DynamicDeviceConfigServiceView
DynamicConfigService interface to provide a viewport under specified Device's tree.
Change-Id: I6134b526ec24d6c5ca1c0329cf2a1b885eafe35e
diff --git a/apps/config/src/main/java/org/onosproject/d/config/DynamicDeviceConfigServiceView.java b/apps/config/src/main/java/org/onosproject/d/config/DynamicDeviceConfigServiceView.java
new file mode 100644
index 0000000..1ec6929
--- /dev/null
+++ b/apps/config/src/main/java/org/onosproject/d/config/DynamicDeviceConfigServiceView.java
@@ -0,0 +1,170 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * 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.d.config;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.slf4j.LoggerFactory.getLogger;
+
+import java.util.Collections;
+import java.util.IdentityHashMap;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+
+import org.onosproject.config.DynamicConfigEvent;
+import org.onosproject.config.DynamicConfigListener;
+import org.onosproject.config.DynamicConfigService;
+import org.onosproject.config.Filter;
+import org.onosproject.config.ForwardingDynamicConfigService;
+import org.onosproject.net.DeviceId;
+import org.onosproject.yang.model.DataNode;
+import org.onosproject.yang.model.ResourceId;
+import org.onosproject.yang.model.RpcInput;
+import org.onosproject.yang.model.RpcOutput;
+import org.slf4j.Logger;
+
+import com.google.common.annotations.Beta;
+
+/**
+ * DynamicConfigService interface to provide a viewport
+ * under specified Device's tree.
+ */
+@Beta
+public class DynamicDeviceConfigServiceView
+ extends ForwardingDynamicConfigService
+ implements DynamicConfigService {
+
+ private static final Logger log = getLogger(DynamicDeviceConfigServiceView.class);
+
+ private final DeviceId deviceId;
+
+ private ResourceId deviceRoot;
+
+ /**
+ * original to wrapped listener.
+ */
+ private final Map<DynamicConfigListener, DynamicConfigListener> wrapped =
+ Collections.synchronizedMap(new IdentityHashMap<>());
+
+ protected DynamicDeviceConfigServiceView(DynamicConfigService delegate, DeviceId deviceId) {
+ super(delegate);
+ this.deviceId = checkNotNull(deviceId);
+ this.deviceRoot = DeviceResourceIds.toResourceId(this.deviceId);
+ }
+
+ /**
+ * Create a DynamicDeviceConfigServiceView for specified {@code deviceId}.
+ *
+ * @param service reference to actual DynamicConfigService.
+ * @param deviceId of the Device to provide view port about.
+ * @return DynamicDeviceConfigServiceView
+ */
+ public static DynamicDeviceConfigServiceView deviceView(DynamicConfigService service,
+ DeviceId deviceId) {
+ return new DynamicDeviceConfigServiceView(service, deviceId);
+ }
+
+ @Override
+ public void createNode(ResourceId path, DataNode node) {
+ super.createNode(toAbsoluteId(path), node);
+ }
+
+ @Override
+ public DataNode readNode(ResourceId path, Filter filter) {
+ // FIXME transform filter? is it possible?
+ return super.readNode(toAbsoluteId(path), filter);
+ }
+
+ @Override
+ public Boolean nodeExist(ResourceId path) {
+ return super.nodeExist(toAbsoluteId(path));
+ }
+
+ @Override
+ public void updateNode(ResourceId path, DataNode node) {
+ super.updateNode(toAbsoluteId(path), node);
+ }
+
+ @Override
+ public void replaceNode(ResourceId path, DataNode node) {
+ super.replaceNode(toAbsoluteId(path), node);
+ }
+
+ @Override
+ public void deleteNode(ResourceId path) {
+ super.deleteNode(toAbsoluteId(path));
+ }
+
+ @Override
+ public CompletableFuture<RpcOutput> invokeRpc(ResourceId id,
+ RpcInput input) {
+ return super.invokeRpc(toAbsoluteId(id), input);
+ }
+
+ @Override
+ public void addListener(DynamicConfigListener listener) {
+ super.addListener(wrapped.computeIfAbsent(listener,
+ DynamicDeviceConfigListener::new));
+ }
+
+ @Override
+ public void removeListener(DynamicConfigListener listener) {
+ DynamicConfigListener w = wrapped.remove(listener);
+ if (w != null) {
+ super.removeListener(w);
+ }
+ }
+
+ private ResourceId toAbsoluteId(ResourceId path) {
+ checkArgument(!path.nodeKeys().contains(DeviceResourceIds.ROOT_NODE),
+ "%s was already absolute path", path);
+
+ return ResourceIds.concat(deviceRoot, path);
+ }
+
+ private ResourceId toDeviceRelativeId(ResourceId path) {
+ checkArgument(path.nodeKeys().contains(DeviceResourceIds.ROOT_NODE),
+ "%s was not absolute path", path);
+
+ return ResourceIds.relativize(deviceRoot, path);
+ }
+
+ class DynamicDeviceConfigListener implements DynamicConfigListener {
+
+ private final DynamicConfigListener lsnr;
+
+ DynamicDeviceConfigListener(DynamicConfigListener lsnr) {
+ this.lsnr = checkNotNull(lsnr);
+ }
+
+ private DynamicConfigEvent deviceEvent(DynamicConfigEvent event) {
+ return new DynamicConfigEvent(event.type(),
+ toDeviceRelativeId(event.subject()));
+ }
+
+ @Override
+ public boolean isRelevant(DynamicConfigEvent event) {
+ // FIXME ignore event irrelevant to current device
+ return lsnr.isRelevant(deviceEvent(event));
+ }
+
+ @Override
+ public void event(DynamicConfigEvent event) {
+ lsnr.event(deviceEvent(event));
+ }
+
+ }
+}