Redis input plugin
---

Status : core plugin, unit tested and maintained.

This plugin is used on log server to receive logs from redis channels. json_event format is expected.

They are two method to get message from redis :
* Publish / subscribe : The ``subscribe`` redis command will be used. Parameters ``channel`` and ``pattern_channel`` are needed.
* Queue. This ``blpop`` redis command will be used. ``key`` parameter is needed.

Example 1:
Config using url: ``input://redis://localhost:6379?channel=logstash_channel``

Config using logstash format:
````
input {
  redis {
    host => localhost
    port => 6379
    channel => logstash_channel
  }
}
````

Parameters:

* ``host``: ip of the redis server.
* ``port``: port of the redis server.
* ``auth_pass``: password to use when connecting to Redis
* ``type``: to specify the log type, to faciliate crawling in kibana. Example: ``type=redis``. No default value.
* ``method``: ``pubsub`` or ``queue`` Default value: ``queue``.
* ``channel``: Channel for publish / subscribe. No default value.
* ``pattern_channel``: use channel as pattern. Default value : false.
* ``key``: Queue name for queue. No default value.
* ``unserializer``: more doc at [unserializers](unserializers.md). Default value to ``json_logstash``.