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// Copyright (C) 2012 The Android Open Source Project
//
// 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.
package com.google.gerrit.httpd.rpc.change;
import com.google.gerrit.httpd.RestApiServlet;
import com.google.gerrit.server.CurrentUser;
import com.google.gerrit.server.OutputFormat;
import com.google.gerrit.server.query.QueryParseException;
import com.google.gerrit.server.query.change.ListChanges;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.BufferedWriter;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@Singleton
public class ListChangesServlet extends RestApiServlet {
private static final long serialVersionUID = 1L;
private static final Logger log = LoggerFactory.getLogger(ListChangesServlet.class);
private final ParameterParser paramParser;
private final Provider<ListChanges> factory;
@Inject
ListChangesServlet(final Provider<CurrentUser> currentUser,
ParameterParser paramParser, Provider<ListChanges> ls) {
super(currentUser);
this.paramParser = paramParser;
this.factory = ls;
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse res)
throws IOException {
ListChanges impl = factory.get();
if (acceptsJson(req)) {
impl.setFormat(OutputFormat.JSON_COMPACT);
}
if (paramParser.parse(impl, req, res)) {
ByteArrayOutputStream buf = new ByteArrayOutputStream();
if (impl.getFormat().isJson()) {
buf.write(JSON_MAGIC);
}
Writer out = new BufferedWriter(new OutputStreamWriter(buf, "UTF-8"));
try {
impl.query(out);
} catch (QueryParseException e) {
res.setStatus(HttpServletResponse.SC_BAD_REQUEST);
sendText(req, res, e.getMessage());
return;
} catch (OrmException e) {
log.error("Error querying /changes/", e);
res.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
return;
}
out.flush();
res.setContentType(impl.getFormat().isJson() ? JSON_TYPE : "text/plain");
res.setCharacterEncoding("UTF-8");
send(req, res, buf.toByteArray());
}
}
}
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