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.IOException;
12 import java.io.StringReader;
14 import java.util.Collections;
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.opendaylight.yangtools.util.xml.UntrustedXML;
30 import org.osgi.service.blueprint.container.ComponentDefinitionException;
31 import org.osgi.service.blueprint.reflect.BeanMetadata;
32 import org.osgi.service.blueprint.reflect.ComponentMetadata;
33 import org.osgi.service.blueprint.reflect.Metadata;
34 import org.osgi.service.blueprint.reflect.RefMetadata;
35 import org.osgi.service.blueprint.reflect.ReferenceMetadata;
36 import org.osgi.service.blueprint.reflect.ServiceMetadata;
37 import org.osgi.service.blueprint.reflect.ServiceReferenceMetadata;
38 import org.osgi.service.blueprint.reflect.ValueMetadata;
39 import org.slf4j.Logger;
40 import org.slf4j.LoggerFactory;
41 import org.w3c.dom.Attr;
42 import org.w3c.dom.Element;
43 import org.w3c.dom.Node;
44 import org.w3c.dom.NodeList;
45 import org.xml.sax.InputSource;
46 import org.xml.sax.SAXException;
49 * The NamespaceHandler for Opendaylight blueprint extensions.
51 * @author Thomas Pantelis
53 public final class OpendaylightNamespaceHandler implements NamespaceHandler {
54 public static final String NAMESPACE_1_0_0 = "http://opendaylight.org/xmlns/blueprint/v1.0.0";
55 static final String ROUTED_RPC_REG_CONVERTER_NAME = "org.opendaylight.blueprint.RoutedRpcRegConverter";
56 static final String RPC_REGISTRY_NAME = "org.opendaylight.blueprint.RpcRegistry";
57 static final String NOTIFICATION_SERVICE_NAME = "org.opendaylight.blueprint.NotificationService";
58 static final String TYPE_ATTR = "type";
59 static final String UPDATE_STRATEGY_ATTR = "update-strategy";
61 private static final Logger LOG = LoggerFactory.getLogger(OpendaylightNamespaceHandler.class);
62 private static final String COMPONENT_PROCESSOR_NAME = ComponentProcessor.class.getName();
63 private static final String RESTART_DEPENDENTS_ON_UPDATES = "restart-dependents-on-updates";
64 private static final String USE_DEFAULT_FOR_REFERENCE_TYPES = "use-default-for-reference-types";
65 private static final String CLUSTERED_APP_CONFIG = "clustered-app-config";
66 private static final String INTERFACE = "interface";
67 private static final String REF_ATTR = "ref";
68 private static final String ID_ATTR = "id";
69 private static final String RPC_SERVICE = "rpc-service";
70 private static final String SPECIFIC_SERVICE_REF_LIST = "specific-reference-list";
71 private static final String STATIC_REFERENCE = "static-reference";
73 @SuppressWarnings("rawtypes")
75 public Set<Class> getManagedClasses() {
76 return Collections.emptySet();
80 public URL getSchemaLocation(final String namespace) {
81 if (NAMESPACE_1_0_0.equals(namespace)) {
82 URL url = getClass().getResource("/opendaylight-blueprint-ext-1.0.0.xsd");
83 LOG.debug("getSchemaLocation for {} returning URL {}", namespace, url);
91 public Metadata parse(final Element element, final ParserContext context) {
92 LOG.debug("In parse for {}", element);
94 if (nodeNameEquals(element, RpcImplementationBean.RPC_IMPLEMENTATION)) {
95 return parseRpcImplementation(element, context);
96 } else if (nodeNameEquals(element, RoutedRpcMetadata.ROUTED_RPC_IMPLEMENTATION)) {
97 return parseRoutedRpcImplementation(element, context);
98 } else if (nodeNameEquals(element, RPC_SERVICE)) {
99 return parseRpcService(element, context);
100 } else if (nodeNameEquals(element, NotificationListenerBean.NOTIFICATION_LISTENER)) {
101 return parseNotificationListener(element, context);
102 } else if (nodeNameEquals(element, CLUSTERED_APP_CONFIG)) {
103 return parseClusteredAppConfig(element, context);
104 } else if (nodeNameEquals(element, SPECIFIC_SERVICE_REF_LIST)) {
105 return parseSpecificReferenceList(element, context);
106 } else if (nodeNameEquals(element, STATIC_REFERENCE)) {
107 return parseStaticReference(element, context);
110 throw new ComponentDefinitionException("Unsupported standalone element: " + element.getNodeName());
114 public ComponentMetadata decorate(final Node node, final ComponentMetadata component, final ParserContext context) {
115 if (node instanceof Attr) {
116 if (nodeNameEquals(node, RESTART_DEPENDENTS_ON_UPDATES)) {
117 return decorateRestartDependentsOnUpdates((Attr) node, component, context);
118 } else if (nodeNameEquals(node, USE_DEFAULT_FOR_REFERENCE_TYPES)) {
119 return decorateUseDefaultForReferenceTypes((Attr) node, component, context);
120 } else if (nodeNameEquals(node, TYPE_ATTR)) {
121 if (component instanceof ServiceReferenceMetadata) {
122 return decorateServiceReferenceType((Attr) node, component, context);
123 } else if (component instanceof ServiceMetadata) {
124 return decorateServiceType((Attr)node, component, context);
127 throw new ComponentDefinitionException("Attribute " + node.getNodeName()
128 + " can only be used on a <reference>, <reference-list> or <service> element");
131 throw new ComponentDefinitionException("Unsupported attribute: " + node.getNodeName());
133 throw new ComponentDefinitionException("Unsupported node type: " + node);
137 private static ComponentMetadata decorateServiceType(final Attr attr, final ComponentMetadata component,
138 final ParserContext context) {
139 if (!(component instanceof MutableServiceMetadata)) {
140 throw new ComponentDefinitionException("Expected an instanceof MutableServiceMetadata");
143 MutableServiceMetadata service = (MutableServiceMetadata)component;
145 LOG.debug("decorateServiceType for {} - adding type property {}", service.getId(), attr.getValue());
147 service.addServiceProperty(createValue(context, TYPE_ATTR), createValue(context, attr.getValue()));
151 private static ComponentMetadata decorateServiceReferenceType(final Attr attr, final ComponentMetadata component,
152 final ParserContext context) {
153 if (!(component instanceof MutableServiceReferenceMetadata)) {
154 throw new ComponentDefinitionException("Expected an instanceof MutableServiceReferenceMetadata");
157 // We don't actually need the ComponentProcessor for augmenting the OSGi filter here but we create it
158 // to workaround an issue in Aries where it doesn't use the extended filter unless there's a
159 // Processor or ComponentDefinitionRegistryProcessor registered. This may actually be working as
160 // designed in Aries b/c the extended filter was really added to allow the OSGi filter to be
161 // substituted by a variable via the "cm:property-placeholder" processor. If so, it's a bit funky
162 // but as long as there's at least one processor registered, it correctly uses the extended filter.
163 registerComponentProcessor(context);
165 MutableServiceReferenceMetadata serviceRef = (MutableServiceReferenceMetadata)component;
166 String oldFilter = serviceRef.getExtendedFilter() == null ? null :
167 serviceRef.getExtendedFilter().getStringValue();
170 if (Strings.isNullOrEmpty(oldFilter)) {
171 filter = String.format("(type=%s)", attr.getValue());
173 filter = String.format("(&(%s)(type=%s))", oldFilter, attr.getValue());
176 LOG.debug("decorateServiceReferenceType for {} with type {}, old filter: {}, new filter: {}",
177 serviceRef.getId(), attr.getValue(), oldFilter, filter);
179 serviceRef.setExtendedFilter(createValue(context, filter));
183 private static ComponentMetadata decorateRestartDependentsOnUpdates(final Attr attr,
184 final ComponentMetadata component, final ParserContext context) {
185 return enableComponentProcessorProperty(attr, component, context, "restartDependentsOnUpdates");
188 private static ComponentMetadata decorateUseDefaultForReferenceTypes(final Attr attr,
189 final ComponentMetadata component, final ParserContext context) {
190 return enableComponentProcessorProperty(attr, component, context, "useDefaultForReferenceTypes");
193 private static ComponentMetadata enableComponentProcessorProperty(final Attr attr,
194 final ComponentMetadata component, final ParserContext context, final String propertyName) {
195 if (component != null) {
196 throw new ComponentDefinitionException("Attribute " + attr.getNodeName()
197 + " can only be used on the root <blueprint> element");
200 LOG.debug("{}: {}", propertyName, attr.getValue());
202 if (!Boolean.parseBoolean(attr.getValue())) {
206 MutableBeanMetadata metadata = registerComponentProcessor(context);
207 metadata.addProperty(propertyName, createValue(context, "true"));
212 private static MutableBeanMetadata registerComponentProcessor(final ParserContext context) {
213 ComponentDefinitionRegistry registry = context.getComponentDefinitionRegistry();
214 MutableBeanMetadata metadata = (MutableBeanMetadata) registry.getComponentDefinition(COMPONENT_PROCESSOR_NAME);
215 if (metadata == null) {
216 metadata = context.createMetadata(MutableBeanMetadata.class);
217 metadata.setProcessor(true);
218 metadata.setId(COMPONENT_PROCESSOR_NAME);
219 metadata.setActivation(BeanMetadata.ACTIVATION_EAGER);
220 metadata.setScope(BeanMetadata.SCOPE_SINGLETON);
221 metadata.setRuntimeClass(ComponentProcessor.class);
222 metadata.setDestroyMethod("destroy");
223 metadata.addProperty("bundle", createRef(context, "blueprintBundle"));
224 metadata.addProperty("blueprintContainerRestartService", createServiceRef(context,
225 BlueprintContainerRestartService.class, null));
227 LOG.debug("Registering ComponentProcessor bean: {}", metadata);
229 registry.registerComponentDefinition(metadata);
235 private static Metadata parseRpcImplementation(final Element element, final ParserContext context) {
236 registerRpcRegistryServiceRefBean(context);
238 MutableBeanMetadata metadata = context.createMetadata(MutableBeanMetadata.class);
239 metadata.setId(context.generateId());
240 metadata.setScope(BeanMetadata.SCOPE_SINGLETON);
241 metadata.setActivation(ReferenceMetadata.ACTIVATION_EAGER);
242 metadata.setRuntimeClass(RpcImplementationBean.class);
243 metadata.setInitMethod("init");
244 metadata.setDestroyMethod("destroy");
245 metadata.addProperty("bundle", createRef(context, "blueprintBundle"));
246 metadata.addProperty("rpcRegistry", createRef(context, RPC_REGISTRY_NAME));
247 metadata.addProperty("implementation", createRef(context, element.getAttribute(REF_ATTR)));
249 if (element.hasAttribute(INTERFACE)) {
250 metadata.addProperty("interfaceName", createValue(context, element.getAttribute(INTERFACE)));
253 LOG.debug("parseAddRpcImplementation returning {}", metadata);
258 private static Metadata parseRoutedRpcImplementation(final Element element, final ParserContext context) {
259 registerRpcRegistryServiceRefBean(context);
260 registerRoutedRpcRegistrationConverter(context);
262 ComponentFactoryMetadata metadata = new RoutedRpcMetadata(getId(context, element),
263 element.getAttribute(INTERFACE), element.getAttribute(REF_ATTR));
265 LOG.debug("parseRoutedRpcImplementation returning {}", metadata);
270 private static Metadata parseRpcService(final Element element, final ParserContext context) {
271 ComponentFactoryMetadata metadata = new RpcServiceMetadata(getId(context, element),
272 element.getAttribute(INTERFACE));
274 LOG.debug("parseRpcService returning {}", metadata);
279 private static void registerRoutedRpcRegistrationConverter(final ParserContext context) {
280 ComponentDefinitionRegistry registry = context.getComponentDefinitionRegistry();
281 if (registry.getComponentDefinition(ROUTED_RPC_REG_CONVERTER_NAME) == null) {
282 MutableBeanMetadata metadata = context.createMetadata(MutableBeanMetadata.class);
283 metadata.setId(ROUTED_RPC_REG_CONVERTER_NAME);
284 metadata.setScope(BeanMetadata.SCOPE_SINGLETON);
285 metadata.setActivation(ReferenceMetadata.ACTIVATION_LAZY);
286 metadata.setRuntimeClass(RoutedRpcRegistrationConverter.class);
287 registry.registerTypeConverter(metadata);
291 private static void registerRpcRegistryServiceRefBean(final ParserContext context) {
292 ComponentDefinitionRegistry registry = context.getComponentDefinitionRegistry();
293 if (registry.getComponentDefinition(RPC_REGISTRY_NAME) == null) {
294 MutableReferenceMetadata metadata = createServiceRef(context, RpcProviderRegistry.class, null);
295 metadata.setId(RPC_REGISTRY_NAME);
296 registry.registerComponentDefinition(metadata);
300 private static Metadata parseNotificationListener(final Element element, final ParserContext context) {
301 registerNotificationServiceRefBean(context);
303 MutableBeanMetadata metadata = context.createMetadata(MutableBeanMetadata.class);
304 metadata.setId(context.generateId());
305 metadata.setScope(BeanMetadata.SCOPE_SINGLETON);
306 metadata.setActivation(ReferenceMetadata.ACTIVATION_EAGER);
307 metadata.setRuntimeClass(NotificationListenerBean.class);
308 metadata.setInitMethod("init");
309 metadata.setDestroyMethod("destroy");
310 metadata.addProperty("bundle", createRef(context, "blueprintBundle"));
311 metadata.addProperty("notificationService", createRef(context, NOTIFICATION_SERVICE_NAME));
312 metadata.addProperty("notificationListener", createRef(context, element.getAttribute(REF_ATTR)));
314 LOG.debug("parseNotificationListener returning {}", metadata);
319 private static void registerNotificationServiceRefBean(final ParserContext context) {
320 ComponentDefinitionRegistry registry = context.getComponentDefinitionRegistry();
321 if (registry.getComponentDefinition(NOTIFICATION_SERVICE_NAME) == null) {
322 MutableReferenceMetadata metadata = createServiceRef(context, NotificationService.class, null);
323 metadata.setId(NOTIFICATION_SERVICE_NAME);
324 registry.registerComponentDefinition(metadata);
328 private static Metadata parseClusteredAppConfig(final Element element, final ParserContext context) {
329 LOG.debug("parseClusteredAppConfig");
331 // Find the default-config child element representing the default app config XML, if present.
332 Element defaultConfigElement = null;
333 NodeList children = element.getChildNodes();
334 for (int i = 0; i < children.getLength(); i++) {
335 Node child = children.item(i);
336 if (nodeNameEquals(child, DataStoreAppConfigMetadata.DEFAULT_CONFIG)) {
337 defaultConfigElement = (Element) child;
342 Element defaultAppConfigElement = null;
343 if (defaultConfigElement != null) {
344 // Find the CDATA element containing the default app config XML.
345 children = defaultConfigElement.getChildNodes();
346 for (int i = 0; i < children.getLength(); i++) {
347 Node child = children.item(i);
348 if (child.getNodeType() == Node.CDATA_SECTION_NODE) {
349 defaultAppConfigElement = parseXML(DataStoreAppConfigMetadata.DEFAULT_CONFIG,
350 child.getTextContent());
356 return new DataStoreAppConfigMetadata(getId(context, element), element.getAttribute(
357 DataStoreAppConfigMetadata.BINDING_CLASS), element.getAttribute(
358 DataStoreAppConfigMetadata.LIST_KEY_VALUE), element.getAttribute(
359 DataStoreAppConfigMetadata.DEFAULT_CONFIG_FILE_NAME), parseUpdateStrategy(
360 element.getAttribute(UPDATE_STRATEGY_ATTR)), defaultAppConfigElement);
363 private static UpdateStrategy parseUpdateStrategy(final String updateStrategyValue) {
364 if (Strings.isNullOrEmpty(updateStrategyValue)
365 || updateStrategyValue.equalsIgnoreCase(UpdateStrategy.RELOAD.name())) {
366 return UpdateStrategy.RELOAD;
367 } else if (updateStrategyValue.equalsIgnoreCase(UpdateStrategy.NONE.name())) {
368 return UpdateStrategy.NONE;
370 LOG.warn("update-strategy {} not supported, using reload", updateStrategyValue);
371 return UpdateStrategy.RELOAD;
375 private static Metadata parseSpecificReferenceList(final Element element, final ParserContext context) {
376 ComponentFactoryMetadata metadata = new SpecificReferenceListMetadata(getId(context, element),
377 element.getAttribute(INTERFACE));
379 LOG.debug("parseSpecificReferenceList returning {}", metadata);
384 private static Metadata parseStaticReference(final Element element, final ParserContext context) {
385 ComponentFactoryMetadata metadata = new StaticReferenceMetadata(getId(context, element),
386 element.getAttribute(INTERFACE));
388 LOG.debug("parseStaticReference returning {}", metadata);
393 private static Element parseXML(final String name, final String xml) {
395 return UntrustedXML.newDocumentBuilder().parse(new InputSource(new StringReader(xml))).getDocumentElement();
396 } catch (SAXException | IOException e) {
397 throw new ComponentDefinitionException(String.format("Error %s parsing XML: %s", name, xml), e);
401 private static ValueMetadata createValue(final ParserContext context, final String value) {
402 MutableValueMetadata metadata = context.createMetadata(MutableValueMetadata.class);
403 metadata.setStringValue(value);
407 private static MutableReferenceMetadata createServiceRef(final ParserContext context, final Class<?> cls,
408 final String filter) {
409 MutableReferenceMetadata metadata = context.createMetadata(MutableReferenceMetadata.class);
410 metadata.setRuntimeInterface(cls);
411 metadata.setInterface(cls.getName());
412 metadata.setActivation(ReferenceMetadata.ACTIVATION_EAGER);
413 metadata.setAvailability(ReferenceMetadata.AVAILABILITY_MANDATORY);
415 if (filter != null) {
416 metadata.setFilter(filter);
422 private static RefMetadata createRef(final ParserContext context, final String id) {
423 MutableRefMetadata metadata = context.createMetadata(MutableRefMetadata.class);
424 metadata.setComponentId(id);
428 private static String getId(final ParserContext context, final Element element) {
429 if (element.hasAttribute(ID_ATTR)) {
430 return element.getAttribute(ID_ATTR);
432 return context.generateId();
436 private static boolean nodeNameEquals(final Node node, final String name) {
437 return name.equals(node.getNodeName()) || name.equals(node.getLocalName());