/*
* 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.shindig.gadgets.rewrite;
import org.apache.shindig.gadgets.http.HttpRequest;
import org.apache.shindig.gadgets.http.HttpResponse;
import org.apache.shindig.gadgets.http.HttpResponseBuilder;
import org.apache.shindig.gadgets.parse.GadgetHtmlParser;
import java.util.Collections;
import java.util.List;
import com.google.common.collect.Lists;
import com.google.inject.Inject;
/**
* Basic registry -- just iterates over rewriters and invokes them sequentially.
*/
public class DefaultRequestRewriterRegistry implements RequestRewriterRegistry {
protected final List<RequestRewriter> rewriters;
protected final GadgetHtmlParser htmlParser;
@Inject
public DefaultRequestRewriterRegistry(List<RequestRewriter> rewriters,
GadgetHtmlParser htmlParser) {
if (rewriters == null) {
rewriters = Collections.emptyList();
}
this.rewriters = Lists.newLinkedList(rewriters);
this.htmlParser = htmlParser;
}
/** {@inheritDoc} */
public HttpResponse rewriteHttpResponse(HttpRequest req, HttpResponse resp)
throws RewritingException {
MutableContent mc = new MutableContent(htmlParser, resp);
boolean wasRewritten = false;
for (RequestRewriter rewriter : rewriters) {
wasRewritten |= rewriter.rewrite(req, resp, mc);
}
if (wasRewritten) {
return new HttpResponseBuilder(resp).setResponseString(mc.getContent()).create();
}
return resp;
}
}