/**
* 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.waveprotocol.box.server.rpc;
import com.google.common.annotations.VisibleForTesting;
import com.google.gson.Gson;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import com.google.inject.name.Named;
import com.google.wave.api.SearchResult;
import com.google.wave.api.SearchResult.Digest;
import com.google.wave.api.data.converter.EventDataConverterManager;
import org.waveprotocol.box.search.SearchProto.SearchRequest;
import org.waveprotocol.box.server.authentication.SessionManager;
import org.waveprotocol.box.server.robots.OperationServiceRegistry;
import org.waveprotocol.box.server.robots.util.ConversationUtil;
import org.waveprotocol.box.server.waveserver.WaveletProvider;
import org.waveprotocol.wave.model.wave.ParticipantId;
import java.io.IOException;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Provides search result digests in JSON format.
*
* @author yurize@apache.org (Yuri Z.)
*/
@SuppressWarnings("serial")
@Singleton
public final class NotificationServlet extends AbstractSearchServlet {
private static final Gson GSON = new Gson();
@Inject
public NotificationServlet(SessionManager sessionManager,
EventDataConverterManager converterManager,
@Named("DataApiRegistry") OperationServiceRegistry operationRegistry,
WaveletProvider waveletProvider, ConversationUtil conversationUtil, ProtoSerializer serializer) {
super(conversationUtil, converterManager, waveletProvider, sessionManager, operationRegistry);
}
/**
* Creates HTTP response to the search query. Main entrypoint for this class.
*/
@Override
@VisibleForTesting
protected void doGet(HttpServletRequest req, HttpServletResponse response) throws IOException {
ParticipantId user = sessionManager.getLoggedInUser(req.getSession(false));
if (user == null) {
response.setStatus(HttpServletResponse.SC_FORBIDDEN);
return;
}
SearchRequest searchRequest = parseSearchRequest(req, response);
SearchResult searchResult = performSearch(searchRequest, user);
serializeObjectToServlet(searchResult.getDigests(), response);
}
/**
* Writes the json with search results to Response.
*/
private void serializeObjectToServlet(List<Digest> digests, HttpServletResponse resp)
throws IOException {
resp.setStatus(HttpServletResponse.SC_OK);
resp.setContentType("text/html; charset=utf8");
// This is to make sure the fetched data is fresh - since the w3c spec
// is rarely respected.
resp.setHeader("Cache-Control", "no-store");
resp.getWriter().append(GSON.toJson(digests));
}
}