ONOS-2689: Register a link as resource when it is added
Change-Id: I64c6065411731ba3ad5032730ce7b9ae122d01cc
diff --git a/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceLinkListener.java b/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceLinkListener.java
new file mode 100644
index 0000000..e2bcb2a
--- /dev/null
+++ b/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceLinkListener.java
@@ -0,0 +1,64 @@
+/*
+ * 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.Link;
+import org.onosproject.net.LinkKey;
+import org.onosproject.net.link.LinkEvent;
+import org.onosproject.net.link.LinkListener;
+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 LinkListener registering links as resources.
+ */
+final class ResourceLinkListener implements LinkListener {
+
+ 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
+ */
+ ResourceLinkListener(ResourceAdminService adminService, ExecutorService executor) {
+ this.adminService = checkNotNull(adminService);
+ this.executor = checkNotNull(executor);
+ }
+
+ @Override
+ public void event(LinkEvent event) {
+ Link link = event.subject();
+ switch (event.type()) {
+ case LINK_ADDED:
+ registerLinkResource(link);
+ break;
+ default:
+ break;
+ }
+ }
+
+ private void registerLinkResource(Link link) {
+ LinkKey linkKey = LinkKey.linkKey(link);
+ executor.submit(() -> adminService.registerResources(ResourcePath.ROOT, linkKey));
+ }
+}
diff --git a/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceRegistrar.java b/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceRegistrar.java
new file mode 100644
index 0000000..1b4ac2b
--- /dev/null
+++ b/core/net/src/main/java/org/onosproject/net/newresource/impl/ResourceRegistrar.java
@@ -0,0 +1,60 @@
+/*
+ * 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 com.google.common.annotations.Beta;
+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.link.LinkListener;
+import org.onosproject.net.link.LinkService;
+import org.onosproject.net.newresource.ResourceAdminService;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+import static org.onlab.util.Tools.groupedThreads;
+
+/**
+ * A class registering resources when they are detected.
+ */
+@Component(immediate = true, enabled = false)
+@Beta
+public final class ResourceRegistrar {
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected ResourceAdminService adminService;
+
+ @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+ protected LinkService linkService;
+
+ private LinkListener linkListener;
+ private final ExecutorService executor =
+ Executors.newSingleThreadExecutor(groupedThreads("onos/resource", "registrar"));
+
+ @Activate
+ public void activate() {
+ linkListener = new ResourceLinkListener(adminService, executor);
+ linkService.addListener(linkListener);
+ }
+
+ @Deactivate
+ public void deactivate() {
+ linkService.removeListener(linkListener);
+ }
+}