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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.implementation.widget.provider;
import org.apache.tuscany.sca.assembly.Binding;
import org.apache.tuscany.sca.assembly.ComponentService;
import org.apache.tuscany.sca.host.http.ServletHost;
import org.apache.tuscany.sca.implementation.widget.WidgetImplementation;
import org.apache.tuscany.sca.implementation.widget.WidgetComponentServlet;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.invocation.Invoker;
import org.apache.tuscany.sca.provider.ImplementationProvider;
import org.apache.tuscany.sca.runtime.RuntimeComponent;
import org.apache.tuscany.sca.runtime.RuntimeComponentService;
import org.osoa.sca.ServiceRuntimeException;
/**
* The model representing a resource implementation in an SCA assembly model.
*/
class WidgetImplementationProvider implements ImplementationProvider {
private RuntimeComponent component;
private WidgetImplementation implementation;
private ServletHost servletHost;
private String servletMapping;
/**
* Constructs a new resource implementation provider.
*/
WidgetImplementationProvider(RuntimeComponent component, WidgetImplementation implementation, ServletHost servletHost) {
this.component = component;
this.implementation = implementation;
this.servletHost = servletHost;
}
public Invoker createInvoker(RuntimeComponentService service, Operation operation) {
WidgetImplementationInvoker invoker = new WidgetImplementationInvoker(implementation.getLocationURL());
return invoker;
}
public boolean supportsOneWayInvocation() {
return false;
}
public void start() {
// Determine the widget URI
String widgetURI = null;
for (ComponentService componentService: component.getServices()) {
if (componentService.getName().equals("Widget")) {
if (componentService.getBindings().size() != 0) {
widgetURI = componentService.getBindings().get(0).getURI();
}
break;
}
}
if (widgetURI == null) {
throw new ServiceRuntimeException("Could not find Widget service");
}
// Register the widget's ComponentServlet under the same URI as the widget
String widgetArtifact = implementation.getLocation();
widgetArtifact = widgetArtifact.substring(0, widgetArtifact.lastIndexOf('.'));
widgetArtifact = widgetArtifact.substring(widgetArtifact.lastIndexOf('/') + 1);
servletMapping = widgetURI + "/" + widgetArtifact + ".js";
WidgetComponentServlet widgetComponentServlet = new WidgetComponentServlet(component, servletMapping);
servletHost.addServletMapping(servletMapping, widgetComponentServlet);
}
public void stop() {
servletHost.removeServletMapping(servletMapping);
}
}
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