/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.camel.blueprint.handler;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.net.URL;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.concurrent.Callable;
import javax.xml.bind.Binder;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.apache.aries.blueprint.BeanProcessor;
import org.apache.aries.blueprint.ComponentDefinitionRegistry;
import org.apache.aries.blueprint.ComponentDefinitionRegistryProcessor;
import org.apache.aries.blueprint.NamespaceHandler;
import org.apache.aries.blueprint.ParserContext;
import org.apache.aries.blueprint.PassThroughMetadata;
import org.apache.aries.blueprint.mutable.MutableBeanMetadata;
import org.apache.aries.blueprint.mutable.MutablePassThroughMetadata;
import org.apache.aries.blueprint.mutable.MutableRefMetadata;
import org.apache.aries.blueprint.mutable.MutableReferenceMetadata;
import org.apache.camel.CamelContext;
import org.apache.camel.CamelContextAware;
import org.apache.camel.EndpointInject;
import org.apache.camel.Produce;
import org.apache.camel.blueprint.BlueprintCamelContext;
import org.apache.camel.blueprint.CamelContextFactoryBean;
import org.apache.camel.blueprint.CamelRouteContextFactoryBean;
import org.apache.camel.builder.xml.Namespaces;
import org.apache.camel.core.xml.AbstractCamelContextFactoryBean;
import org.apache.camel.core.xml.AbstractCamelFactoryBean;
import org.apache.camel.impl.CamelPostProcessorHelper;
import org.apache.camel.impl.DefaultCamelContextNameStrategy;
import org.apache.camel.model.AggregateDefinition;
import org.apache.camel.model.CatchDefinition;
import org.apache.camel.model.DataFormatDefinition;
import org.apache.camel.model.ExpressionNode;
import org.apache.camel.model.ExpressionSubElementDefinition;
import org.apache.camel.model.FromDefinition;
import org.apache.camel.model.MarshalDefinition;
import org.apache.camel.model.OnExceptionDefinition;
import org.apache.camel.model.ProcessorDefinition;
import org.apache.camel.model.ResequenceDefinition;
import org.apache.camel.model.RouteDefinition;
import org.apache.camel.model.SendDefinition;
import org.apache.camel.model.SortDefinition;
import org.apache.camel.model.UnmarshalDefinition;
import org.apache.camel.model.WireTapDefinition;
import org.apache.camel.model.language.ExpressionDefinition;
import org.apache.camel.spi.CamelContextNameStrategy;
import org.apache.camel.spi.ComponentResolver;
import org.apache.camel.spi.DataFormatResolver;
import org.apache.camel.spi.LanguageResolver;
import org.apache.camel.spi.NamespaceAware;
import org.apache.camel.util.ObjectHelper;
import org.apache.camel.util.blueprint.KeyStoreParametersFactoryBean;
import org.apache.camel.util.blueprint.SSLContextParametersFactoryBean;
import org.apache.camel.util.blueprint.SecureRandomParametersFactoryBean;
import org.osgi.framework.Bundle;
import org.osgi.service.blueprint.container.BlueprintContainer;
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.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.osgi.service.blueprint.reflect.ServiceReferenceMetadata.AVAILABILITY_MANDATORY;
import static org.osgi.service.blueprint.reflect.ServiceReferenceMetadata.AVAILABILITY_OPTIONAL;
public class CamelNamespaceHandler implements NamespaceHandler {
private static final String CAMEL_CONTEXT = "camelContext";
private static final String ROUTE_CONTEXT = "routeContext";
private static final String KEY_STORE_PARAMETERS = "keyStoreParameters";
private static final String SECURE_RANDOM_PARAMETERS = "secureRandomParameters";
private static final String SSL_CONTEXT_PARAMETERS = "sslContextParameters";
private static final String SPRING_NS = "http://camel.apache.org/schema/spring";
private static final String BLUEPRINT_NS = "http://camel.apache.org/schema/blueprint";
private static final transient Logger LOG = LoggerFactory.getLogger(CamelNamespaceHandler.class);
private JAXBContext jaxbContext;
public static void renameNamespaceRecursive(Node node) {
if (node.getNodeType() == Node.ELEMENT_NODE) {
Document doc = node.getOwnerDocument();
if (((Element) node).getNamespaceURI().equals(BLUEPRINT_NS)) {
doc.renameNode(node, SPRING_NS, node.getLocalName());
}
}
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); ++i) {
renameNamespaceRecursive(list.item(i));
}
}
public URL getSchemaLocation(String namespace) {
return getClass().getClassLoader().getResource("camel-blueprint.xsd");
}
@SuppressWarnings("unchecked")
public Set<Class> getManagedClasses() {
return new HashSet<Class>(Arrays.asList(BlueprintCamelContext.class));
}
public Metadata parse(Element element, ParserContext context) {
renameNamespaceRecursive(element);
if (element.getLocalName().equals(CAMEL_CONTEXT)) {
return parseCamelContextNode(element, context);
}
if (element.getLocalName().equals(ROUTE_CONTEXT)) {
return parseRouteContextNode(element, context);
}
if (element.getLocalName().equals(KEY_STORE_PARAMETERS)) {
return parseKeyStoreParametersNode(element, context);
}
if (element.getLocalName().equals(SECURE_RANDOM_PARAMETERS)) {
return parseSecureRandomParametersNode(element, context);
}
if (element.getLocalName().equals(SSL_CONTEXT_PARAMETERS)) {
return parseSSLContextParametersNode(element, context);
}
return null;
}
private Metadata parseCamelContextNode(Element element, ParserContext context) {
// Find the id, generate one if needed
String contextId = element.getAttribute("id");
boolean implicitId = false;
// let's avoid folks having to explicitly give an ID to a camel context
if (ObjectHelper.isEmpty(contextId)) {
// if no explicit id was set then use a default auto generated name
CamelContextNameStrategy strategy = new DefaultCamelContextNameStrategy();
contextId = strategy.getName();
element.setAttribute("id", contextId);
implicitId = true;
}
// now let's parse the routes with JAXB
Binder<Node> binder;
try {
binder = getJaxbContext().createBinder();
} catch (JAXBException e) {
throw new ComponentDefinitionException("Failed to create the JAXB binder : " + e, e);
}
Object value = parseUsingJaxb(element, context, binder);
if (!(value instanceof CamelContextFactoryBean)) {
throw new ComponentDefinitionException("Expected an instance of " + CamelContextFactoryBean.class);
}
CamelContextFactoryBean ccfb = (CamelContextFactoryBean) value;
ccfb.setImplicitId(implicitId);
MutablePassThroughMetadata factory = context.createMetadata(MutablePassThroughMetadata.class);
factory.setId(".camelBlueprint.passThrough." + contextId);
factory.setObject(new PassThroughCallable<Object>(value));
MutableBeanMetadata factory2 = context.createMetadata(MutableBeanMetadata.class);
factory2.setId(".camelBlueprint.factory." + contextId);
factory2.setFactoryComponent(factory);
factory2.setFactoryMethod("call");
factory2.setInitMethod("afterPropertiesSet");
factory2.setDestroyMethod("destroy");
factory2.addProperty("blueprintContainer", createRef(context, "blueprintContainer"));
factory2.addProperty("bundleContext", createRef(context, "blueprintBundleContext"));
context.getComponentDefinitionRegistry().registerComponentDefinition(factory2);
MutableBeanMetadata ctx = context.createMetadata(MutableBeanMetadata.class);
ctx.setId(contextId);
ctx.setRuntimeClass(BlueprintCamelContext.class);
ctx.setFactoryComponent(factory2);
ctx.setFactoryMethod("getContext");
ctx.setInitMethod("init");
ctx.setDestroyMethod("destroy");
// Register factory beans
registerBeans(context, contextId, ccfb.getThreadPools());
registerBeans(context, contextId, ccfb.getEndpoints());
registerBeans(context, contextId, ccfb.getRedeliveryPolicies());
registerBeans(context, contextId, ccfb.getBeans());
// Register processors
MutablePassThroughMetadata beanProcessorFactory = context.createMetadata(MutablePassThroughMetadata.class);
beanProcessorFactory.setId(".camelBlueprint.processor.bean.passThrough." + contextId);
beanProcessorFactory.setObject(new PassThroughCallable<Object>(new CamelInjector(contextId)));
MutableBeanMetadata beanProcessor = context.createMetadata(MutableBeanMetadata.class);
beanProcessor.setId(".camelBlueprint.processor.bean." + contextId);
beanProcessor.setRuntimeClass(CamelInjector.class);
beanProcessor.setFactoryComponent(beanProcessorFactory);
beanProcessor.setFactoryMethod("call");
beanProcessor.setProcessor(true);
beanProcessor.addProperty("blueprintContainer", createRef(context, "blueprintContainer"));
context.getComponentDefinitionRegistry().registerComponentDefinition(beanProcessor);
MutablePassThroughMetadata regProcessorFactory = context.createMetadata(MutablePassThroughMetadata.class);
regProcessorFactory.setId(".camelBlueprint.processor.registry.passThrough." + contextId);
regProcessorFactory.setObject(new PassThroughCallable<Object>(new CamelDependenciesFinder(contextId, context)));
MutableBeanMetadata regProcessor = context.createMetadata(MutableBeanMetadata.class);
regProcessor.setId(".camelBlueprint.processor.registry." + contextId);
regProcessor.setRuntimeClass(CamelDependenciesFinder.class);
regProcessor.setFactoryComponent(regProcessorFactory);
regProcessor.setFactoryMethod("call");
regProcessor.setProcessor(true);
regProcessor.addDependsOn(".camelBlueprint.processor.bean." + contextId);
regProcessor.addProperty("blueprintContainer", createRef(context, "blueprintContainer"));
context.getComponentDefinitionRegistry().registerComponentDefinition(regProcessor);
// lets inject the namespaces into any namespace aware POJOs
injectNamespaces(element, binder);
return ctx;
}
protected void injectNamespaces(Element element, Binder<Node> binder) {
NodeList list = element.getChildNodes();
Namespaces namespaces = null;
int size = list.getLength();
for (int i = 0; i < size; i++) {
Node child = list.item(i);
if (child instanceof Element) {
Element childElement = (Element) child;
Object object = binder.getJAXBNode(child);
if (object instanceof NamespaceAware) {
NamespaceAware namespaceAware = (NamespaceAware) object;
if (namespaces == null) {
namespaces = new Namespaces(element);
}
namespaces.configure(namespaceAware);
}
injectNamespaces(childElement, binder);
}
}
}
private Metadata parseRouteContextNode(Element element, ParserContext context) {
// now parse the routes with JAXB
Binder<Node> binder;
try {
binder = getJaxbContext().createBinder();
} catch (JAXBException e) {
throw new ComponentDefinitionException("Failed to create the JAXB binder : " + e, e);
}
Object value = parseUsingJaxb(element, context, binder);
if (!(value instanceof CamelRouteContextFactoryBean)) {
throw new ComponentDefinitionException("Expected an instance of " + CamelRouteContextFactoryBean.class);
}
CamelRouteContextFactoryBean rcfb = (CamelRouteContextFactoryBean) value;
String id = rcfb.getId();
MutablePassThroughMetadata factory = context.createMetadata(MutablePassThroughMetadata.class);
factory.setId(".camelBlueprint.passThrough." + id);
factory.setObject(new PassThroughCallable<Object>(rcfb));
MutableBeanMetadata factory2 = context.createMetadata(MutableBeanMetadata.class);
factory2.setId(".camelBlueprint.factory." + id);
factory2.setFactoryComponent(factory);
factory2.setFactoryMethod("call");
MutableBeanMetadata ctx = context.createMetadata(MutableBeanMetadata.class);
ctx.setId(id);
ctx.setRuntimeClass(List.class);
ctx.setFactoryComponent(factory2);
ctx.setFactoryMethod("getRoutes");
return ctx;
}
private Metadata parseKeyStoreParametersNode(Element element, ParserContext context) {
// now parse the key store parameters with JAXB
Binder<Node> binder;
try {
binder = getJaxbContext().createBinder();
} catch (JAXBException e) {
throw new ComponentDefinitionException("Failed to create the JAXB binder : " + e, e);
}
Object value = parseUsingJaxb(element, context, binder);
if (!(value instanceof KeyStoreParametersFactoryBean)) {
throw new ComponentDefinitionException("Expected an instance of " + KeyStoreParametersFactoryBean.class);
}
KeyStoreParametersFactoryBean kspfb = (KeyStoreParametersFactoryBean) value;
String id = kspfb.getId();
MutablePassThroughMetadata factory = context.createMetadata(MutablePassThroughMetadata.class);
factory.setId(".camelBlueprint.passThrough." + id);
factory.setObject(new PassThroughCallable<Object>(kspfb));
MutableBeanMetadata factory2 = context.createMetadata(MutableBeanMetadata.class);
factory2.setId(".camelBlueprint.factory." + id);
factory2.setFactoryComponent(factory);
factory2.setFactoryMethod("call");
MutableBeanMetadata ctx = context.createMetadata(MutableBeanMetadata.class);
ctx.setId(id);
ctx.setRuntimeClass(List.class);
ctx.setFactoryComponent(factory2);
ctx.setFactoryMethod("getObject");
return ctx;
}
private Metadata parseSecureRandomParametersNode(Element element, ParserContext context) {
// now parse the key store parameters with JAXB
Binder<Node> binder;
try {
binder = getJaxbContext().createBinder();
} catch (JAXBException e) {
throw new ComponentDefinitionException("Failed to create the JAXB binder : " + e, e);
}
Object value = parseUsingJaxb(element, context, binder);
if (!(value instanceof SecureRandomParametersFactoryBean)) {
throw new ComponentDefinitionException("Expected an instance of " + SecureRandomParametersFactoryBean.class);
}
SecureRandomParametersFactoryBean srfb = (SecureRandomParametersFactoryBean) value;
String id = srfb.getId();
MutablePassThroughMetadata factory = context.createMetadata(MutablePassThroughMetadata.class);
factory.setId(".camelBlueprint.passThrough." + id);
factory.setObject(new PassThroughCallable<Object>(srfb));
MutableBeanMetadata factory2 = context.createMetadata(MutableBeanMetadata.class);
factory2.setId(".camelBlueprint.factory." + id);
factory2.setFactoryComponent(factory);
factory2.setFactoryMethod("call");
MutableBeanMetadata ctx = context.createMetadata(MutableBeanMetadata.class);
ctx.setId(id);
ctx.setRuntimeClass(List.class);
ctx.setFactoryComponent(factory2);
ctx.setFactoryMethod("getObject");
return ctx;
}
private Metadata parseSSLContextParametersNode(Element element, ParserContext context) {
// now parse the key store parameters with JAXB
Binder<Node> binder;
try {
binder = getJaxbContext().createBinder();
} catch (JAXBException e) {
throw new ComponentDefinitionException("Failed to create the JAXB binder : " + e, e);
}
Object value = parseUsingJaxb(element, context, binder);
if (!(value instanceof SSLContextParametersFactoryBean)) {
throw new ComponentDefinitionException("Expected an instance of " + SSLContextParametersFactoryBean.class);
}
SSLContextParametersFactoryBean scpfb = (SSLContextParametersFactoryBean) value;
String id = scpfb.getId();
MutablePassThroughMetadata factory = context.createMetadata(MutablePassThroughMetadata.class);
factory.setId(".camelBlueprint.passThrough." + id);
factory.setObject(new PassThroughCallable<Object>(scpfb));
MutableBeanMetadata factory2 = context.createMetadata(MutableBeanMetadata.class);
factory2.setId(".camelBlueprint.factory." + id);
factory2.setFactoryComponent(factory);
factory2.setFactoryMethod("call");
MutableBeanMetadata ctx = context.createMetadata(MutableBeanMetadata.class);
ctx.setId(id);
ctx.setRuntimeClass(List.class);
ctx.setFactoryComponent(factory2);
ctx.setFactoryMethod("getObject");
return ctx;
}
private void registerBeans(ParserContext context, String contextId, List<?> beans) {
if (beans != null) {
for (Object bean : beans) {
if (bean instanceof AbstractCamelFactoryBean) {
registerBean(context, contextId, (AbstractCamelFactoryBean) bean);
}
}
}
}
protected void registerBean(ParserContext context, String contextId, AbstractCamelFactoryBean<?> fact) {
String id = fact.getId();
fact.setCamelContextId(contextId);
MutablePassThroughMetadata eff = context.createMetadata(MutablePassThroughMetadata.class);
eff.setId(".camelBlueprint.bean.passthrough." + id);
eff.setObject(new PassThroughCallable<Object>(fact));
MutableBeanMetadata ef = context.createMetadata(MutableBeanMetadata.class);
ef.setId(".camelBlueprint.bean.factory." + id);
ef.setFactoryComponent(eff);
ef.setFactoryMethod("call");
ef.addProperty("blueprintContainer", createRef(context, "blueprintContainer"));
ef.setInitMethod("afterPropertiesSet");
ef.setDestroyMethod("destroy");
MutableBeanMetadata e = context.createMetadata(MutableBeanMetadata.class);
e.setId(id);
e.setRuntimeClass(fact.getObjectType());
e.setFactoryComponent(ef);
e.setFactoryMethod("getObject");
e.addDependsOn(".camelBlueprint.processor.bean." + contextId);
context.getComponentDefinitionRegistry().registerComponentDefinition(e);
}
protected BlueprintContainer getBlueprintContainer(ParserContext context) {
PassThroughMetadata ptm = (PassThroughMetadata) context.getComponentDefinitionRegistry().getComponentDefinition("blueprintContainer");
return (BlueprintContainer) ptm.getObject();
}
public ComponentMetadata decorate(Node node, ComponentMetadata component, ParserContext context) {
return null;
}
protected Object parseUsingJaxb(Element element, ParserContext parserContext, Binder<Node> binder) {
try {
return binder.unmarshal(element);
} catch (JAXBException e) {
throw new ComponentDefinitionException("Failed to parse JAXB element: " + e, e);
}
}
public JAXBContext getJaxbContext() throws JAXBException {
if (jaxbContext == null) {
jaxbContext = createJaxbContext();
}
return jaxbContext;
}
protected JAXBContext createJaxbContext() throws JAXBException {
StringBuilder packages = new StringBuilder();
for (Class cl : getJaxbPackages()) {
if (packages.length() > 0) {
packages.append(":");
}
packages.append(cl.getName().substring(0, cl.getName().lastIndexOf('.')));
}
return JAXBContext.newInstance(packages.toString(), getClass().getClassLoader());
}
protected Set<Class> getJaxbPackages() {
Set<Class> classes = new HashSet<Class>();
classes.add(CamelContextFactoryBean.class);
classes.add(AbstractCamelContextFactoryBean.class);
classes.add(org.apache.camel.ExchangePattern.class);
classes.add(org.apache.camel.model.RouteDefinition.class);
classes.add(org.apache.camel.model.config.StreamResequencerConfig.class);
classes.add(org.apache.camel.model.dataformat.DataFormatsDefinition.class);
classes.add(org.apache.camel.model.language.ExpressionDefinition.class);
classes.add(org.apache.camel.model.loadbalancer.RoundRobinLoadBalancerDefinition.class);
classes.add(SSLContextParametersFactoryBean.class);
return classes;
}
private RefMetadata createRef(ParserContext context, String value) {
MutableRefMetadata r = context.createMetadata(MutableRefMetadata.class);
r.setComponentId(value);
return r;
}
public static class PassThroughCallable<T> implements Callable<T> {
private T value;
public PassThroughCallable(T value) {
this.value = value;
}
public T call() throws Exception {
return value;
}
}
public static class CamelInjector extends CamelPostProcessorHelper implements BeanProcessor {
private final String camelContextName;
private BlueprintContainer blueprintContainer;
public CamelInjector(String camelContextName) {
this.camelContextName = camelContextName;
}
public void setBlueprintContainer(BlueprintContainer blueprintContainer) {
this.blueprintContainer = blueprintContainer;
}
public Object beforeInit(Object bean, String beanName, BeanCreator beanCreator, BeanMetadata beanMetadata) {
injectFields(bean, beanName);
injectMethods(bean, beanName);
if (bean instanceof CamelContextAware) {
((CamelContextAware) bean).setCamelContext(getCamelContext());
}
return bean;
}
@Override
public CamelContext getCamelContext() {
return (CamelContext) blueprintContainer.getComponentInstance(camelContextName);
}
/**
* A strategy method to allow implementations to perform some custom JBI
* based injection of the POJO
*
* @param bean the bean to be injected
*/
protected void injectFields(final Object bean, final String beanName) {
Class clazz = bean.getClass();
do {
Field[] fields = clazz.getDeclaredFields();
for (Field field : fields) {
EndpointInject endpointInject = field.getAnnotation(EndpointInject.class);
if (endpointInject != null && matchContext(endpointInject.context())) {
injectField(field, endpointInject.uri(), endpointInject.ref(), bean, beanName);
}
Produce produce = field.getAnnotation(Produce.class);
if (produce != null && matchContext(produce.context())) {
injectField(field, produce.uri(), produce.ref(), bean, beanName);
}
}
clazz = clazz.getSuperclass();
} while (clazz != null && clazz != Object.class);
}
protected void injectField(Field field, String endpointUri, String endpointRef, Object bean, String beanName) {
setField(field, bean, getInjectionValue(field.getType(), endpointUri, endpointRef, field.getName(), bean, beanName));
}
protected static void setField(Field field, Object instance, Object value) {
try {
boolean oldAccessible = field.isAccessible();
boolean shouldSetAccessible = !Modifier.isPublic(field.getModifiers()) && !oldAccessible;
if (shouldSetAccessible) {
field.setAccessible(true);
}
field.set(instance, value);
if (shouldSetAccessible) {
field.setAccessible(oldAccessible);
}
} catch (IllegalArgumentException ex) {
throw new UnsupportedOperationException("Cannot inject value of class: " + value.getClass() + " into: " + field);
} catch (IllegalAccessException ex) {
throw new IllegalStateException("Could not access method: " + ex.getMessage());
}
}
protected void injectMethods(final Object bean, final String beanName) {
Class clazz = bean.getClass();
do {
Method[] methods = clazz.getDeclaredMethods();
for (Method method : methods) {
setterInjection(method, bean, beanName);
consumerInjection(method, bean, beanName);
}
clazz = clazz.getSuperclass();
} while (clazz != null && clazz != Object.class);
}
protected void setterInjection(Method method, Object bean, String beanName) {
EndpointInject endpointInject = method.getAnnotation(EndpointInject.class);
if (endpointInject != null && matchContext(endpointInject.context())) {
setterInjection(method, bean, beanName, endpointInject.uri(), endpointInject.ref());
}
Produce produce = method.getAnnotation(Produce.class);
if (produce != null && matchContext(produce.context())) {
setterInjection(method, bean, beanName, produce.uri(), produce.ref());
}
}
protected void setterInjection(Method method, Object bean, String beanName, String endpointUri, String endpointRef) {
Class<?>[] parameterTypes = method.getParameterTypes();
if (parameterTypes != null) {
if (parameterTypes.length != 1) {
LOG.warn("Ignoring badly annotated method for injection due to incorrect number of parameters: " + method);
} else {
String propertyName = ObjectHelper.getPropertyName(method);
Object value = getInjectionValue(parameterTypes[0], endpointUri, endpointRef, propertyName, bean, beanName);
ObjectHelper.invokeMethod(method, bean, value);
}
}
}
public Object afterInit(Object o, String s, BeanCreator beanCreator, BeanMetadata beanMetadata) {
return o;
}
public void beforeDestroy(Object o, String s) {
}
public void afterDestroy(Object o, String s) {
}
}
public static class CamelDependenciesFinder implements ComponentDefinitionRegistryProcessor {
private final String camelContextName;
private final ParserContext context;
private BlueprintContainer blueprintContainer;
public CamelDependenciesFinder(String camelContextName, ParserContext context) {
this.camelContextName = camelContextName;
this.context = context;
}
public void setBlueprintContainer(BlueprintContainer blueprintContainer) {
this.blueprintContainer = blueprintContainer;
}
@SuppressWarnings("deprecation")
public void process(ComponentDefinitionRegistry componentDefinitionRegistry) {
CamelContextFactoryBean ccfb = (CamelContextFactoryBean) blueprintContainer.getComponentInstance(".camelBlueprint.factory." + camelContextName);
CamelContext camelContext = ccfb.getContext();
Set<String> components = new HashSet<String>();
Set<String> languages = new HashSet<String>();
Set<String> dataformats = new HashSet<String>();
Set<String> dependsOn = new HashSet<String>();
for (RouteDefinition rd : camelContext.getRouteDefinitions()) {
findInputComponents(rd.getInputs(), components, languages, dataformats);
findOutputComponents(rd.getOutputs(), components, languages, dataformats);
}
try {
for (String component : components) {
ComponentMetadata cm = componentDefinitionRegistry.getComponentDefinition(".camelBlueprint.componentResolver." + component);
if (cm == null) {
MutableReferenceMetadata svc = createMetadata(MutableReferenceMetadata.class);
svc.setId(".camelBlueprint.componentResolver." + component);
svc.setFilter("(component=" + component + ")");
svc.setAvailability(componentDefinitionRegistry.containsComponentDefinition(component) ? AVAILABILITY_OPTIONAL : AVAILABILITY_MANDATORY);
try {
// Try to set the runtime interface (only with aries blueprint > 0.1
svc.getClass().getMethod("setRuntimeInterface", Class.class).invoke(svc, ComponentResolver.class);
} catch (Throwable t) {
// Check if the bundle can see the class
try {
PassThroughMetadata ptm = (PassThroughMetadata) componentDefinitionRegistry.getComponentDefinition("blueprintBundle");
Bundle b = (Bundle) ptm.getObject();
if (b.loadClass(ComponentResolver.class.getName()) != ComponentResolver.class) {
throw new UnsupportedOperationException();
}
svc.setInterface(ComponentResolver.class.getName());
} catch (Throwable t2) {
throw new UnsupportedOperationException();
}
}
componentDefinitionRegistry.registerComponentDefinition(svc);
dependsOn.add(svc.getId());
}
}
for (String language : languages) {
ComponentMetadata cm = componentDefinitionRegistry.getComponentDefinition(".camelBlueprint.languageResolver." + language);
if (cm == null) {
MutableReferenceMetadata svc = createMetadata(MutableReferenceMetadata.class);
svc.setId(".camelBlueprint.languageResolver." + language);
svc.setFilter("(language=" + language + ")");
svc.setAvailability(componentDefinitionRegistry.containsComponentDefinition(language) ? AVAILABILITY_OPTIONAL : AVAILABILITY_MANDATORY);
try {
// Try to set the runtime interface (only with aries blueprint > 0.1
svc.getClass().getMethod("setRuntimeInterface", Class.class).invoke(svc, LanguageResolver.class);
} catch (Throwable t) {
// Check if the bundle can see the class
try {
PassThroughMetadata ptm = (PassThroughMetadata) componentDefinitionRegistry.getComponentDefinition("blueprintBundle");
Bundle b = (Bundle) ptm.getObject();
if (b.loadClass(LanguageResolver.class.getName()) != LanguageResolver.class) {
throw new UnsupportedOperationException();
}
svc.setInterface(LanguageResolver.class.getName());
} catch (Throwable t2) {
throw new UnsupportedOperationException();
}
}
componentDefinitionRegistry.registerComponentDefinition(svc);
dependsOn.add(svc.getId());
}
}
for (String dataformat : dataformats) {
ComponentMetadata cm = componentDefinitionRegistry.getComponentDefinition(".camelBlueprint.dataformatResolver." + dataformat);
if (cm == null) {
MutableReferenceMetadata svc = createMetadata(MutableReferenceMetadata.class);
svc.setId(".camelBlueprint.dataformatResolver." + dataformat);
svc.setFilter("(dataformat=" + dataformat + ")");
svc.setAvailability(componentDefinitionRegistry.containsComponentDefinition(dataformat) ? AVAILABILITY_OPTIONAL : AVAILABILITY_MANDATORY);
try {
// Try to set the runtime interface (only with aries blueprint > 0.1
svc.getClass().getMethod("setRuntimeInterface", Class.class).invoke(svc, DataFormatResolver.class);
} catch (Throwable t) {
// Check if the bundle can see the class
try {
PassThroughMetadata ptm = (PassThroughMetadata) componentDefinitionRegistry.getComponentDefinition("blueprintBundle");
Bundle b = (Bundle) ptm.getObject();
if (b.loadClass(DataFormatResolver.class.getName()) != DataFormatResolver.class) {
throw new UnsupportedOperationException();
}
svc.setInterface(DataFormatResolver.class.getName());
} catch (Throwable t2) {
throw new UnsupportedOperationException();
}
}
componentDefinitionRegistry.registerComponentDefinition(svc);
dependsOn.add(svc.getId());
}
}
} catch (UnsupportedOperationException e) {
LOG.warn("Unable to add dependencies on to camel components OSGi services. "
+ "The Apache Aries blueprint implementation used it too old and the blueprint bundle can not see the org.apache.camel.spi package.");
components.clear();
languages.clear();
dataformats.clear();
}
}
public <T extends org.osgi.service.blueprint.reflect.Metadata> T createMetadata(java.lang.Class<T> tClass) {
return context.createMetadata(tClass);
}
private void findInputComponents(List<FromDefinition> defs, Set<String> components, Set<String> languages, Set<String> dataformats) {
if (defs != null) {
for (FromDefinition def : defs) {
findUriComponent(def.getUri(), components);
}
}
}
@SuppressWarnings("unchecked")
private void findOutputComponents(List<ProcessorDefinition> defs, Set<String> components, Set<String> languages, Set<String> dataformats) {
if (defs != null) {
for (ProcessorDefinition def : defs) {
if (def instanceof SendDefinition) {
findUriComponent(((SendDefinition) def).getUri(), components);
}
if (def instanceof MarshalDefinition) {
findDataFormat(((MarshalDefinition) def).getDataFormatType(), dataformats);
}
if (def instanceof UnmarshalDefinition) {
findDataFormat(((UnmarshalDefinition) def).getDataFormatType(), dataformats);
}
if (def instanceof ExpressionNode) {
findLanguage(((ExpressionNode) def).getExpression(), languages);
}
if (def instanceof ResequenceDefinition) {
findLanguage(((ResequenceDefinition) def).getExpression(), languages);
}
if (def instanceof AggregateDefinition) {
findLanguage(((AggregateDefinition) def).getExpression(), languages);
findLanguage(((AggregateDefinition) def).getCorrelationExpression(), languages);
findLanguage(((AggregateDefinition) def).getCompletionPredicate(), languages);
findLanguage(((AggregateDefinition) def).getCompletionTimeoutExpression(), languages);
findLanguage(((AggregateDefinition) def).getCompletionSizeExpression(), languages);
}
if (def instanceof CatchDefinition) {
findLanguage(((CatchDefinition) def).getHandled(), languages);
}
if (def instanceof OnExceptionDefinition) {
findLanguage(((OnExceptionDefinition) def).getRetryWhile(), languages);
findLanguage(((OnExceptionDefinition) def).getHandled(), languages);
findLanguage(((OnExceptionDefinition) def).getContinued(), languages);
}
if (def instanceof SortDefinition) {
findLanguage(((SortDefinition) def).getExpression(), languages);
}
if (def instanceof WireTapDefinition) {
findLanguage(((WireTapDefinition) def).getNewExchangeExpression(), languages);
}
findOutputComponents(def.getOutputs(), components, languages, dataformats);
}
}
}
private void findLanguage(ExpressionDefinition expression, Set<String> languages) {
if (expression != null) {
String lang = expression.getLanguage();
if (lang != null && lang.length() > 0) {
languages.add(lang);
}
}
}
private void findLanguage(ExpressionSubElementDefinition expression, Set<String> languages) {
if (expression != null) {
findLanguage(expression.getExpressionType(), languages);
}
}
private void findDataFormat(DataFormatDefinition dfd, Set<String> dataformats) {
if (dfd != null && dfd.getDataFormatName() != null) {
dataformats.add(dfd.getDataFormatName());
}
}
private void findUriComponent(String uri, Set<String> components) {
if (uri != null) {
String splitURI[] = ObjectHelper.splitOnCharacter(uri, ":", 2);
if (splitURI[1] != null) {
String scheme = splitURI[0];
components.add(scheme);
}
}
}
}
}