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package org.apache.camel.impl; |
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import java.io.IOException; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.HashMap; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.concurrent.Callable; |
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import javax.naming.Context; |
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import org.apache.camel.CamelContext; |
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import org.apache.camel.Component; |
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import org.apache.camel.Endpoint; |
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import org.apache.camel.Exchange; |
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import org.apache.camel.LifecycleStrategy; |
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import org.apache.camel.Processor; |
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import org.apache.camel.ResolveEndpointFailedException; |
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import org.apache.camel.Route; |
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import org.apache.camel.RuntimeCamelException; |
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import org.apache.camel.Service; |
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import org.apache.camel.TypeConverter; |
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import org.apache.camel.builder.RouteBuilder; |
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import org.apache.camel.impl.converter.DefaultTypeConverter; |
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import org.apache.camel.spi.ComponentResolver; |
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import org.apache.camel.spi.ExchangeConverter; |
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import org.apache.camel.spi.Injector; |
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import org.apache.camel.spi.Language; |
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import org.apache.camel.spi.LanguageResolver; |
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import org.apache.camel.spi.Registry; |
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import org.apache.camel.util.FactoryFinder; |
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import org.apache.camel.util.NoFactoryAvailableException; |
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import org.apache.camel.util.ObjectHelper; |
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import static org.apache.camel.util.ServiceHelper.startServices; |
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import static org.apache.camel.util.ServiceHelper.stopServices; |
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public class DefaultCamelContext extends ServiceSupport implements CamelContext, Service { |
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private Map<String, Endpoint> endpoints = new HashMap<String, Endpoint>(); |
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private Map<String, Component> components = new HashMap<String, Component>(); |
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private List<Route> routes; |
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private List<Service> servicesToClose = new ArrayList<Service>(); |
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private TypeConverter typeConverter; |
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private ExchangeConverter exchangeConverter; |
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private Injector injector; |
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private ComponentResolver componentResolver; |
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private boolean autoCreateComponents = true; |
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private LanguageResolver languageResolver = new DefaultLanguageResolver(); |
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private Registry registry; |
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private LifecycleStrategy lifecycleStrategy = new DefaultLifecycleStrategy(); |
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public DefaultCamelContext() { |
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} |
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public DefaultCamelContext(Context jndiContext) { |
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this(new JndiRegistry(jndiContext)); |
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} |
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public DefaultCamelContext(Registry registry) { |
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this.registry = registry; |
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} |
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public void addComponent(String componentName, final Component component) { |
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if (component == null) { |
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throw new IllegalArgumentException("Component cannot be null"); |
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} |
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synchronized (components) { |
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if (components.containsKey(componentName)) { |
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throw new IllegalArgumentException("Component previously added: " + componentName); |
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} |
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component.setCamelContext(this); |
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components.put(componentName, component); |
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} |
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} |
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public Component getComponent(String name) { |
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synchronized (components) { |
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Component component = components.get(name); |
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if (component == null && autoCreateComponents) { |
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try { |
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component = getComponentResolver().resolveComponent(name, this); |
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if (component != null) { |
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addComponent(name, component); |
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if (isStarted()) { |
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startServices(component); |
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} |
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} |
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} catch (Exception e) { |
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throw new RuntimeCamelException("Could not auto create component: " + name, e); |
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} |
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} |
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return component; |
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} |
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} |
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public <T extends Component> T getComponent(String name, Class<T> componentType) { |
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Component component = getComponent(name); |
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if (componentType.isInstance(component)) { |
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return componentType.cast(component); |
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} else { |
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throw new IllegalArgumentException("The component is not of type: " + componentType + " but is: " |
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+ component); |
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} |
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} |
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public Component removeComponent(String componentName) { |
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synchronized (components) { |
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return components.remove(componentName); |
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} |
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} |
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public Component getOrCreateComponent(String componentName, Callable<Component> factory) { |
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synchronized (components) { |
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Component component = components.get(componentName); |
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if (component == null) { |
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try { |
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component = factory.call(); |
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if (component == null) { |
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throw new RuntimeCamelException("Factory failed to create the " + componentName |
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+ " component, it returned null."); |
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} |
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components.put(componentName, component); |
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component.setCamelContext(this); |
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} catch (Exception e) { |
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throw new RuntimeCamelException("Factory failed to create the " + componentName |
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+ " component", e); |
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} |
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} |
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return component; |
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} |
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} |
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public Collection<Endpoint> getSingletonEndpoints() { |
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synchronized (endpoints) { |
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return new ArrayList<Endpoint>(endpoints.values()); |
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} |
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} |
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public Endpoint addSingletonEndpoint(String uri, Endpoint endpoint) throws Exception { |
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Endpoint oldEndpoint; |
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synchronized (endpoints) { |
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startServices(endpoint); |
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oldEndpoint = endpoints.remove(uri); |
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endpoints.put(uri, endpoint); |
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stopServices(oldEndpoint); |
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} |
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return oldEndpoint; |
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} |
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public Endpoint removeSingletonEndpoint(String uri) throws Exception { |
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Endpoint oldEndpoint; |
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synchronized (endpoints) { |
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oldEndpoint = endpoints.remove(uri); |
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stopServices(oldEndpoint); |
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} |
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return oldEndpoint; |
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} |
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public Endpoint getEndpoint(String uri) { |
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Endpoint answer; |
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synchronized (endpoints) { |
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answer = endpoints.get(uri); |
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if (answer == null) { |
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try { |
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String splitURI[] = ObjectHelper.splitOnCharacter(uri, ":", 2); |
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if (splitURI[1] != null) { |
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String scheme = splitURI[0]; |
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Component component = getComponent(scheme); |
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if (component != null) { |
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answer = component.createEndpoint(uri); |
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} |
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} |
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if (answer == null) { |
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answer = createEndpoint(uri); |
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} |
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if (answer != null && answer.isSingleton()) { |
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startServices(answer); |
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endpoints.put(uri, answer); |
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lifecycleStrategy.onEndpointAdd(answer); |
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} |
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} catch (Exception e) { |
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throw new ResolveEndpointFailedException(uri, e); |
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} |
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} |
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} |
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return answer; |
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} |
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public <T extends Endpoint> T getEndpoint(String name, Class<T> endpointType) { |
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Endpoint endpoint = getEndpoint(name); |
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if (endpointType.isInstance(endpoint)) { |
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return endpointType.cast(endpoint); |
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} else { |
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throw new IllegalArgumentException("The endpoint is not of type: " + endpointType + " but is: " |
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+ endpoint); |
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} |
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} |
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public List<Route> getRoutes() { |
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return routes; |
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} |
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public void setRoutes(List<Route> routes) { |
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this.routes = routes; |
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} |
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public void addRoutes(Collection<Route> routes) throws Exception { |
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if (this.routes == null) { |
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this.routes = new ArrayList<Route>(routes); |
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} else { |
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this.routes.addAll(routes); |
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} |
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lifecycleStrategy.onRoutesAdd(routes); |
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if (isStarted()) { |
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startRoutes(routes); |
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} |
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} |
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public void addRoutes(RouteBuilder builder) throws Exception { |
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builder.setContext(this); |
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addRoutes(builder.getRouteList()); |
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} |
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public Language resolveLanguage(String language) { |
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return getLanguageResolver().resolveLanguage(language, this); |
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} |
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public ExchangeConverter getExchangeConverter() { |
309 |
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if (exchangeConverter == null) { |
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exchangeConverter = createExchangeConverter(); |
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} |
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return exchangeConverter; |
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} |
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public void setExchangeConverter(ExchangeConverter exchangeConverter) { |
316 |
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this.exchangeConverter = exchangeConverter; |
317 |
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} |
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public TypeConverter getTypeConverter() { |
320 |
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if (typeConverter == null) { |
321 |
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typeConverter = createTypeConverter(); |
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} |
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return typeConverter; |
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} |
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public void setTypeConverter(TypeConverter typeConverter) { |
327 |
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this.typeConverter = typeConverter; |
328 |
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} |
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public Injector getInjector() { |
331 |
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if (injector == null) { |
332 |
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injector = createInjector(); |
333 |
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} |
334 |
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return injector; |
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} |
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337 |
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public void setInjector(Injector injector) { |
338 |
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this.injector = injector; |
339 |
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} |
340 |
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341 |
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public ComponentResolver getComponentResolver() { |
342 |
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if (componentResolver == null) { |
343 |
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componentResolver = createComponentResolver(); |
344 |
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} |
345 |
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return componentResolver; |
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} |
347 |
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348 |
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public void setComponentResolver(ComponentResolver componentResolver) { |
349 |
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this.componentResolver = componentResolver; |
350 |
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} |
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public LanguageResolver getLanguageResolver() { |
353 |
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return languageResolver; |
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} |
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356 |
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public void setLanguageResolver(LanguageResolver languageResolver) { |
357 |
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this.languageResolver = languageResolver; |
358 |
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} |
359 |
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360 |
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public boolean isAutoCreateComponents() { |
361 |
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return autoCreateComponents; |
362 |
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} |
363 |
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364 |
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public void setAutoCreateComponents(boolean autoCreateComponents) { |
365 |
3 |
this.autoCreateComponents = autoCreateComponents; |
366 |
3 |
} |
367 |
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368 |
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public Registry getRegistry() { |
369 |
18 |
if (registry == null) { |
370 |
0 |
registry = createRegistry(); |
371 |
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} |
372 |
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return registry; |
373 |
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} |
374 |
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375 |
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public void setRegistry(Registry registry) { |
376 |
0 |
this.registry = registry; |
377 |
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} |
378 |
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379 |
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public LifecycleStrategy getLifecycleStrategy() { |
380 |
0 |
return lifecycleStrategy; |
381 |
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} |
382 |
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383 |
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public void setLifecycleStrategy(LifecycleStrategy lifecycleStrategy) { |
384 |
0 |
this.lifecycleStrategy = lifecycleStrategy; |
385 |
0 |
} |
386 |
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388 |
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389 |
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390 |
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protected void doStart() throws Exception { |
391 |
228 |
forceLazyInitialization(); |
392 |
228 |
if (components != null) { |
393 |
228 |
for (Component component : components.values()) { |
394 |
345 |
startServices(component); |
395 |
345 |
} |
396 |
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} |
397 |
228 |
startRoutes(routes); |
398 |
228 |
} |
399 |
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400 |
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protected void doStop() throws Exception { |
401 |
225 |
stopServices(servicesToClose); |
402 |
225 |
if (components != null) { |
403 |
225 |
for (Component component : components.values()) { |
404 |
366 |
stopServices(component); |
405 |
366 |
} |
406 |
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} |
407 |
225 |
} |
408 |
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409 |
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protected void startRoutes(Collection<Route> routeList) throws Exception { |
410 |
228 |
if (routeList != null) { |
411 |
228 |
for (Route<Exchange> route : routeList) { |
412 |
225 |
List<Service> services = route.getServicesForRoute(); |
413 |
225 |
servicesToClose.addAll(services); |
414 |
225 |
startServices(services); |
415 |
225 |
} |
416 |
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} |
417 |
228 |
} |
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423 |
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protected void forceLazyInitialization() { |
424 |
228 |
getExchangeConverter(); |
425 |
228 |
getInjector(); |
426 |
228 |
getLanguageResolver(); |
427 |
228 |
getTypeConverter(); |
428 |
228 |
} |
429 |
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430 |
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431 |
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432 |
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433 |
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protected ExchangeConverter createExchangeConverter() { |
434 |
228 |
return new DefaultExchangeConverter(); |
435 |
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} |
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437 |
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439 |
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440 |
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protected TypeConverter createTypeConverter() { |
441 |
279 |
return new DefaultTypeConverter(getInjector()); |
442 |
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} |
443 |
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446 |
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447 |
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protected Injector createInjector() { |
448 |
324 |
FactoryFinder finder = new FactoryFinder(); |
449 |
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try { |
450 |
324 |
return (Injector)finder.newInstance("Injector"); |
451 |
324 |
} catch (NoFactoryAvailableException e) { |
452 |
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|
453 |
324 |
return new ReflectionInjector(); |
454 |
0 |
} catch (IllegalAccessException e) { |
455 |
0 |
throw new RuntimeCamelException(e); |
456 |
0 |
} catch (InstantiationException e) { |
457 |
0 |
throw new RuntimeCamelException(e); |
458 |
0 |
} catch (IOException e) { |
459 |
0 |
throw new RuntimeCamelException(e); |
460 |
0 |
} catch (ClassNotFoundException e) { |
461 |
0 |
throw new RuntimeCamelException(e); |
462 |
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} |
463 |
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} |
464 |
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465 |
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466 |
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467 |
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468 |
|
protected ComponentResolver createComponentResolver() { |
469 |
243 |
return new DefaultComponentResolver(); |
470 |
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} |
471 |
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472 |
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473 |
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474 |
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475 |
|
protected Registry createRegistry() { |
476 |
0 |
return new JndiRegistry(); |
477 |
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} |
478 |
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479 |
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480 |
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481 |
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482 |
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483 |
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484 |
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485 |
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486 |
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487 |
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protected Endpoint createEndpoint(String uri) { |
488 |
6 |
Object value = getRegistry().lookup(uri); |
489 |
6 |
if (value instanceof Endpoint) { |
490 |
0 |
return (Endpoint)value; |
491 |
6 |
} else if (value instanceof Processor) { |
492 |
0 |
return new ProcessorEndpoint(uri, this, (Processor)value); |
493 |
6 |
} else if (value != null) { |
494 |
0 |
return convertBeanToEndpoint(uri, value); |
495 |
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} |
496 |
6 |
return null; |
497 |
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} |
498 |
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499 |
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506 |
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507 |
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508 |
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protected Endpoint convertBeanToEndpoint(String uri, Object bean) { |
509 |
0 |
throw new IllegalArgumentException("uri: " + uri + " bean: " + bean |
510 |
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+ " could not be converted to an Endpoint"); |
511 |
|
} |
512 |
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|
513 |
|
} |