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cc.protea.foundation.integrations.RedisUtil Maven / Gradle / Ivy
Integrate compatible versions of many external systems to create a REST/HTTP server foundation
package cc.protea.foundation.integrations;
import java.net.URI;
import java.net.URISyntaxException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.fasterxml.jackson.core.type.TypeReference;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import redis.clients.jedis.Pipeline;
import redis.clients.jedis.Protocol;
import redis.clients.jedis.Transaction;
import redis.clients.jedis.exceptions.JedisException;
public class RedisUtil {
static JedisPool pool;
static Logger log = LoggerFactory.getLogger(RedisUtil.class);
static {
RedisUtil.pool = RedisUtil.getPool();
}
private static JedisPool getPool() {
try {
JedisPoolConfig config = new JedisPoolConfig();
config.setMaxTotal(64);
config.setMinIdle(3);
URI redisUri = new URI(System.getenv("REDISCLOUD_URL"));
return new JedisPool(config, redisUri.getHost(), redisUri.getPort(), Protocol.DEFAULT_TIMEOUT, redisUri.getUserInfo().split(":",2)[1]);
} catch (URISyntaxException e) {
RedisUtil.log.error("Could not connect to Jedis", e);
return null;
}
}
// Basic commands
public static String set(final String key, final Object value) {
return RedisUtil.set(key, JsonUtil.toJson(value));
}
public static String set(final String key, final Object value, boolean compress) {
if (compress) {
return RedisUtil.execute(new WithJedis() { public String process(final Jedis jedis) {
return jedis.set(key.getBytes(), JsonUtil.toGZippedJson(value));
}});
}
return RedisUtil.set(key, JsonUtil.toJson(value));
}
public static String set(final String key, final String value) {
return RedisUtil.execute(new WithJedis() { public String process(final Jedis jedis) {
return jedis.set(key, value);
}});
}
public static void setex(final String key, final int expirationSeconds, final Object value) {
RedisUtil.setex(key, expirationSeconds, JsonUtil.toJson(value));
}
public static void setex(final String key, final int expirationSeconds, final String value) {
RedisUtil.execute(new WithJedis() { public Object process(final Jedis jedis) {
jedis.setex(key, expirationSeconds, value);
return null;
}});
}
public static void hset(final String key, String field, final Object value) {
RedisUtil.hset(key, field, JsonUtil.toJson(value));
}
public static void hset(final String key, final String field, final String value) {
RedisUtil.execute(new WithJedis() { public Object process(final Jedis jedis) {
jedis.hset(key, field, value);
return null;
}});
}
public static Long del(final String key) {
return RedisUtil.execute(new WithJedis() { public Long process(final Jedis jedis) {
return jedis.del(key);
}});
}
public static String get(final String key) {
return RedisUtil.execute(new WithJedis() { public String process(final Jedis jedis) {
return jedis.get(key);
}});
}
public static T get(final String key, final Class valueType) {
return RedisUtil.execute(new WithJedis() { public T process(final Jedis jedis) {
byte[] json = jedis.get(key.getBytes());
return JsonUtil.fromJson(json, valueType);
}});
}
public static T get(final String key, final TypeReference valueType) {
return RedisUtil.execute(new WithJedis() { public T process(final Jedis jedis) {
String json = jedis.get(key);
return JsonUtil.fromJson(json, valueType);
}});
}
public static String hget(final String key, final String field) {
return RedisUtil.execute(new WithJedis() { public String process(final Jedis jedis) {
return jedis.hget(key, field);
}});
}
public static T hget(final String key, final String field, final Class valueType) {
return RedisUtil.execute(new WithJedis() { public T process(final Jedis jedis) {
String json = jedis.hget(key, field);
return JsonUtil.fromJson(json, valueType);
}});
}
public static Map hgetAll(final String key) {
return RedisUtil.execute(new WithJedis>() { public Map process(final Jedis jedis) {
return jedis.hgetAll(key);
}});
}
public static Map hgetAll(final String key, final String field, final Class valueType) {
Map raw = hgetAll(key);
Map all = new HashMap<>();
for(Entry entry : raw.entrySet()) {
all.put(entry.getKey(), JsonUtil.fromJson(entry.getValue(), valueType));
}
//raw.forEach((k,v)-> all.put(k, JsonUtil.fromJson(v, valueType)));
return all;
}
// For more advanced work
public static interface WithJedis {
public T process(Jedis jedis);
}
public static interface WithPipeline {
public void process(Pipeline pipeline);
}
public static interface WithJedisNull {
public void process(Jedis jedis);
}
public static interface WithTransaction {
public void process(Transaction transaction);
}
public static List transaction(final WithTransaction cb) {
Jedis jedis = RedisUtil.pool.getResource();
boolean returned = false;
try {
Transaction t = jedis.multi();
cb.process(t);
return t.exec();
} catch (JedisException e) {
RedisUtil.pool.returnBrokenResource(jedis);
returned = true;
throw e;
} finally {
if (!returned) {
RedisUtil.pool.returnResource(jedis);
}
}
}
public static void redis(final WithJedisNull cb) {
RedisUtil.jedis(cb);
}
public static void jedis(final WithJedisNull cb) {
Jedis jedis = RedisUtil.pool.getResource();
boolean returned = false;
try {
cb.process(jedis);
} catch (JedisException e) {
RedisUtil.pool.returnBrokenResource(jedis);
returned = true;
throw e;
} finally {
if (!returned) {
RedisUtil.pool.returnResource(jedis);
}
}
}
public static void pipeline(final WithPipeline wp) {
Jedis jedis = RedisUtil.pool.getResource();
boolean doReturn = true;
try {
Pipeline p = jedis.pipelined();
wp.process(p);
p.sync();
} catch (JedisException e) {
RedisUtil.pool.returnBrokenResource(jedis);
doReturn = false;
throw e;
} finally {
if (doReturn) {
RedisUtil.pool.returnResource(jedis);
}
}
}
public static T execute(final WithJedis cb) {
Jedis jedis = RedisUtil.pool.getResource();
boolean doReturn = true;
try {
return cb.process(jedis);
} catch (JedisException e) {
RedisUtil.pool.returnBrokenResource(jedis);
doReturn = false;
throw e;
} finally {
if (doReturn) {
RedisUtil.pool.returnResource(jedis);
}
}
}
// Utilities
public static Integer getInteger(final Map map, final String key) {
if (map == null || ! map.containsKey(key)) {
return null;
}
String value = map.get(key);
return StringUtils.isNumeric(value) ? Integer.valueOf(value) : null;
}
static String dateFormat = "yyyy-MM-dd'T'HH:mm:ss'Z'";
public static String toDate(final Date in) {
return new SimpleDateFormat(RedisUtil.dateFormat).format(in);
}
public static Date toDate(final String in) {
if (in == null) {
return null;
}
try {
return new SimpleDateFormat(RedisUtil.dateFormat).parse(in);
} catch (ParseException e) {
return null;
}
}
public static List asList(final Set set) {
List list = new ArrayList();
if (set == null) {
return list;
}
list.addAll(set);
return list;
}
}
