example.springdata.redis.sentinel.RedisSentinelApplicationConfig.java Source code

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Here is the source code for example.springdata.redis.sentinel.RedisSentinelApplicationConfig.java

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/*
 * Copyright 2014 the original author or 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 example.springdata.redis.sentinel;

import javax.annotation.PreDestroy;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.RedisSentinelConfiguration;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.util.StopWatch;

/**
 * @author Christoph Strobl
 */
@Configuration
public class RedisSentinelApplicationConfig {

    static final RedisSentinelConfiguration SENTINEL_CONFIG = new RedisSentinelConfiguration().master("mymaster") //
            .sentinel("localhost", 26379) //
            .sentinel("localhost", 26380) //
            .sentinel("localhost", 26381);

    @Autowired
    RedisConnectionFactory factory;

    public static void main(String[] args) throws Exception {

        ApplicationContext context = SpringApplication.run(RedisSentinelApplicationConfig.class, args);

        RedisConnectionFactory factory = context.getBean(RedisConnectionFactory.class);

        StringRedisTemplate template = new StringRedisTemplate();
        template.setConnectionFactory(factory);
        template.afterPropertiesSet();

        template.opsForValue().set("loop-forever", "0");

        StopWatch stopWatch = new StopWatch();

        while (true) {

            try {
                String value = "IT:= " + template.opsForValue().increment("loop-forever", 1);
                printBackFromErrorStateInfoIfStopWatchIsRunning(stopWatch);
                System.out.println(value);
            } catch (RuntimeException e) {
                System.err.println(e.getCause().getMessage());
                startStopWatchIfNotRunning(stopWatch);
            }

            Thread.sleep(1000);
        }
    }

    @Bean
    public RedisConnectionFactory connectionFactory() {
        return new JedisConnectionFactory(sentinelConfig());
    }

    @Bean
    public RedisSentinelConfiguration sentinelConfig() {
        return SENTINEL_CONFIG;
    }

    /**
     * Clear database before shut down.
     */
    @PreDestroy
    public void flushTestDb() {
        factory.getConnection().flushDb();
    }

    private static void startStopWatchIfNotRunning(StopWatch stopWatch) {

        if (!stopWatch.isRunning()) {
            stopWatch.start();
        }
    }

    private static void printBackFromErrorStateInfoIfStopWatchIsRunning(StopWatch stopWatch) {

        if (stopWatch.isRunning()) {
            stopWatch.stop();
            System.err.println("INFO: Recovered after: " + stopWatch.getLastTaskInfo().getTimeSeconds());
        }
    }
}