@Override
protected void lockEntry(
PersistentEntity persistentEntity, String entityFamily, Serializable id, int timeout) {
String redisKey = getRedisKey(entityFamily, id);
final TimeUnit milliUnit = TimeUnit.MILLISECONDS;
final long waitTime = TimeUnit.SECONDS.toMillis(timeout);
final String lockName = lockName(redisKey);
int sleepTime = 0;
while (true) {
if (redisTemplate.setnx(lockName, System.currentTimeMillis())
&& redisTemplate.expire(lockName, timeout)) {
break;
} else {
if (redisTemplate.ttl(lockName) > 0) {
try {
if (sleepTime > waitTime) {
throw new CannotAcquireLockException(
"Failed to acquire lock on key [" + redisKey + "]. Wait time exceeded timeout.");
} else {
// wait for previous lock to expire
sleepTime += 500;
milliUnit.sleep(500);
}
} catch (InterruptedException e) {
throw new CannotAcquireLockException(
"Failed to acquire lock on key [" + redisKey + "]: " + e.getMessage(), e);
}
} else {
if (redisTemplate.getset(lockName, System.currentTimeMillis()) != null
&& redisTemplate.expire(lockName, timeout)) break;
}
}
}
}
