Variables¶
Template variables can query Commands and use other variables as parameters.
Advanced variable format options
The formatting of the variable interpolation depends on the data source. There are some situations where you might want to change the default formatting.
Supported Parameters¶
Variables will be replaced in the following parameters:
| Parameter | Description | Command |
|---|---|---|
| Key | Key name | GET, XRANGE, etc. |
| Query | CLI query | Any |
| Field | Hash Field | HGET, HMGET |
| Filter | Filter | TS.MRANGE, TS.QUERYINDEX |
| Legend | Frame's name | TS.RANGE |
| Value | Serie's name | TS.RANGE |
How to use SUNION for multi-select variable?¶
LUA¶
The LUA script should work fine on a single shard deployment:
eval "return redis.call('sunion',${region:singlequote})" 0
Redis Gears¶
Another option is to utilize RedisGears module:
gb = GB('CommandReader')
gb.flatmap(lambda x: execute('SUNION', *x[1].split(",")))
gb.register(trigger='SUNION')
To execute the trigger in Grafana:
RG.TRIGGER SUNION ${region:csv}