ru.org.linux.spring.StatUpdater.java Source code

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Here is the source code for ru.org.linux.spring.StatUpdater.java

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/*
 * Copyright 1998-2010 Linux.org.ru
 *    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 ru.org.linux.spring;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowCallbackHandler;
import org.springframework.jdbc.core.simple.SimpleJdbcCall;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import javax.sql.DataSource;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

@Component
public class StatUpdater {
    private static final Log logger = LogFactory.getLog(StatUpdater.class);
    private static final int MAX_EVENTS = 1000;

    private SimpleJdbcCall statUpdate;
    private SimpleJdbcCall statUpdate2;
    private SimpleJdbcCall statMonthly;

    private JdbcTemplate jdbcTemplate;

    @Autowired
    public void setDataSource(DataSource dataSource) {
        statUpdate = new SimpleJdbcCall(dataSource).withFunctionName("stat_update");
        statUpdate2 = new SimpleJdbcCall(dataSource).withFunctionName("stat_update2");
        statMonthly = new SimpleJdbcCall(dataSource).withFunctionName("update_monthly_stats");
        jdbcTemplate = new JdbcTemplate(dataSource);
    }

    @Scheduled(fixedDelay = 10 * 60 * 1000)
    public void updateStats() {
        logger.debug("Updating statistics");

        statUpdate.execute();
        statUpdate2.execute();
        statMonthly.execute();
    }

    @Scheduled(fixedDelay = 60 * 60 * 1000)
    public void creanEvents() {
        final List<Integer> deleteList = new ArrayList<Integer>();

        jdbcTemplate.query(
                "select userid, count(user_events.id) from user_events group by userid order by count desc limit 10",
                new RowCallbackHandler() {
                    @Override
                    public void processRow(ResultSet rs) throws SQLException {
                        if (rs.getInt("count") > MAX_EVENTS) {
                            deleteList.add(rs.getInt("userid"));
                        }
                    }
                });

        for (int id : deleteList) {
            logger.info("Cleaning messages for userid=" + id);

            jdbcTemplate.update(
                    "DELETE FROM user_events WHERE user_events.id IN (SELECT id FROM user_events WHERE userid=? ORDER BY event_date DESC OFFSET ?)",
                    id, MAX_EVENTS);
        }
    }
}