;
+import org.onosproject.net.device.DeviceEvent;
+import org.onosproject.net.device.DeviceListener;
+import org.onosproject.net.newresource.ResourceAdminService;
+import org.onosproject.net.newresource.ResourcePath;
+
+import java.util.concurrent.ExecutorService;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * An implementation of DeviceListener registering devices as resources.
+ */
+final class ResourceDeviceListener implements DeviceListener {
+
+    private final ResourceAdminService adminService;
+    private final ExecutorService executor;
+
+    /**
+     * Creates an instance with the specified ResourceAdminService and ExecutorService.
+     *
+     * @param adminService instance invoked to register resources
+     * @param executor executor used for processing resource registration
+     */
+    ResourceDeviceListener(ResourceAdminService adminService, ExecutorService executor) {
+        this.adminService = checkNotNull(adminService);
+        this.executor = checkNotNull(executor);
+    }
+
+    @Override
+    public void event(DeviceEvent event) {
+        Device device = event.subject();
+        switch (event.type()) {
+            case DEVICE_ADDED:
+                registerDeviceResource(device);
+                break;
+            case DEVICE_REMOVED:
+                unregisterDeviceResource(device);
+                break;
+            case PORT_ADDED:
+                registerPortResource(device, event.port());
+                break;
+            case PORT_REMOVED:
+                unregisterPortResource(device, event.port());
+                break;
+            default:
+                break;
+        }
+    }
+
+    private void registerDeviceResource(Device device) {
+        executor.submit(() -> adminService.registerResources(ResourcePath.ROOT, device.id()));
+    }
+
+    private void unregisterDeviceResource(Device device) {
+        executor.submit(() -> adminService.unregisterResources(ResourcePath.ROOT, device.id()));
+    }
+
+    private void registerPortResource(Device device, Port port) {
+        ResourcePath parent = new ResourcePath(device.id());
+        executor.submit(() -> adminService.registerResources(parent, port.number()));
+    }
+
+    private void unregisterPortResource(Device device, Port port) {
+        ResourcePath parent = new ResourcePath(device.id());
+        executor.submit(() -> adminService.unregisterResources(parent, port.number()));
+    }
+}