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/*
* Fabric3
* Copyright (c) 2009-2015 Metaform Systems
*
* Licensed 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.
*
* Portions originally based on Apache Tuscany 2007
* licensed under the Apache 2.0 license.
*/
package org.fabric3.binding.ws.introspection;
import javax.xml.stream.Location;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Map;
import org.fabric3.api.annotation.wire.Key;
import org.fabric3.api.binding.ws.model.EndpointReference;
import org.fabric3.api.binding.ws.model.WsBinding;
import org.fabric3.api.model.type.component.BindingHandler;
import org.fabric3.spi.introspection.IntrospectionContext;
import org.fabric3.spi.introspection.xml.AbstractValidatingTypeLoader;
import org.fabric3.spi.introspection.xml.InvalidValue;
import org.fabric3.spi.introspection.xml.LoaderRegistry;
import org.fabric3.spi.introspection.xml.MissingAttribute;
import org.oasisopen.sca.Constants;
import org.oasisopen.sca.annotation.EagerInit;
import org.oasisopen.sca.annotation.Reference;
import static javax.xml.stream.XMLStreamConstants.END_ELEMENT;
import static javax.xml.stream.XMLStreamConstants.START_ELEMENT;
/**
*
*/
@EagerInit
@Key(Constants.SCA_PREFIX + "binding.ws")
public class WsBindingLoader extends AbstractValidatingTypeLoader {
private static final String WSDL_NS = "http://www.w3.org/ns/wsdl-instance";
private static final String WSDL_2004_NS = "http://www.w3.org/2004/08/wsdl-instance";
private final LoaderRegistry registry;
/**
* Constructor.
*
* @param registry the loader registry
*/
public WsBindingLoader(@Reference LoaderRegistry registry) {
this.registry = registry;
addAttributes("uri", "impl", "wsdlElement", "wsdlLocation", "requires", "policySets", "name", "retries");
}
@SuppressWarnings({"unchecked"})
public WsBinding load(XMLStreamReader reader, IntrospectionContext context) throws XMLStreamException {
Location location = reader.getLocation();
String wsdlElement = reader.getAttributeValue(null, "wsdlElement");
String wsdlLocation = reader.getAttributeValue(WSDL_NS, "wsdlLocation");
if (wsdlLocation == null) {
wsdlLocation = reader.getAttributeValue(WSDL_2004_NS, "wsdlLocation");
}
int retries = parseRetries(reader, context);
String bindingName = reader.getAttributeValue(null, "name");
URI targetUri = parseTargetUri(reader, context);
WsBinding binding = new WsBinding(bindingName, targetUri, wsdlLocation, wsdlElement, retries);
validateAttributes(reader, context, binding);
if (wsdlLocation != null && wsdlElement == null) {
MissingAttribute error = new MissingAttribute("A wsdlLocation was specified but not a wsdlElement", location, binding);
context.addError(error);
}
//Load optional sub elements config parameters
while (true) {
switch (reader.next()) {
case START_ELEMENT:
Object elementValue = registry.load(reader, Object.class, context);
Location startAttribute = reader.getLocation();
if (elementValue instanceof BindingHandler) {
binding.addHandler((BindingHandler) elementValue);
} else if (elementValue instanceof Map) {
binding.setConfiguration((Map) elementValue);
} else if (elementValue instanceof EndpointReference) {
EndpointReference endpointReference = (EndpointReference) elementValue;
if (targetUri != null) {
InvalidValue error = new InvalidValue("Cannot specify both a target URI and endpoint reference on a web services binding",
startAttribute,
binding);
context.addError(error);
} else {
binding.setTargetUri(endpointReference.getAddress());
}
}
break;
case END_ELEMENT:
String name = reader.getName().getLocalPart();
if ("binding.ws".equals(name)) {
return binding;
}
break;
case XMLStreamConstants.END_DOCUMENT:
// avoid infinite loop if end element not present
return binding;
}
}
}
private URI parseTargetUri(XMLStreamReader reader, IntrospectionContext context) {
String uri = reader.getAttributeValue(null, "uri");
URI targetUri = null;
if (uri != null) {
try {
targetUri = new URI(uri);
} catch (URISyntaxException ex) {
Location location = reader.getLocation();
InvalidValue failure = new InvalidValue("The web services binding URI is not a valid: " + uri, location);
context.addError(failure);
}
}
return targetUri;
}
private int parseRetries(XMLStreamReader reader, IntrospectionContext context) {
String retries = reader.getAttributeValue(null, "retries");
if (retries != null) {
try {
return Integer.parseInt(retries);
} catch (NumberFormatException e) {
Location location = reader.getLocation();
InvalidValue error = new InvalidValue("The retries attribute must be a valid number", location);
context.addError(error);
}
}
return 0;
}
}
