AtomServiceBindingProvider.java

/*
 * 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.atom.provider;

import org.apache.tuscany.sca.binding.atom.AtomBinding;
import org.apache.tuscany.sca.databinding.Mediator;
import org.apache.tuscany.sca.host.http.ServletHost;
import org.apache.tuscany.sca.interfacedef.InterfaceContract;
import org.apache.tuscany.sca.invocation.MessageFactory;
import org.apache.tuscany.sca.provider.ServiceBindingProvider;
import org.apache.tuscany.sca.runtime.Invocable;
import org.apache.tuscany.sca.runtime.RuntimeComponent;
import org.apache.tuscany.sca.runtime.RuntimeComponentService;
import org.apache.tuscany.sca.runtime.RuntimeEndpoint;

/**
 * Implementation of the Atom binding provider.
 *
 * @version $Rev$ $Date$
 */
class AtomServiceBindingProvider implements ServiceBindingProvider {
    private MessageFactory messageFactory;

    private RuntimeEndpoint endpoint;

    private RuntimeComponent component;
    private RuntimeComponentService service;
    private InterfaceContract serviceContract;
    private AtomBinding binding;
    private ServletHost servletHost;
    private Mediator mediator;
    
    private String servletMapping;
    private String bindingURI;

    AtomServiceBindingProvider(RuntimeEndpoint endpoint,
                               MessageFactory messageFactory,
                               Mediator mediator,
                               ServletHost servletHost) {
        this.endpoint = endpoint;
        this.component = (RuntimeComponent)endpoint.getComponent();
        this.service = (RuntimeComponentService)endpoint.getService();
        this.binding = (AtomBinding) endpoint.getBinding();

        this.servletHost = servletHost;
        this.messageFactory = messageFactory;
        this.mediator = mediator;

        // TUSCANY-3166
        this.serviceContract = endpoint.getComponentTypeServiceInterfaceContract();
    }

    public InterfaceContract getBindingInterfaceContract() {
        return serviceContract;
    }
    
    public boolean supportsOneWayInvocation() {
        return false;
    }

    public void start() {
        Invocable wire = (RuntimeEndpoint) endpoint;

        AtomBindingListenerServlet servlet =
            new AtomBindingListenerServlet(wire, messageFactory, mediator, binding.getTitle(), binding.getDescription());

        servletMapping = binding.getURI();
        if (!servletMapping.endsWith("/")) {
            servletMapping += "/";
        }
        if (!servletMapping.endsWith("*")) {
            servletMapping += "*";
        }
        servletHost.addServletMapping(servletMapping, servlet);
        
        bindingURI = binding.getURI();
        if (!bindingURI.endsWith("/")) {
            bindingURI += "/";
        }

        String mappedURI = servletHost.addServletMapping(bindingURI, servlet);
        String deployedURI = mappedURI;
        if (deployedURI.endsWith("*")) {
            deployedURI = deployedURI.substring(0, deployedURI.length() - 1);
        }
        if (deployedURI.endsWith("/")) {
            deployedURI = deployedURI.substring(0, deployedURI.length() - 1);
        }
        binding.setURI(deployedURI);
    }

    public void stop() {
        servletHost.removeServletMapping(servletMapping);
        servletHost.removeServletMapping(bindingURI);
    }
}