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/*
* 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.tuscany.sca.binding.http.provider;
import javax.servlet.Servlet;
import org.apache.tuscany.sca.binding.http.HTTPBinding;
import org.apache.tuscany.sca.binding.http.operationselector.HTTPDefaultOperationSelector;
import org.apache.tuscany.sca.binding.http.wireformat.HTTPDefaultWireFormat;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.host.http.ServletHost;
import org.apache.tuscany.sca.interfacedef.InterfaceContract;
import org.apache.tuscany.sca.invocation.InvocationChain;
import org.apache.tuscany.sca.invocation.MessageFactory;
import org.apache.tuscany.sca.invocation.Phase;
import org.apache.tuscany.sca.provider.EndpointProvider;
import org.apache.tuscany.sca.provider.OperationSelectorProvider;
import org.apache.tuscany.sca.provider.OperationSelectorProviderFactory;
import org.apache.tuscany.sca.provider.ProviderFactoryExtensionPoint;
import org.apache.tuscany.sca.provider.WireFormatProvider;
import org.apache.tuscany.sca.provider.WireFormatProviderFactory;
import org.apache.tuscany.sca.runtime.RuntimeEndpoint;
/**
* Implementation of an HTTP binding provider.
*
* @version $Rev$ $Date$
*/
public class HTTPServiceBindingProvider implements EndpointProvider {
private ExtensionPointRegistry extensionPoints;
private RuntimeEndpoint endpoint;
private HTTPBinding binding;
private MessageFactory messageFactory;
private OperationSelectorProvider osProvider;
private WireFormatProvider wfProvider;
private ServletHost servletHost;
private String servletMapping;
private InterfaceContract interfaceContract;
public HTTPServiceBindingProvider(RuntimeEndpoint endpoint,
ExtensionPointRegistry extensionPoints,
MessageFactory messageFactory,
ServletHost servletHost) {
this.endpoint = endpoint;
this.binding = (HTTPBinding)endpoint.getBinding();
this.extensionPoints = extensionPoints;
this.messageFactory = messageFactory;
this.servletHost = servletHost;
if (binding.getOperationSelector() == null) {
binding.setOperationSelector(new HTTPDefaultOperationSelector());
}
if (binding.getRequestWireFormat() == null) {
binding.setRequestWireFormat(new HTTPDefaultWireFormat());
}
if (binding.getResponseWireFormat() == null) {
binding.setResponseWireFormat(new HTTPDefaultWireFormat());
}
ProviderFactoryExtensionPoint providerFactories = extensionPoints.getExtensionPoint(ProviderFactoryExtensionPoint.class);
if (binding.getOperationSelector() != null) {
// Configure the interceptors for operation selection
OperationSelectorProviderFactory osProviderFactory = (OperationSelectorProviderFactory) providerFactories.getProviderFactory(binding.getOperationSelector().getClass());
if (osProviderFactory != null) {
this.osProvider = osProviderFactory.createServiceOperationSelectorProvider(endpoint);
}
}
if (binding.getRequestWireFormat() != null && binding.getResponseWireFormat() != null) {
// Configure the interceptors for wire format
WireFormatProviderFactory wfProviderFactory = (WireFormatProviderFactory) providerFactories.getProviderFactory(binding.getRequestWireFormat().getClass());
if (wfProviderFactory != null) {
this.wfProvider = wfProviderFactory.createServiceWireFormatProvider(endpoint);
}
}
//clone the service contract to avoid databinding issues
try {
interfaceContract = (InterfaceContract)endpoint.getComponentServiceInterfaceContract().clone();
// configure data binding
if (this.wfProvider != null) {
wfProvider.configureWireFormatInterfaceContract(interfaceContract);
}
} catch(CloneNotSupportedException e) {
// shouldn't happen
}
servletMapping = binding.getURI();
if (!servletMapping.endsWith("/")) {
servletMapping += "/";
}
if (!servletMapping.endsWith("*")) {
servletMapping += "*";
}
}
public void start() {
/**
* Consider three scenarios here :
* - Default servlet using service level operation
* - Default servlet using GET, PUT, POST, DELETE operations mapped to interface names with same name
* - RPC over HTTP like : http://localhost:8080/HelloworldComponent/Helloworld/sayHello?name=Petra
*/
if (binding.getOperationSelector() == null || binding.getRequestWireFormat() == null || binding.getResponseWireFormat() == null) {
throw new IllegalStateException("Binding operation selector and/or wire formats not properly setup.");
}
Servlet servlet = new HTTPBindingServiceServlet(endpoint, messageFactory);
// Create our HTTP service listener Servlet and register it with the
// Servlet host
servletMapping = binding.getURI();
if (!servletMapping.endsWith("/")) {
servletMapping += "/";
}
if (!servletMapping.endsWith("*")) {
servletMapping += "*";
}
String deployedURI = servletHost.addServletMapping(servletMapping, servlet);
endpoint.setDeployedURI(deployedURI);
}
public void stop() {
servletHost.removeServletMapping(servletMapping);
}
public InterfaceContract getBindingInterfaceContract() {
return interfaceContract;
}
public boolean supportsOneWayInvocation() {
return false;
}
/**
* Add specific http interceptor to invocation chain
*/
public void configure() {
InvocationChain bindingChain = endpoint.getBindingInvocationChain();
if(osProvider != null) {
bindingChain.addInterceptor(Phase.SERVICE_BINDING_OPERATION_SELECTOR, osProvider.createInterceptor());
}
if (wfProvider != null) {
bindingChain.addInterceptor(Phase.SERVICE_BINDING_WIREFORMAT, wfProvider.createInterceptor());
}
}
}
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