2 * Copyright (c) 2016 Brocade Communications Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.controller.blueprint.ext;
10 import com.google.common.base.Strings;
11 import java.io.StringReader;
13 import java.util.Collections;
15 import javax.xml.parsers.DocumentBuilderFactory;
16 import org.apache.aries.blueprint.ComponentDefinitionRegistry;
17 import org.apache.aries.blueprint.NamespaceHandler;
18 import org.apache.aries.blueprint.ParserContext;
19 import org.apache.aries.blueprint.ext.ComponentFactoryMetadata;
20 import org.apache.aries.blueprint.mutable.MutableBeanMetadata;
21 import org.apache.aries.blueprint.mutable.MutableRefMetadata;
22 import org.apache.aries.blueprint.mutable.MutableReferenceMetadata;
23 import org.apache.aries.blueprint.mutable.MutableServiceMetadata;
24 import org.apache.aries.blueprint.mutable.MutableServiceReferenceMetadata;
25 import org.apache.aries.blueprint.mutable.MutableValueMetadata;
26 import org.opendaylight.controller.blueprint.BlueprintContainerRestartService;
27 import org.opendaylight.controller.md.sal.binding.api.NotificationService;
28 import org.opendaylight.controller.sal.binding.api.RpcProviderRegistry;
29 import org.osgi.service.blueprint.container.ComponentDefinitionException;
30 import org.osgi.service.blueprint.reflect.BeanMetadata;
31 import org.osgi.service.blueprint.reflect.ComponentMetadata;
32 import org.osgi.service.blueprint.reflect.Metadata;
33 import org.osgi.service.blueprint.reflect.RefMetadata;
34 import org.osgi.service.blueprint.reflect.ReferenceMetadata;
35 import org.osgi.service.blueprint.reflect.ServiceMetadata;
36 import org.osgi.service.blueprint.reflect.ServiceReferenceMetadata;
37 import org.osgi.service.blueprint.reflect.ValueMetadata;
38 import org.slf4j.Logger;
39 import org.slf4j.LoggerFactory;
40 import org.w3c.dom.Attr;
41 import org.w3c.dom.Element;
42 import org.w3c.dom.Node;
43 import org.w3c.dom.NodeList;
44 import org.xml.sax.InputSource;
47 * The NamespaceHandler for Opendaylight blueprint extensions.
49 * @author Thomas Pantelis
51 public class OpendaylightNamespaceHandler implements NamespaceHandler {
52 public static final String NAMESPACE_1_0_0 = "http://opendaylight.org/xmlns/blueprint/v1.0.0";
53 static final String ROUTED_RPC_REG_CONVERTER_NAME = "org.opendaylight.blueprint.RoutedRpcRegConverter";
54 static final String RPC_REGISTRY_NAME = "org.opendaylight.blueprint.RpcRegistry";
55 static final String NOTIFICATION_SERVICE_NAME = "org.opendaylight.blueprint.NotificationService";
56 static final String TYPE_ATTR = "type";
57 static final String UPDATE_STRATEGY_ATTR = "update-strategy";
59 private static final Logger LOG = LoggerFactory.getLogger(OpendaylightNamespaceHandler.class);
60 private static final String COMPONENT_PROCESSOR_NAME = ComponentProcessor.class.getName();
61 private static final String RESTART_DEPENDENTS_ON_UPDATES = "restart-dependents-on-updates";
62 private static final String USE_DEFAULT_FOR_REFERENCE_TYPES = "use-default-for-reference-types";
63 private static final String CLUSTERED_APP_CONFIG = "clustered-app-config";
64 private static final String INTERFACE = "interface";
65 private static final String REF_ATTR = "ref";
66 private static final String ID_ATTR = "id";
67 private static final String RPC_SERVICE = "rpc-service";
68 private static final String SPECIFIC_SERVICE_REF_LIST = "specific-reference-list";
69 private static final String STATIC_REFERENCE = "static-reference";
71 @SuppressWarnings("rawtypes")
73 public Set<Class> getManagedClasses() {
74 return Collections.emptySet();
78 public URL getSchemaLocation(String namespace) {
79 if(NAMESPACE_1_0_0.equals(namespace)) {
80 URL url = getClass().getResource("/opendaylight-blueprint-ext-1.0.0.xsd");
81 LOG.debug("getSchemaLocation for {} returning URL {}", namespace, url);
89 public Metadata parse(Element element, ParserContext context) {
90 LOG.debug("In parse for {}", element);
92 if (nodeNameEquals(element, RpcImplementationBean.RPC_IMPLEMENTATION)) {
93 return parseRpcImplementation(element, context);
94 } else if (nodeNameEquals(element, RoutedRpcMetadata.ROUTED_RPC_IMPLEMENTATION)) {
95 return parseRoutedRpcImplementation(element, context);
96 } else if (nodeNameEquals(element, RPC_SERVICE)) {
97 return parseRpcService(element, context);
98 } else if (nodeNameEquals(element, NotificationListenerBean.NOTIFICATION_LISTENER)) {
99 return parseNotificationListener(element, context);
100 } else if (nodeNameEquals(element, CLUSTERED_APP_CONFIG)) {
101 return parseClusteredAppConfig(element, context);
102 } else if (nodeNameEquals(element, SPECIFIC_SERVICE_REF_LIST)) {
103 return parseSpecificReferenceList(element, context);
104 } else if (nodeNameEquals(element, STATIC_REFERENCE)) {
105 return parseStaticReference(element, context);
108 throw new ComponentDefinitionException("Unsupported standalone element: " + element.getNodeName());
112 public ComponentMetadata decorate(Node node, ComponentMetadata component, ParserContext context) {
113 if(node instanceof Attr) {
114 if (nodeNameEquals(node, RESTART_DEPENDENTS_ON_UPDATES)) {
115 return decorateRestartDependentsOnUpdates((Attr)node, component, context);
116 } else if (nodeNameEquals(node, USE_DEFAULT_FOR_REFERENCE_TYPES)) {
117 return decorateUseDefaultForReferenceTypes((Attr)node, component, context);
118 } else if (nodeNameEquals(node, TYPE_ATTR)) {
119 if(component instanceof ServiceReferenceMetadata) {
120 return decorateServiceReferenceType((Attr)node, component, context);
121 } else if(component instanceof ServiceMetadata) {
122 return decorateServiceType((Attr)node, component, context);
125 throw new ComponentDefinitionException("Attribute " + node.getNodeName() +
126 " can only be used on a <reference>, <reference-list> or <service> element");
129 throw new ComponentDefinitionException("Unsupported attribute: " + node.getNodeName());
131 throw new ComponentDefinitionException("Unsupported node type: " + node);
135 private ComponentMetadata decorateServiceType(Attr attr, ComponentMetadata component, ParserContext context) {
136 if (!(component instanceof MutableServiceMetadata)) {
137 throw new ComponentDefinitionException("Expected an instanceof MutableServiceMetadata");
140 MutableServiceMetadata service = (MutableServiceMetadata)component;
142 LOG.debug("decorateServiceType for {} - adding type property {}", service.getId(), attr.getValue());
144 service.addServiceProperty(createValue(context, TYPE_ATTR), createValue(context, attr.getValue()));
148 private ComponentMetadata decorateServiceReferenceType(Attr attr, ComponentMetadata component, ParserContext context) {
149 if (!(component instanceof MutableServiceReferenceMetadata)) {
150 throw new ComponentDefinitionException("Expected an instanceof MutableServiceReferenceMetadata");
153 // We don't actually need the ComponentProcessor for augmenting the OSGi filter here but we create it
154 // to workaround an issue in Aries where it doesn't use the extended filter unless there's a
155 // Processor or ComponentDefinitionRegistryProcessor registered. This may actually be working as
156 // designed in Aries b/c the extended filter was really added to allow the OSGi filter to be
157 // substituted by a variable via the "cm:property-placeholder" processor. If so, it's a bit funky
158 // but as long as there's at least one processor registered, it correctly uses the extended filter.
159 registerComponentProcessor(context);
161 MutableServiceReferenceMetadata serviceRef = (MutableServiceReferenceMetadata)component;
162 String oldFilter = serviceRef.getExtendedFilter() == null ? null :
163 serviceRef.getExtendedFilter().getStringValue();
166 if(Strings.isNullOrEmpty(oldFilter)) {
167 filter = String.format("(type=%s)", attr.getValue());
169 filter = String.format("(&(%s)(type=%s))", oldFilter, attr.getValue());
172 LOG.debug("decorateServiceReferenceType for {} with type {}, old filter: {}, new filter: {}",
173 serviceRef.getId(), attr.getValue(), oldFilter, filter);
175 serviceRef.setExtendedFilter(createValue(context, filter));
179 private static ComponentMetadata decorateRestartDependentsOnUpdates(Attr attr, ComponentMetadata component,
180 ParserContext context) {
181 return enableComponentProcessorProperty(attr, component, context, "restartDependentsOnUpdates");
184 private static ComponentMetadata decorateUseDefaultForReferenceTypes(Attr attr, ComponentMetadata component,
185 ParserContext context) {
186 return enableComponentProcessorProperty(attr, component, context, "useDefaultForReferenceTypes");
189 private static ComponentMetadata enableComponentProcessorProperty(Attr attr, ComponentMetadata component,
190 ParserContext context, String propertyName) {
191 if(component != null) {
192 throw new ComponentDefinitionException("Attribute " + attr.getNodeName() +
193 " can only be used on the root <blueprint> element");
196 LOG.debug("{}: {}", propertyName, attr.getValue());
198 if(!Boolean.parseBoolean(attr.getValue())) {
202 MutableBeanMetadata metadata = registerComponentProcessor(context);
203 metadata.addProperty(propertyName, createValue(context, "true"));
208 private static MutableBeanMetadata registerComponentProcessor(ParserContext context) {
209 ComponentDefinitionRegistry registry = context.getComponentDefinitionRegistry();
210 MutableBeanMetadata metadata = (MutableBeanMetadata) registry.getComponentDefinition(COMPONENT_PROCESSOR_NAME);
211 if(metadata == null) {
212 metadata = context.createMetadata(MutableBeanMetadata.class);
213 metadata.setProcessor(true);
214 metadata.setId(COMPONENT_PROCESSOR_NAME);
215 metadata.setActivation(BeanMetadata.ACTIVATION_EAGER);
216 metadata.setScope(BeanMetadata.SCOPE_SINGLETON);
217 metadata.setRuntimeClass(ComponentProcessor.class);
218 metadata.setDestroyMethod("destroy");
219 metadata.addProperty("bundle", createRef(context, "blueprintBundle"));
220 metadata.addProperty("blueprintContainerRestartService", createServiceRef(context,
221 BlueprintContainerRestartService.class, null));
223 LOG.debug("Registering ComponentProcessor bean: {}", metadata);
225 registry.registerComponentDefinition(metadata);
231 private Metadata parseRpcImplementation(Element element, ParserContext context) {
232 registerRpcRegistryServiceRefBean(context);
234 MutableBeanMetadata metadata = context.createMetadata(MutableBeanMetadata.class);
235 metadata.setId(context.generateId());
236 metadata.setScope(BeanMetadata.SCOPE_SINGLETON);
237 metadata.setActivation(ReferenceMetadata.ACTIVATION_EAGER);
238 metadata.setRuntimeClass(RpcImplementationBean.class);
239 metadata.setInitMethod("init");
240 metadata.setDestroyMethod("destroy");
241 metadata.addProperty("bundle", createRef(context, "blueprintBundle"));
242 metadata.addProperty("rpcRegistry", createRef(context, RPC_REGISTRY_NAME));
243 metadata.addProperty("implementation", createRef(context, element.getAttribute(REF_ATTR)));
245 if(element.hasAttribute(INTERFACE)) {
246 metadata.addProperty("interfaceName", createValue(context, element.getAttribute(INTERFACE)));
249 LOG.debug("parseAddRpcImplementation returning {}", metadata);
254 private Metadata parseRoutedRpcImplementation(Element element, ParserContext context) {
255 registerRpcRegistryServiceRefBean(context);
256 registerRoutedRpcRegistrationConverter(context);
258 ComponentFactoryMetadata metadata = new RoutedRpcMetadata(getId(context, element),
259 element.getAttribute(INTERFACE), element.getAttribute(REF_ATTR));
261 LOG.debug("parseRoutedRpcImplementation returning {}", metadata);
266 private Metadata parseRpcService(Element element, ParserContext context) {
267 ComponentFactoryMetadata metadata = new RpcServiceMetadata(getId(context, element),
268 element.getAttribute(INTERFACE));
270 LOG.debug("parseRpcService returning {}", metadata);
275 private void registerRoutedRpcRegistrationConverter(ParserContext context) {
276 ComponentDefinitionRegistry registry = context.getComponentDefinitionRegistry();
277 if(registry.getComponentDefinition(ROUTED_RPC_REG_CONVERTER_NAME) == null) {
278 MutableBeanMetadata metadata = context.createMetadata(MutableBeanMetadata.class);
279 metadata.setId(ROUTED_RPC_REG_CONVERTER_NAME);
280 metadata.setScope(BeanMetadata.SCOPE_SINGLETON);
281 metadata.setActivation(ReferenceMetadata.ACTIVATION_LAZY);
282 metadata.setRuntimeClass(RoutedRpcRegistrationConverter.class);
283 registry.registerTypeConverter(metadata);
287 private void registerRpcRegistryServiceRefBean(ParserContext context) {
288 ComponentDefinitionRegistry registry = context.getComponentDefinitionRegistry();
289 if(registry.getComponentDefinition(RPC_REGISTRY_NAME) == null) {
290 MutableReferenceMetadata metadata = createServiceRef(context, RpcProviderRegistry.class, null);
291 metadata.setId(RPC_REGISTRY_NAME);
292 registry.registerComponentDefinition(metadata);
296 private Metadata parseNotificationListener(Element element, ParserContext context) {
297 registerNotificationServiceRefBean(context);
299 MutableBeanMetadata metadata = context.createMetadata(MutableBeanMetadata.class);
300 metadata.setId(context.generateId());
301 metadata.setScope(BeanMetadata.SCOPE_SINGLETON);
302 metadata.setActivation(ReferenceMetadata.ACTIVATION_EAGER);
303 metadata.setRuntimeClass(NotificationListenerBean.class);
304 metadata.setInitMethod("init");
305 metadata.setDestroyMethod("destroy");
306 metadata.addProperty("bundle", createRef(context, "blueprintBundle"));
307 metadata.addProperty("notificationService", createRef(context, NOTIFICATION_SERVICE_NAME));
308 metadata.addProperty("notificationListener", createRef(context, element.getAttribute(REF_ATTR)));
310 LOG.debug("parseNotificationListener returning {}", metadata);
315 private void registerNotificationServiceRefBean(ParserContext context) {
316 ComponentDefinitionRegistry registry = context.getComponentDefinitionRegistry();
317 if(registry.getComponentDefinition(NOTIFICATION_SERVICE_NAME) == null) {
318 MutableReferenceMetadata metadata = createServiceRef(context, NotificationService.class, null);
319 metadata.setId(NOTIFICATION_SERVICE_NAME);
320 registry.registerComponentDefinition(metadata);
324 private Metadata parseClusteredAppConfig(Element element, ParserContext context) {
325 LOG.debug("parseClusteredAppConfig");
327 // Find the default-config child element representing the default app config XML, if present.
328 Element defaultConfigElement = null;
329 NodeList children = element.getChildNodes();
330 for(int i = 0; i < children.getLength(); i++) {
331 Node child = children.item(i);
332 if(nodeNameEquals(child, DataStoreAppConfigMetadata.DEFAULT_CONFIG)) {
333 defaultConfigElement = (Element) child;
338 Element defaultAppConfigElement = null;
339 if(defaultConfigElement != null) {
340 // Find the CDATA element containing the default app config XML.
341 children = defaultConfigElement.getChildNodes();
342 for(int i = 0; i < children.getLength(); i++) {
343 Node child = children.item(i);
344 if(child.getNodeType() == Node.CDATA_SECTION_NODE) {
345 defaultAppConfigElement = parseXML(DataStoreAppConfigMetadata.DEFAULT_CONFIG, child.getTextContent());
351 return new DataStoreAppConfigMetadata(getId(context, element), element.getAttribute(
352 DataStoreAppConfigMetadata.BINDING_CLASS), element.getAttribute(
353 DataStoreAppConfigMetadata.LIST_KEY_VALUE), element.getAttribute(
354 DataStoreAppConfigMetadata.DEFAULT_CONFIG_FILE_NAME), parseUpdateStrategy(
355 element.getAttribute(UPDATE_STRATEGY_ATTR)), defaultAppConfigElement);
358 private UpdateStrategy parseUpdateStrategy(String updateStrategyValue) {
359 if (Strings.isNullOrEmpty(updateStrategyValue) ||
360 updateStrategyValue.equalsIgnoreCase(UpdateStrategy.RELOAD.name())) {
361 return UpdateStrategy.RELOAD;
362 } else if(updateStrategyValue.equalsIgnoreCase(UpdateStrategy.NONE.name())){
363 return UpdateStrategy.NONE;
365 LOG.warn("update-strategy {} not supported, using reload", updateStrategyValue);
366 return UpdateStrategy.RELOAD;
370 private Metadata parseSpecificReferenceList(Element element, ParserContext context) {
371 ComponentFactoryMetadata metadata = new SpecificReferenceListMetadata(getId(context, element),
372 element.getAttribute(INTERFACE));
374 LOG.debug("parseSpecificReferenceList returning {}", metadata);
379 private Metadata parseStaticReference(Element element, ParserContext context) {
380 ComponentFactoryMetadata metadata = new StaticReferenceMetadata(getId(context, element),
381 element.getAttribute(INTERFACE));
383 LOG.debug("parseStaticReference returning {}", metadata);
388 private Element parseXML(String name, String xml) {
389 DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
390 builderFactory.setNamespaceAware(true);
391 builderFactory.setCoalescing(true);
392 builderFactory.setIgnoringElementContentWhitespace(true);
393 builderFactory.setIgnoringComments(true);
396 return builderFactory.newDocumentBuilder().parse(new InputSource(new StringReader(xml))).getDocumentElement();
397 } catch(Exception e) {
398 throw new ComponentDefinitionException(String.format("Error %s parsing XML: %s", name, xml));
402 private static ValueMetadata createValue(ParserContext context, String value) {
403 MutableValueMetadata m = context.createMetadata(MutableValueMetadata.class);
404 m.setStringValue(value);
408 private static MutableReferenceMetadata createServiceRef(ParserContext context, Class<?> cls, String filter) {
409 MutableReferenceMetadata m = context.createMetadata(MutableReferenceMetadata.class);
410 m.setRuntimeInterface(cls);
411 m.setInterface(cls.getName());
412 m.setActivation(ReferenceMetadata.ACTIVATION_EAGER);
413 m.setAvailability(ReferenceMetadata.AVAILABILITY_MANDATORY);
422 private static RefMetadata createRef(ParserContext context, String id) {
423 MutableRefMetadata metadata = context.createMetadata(MutableRefMetadata.class);
424 metadata.setComponentId(id);
428 private static String getId(ParserContext context, Element element) {
429 if(element.hasAttribute(ID_ATTR)) {
430 return element.getAttribute(ID_ATTR);
432 return context.generateId();
436 private static boolean nodeNameEquals(Node node, String name) {
437 return name.equals(node.getNodeName()) || name.equals(node.getLocalName());