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;
15 import org.apache.aries.blueprint.ComponentDefinitionRegistry;
16 import org.apache.aries.blueprint.NamespaceHandler;
17 import org.apache.aries.blueprint.ParserContext;
18 import org.apache.aries.blueprint.mutable.MutableBeanMetadata;
19 import org.apache.aries.blueprint.mutable.MutableRefMetadata;
20 import org.apache.aries.blueprint.mutable.MutableReferenceMetadata;
21 import org.apache.aries.blueprint.mutable.MutableServiceMetadata;
22 import org.apache.aries.blueprint.mutable.MutableServiceReferenceMetadata;
23 import org.apache.aries.blueprint.mutable.MutableValueMetadata;
24 import org.opendaylight.controller.blueprint.BlueprintContainerRestartService;
25 import org.opendaylight.yangtools.util.xml.UntrustedXML;
26 import org.osgi.service.blueprint.container.ComponentDefinitionException;
27 import org.osgi.service.blueprint.reflect.BeanMetadata;
28 import org.osgi.service.blueprint.reflect.ComponentMetadata;
29 import org.osgi.service.blueprint.reflect.Metadata;
30 import org.osgi.service.blueprint.reflect.RefMetadata;
31 import org.osgi.service.blueprint.reflect.ReferenceMetadata;
32 import org.osgi.service.blueprint.reflect.ServiceMetadata;
33 import org.osgi.service.blueprint.reflect.ServiceReferenceMetadata;
34 import org.osgi.service.blueprint.reflect.ValueMetadata;
35 import org.slf4j.Logger;
36 import org.slf4j.LoggerFactory;
37 import org.w3c.dom.Attr;
38 import org.w3c.dom.Element;
39 import org.w3c.dom.Node;
40 import org.w3c.dom.NodeList;
41 import org.xml.sax.InputSource;
42 import org.xml.sax.SAXException;
45 * The NamespaceHandler for Opendaylight blueprint extensions.
47 * @author Thomas Pantelis
49 public final class OpendaylightNamespaceHandler implements NamespaceHandler {
50 public static final String NAMESPACE_1_0_0 = "http://opendaylight.org/xmlns/blueprint/v1.0.0";
52 private static final Logger LOG = LoggerFactory.getLogger(OpendaylightNamespaceHandler.class);
53 private static final String TYPE_ATTR = "type";
54 private static final String UPDATE_STRATEGY_ATTR = "update-strategy";
55 private static final String COMPONENT_PROCESSOR_NAME = ComponentProcessor.class.getName();
56 private static final String RESTART_DEPENDENTS_ON_UPDATES = "restart-dependents-on-updates";
57 private static final String USE_DEFAULT_FOR_REFERENCE_TYPES = "use-default-for-reference-types";
58 private static final String CLUSTERED_APP_CONFIG = "clustered-app-config";
59 private static final String ID_ATTR = "id";
61 @SuppressWarnings("rawtypes")
63 public Set<Class> getManagedClasses() {
68 public URL getSchemaLocation(final String namespace) {
69 if (NAMESPACE_1_0_0.equals(namespace)) {
70 URL url = getClass().getResource("/opendaylight-blueprint-ext-1.0.0.xsd");
71 LOG.debug("getSchemaLocation for {} returning URL {}", namespace, url);
79 public Metadata parse(final Element element, final ParserContext context) {
80 LOG.debug("In parse for {}", element);
82 if (nodeNameEquals(element, CLUSTERED_APP_CONFIG)) {
83 return parseClusteredAppConfig(element, context);
86 throw new ComponentDefinitionException("Unsupported standalone element: " + element.getNodeName());
90 public ComponentMetadata decorate(final Node node, final ComponentMetadata component, final ParserContext context) {
91 if (node instanceof Attr) {
92 if (nodeNameEquals(node, RESTART_DEPENDENTS_ON_UPDATES)) {
93 return decorateRestartDependentsOnUpdates((Attr) node, component, context);
94 } else if (nodeNameEquals(node, USE_DEFAULT_FOR_REFERENCE_TYPES)) {
95 return decorateUseDefaultForReferenceTypes((Attr) node, component, context);
96 } else if (nodeNameEquals(node, TYPE_ATTR)) {
97 if (component instanceof ServiceReferenceMetadata) {
98 return decorateServiceReferenceType((Attr) node, component, context);
99 } else if (component instanceof ServiceMetadata) {
100 return decorateServiceType((Attr)node, component, context);
103 throw new ComponentDefinitionException("Attribute " + node.getNodeName()
104 + " can only be used on a <reference>, <reference-list> or <service> element");
107 throw new ComponentDefinitionException("Unsupported attribute: " + node.getNodeName());
109 throw new ComponentDefinitionException("Unsupported node type: " + node);
113 private static ComponentMetadata decorateServiceType(final Attr attr, final ComponentMetadata component,
114 final ParserContext context) {
115 if (!(component instanceof MutableServiceMetadata service)) {
116 throw new ComponentDefinitionException("Expected an instanceof MutableServiceMetadata");
119 LOG.debug("decorateServiceType for {} - adding type property {}", service.getId(), attr.getValue());
121 service.addServiceProperty(createValue(context, TYPE_ATTR), createValue(context, attr.getValue()));
125 private static ComponentMetadata decorateServiceReferenceType(final Attr attr, final ComponentMetadata component,
126 final ParserContext context) {
127 if (!(component instanceof MutableServiceReferenceMetadata)) {
128 throw new ComponentDefinitionException("Expected an instanceof MutableServiceReferenceMetadata");
131 // We don't actually need the ComponentProcessor for augmenting the OSGi filter here but we create it
132 // to workaround an issue in Aries where it doesn't use the extended filter unless there's a
133 // Processor or ComponentDefinitionRegistryProcessor registered. This may actually be working as
134 // designed in Aries b/c the extended filter was really added to allow the OSGi filter to be
135 // substituted by a variable via the "cm:property-placeholder" processor. If so, it's a bit funky
136 // but as long as there's at least one processor registered, it correctly uses the extended filter.
137 registerComponentProcessor(context);
139 MutableServiceReferenceMetadata serviceRef = (MutableServiceReferenceMetadata)component;
140 String oldFilter = serviceRef.getExtendedFilter() == null ? null :
141 serviceRef.getExtendedFilter().getStringValue();
144 if (Strings.isNullOrEmpty(oldFilter)) {
145 filter = String.format("(type=%s)", attr.getValue());
147 filter = String.format("(&(%s)(type=%s))", oldFilter, attr.getValue());
150 LOG.debug("decorateServiceReferenceType for {} with type {}, old filter: {}, new filter: {}",
151 serviceRef.getId(), attr.getValue(), oldFilter, filter);
153 serviceRef.setExtendedFilter(createValue(context, filter));
157 private static ComponentMetadata decorateRestartDependentsOnUpdates(final Attr attr,
158 final ComponentMetadata component, final ParserContext context) {
159 return enableComponentProcessorProperty(attr, component, context, "restartDependentsOnUpdates");
162 private static ComponentMetadata decorateUseDefaultForReferenceTypes(final Attr attr,
163 final ComponentMetadata component, final ParserContext context) {
164 return enableComponentProcessorProperty(attr, component, context, "useDefaultForReferenceTypes");
167 private static ComponentMetadata enableComponentProcessorProperty(final Attr attr,
168 final ComponentMetadata component, final ParserContext context, final String propertyName) {
169 if (component != null) {
170 throw new ComponentDefinitionException("Attribute " + attr.getNodeName()
171 + " can only be used on the root <blueprint> element");
174 LOG.debug("Property {} = {}", propertyName, attr.getValue());
176 if (!Boolean.parseBoolean(attr.getValue())) {
180 MutableBeanMetadata metadata = registerComponentProcessor(context);
181 metadata.addProperty(propertyName, createValue(context, "true"));
186 private static MutableBeanMetadata registerComponentProcessor(final ParserContext context) {
187 ComponentDefinitionRegistry registry = context.getComponentDefinitionRegistry();
188 MutableBeanMetadata metadata = (MutableBeanMetadata) registry.getComponentDefinition(COMPONENT_PROCESSOR_NAME);
189 if (metadata == null) {
190 metadata = createBeanMetadata(context, COMPONENT_PROCESSOR_NAME, ComponentProcessor.class, false, true);
191 metadata.setProcessor(true);
192 addBlueprintBundleRefProperty(context, metadata);
193 metadata.addProperty("blueprintContainerRestartService", createServiceRef(context,
194 BlueprintContainerRestartService.class, null));
196 LOG.debug("Registering ComponentProcessor bean: {}", metadata);
198 registry.registerComponentDefinition(metadata);
204 private static Metadata parseClusteredAppConfig(final Element element, final ParserContext context) {
205 LOG.debug("parseClusteredAppConfig");
207 // Find the default-config child element representing the default app config XML, if present.
208 Element defaultConfigElement = null;
209 NodeList children = element.getChildNodes();
210 for (int i = 0; i < children.getLength(); i++) {
211 Node child = children.item(i);
212 if (nodeNameEquals(child, DataStoreAppConfigMetadata.DEFAULT_CONFIG)) {
213 defaultConfigElement = (Element) child;
218 Element defaultAppConfigElement = null;
219 if (defaultConfigElement != null) {
220 // Find the CDATA element containing the default app config XML.
221 children = defaultConfigElement.getChildNodes();
222 for (int i = 0; i < children.getLength(); i++) {
223 Node child = children.item(i);
224 if (child.getNodeType() == Node.CDATA_SECTION_NODE) {
225 defaultAppConfigElement = parseXML(DataStoreAppConfigMetadata.DEFAULT_CONFIG,
226 child.getTextContent());
232 return new DataStoreAppConfigMetadata(getId(context, element), element.getAttribute(
233 DataStoreAppConfigMetadata.BINDING_CLASS), element.getAttribute(
234 DataStoreAppConfigMetadata.LIST_KEY_VALUE), element.getAttribute(
235 DataStoreAppConfigMetadata.DEFAULT_CONFIG_FILE_NAME), parseUpdateStrategy(
236 element.getAttribute(UPDATE_STRATEGY_ATTR)), defaultAppConfigElement);
239 private static UpdateStrategy parseUpdateStrategy(final String updateStrategyValue) {
240 if (Strings.isNullOrEmpty(updateStrategyValue)
241 || updateStrategyValue.equalsIgnoreCase(UpdateStrategy.RELOAD.name())) {
242 return UpdateStrategy.RELOAD;
243 } else if (updateStrategyValue.equalsIgnoreCase(UpdateStrategy.NONE.name())) {
244 return UpdateStrategy.NONE;
246 LOG.warn("update-strategy {} not supported, using reload", updateStrategyValue);
247 return UpdateStrategy.RELOAD;
251 private static Element parseXML(final String name, final String xml) {
253 return UntrustedXML.newDocumentBuilder().parse(new InputSource(new StringReader(xml))).getDocumentElement();
254 } catch (SAXException | IOException e) {
255 throw new ComponentDefinitionException(String.format("Error %s parsing XML: %s", name, xml), e);
259 private static ValueMetadata createValue(final ParserContext context, final String value) {
260 MutableValueMetadata metadata = context.createMetadata(MutableValueMetadata.class);
261 metadata.setStringValue(value);
265 private static MutableReferenceMetadata createServiceRef(final ParserContext context, final Class<?> cls,
266 final String filter) {
267 MutableReferenceMetadata metadata = context.createMetadata(MutableReferenceMetadata.class);
268 metadata.setRuntimeInterface(cls);
269 metadata.setInterface(cls.getName());
270 metadata.setActivation(ReferenceMetadata.ACTIVATION_EAGER);
271 metadata.setAvailability(ReferenceMetadata.AVAILABILITY_MANDATORY);
273 if (filter != null) {
274 metadata.setFilter(filter);
280 private static RefMetadata createRef(final ParserContext context, final String id) {
281 MutableRefMetadata metadata = context.createMetadata(MutableRefMetadata.class);
282 metadata.setComponentId(id);
286 private static String getId(final ParserContext context, final Element element) {
287 if (element.hasAttribute(ID_ATTR)) {
288 return element.getAttribute(ID_ATTR);
290 return context.generateId();
294 private static boolean nodeNameEquals(final Node node, final String name) {
295 return name.equals(node.getNodeName()) || name.equals(node.getLocalName());
298 private static void addBlueprintBundleRefProperty(final ParserContext context, final MutableBeanMetadata metadata) {
299 metadata.addProperty("bundle", createRef(context, "blueprintBundle"));
302 private static MutableBeanMetadata createBeanMetadata(final ParserContext context, final String id,
303 final Class<?> runtimeClass, final boolean initMethod, final boolean destroyMethod) {
304 MutableBeanMetadata metadata = context.createMetadata(MutableBeanMetadata.class);
306 metadata.setScope(BeanMetadata.SCOPE_SINGLETON);
307 metadata.setActivation(ReferenceMetadata.ACTIVATION_EAGER);
308 metadata.setRuntimeClass(runtimeClass);
311 metadata.setInitMethod("init");
315 metadata.setDestroyMethod("destroy");