/*
* Copyright (c) 2016 Brocade Communications Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.controller.blueprint.ext;
import com.google.common.base.Strings;
import java.io.IOException;
import java.io.StringReader;
import java.net.URL;
import java.util.Collections;
import java.util.Set;
import org.apache.aries.blueprint.ComponentDefinitionRegistry;
import org.apache.aries.blueprint.NamespaceHandler;
import org.apache.aries.blueprint.ParserContext;
import org.apache.aries.blueprint.ext.ComponentFactoryMetadata;
import org.apache.aries.blueprint.mutable.MutableBeanMetadata;
import org.apache.aries.blueprint.mutable.MutableRefMetadata;
import org.apache.aries.blueprint.mutable.MutableReferenceMetadata;
import org.apache.aries.blueprint.mutable.MutableServiceMetadata;
import org.apache.aries.blueprint.mutable.MutableServiceReferenceMetadata;
import org.apache.aries.blueprint.mutable.MutableValueMetadata;
import org.opendaylight.controller.blueprint.BlueprintContainerRestartService;
import org.opendaylight.controller.md.sal.binding.api.NotificationService;
import org.opendaylight.controller.md.sal.dom.api.DOMRpcProviderService;
import org.opendaylight.controller.sal.binding.api.RpcProviderRegistry;
import org.opendaylight.controller.sal.core.api.model.SchemaService;
import org.opendaylight.yangtools.util.xml.UntrustedXML;
import org.osgi.service.blueprint.container.ComponentDefinitionException;
import org.osgi.service.blueprint.reflect.BeanMetadata;
import org.osgi.service.blueprint.reflect.ComponentMetadata;
import org.osgi.service.blueprint.reflect.Metadata;
import org.osgi.service.blueprint.reflect.RefMetadata;
import org.osgi.service.blueprint.reflect.ReferenceMetadata;
import org.osgi.service.blueprint.reflect.ServiceMetadata;
import org.osgi.service.blueprint.reflect.ServiceReferenceMetadata;
import org.osgi.service.blueprint.reflect.ValueMetadata;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/**
* The NamespaceHandler for Opendaylight blueprint extensions.
*
* @author Thomas Pantelis
*/
public final class OpendaylightNamespaceHandler implements NamespaceHandler {
public static final String NAMESPACE_1_0_0 = "http://opendaylight.org/xmlns/blueprint/v1.0.0";
static final String ROUTED_RPC_REG_CONVERTER_NAME = "org.opendaylight.blueprint.RoutedRpcRegConverter";
static final String RPC_PROVIDER_SERVICE_NAME = "org.opendaylight.blueprint.DOMRpcProviderService";
static final String RPC_REGISTRY_NAME = "org.opendaylight.blueprint.RpcRegistry";
static final String SCHEMA_SERVICE_NAME = "org.opendaylight.blueprint.SchemaService";
static final String NOTIFICATION_SERVICE_NAME = "org.opendaylight.blueprint.NotificationService";
static final String TYPE_ATTR = "type";
static final String UPDATE_STRATEGY_ATTR = "update-strategy";
private static final Logger LOG = LoggerFactory.getLogger(OpendaylightNamespaceHandler.class);
private static final String COMPONENT_PROCESSOR_NAME = ComponentProcessor.class.getName();
private static final String RESTART_DEPENDENTS_ON_UPDATES = "restart-dependents-on-updates";
private static final String USE_DEFAULT_FOR_REFERENCE_TYPES = "use-default-for-reference-types";
private static final String CLUSTERED_APP_CONFIG = "clustered-app-config";
private static final String INTERFACE = "interface";
private static final String REF_ATTR = "ref";
private static final String ID_ATTR = "id";
private static final String RPC_SERVICE = "rpc-service";
private static final String ACTION_SERVICE = "action-service";
private static final String SPECIFIC_SERVICE_REF_LIST = "specific-reference-list";
private static final String STATIC_REFERENCE = "static-reference";
@SuppressWarnings("rawtypes")
@Override
public Set<Class> getManagedClasses() {
return Collections.emptySet();
}
@Override
public URL getSchemaLocation(final String namespace) {
if (NAMESPACE_1_0_0.equals(namespace)) {
URL url = getClass().getResource("/opendaylight-blueprint-ext-1.0.0.xsd");
LOG.debug("getSchemaLocation for {} returning URL {}", namespace, url);
return url;
}
return null;
}
@Override
public Metadata parse(final Element element, final ParserContext context) {
LOG.debug("In parse for {}", element);
if (nodeNameEquals(element, RpcImplementationBean.RPC_IMPLEMENTATION)) {
return parseRpcImplementation(element, context);
} else if (nodeNameEquals(element, RoutedRpcMetadata.ROUTED_RPC_IMPLEMENTATION)) {
return parseRoutedRpcImplementation(element, context);
} else if (nodeNameEquals(element, RPC_SERVICE)) {
return parseRpcService(element, context);
} else if (nodeNameEquals(element, NotificationListenerBean.NOTIFICATION_LISTENER)) {
return parseNotificationListener(element, context);
} else if (nodeNameEquals(element, CLUSTERED_APP_CONFIG)) {
return parseClusteredAppConfig(element, context);
} else if (nodeNameEquals(element, SPECIFIC_SERVICE_REF_LIST)) {
return parseSpecificReferenceList(element, context);
} else if (nodeNameEquals(element, STATIC_REFERENCE)) {
return parseStaticReference(element, context);
} else if (nodeNameEquals(element, ACTION_SERVICE)) {
return parseActionService(element, context);
} else if (nodeNameEquals(element, ActionProviderBean.ACTION_PROVIDER)) {
return parseActionProvider(element, context);
}
throw new ComponentDefinitionException("Unsupported standalone element: " + element.getNodeName());
}
@Override
public ComponentMetadata decorate(final Node node, final ComponentMetadata component, final ParserContext context) {
if (node instanceof Attr) {
if (nodeNameEquals(node, RESTART_DEPENDENTS_ON_UPDATES)) {
return decorateRestartDependentsOnUpdates((Attr) node, component, context);
} else if (nodeNameEquals(node, USE_DEFAULT_FOR_REFERENCE_TYPES)) {
return decorateUseDefaultForReferenceTypes((Attr) node, component, context);
} else if (nodeNameEquals(node, TYPE_ATTR)) {
if (component instanceof ServiceReferenceMetadata) {
return decorateServiceReferenceType((Attr) node, component, context);
} else if (component instanceof ServiceMetadata) {
return decorateServiceType((Attr)node, component, context);
}
throw new ComponentDefinitionException("Attribute " + node.getNodeName()
+ " can only be used on a <reference>, <reference-list> or <service> element");
}
throw new ComponentDefinitionException("Unsupported attribute: " + node.getNodeName());
} else {
throw new ComponentDefinitionException("Unsupported node type: " + node);
}
}
private static ComponentMetadata decorateServiceType(final Attr attr, final ComponentMetadata component,
final ParserContext context) {
if (!(component instanceof MutableServiceMetadata)) {
throw new ComponentDefinitionException("Expected an instanceof MutableServiceMetadata");
}
MutableServiceMetadata service = (MutableServiceMetadata)component;
LOG.debug("decorateServiceType for {} - adding type property {}", service.getId(), attr.getValue());
service.addServiceProperty(createValue(context, TYPE_ATTR), createValue(context, attr.getValue()));
return component;
}
private static ComponentMetadata decorateServiceReferenceType(final Attr attr, final ComponentMetadata component,
final ParserContext context) {
if (!(component instanceof MutableServiceReferenceMetadata)) {
throw new ComponentDefinitionException("Expected an instanceof MutableServiceReferenceMetadata");
}
// We don't actually need the ComponentProcessor for augmenting the OSGi filter here but we create it
// to workaround an issue in Aries where it doesn't use the extended filter unless there's a
// Processor or ComponentDefinitionRegistryProcessor registered. This may actually be working as
// designed in Aries b/c the extended filter was really added to allow the OSGi filter to be
// substituted by a variable via the "cm:property-placeholder" processor. If so, it's a bit funky
// but as long as there's at least one processor registered, it correctly uses the extended filter.
registerComponentProcessor(context);
MutableServiceReferenceMetadata serviceRef = (MutableServiceReferenceMetadata)component;
String oldFilter = serviceRef.getExtendedFilter() == null ? null :
serviceRef.getExtendedFilter().getStringValue();
String filter;
if (Strings.isNullOrEmpty(oldFilter)) {
filter = String.format("(type=%s)", attr.getValue());
} else {
filter = String.format("(&(%s)(type=%s))", oldFilter, attr.getValue());
}
LOG.debug("decorateServiceReferenceType for {} with type {}, old filter: {}, new filter: {}",
serviceRef.getId(), attr.getValue(), oldFilter, filter);
serviceRef.setExtendedFilter(createValue(context, filter));
return component;
}
private static ComponentMetadata decorateRestartDependentsOnUpdates(final Attr attr,
final ComponentMetadata component, final ParserContext context) {
return enableComponentProcessorProperty(attr, component, context, "restartDependentsOnUpdates");
}
private static ComponentMetadata decorateUseDefaultForReferenceTypes(final Attr attr,
final ComponentMetadata component, final ParserContext context) {
return enableComponentProcessorProperty(attr, component, context, "useDefaultForReferenceTypes");
}
private static ComponentMetadata enableComponentProcessorProperty(final Attr attr,
final ComponentMetadata component, final ParserContext context, final String propertyName) {
if (component != null) {
throw new ComponentDefinitionException("Attribute " + attr.getNodeName()
+ " can only be used on the root <blueprint> element");
}
LOG.debug("{}: {}", propertyName, attr.getValue());
if (!Boolean.parseBoolean(attr.getValue())) {
return component;
}
MutableBeanMetadata metadata = registerComponentProcessor(context);
metadata.addProperty(propertyName, createValue(context, "true"));
return component;
}
private static MutableBeanMetadata registerComponentProcessor(final ParserContext context) {
ComponentDefinitionRegistry registry = context.getComponentDefinitionRegistry();
MutableBeanMetadata metadata = (MutableBeanMetadata) registry.getComponentDefinition(COMPONENT_PROCESSOR_NAME);
if (metadata == null) {
metadata = context.createMetadata(MutableBeanMetadata.class);
metadata.setProcessor(true);
metadata.setId(COMPONENT_PROCESSOR_NAME);
metadata.setActivation(BeanMetadata.ACTIVATION_EAGER);
metadata.setScope(BeanMetadata.SCOPE_SINGLETON);
metadata.setRuntimeClass(ComponentProcessor.class);
metadata.setDestroyMethod("destroy");
metadata.addProperty("bundle", createRef(context, "blueprintBundle"));
metadata.addProperty("blueprintContainerRestartService", createServiceRef(context,
BlueprintContainerRestartService.class, null));
LOG.debug("Registering ComponentProcessor bean: {}", metadata);
registry.registerComponentDefinition(metadata);
}
return metadata;
}
private static Metadata parseActionProvider(final Element element, final ParserContext context) {
registerRpcProviderServiceRefBean(context);
registerRpcRegistryServiceRefBean(context);
registerSchemaServiceRefBean(context);
MutableBeanMetadata metadata = context.createMetadata(MutableBeanMetadata.class);
metadata.setId(context.generateId());
metadata.setScope(BeanMetadata.SCOPE_SINGLETON);
metadata.setActivation(ReferenceMetadata.ACTIVATION_EAGER);
metadata.setRuntimeClass(ActionProviderBean.class);
metadata.setInitMethod("init");
metadata.setDestroyMethod("destroy");
metadata.addProperty("bundle", createRef(context, "blueprintBundle"));
metadata.addProperty("rpcProviderService", createRef(context, RPC_PROVIDER_SERVICE_NAME));
metadata.addProperty("rpcRegistry", createRef(context, RPC_REGISTRY_NAME));
metadata.addProperty("schemaService", createRef(context, SCHEMA_SERVICE_NAME));
metadata.addProperty("interfaceName", createValue(context, element.getAttribute(INTERFACE)));
if (element.hasAttribute(REF_ATTR)) {
metadata.addProperty("implementation", createRef(context, element.getAttribute(REF_ATTR)));
}
LOG.debug("parseActionProvider returning {}", metadata);
return metadata;
}
private static Metadata parseRpcImplementation(final Element element, final ParserContext context) {
registerRpcRegistryServiceRefBean(context);
MutableBeanMetadata metadata = context.createMetadata(MutableBeanMetadata.class);
metadata.setId(context.generateId());
metadata.setScope(BeanMetadata.SCOPE_SINGLETON);
metadata.setActivation(ReferenceMetadata.ACTIVATION_EAGER);
metadata.setRuntimeClass(RpcImplementationBean.class);
metadata.setInitMethod("init");
metadata.setDestroyMethod("destroy");
metadata.addProperty("bundle", createRef(context, "blueprintBundle"));
metadata.addProperty("rpcRegistry", createRef(context, RPC_REGISTRY_NAME));
metadata.addProperty("implementation", createRef(context, element.getAttribute(REF_ATTR)));
if (element.hasAttribute(INTERFACE)) {
metadata.addProperty("interfaceName", createValue(context, element.getAttribute(INTERFACE)));
}
LOG.debug("parseRpcImplementation returning {}", metadata);
return metadata;
}
private static Metadata parseRoutedRpcImplementation(final Element element, final ParserContext context) {
registerRpcRegistryServiceRefBean(context);
registerRoutedRpcRegistrationConverter(context);
ComponentFactoryMetadata metadata = new RoutedRpcMetadata(getId(context, element),
element.getAttribute(INTERFACE), element.getAttribute(REF_ATTR));
LOG.debug("parseRoutedRpcImplementation returning {}", metadata);
return metadata;
}
private static Metadata parseActionService(final Element element, final ParserContext context) {
ComponentFactoryMetadata metadata = new ActionServiceMetadata(getId(context, element),
element.getAttribute(INTERFACE));
LOG.debug("parseActionService returning {}", metadata);
return metadata;
}
private static Metadata parseRpcService(final Element element, final ParserContext context) {
ComponentFactoryMetadata metadata = new RpcServiceMetadata(getId(context, element),
element.getAttribute(INTERFACE));
LOG.debug("parseRpcService returning {}", metadata);
return metadata;
}
private static void registerRoutedRpcRegistrationConverter(final ParserContext context) {
ComponentDefinitionRegistry registry = context.getComponentDefinitionRegistry();
if (registry.getComponentDefinition(ROUTED_RPC_REG_CONVERTER_NAME) == null) {
MutableBeanMetadata metadata = context.createMetadata(MutableBeanMetadata.class);
metadata.setId(ROUTED_RPC_REG_CONVERTER_NAME);
metadata.setScope(BeanMetadata.SCOPE_SINGLETON);
metadata.setActivation(ReferenceMetadata.ACTIVATION_LAZY);
metadata.setRuntimeClass(RoutedRpcRegistrationConverter.class);
registry.registerTypeConverter(metadata);
}
}
private static void registerRpcProviderServiceRefBean(final ParserContext context) {
registerRefBean(context, RPC_PROVIDER_SERVICE_NAME, DOMRpcProviderService.class);
}
private static void registerRpcRegistryServiceRefBean(final ParserContext context) {
registerRefBean(context, RPC_REGISTRY_NAME, RpcProviderRegistry.class);
}
private static void registerSchemaServiceRefBean(final ParserContext context) {
registerRefBean(context, SCHEMA_SERVICE_NAME, SchemaService.class);
}
private static void registerRefBean(final ParserContext context, final String name, final Class<?> clazz) {
ComponentDefinitionRegistry registry = context.getComponentDefinitionRegistry();
if (registry.getComponentDefinition(name) == null) {
MutableReferenceMetadata metadata = createServiceRef(context, clazz, null);
metadata.setId(name);
registry.registerComponentDefinition(metadata);
}
}
private static Metadata parseNotificationListener(final Element element, final ParserContext context) {
registerNotificationServiceRefBean(context);
MutableBeanMetadata metadata = context.createMetadata(MutableBeanMetadata.class);
metadata.setId(context.generateId());
metadata.setScope(BeanMetadata.SCOPE_SINGLETON);
metadata.setActivation(ReferenceMetadata.ACTIVATION_EAGER);
metadata.setRuntimeClass(NotificationListenerBean.class);
metadata.setInitMethod("init");
metadata.setDestroyMethod("destroy");
metadata.addProperty("bundle", createRef(context, "blueprintBundle"));
metadata.addProperty("notificationService", createRef(context, NOTIFICATION_SERVICE_NAME));
metadata.addProperty("notificationListener", createRef(context, element.getAttribute(REF_ATTR)));
LOG.debug("parseNotificationListener returning {}", metadata);
return metadata;
}
private static void registerNotificationServiceRefBean(final ParserContext context) {
ComponentDefinitionRegistry registry = context.getComponentDefinitionRegistry();
if (registry.getComponentDefinition(NOTIFICATION_SERVICE_NAME) == null) {
MutableReferenceMetadata metadata = createServiceRef(context, NotificationService.class, null);
metadata.setId(NOTIFICATION_SERVICE_NAME);
registry.registerComponentDefinition(metadata);
}
}
private static Metadata parseClusteredAppConfig(final Element element, final ParserContext context) {
LOG.debug("parseClusteredAppConfig");
// Find the default-config child element representing the default app config XML, if present.
Element defaultConfigElement = null;
NodeList children = element.getChildNodes();
for (int i = 0; i < children.getLength(); i++) {
Node child = children.item(i);
if (nodeNameEquals(child, DataStoreAppConfigMetadata.DEFAULT_CONFIG)) {
defaultConfigElement = (Element) child;
break;
}
}
Element defaultAppConfigElement = null;
if (defaultConfigElement != null) {
// Find the CDATA element containing the default app config XML.
children = defaultConfigElement.getChildNodes();
for (int i = 0; i < children.getLength(); i++) {
Node child = children.item(i);
if (child.getNodeType() == Node.CDATA_SECTION_NODE) {
defaultAppConfigElement = parseXML(DataStoreAppConfigMetadata.DEFAULT_CONFIG,
child.getTextContent());
break;
}
}
}
return new DataStoreAppConfigMetadata(getId(context, element), element.getAttribute(
DataStoreAppConfigMetadata.BINDING_CLASS), element.getAttribute(
DataStoreAppConfigMetadata.LIST_KEY_VALUE), element.getAttribute(
DataStoreAppConfigMetadata.DEFAULT_CONFIG_FILE_NAME), parseUpdateStrategy(
element.getAttribute(UPDATE_STRATEGY_ATTR)), defaultAppConfigElement);
}
private static UpdateStrategy parseUpdateStrategy(final String updateStrategyValue) {
if (Strings.isNullOrEmpty(updateStrategyValue)
|| updateStrategyValue.equalsIgnoreCase(UpdateStrategy.RELOAD.name())) {
return UpdateStrategy.RELOAD;
} else if (updateStrategyValue.equalsIgnoreCase(UpdateStrategy.NONE.name())) {
return UpdateStrategy.NONE;
} else {
LOG.warn("update-strategy {} not supported, using reload", updateStrategyValue);
return UpdateStrategy.RELOAD;
}
}
private static Metadata parseSpecificReferenceList(final Element element, final ParserContext context) {
ComponentFactoryMetadata metadata = new SpecificReferenceListMetadata(getId(context, element),
element.getAttribute(INTERFACE));
LOG.debug("parseSpecificReferenceList returning {}", metadata);
return metadata;
}
private static Metadata parseStaticReference(final Element element, final ParserContext context) {
ComponentFactoryMetadata metadata = new StaticReferenceMetadata(getId(context, element),
element.getAttribute(INTERFACE));
LOG.debug("parseStaticReference returning {}", metadata);
return metadata;
}
private static Element parseXML(final String name, final String xml) {
try {
return UntrustedXML.newDocumentBuilder().parse(new InputSource(new StringReader(xml))).getDocumentElement();
} catch (SAXException | IOException e) {
throw new ComponentDefinitionException(String.format("Error %s parsing XML: %s", name, xml), e);
}
}
private static ValueMetadata createValue(final ParserContext context, final String value) {
MutableValueMetadata metadata = context.createMetadata(MutableValueMetadata.class);
metadata.setStringValue(value);
return metadata;
}
private static MutableReferenceMetadata createServiceRef(final ParserContext context, final Class<?> cls,
final String filter) {
MutableReferenceMetadata metadata = context.createMetadata(MutableReferenceMetadata.class);
metadata.setRuntimeInterface(cls);
metadata.setInterface(cls.getName());
metadata.setActivation(ReferenceMetadata.ACTIVATION_EAGER);
metadata.setAvailability(ReferenceMetadata.AVAILABILITY_MANDATORY);
if (filter != null) {
metadata.setFilter(filter);
}
return metadata;
}
private static RefMetadata createRef(final ParserContext context, final String id) {
MutableRefMetadata metadata = context.createMetadata(MutableRefMetadata.class);
metadata.setComponentId(id);
return metadata;
}
private static String getId(final ParserContext context, final Element element) {
if (element.hasAttribute(ID_ATTR)) {
return element.getAttribute(ID_ATTR);
} else {
return context.generateId();
}
}
private static boolean nodeNameEquals(final Node node, final String name) {
return name.equals(node.getNodeName()) || name.equals(node.getLocalName());
}
}