diff options
Diffstat (limited to 'sca-java-2.x/tags/2.0.1-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/BindingURIBuilderImpl.java')
| -rw-r--r-- | sca-java-2.x/tags/2.0.1-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/BindingURIBuilderImpl.java | 364 |
1 files changed, 364 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/BindingURIBuilderImpl.java b/sca-java-2.x/tags/2.0.1-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/BindingURIBuilderImpl.java new file mode 100644 index 0000000000..eff1e9f083 --- /dev/null +++ b/sca-java-2.x/tags/2.0.1-RC1/modules/builder/src/main/java/org/apache/tuscany/sca/builder/impl/BindingURIBuilderImpl.java @@ -0,0 +1,364 @@ +/* + * 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.builder.impl; + +import java.net.URI; +import java.net.URISyntaxException; +import java.util.List; +import java.util.Map; + +import javax.xml.namespace.QName; + +import org.apache.tuscany.sca.assembly.Binding; +import org.apache.tuscany.sca.assembly.Component; +import org.apache.tuscany.sca.assembly.ComponentService; +import org.apache.tuscany.sca.assembly.Composite; +import org.apache.tuscany.sca.assembly.Implementation; +import org.apache.tuscany.sca.assembly.SCABinding; +import org.apache.tuscany.sca.assembly.Service; +import org.apache.tuscany.sca.assembly.builder.BuilderContext; +import org.apache.tuscany.sca.assembly.builder.CompositeBuilder; +import org.apache.tuscany.sca.assembly.builder.CompositeBuilderException; +import org.apache.tuscany.sca.assembly.builder.Messages; +import org.apache.tuscany.sca.core.ExtensionPointRegistry; +import org.apache.tuscany.sca.definitions.Definitions; +import org.apache.tuscany.sca.monitor.Monitor; + +/** + * Configuration of binding URIs. + * + * @version $Rev$ $Date$ + */ +public class BindingURIBuilderImpl implements CompositeBuilder { + + private static final QName DEFAULT = new QName("default"); + + public BindingURIBuilderImpl(ExtensionPointRegistry registry) { + } + + /** + * Called by CompositeBindingURIBuilderImpl + * + * @param composite the composite to be configured + */ + public Composite build(Composite composite, BuilderContext context) + throws CompositeBuilderException { + configureBindingURIs(composite, null, context.getDefinitions(), context.getBindingBaseURIs(), context.getMonitor()); + return composite; + } + + + /** + * Fully resolve the binding URIs based on available information. This includes information + * from the ".composite" files, from resources associated with the binding, e.g. WSDL files, + * from any associated policies and from the default information for each binding type. + * + * NOTE: This method repeats some of the processing performed by the configureComponents() + * method above. The duplication is needed because NodeConfigurationServiceImpl + * calls this method without previously calling configureComponents(). In the + * normal builder sequence used by CompositeBuilderImpl, both of these methods + * are called. + * + * TODO: Share the URL calculation algorithm with the configureComponents() method above + * although keeping the configureComponents() methods signature as is because when + * a composite is actually build in a node the node default information is currently + * available + * + * @param composite the composite to be configured + * @param uri the path to the composite provided through any nested composite component implementations + * @param defaultBindings list of default binding configurations + */ + private void configureBindingURIs(Composite composite, + String uri, + Definitions definitions, + Map<QName, List<String>> defaultBindings, + Monitor monitor) throws CompositeBuilderException { + + String parentComponentURI = uri; + + monitor.pushContext("Composite: " + composite.getName().toString()); + try { + // Process nested composites recursively + for (Component component : composite.getComponents()) { + Implementation implementation = component.getImplementation(); + if (implementation instanceof Composite) { + // Process nested composite + configureBindingURIs((Composite)implementation, component.getURI(), definitions, defaultBindings, monitor); + } + } + + // Initialize composite service binding URIs + List<Service> compositeServices = composite.getServices(); + for (Service service : compositeServices) { + + // Initialize binding names and URIs + for (Binding binding : service.getBindings()) { + constructBindingURI(parentComponentURI, composite, service, binding, defaultBindings, monitor); + } + } + + // Initialize component service binding URIs + for (Component component : composite.getComponents()) { + + monitor.pushContext("Component: " + component.getName()); + try { + for (ComponentService service : component.getServices()) { + + // Initialize binding names and URIs + for (Binding binding : service.getBindings()) { + constructBindingURI(component, service, binding, defaultBindings, monitor); + } + } + } finally { + monitor.popContext(); + } + } + } finally { + monitor.popContext(); + } + } + + /** + * URI construction for composite bindings based on Assembly Specification section 1.7.2, This method + * assumes that the component URI part of the binding URI is formed from the part to the + * composite in question and just calls the generic constructBindingURI method with this + * information + * + * @param parentComponentURI + * @param composite + * @param service + * @param binding + * @param defaultBindings + */ + private void constructBindingURI(String parentComponentURI, + Composite composite, + Service service, + Binding binding, + Map<QName, List<String>> defaultBindings, + Monitor monitor) throws CompositeBuilderException { + // This is a composite service so there is no component to provide a component URI + // The path to this composite (through nested composites) is used. + constructBindingURI(parentComponentURI, service, binding, defaultBindings, monitor); + } + + /** + * URI construction for component bindings based on Assembly Specification section 1.7.2. This method + * calculates the component URI part based on component information before calling the generic + * constructBindingURI method + * + * @param component the component that holds the service + * @param service the service that holds the binding + * @param binding the binding for which the URI is being constructed + * @param defaultBindings the list of default binding configurations + */ + private void constructBindingURI(Component component, + Service service, + Binding binding, + Map<QName, List<String>> defaultBindings, + Monitor monitor) throws CompositeBuilderException { + constructBindingURI(component.getURI(), service, binding, defaultBindings, monitor); + } + + /** + * Generic URI construction for bindings based on Assembly Specification section 1.7.2 + * + * @param componentURIString the string version of the URI part that comes from the component name + * @param service the service in question + * @param binding the binding for which the URI is being constructed + * @param includeBindingName when set true the serviceBindingURI part should be used + * @param defaultBindings the list of default binding configurations + * @throws CompositeBuilderException + */ + private void constructBindingURI(String componentURIString, + Service service, + Binding binding, + Map<QName, List<String>> defaultBindings, + Monitor monitor) throws CompositeBuilderException { + + try { + + boolean includeBindingName = !service.getName().equals(binding.getName()); + + // calculate the service binding URI + URI bindingURI = binding.getURI() == null ? null : new URI(binding.getURI()); + if (binding instanceof SCABinding) { + // Per assembly spec, the @uri for service side binding.sca should be ignored + bindingURI = null; + } + + // if the user has provided an absolute binding URI then use it + if (bindingURI != null && bindingURI.isAbsolute()) { + return; + } + + String serviceName = service.getName(); + // Get the service binding name + String bindingName; + if (binding.getName() != null) { + bindingName = binding.getName(); + } else { + bindingName = serviceName; + } + + // calculate the component URI + URI componentURI = null; + if (componentURIString != null) { + componentURI = new URI(addSlashToPath(componentURIString)); + } + + // calculate the base URI + URI baseURI = null; + if (defaultBindings != null) { + List<String> uris = defaultBindings.get(binding.getType()); + if (uris != null && uris.size() > 0) { + baseURI = new URI(addSlashToPath(uris.get(0))); + } else { + uris = defaultBindings.get(DEFAULT); + if (uris != null && uris.size() > 0) { + baseURI = new URI(addSlashToPath(uris.get(0))); + } + } + } + + binding.setURI(constructBindingURI(baseURI, + componentURI, + bindingURI, + serviceName, + includeBindingName, + bindingName)); + } catch (URISyntaxException ex) { + Monitor.error(monitor, + this, + Messages.ASSEMBLY_VALIDATION, + "URLSyntaxException", + componentURIString, + service.getName(), + binding.getName()); + } + } + + /** + * Use to ensure that URI paths end in "/" as here we want to maintain the + * last path element of an base URI when other URI are resolved against it. This is + * not the default behaviour of URI resolution as defined in RFC 2369 + * + * @param path the path string to which the "/" is to be added + * @return the resulting path with a "/" added if it not already there + */ + private static String addSlashToPath(String path) { + if (path.endsWith("/") || path.endsWith("#")) { + return path; + } else { + return path + "/"; + } + } + + /** + * Concatenate binding URI parts together based on Assembly Specification section 1.7.2 + * + * @param baseURI the base of the binding URI + * @param componentURI the middle part of the binding URI derived from the component name + * @param bindingURI the end part of the binding URI + * @param includeBindingName when set true the binding name part should be used + * @param bindingName the binding name + * @return the resulting URI as a string + */ + private static String constructBindingURI(URI baseURI, + URI componentURI, + URI bindingURI, + String serviceName, + boolean includeBindingName, + String bindingName) { + String name = includeBindingName ? serviceName + "/" + bindingName : serviceName; + String uriString; + + if (baseURI == null) { + if (componentURI == null) { + if (bindingURI != null) { + uriString = name + "/" + bindingURI.toString(); + } else { + uriString = name; + } + } else { + if (bindingURI != null) { + if (bindingURI.toString().startsWith("/")) { + uriString = componentURI.resolve(bindingURI).toString(); + } else { + uriString = componentURI.resolve(name + "/" + bindingURI).toString(); + } + } else { + uriString = componentURI.resolve(name).toString(); + } + } + } else { + if (componentURI == null) { + if (bindingURI != null) { + uriString = basedURI(baseURI, bindingURI).toString(); + } else { + uriString = basedURI(baseURI, URI.create(name)).toString(); + } + } else { + if (bindingURI != null) { + if (bindingURI.toString().startsWith("/")) { + uriString = basedURI(baseURI, componentURI.resolve(bindingURI)).toString(); + } else { + uriString = basedURI(baseURI, componentURI.resolve(name + "/" + bindingURI)).toString(); + } + } else { + uriString = basedURI(baseURI, componentURI.resolve(name)).toString(); + } + } + } + + // tidy up by removing any trailing "/" + if (uriString.endsWith("/")) { + uriString = uriString.substring(0, uriString.length() - 1); + } + + URI uri = URI.create(uriString); + if (!uri.isAbsolute()) { + uri = URI.create("/").resolve(uri); + } + return uri.toString(); + } + + /** + * Combine a URI with a base URI. + * + * @param baseURI + * @param uri + * @return + */ + private static URI basedURI(URI baseURI, URI uri) { + if (uri.getScheme() != null) { + return uri; + } + String str = uri.toString(); + if (str.startsWith("/")) { + str = str.substring(1); + } + return URI.create(baseURI.toString() + str).normalize(); + } + + public String getID() { + return "org.apache.tuscany.sca.assembly.builder.BindingURIBuilder"; + } + +} |