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/*******************************************************************************
* Copyright 2016-2017 ZTE, Inc. and others.
*
* 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 org.onap.msb.apiroute.wrapper.util;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.URL;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle;
import org.apache.commons.lang3.StringUtils;
import org.onap.msb.apiroute.wrapper.InitRouteServiceWrapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
public class JedisUtil {
private static final Logger LOGGER = LoggerFactory.getLogger(JedisUtil.class);
private static String host = "127.0.0.1";
private static int port = 6379;
private static int connectionTimeout = 2000;
private static int DEFAULT_DB_INDEX = 0;
private volatile static JedisPool jedisPool = null;
public static String propertiesName = "redis.properties";
private static final String LINE_SEPARATOR = System.getProperty("line.separator");
private JedisUtil() {
// private constructor
}
private synchronized static JedisPool initialPool() throws IOException {
JedisPoolConfig config = new JedisPoolConfig();
config.setMaxTotal(50);
config.setMaxIdle(30);
config.setMaxWaitMillis(5000);
config.setTestOnBorrow(false);
config.setTestOnReturn(true);
URL urlPath = JedisUtil.class.getResource("/ext/redisConf/redis.properties");
if (urlPath != null) {
String propertiesPath = urlPath.getPath();
File propertiesFile = new File(propertiesPath);
if (propertiesFile.exists()) {
BufferedInputStream inputStream =
new BufferedInputStream(new FileInputStream(propertiesPath));
ResourceBundle bundle = new PropertyResourceBundle(inputStream);
if (bundle == null) {
throw new IllegalArgumentException("[redis.properties] is not found!");
}
// Set up the connection pool basic information
String strHost = bundle.getString("redis.host");
if (StringUtils.isNotEmpty(strHost)) {
host = strHost;
}
// redis port: first read from env
if (StringUtils.isNotBlank(System.getenv("APIGATEWAY_REDIS_PORT"))) {
port = Integer.parseInt(System.getenv("APIGATEWAY_REDIS_PORT"));
} else {
String strPort = bundle.getString("redis.port");
if (StringUtils.isNotEmpty(strPort)) {
port = Integer.parseInt(strPort);
}
}
String strTimeout = bundle.getString("redis.connectionTimeout");
if (StringUtils.isNotEmpty(strTimeout)) {
connectionTimeout = Integer.parseInt(strTimeout);
}
String strDbIndex = bundle.getString("redis.db_index");
if (StringUtils.isNotEmpty(strDbIndex)) {
DEFAULT_DB_INDEX = Integer.parseInt(strDbIndex);
}
String strMaxTotal = bundle.getString("redis.pool.maxTotal");
if (StringUtils.isNotEmpty(strMaxTotal)) {
config.setMaxTotal(Integer.parseInt(strMaxTotal));
}
String strMaxIdle = bundle.getString("redis.pool.maxIdle");
if (StringUtils.isNotEmpty(strMaxIdle)) {
config.setMaxIdle(Integer.parseInt(strMaxIdle));
}
String strMaxWaitMillis = bundle.getString("redis.pool.maxWaitMillis");
if (StringUtils.isNotEmpty(strMaxWaitMillis)) {
config.setMaxWaitMillis(Long.parseLong(strMaxWaitMillis));
}
String strTestOnBorrow = bundle.getString("redis.pool.testOnBorrow");
if (StringUtils.isNotEmpty(strTestOnBorrow)) {
config.setTestOnBorrow(Boolean.valueOf(strTestOnBorrow));
}
String strTestOnReturn = bundle.getString("redis.pool.testOnReturn");
if (StringUtils.isNotEmpty(strTestOnReturn)) {
config.setTestOnReturn(Boolean.valueOf(strTestOnReturn));
}
}
}
StringBuffer redisinfo = new StringBuffer();
redisinfo.append("------redis.properties------").append(LINE_SEPARATOR);
redisinfo.append("redis.host: ").append(host).append(":").append(port).append(LINE_SEPARATOR);
redisinfo.append("redis.connectionTimeout: ").append(connectionTimeout).append(LINE_SEPARATOR);
redisinfo.append("redis.pool.maxTotal: ").append(config.getMaxTotal()).append(LINE_SEPARATOR);
redisinfo.append("redis.pool.maxIdle: ").append(config.getMaxIdle()).append(LINE_SEPARATOR);
redisinfo.append("redis.pool.maxWaitMillis: ").append(config.getMaxWaitMillis())
.append(LINE_SEPARATOR);
redisinfo.append("redis.pool.testOnBorrow: ").append(config.getTestOnBorrow())
.append(LINE_SEPARATOR);
redisinfo.append("redis.pool.testOnReturn: ").append(config.getTestOnReturn())
.append(LINE_SEPARATOR);
LOGGER.info(redisinfo.toString());
return new JedisPool(config, host, port, connectionTimeout);
}
/**
* From the connection pool to obtain jedis instance, use the default database index number 0
*
* @return
* @throws Exception
*/
public static Jedis borrowJedisInstance() throws Exception {
return borrowJedisInstance(DEFAULT_DB_INDEX);
}
/**
* From the connection pool to obtain jedis instance, using the specified database index number
*
* @return
* @throws Exception
*/
public static Jedis borrowJedisInstance(final int dbIndex) throws Exception {
if (jedisPool == null) {
synchronized (JedisUtil.class) {
if (jedisPool == null) {
jedisPool = initialPool();
}
}
}
Jedis resource = jedisPool.getResource();
if (resource == null) {
throw new Exception("fetch from jedis pool failed,null object!");
}
resource.select(dbIndex);
return resource;
}
/**
* returned to the pool jedis instance
*
* @param jedis
*/
public static void returnJedisInstance(final Jedis jedis) {
if (jedis != null) {
jedis.close();
}
}
}
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