/**
* Copyright (C) 2014-2016 LinkedIn Corp. (pinot-core@linkedin.com)
*
* 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.linkedin.pinot.broker.servlet;
import com.linkedin.pinot.common.config.TableNameBuilder;
import com.linkedin.pinot.common.utils.CommonConstants;
import com.linkedin.pinot.routing.TimeBoundaryService;
import java.io.IOException;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/*
* A servlet to print the time boundary info for a table, if it exists.
* Examples:
* curl broker:port/debug/timeBoundary/table will print the time boundar of offline table.
* curl broker:port/debug/timeBoundary/table_OFFLINE will do the same as above.
*
* Realtime tables do not have time boundary as of now, so it will return an empty json object
*
*/
public class PinotBrokerTimeBoundaryDebugServlet extends HttpServlet {
private static final Logger LOGGER = LoggerFactory.getLogger(PinotBrokerTimeBoundaryDebugServlet.class);
private TimeBoundaryService _timeBoundaryService;
@Override
public void init(ServletConfig config) throws ServletException {
_timeBoundaryService = (TimeBoundaryService) config.getServletContext().getAttribute(TimeBoundaryService.class.toString());
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String tableName = req.getPathInfo();
final String emptyResponse = "{}";
resp.setContentType("application/json");
boolean found = false;
try {
if (tableName.startsWith("/")) {
// Drop leading slash
tableName = tableName.substring(1);
}
if (!tableName.isEmpty()) {
CommonConstants.Helix.TableType tableType = TableNameBuilder.getTableTypeFromTableName(tableName);
if (tableType == null) {
tableName = TableNameBuilder.OFFLINE.tableNameWithType(tableName);
}
TimeBoundaryService.TimeBoundaryInfo tbInfo = _timeBoundaryService.getTimeBoundaryInfoFor(tableName);
if (tbInfo != null) {
resp.getOutputStream().print(tbInfo.toJsonString());
found = true;
}
}
} catch (Exception e) {
// Ignore exceptions
}
if (!found) {
resp.getOutputStream().print(emptyResponse);
}
resp.getOutputStream().flush();
resp.getOutputStream().close();
}
}