com.turn.splicer.ConfigServlet.java Source code

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Here is the source code for com.turn.splicer.ConfigServlet.java

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/**
 * Copyright 2015-2016 The Splicer Query Engine Authors
 *
 * 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.turn.splicer;

import com.turn.splicer.hbase.RegionUtil;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

import com.fasterxml.jackson.core.JsonEncoding;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class ConfigServlet extends HttpServlet {

    private static final Logger LOG = LoggerFactory.getLogger(ConfigServlet.class);

    public static RegionUtil REGION_UTIL = new RegionUtil();

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
        try {
            doGetWork(request, response);
        } catch (IOException e) {
            LOG.error("IOException which processing GET request", e);
        } catch (Exception e) {
            LOG.error("Exception which processing GET request", e);
        }
    }

    private void doGetWork(HttpServletRequest request, HttpServletResponse response) throws IOException {
        response.setContentType("application/json");
        JsonGenerator generator = new JsonFactory().createGenerator(response.getOutputStream(), JsonEncoding.UTF8);
        Config.get().writeAsJson(generator);
        generator.close();
    }

}