/**
* 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.cxf.javascript;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.URI;
import java.nio.charset.Charset;
import java.util.Collection;
import java.util.Map;
import org.apache.cxf.binding.soap.interceptor.EndpointSelectionInterceptor;
import org.apache.cxf.common.i18n.UncheckedException;
import org.apache.cxf.common.util.StringUtils;
import org.apache.cxf.common.util.UrlUtils;
import org.apache.cxf.endpoint.Endpoint;
import org.apache.cxf.helpers.IOUtils;
import org.apache.cxf.interceptor.Fault;
import org.apache.cxf.interceptor.Interceptor;
import org.apache.cxf.javascript.service.ServiceJavascriptBuilder;
import org.apache.cxf.javascript.types.SchemaJavascriptBuilder;
import org.apache.cxf.message.Message;
import org.apache.cxf.message.MessageImpl;
import org.apache.cxf.phase.AbstractPhaseInterceptor;
import org.apache.cxf.phase.Phase;
import org.apache.cxf.service.model.EndpointInfo;
import org.apache.cxf.service.model.SchemaInfo;
import org.apache.cxf.service.model.ServiceInfo;
import org.apache.cxf.transport.Conduit;
public class JavascriptGetInterceptor extends AbstractPhaseInterceptor<Message> {
public static final Interceptor<? extends Message> INSTANCE = new JavascriptGetInterceptor();
private static final String JS_UTILS_PATH = "/org/apache/cxf/javascript/cxf-utils.js";
private static final Charset UTF8 = Charset.forName("utf-8");
private static final String NO_UTILS_QUERY_KEY = "nojsutils";
private static final String CODE_QUERY_KEY = "js";
public JavascriptGetInterceptor() {
super(Phase.READ);
getAfter().add(EndpointSelectionInterceptor.class.getName());
}
public void handleMessage(Message message) throws Fault {
String method = (String)message.get(Message.HTTP_REQUEST_METHOD);
String query = (String)message.get(Message.QUERY_STRING);
if (!"GET".equals(method) || StringUtils.isEmpty(query)) {
return;
}
String baseUri = (String)message.get(Message.REQUEST_URL);
URI uri = null;
try {
uri = URI.create(baseUri);
} catch (IllegalArgumentException iae) {
//invalid URI, ignore and continue
return;
}
Map<String, String> map = UrlUtils.parseQueryString(query);
if (isRecognizedQuery(map, uri, message.getExchange().getEndpoint().getEndpointInfo())) {
try {
Conduit c = message.getExchange().getDestination().getBackChannel(message);
Message mout = new MessageImpl();
mout.setExchange(message.getExchange());
message.getExchange().setOutMessage(mout);
mout.put(Message.CONTENT_TYPE, "application/javascript;charset=UTF-8");
c.prepare(mout);
OutputStream os = mout.getContent(OutputStream.class);
writeResponse(uri, map, os, message.getExchange().getEndpoint());
} catch (IOException ioe) {
throw new Fault(ioe);
}
}
}
private boolean isRecognizedQuery(Map<String, String> map, URI uri, EndpointInfo endpointInfo) {
if (uri == null) {
return false;
}
if (map.containsKey(CODE_QUERY_KEY)) {
return endpointInfo.getAddress().contains(UrlUtils.getStem(uri.getSchemeSpecificPart()));
}
return false;
}
public static void writeUtilsToResponseStream(Class<?> referenceClass, OutputStream outputStream) {
InputStream utils = referenceClass.getResourceAsStream(JS_UTILS_PATH);
if (utils == null) {
throw new RuntimeException("Unable to get stream for " + JS_UTILS_PATH);
}
try {
IOUtils.copyAndCloseInput(utils, outputStream);
outputStream.flush();
} catch (IOException e) {
throw new RuntimeException("Failed to write javascript utils to HTTP response.", e);
}
}
private void writeResponse(URI uri, Map<String, String> map, OutputStream os, Endpoint serverEndpoint) {
OutputStreamWriter writer = new OutputStreamWriter(os, UTF8);
if (!map.containsKey(NO_UTILS_QUERY_KEY)) {
writeUtilsToResponseStream(JavascriptGetInterceptor.class, os);
}
if (map.containsKey(CODE_QUERY_KEY)) {
ServiceInfo serviceInfo = serverEndpoint.getService().getServiceInfos().get(0);
Collection<SchemaInfo> schemata = serviceInfo.getSchemas();
// we need to move this to the bus.
BasicNameManager nameManager = BasicNameManager.newNameManager(serviceInfo, serverEndpoint);
NamespacePrefixAccumulator prefixManager = new NamespacePrefixAccumulator(serviceInfo
.getXmlSchemaCollection());
try {
for (SchemaInfo schema : schemata) {
SchemaJavascriptBuilder builder = new SchemaJavascriptBuilder(serviceInfo
.getXmlSchemaCollection(), prefixManager, nameManager);
String allThatJavascript = builder.generateCodeForSchema(schema.getSchema());
writer.append(allThatJavascript);
}
ServiceJavascriptBuilder serviceBuilder
= new ServiceJavascriptBuilder(serviceInfo,
serverEndpoint.getEndpointInfo().getAddress(),
prefixManager,
nameManager);
serviceBuilder.walk();
String serviceJavascript = serviceBuilder.getCode();
writer.append(serviceJavascript);
writer.flush();
} catch (IOException e) {
throw new UncheckedException(e);
}
} else {
throw new RuntimeException("Invalid query " + uri.toString());
}
}
}