Elasticsearch get distributed lock

gistfile1.txt

private boolean getLock(String aliasName)
{
	synchronized (aliasName)
	{
		IndexRequestBuilder indexRequest = elasticClient.prepareIndex(LOCK_DIRECTORY, LOCK_TYPE, aliasName).setSource("{}").setOpType(OpType.CREATE);
		boolean successful = false;
		
		try
		{
			IndexResponse response = indexRequest.get();
			successful = response.isCreated();
		}
		catch(Exception e)
		{
			// This means we couldn't get the lock.
			e.printStackTrace();
		}
		
		return successful;
	}
}