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Loki: Add support for ad-hoc filtering in dashboard (#36393)

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* Add support for ad-hoc filtering in dashboards

* Add tests

* Add documentation

* Update docs/sources/variables/variable-types/add-ad-hoc-filters.md

Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com>

* Remove unused import

* Refactor and simplify

Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com>
This commit is contained in:
Ivana Huckova
2021-07-06 10:30:27 +02:00
committed by GitHub
co-authored by achatterjee-grafana
parent 666656c925
commit b77f6d59bd
4 changed files with 102 additions and 7 deletions
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docs/sources/datasources/loki.md
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@@ -154,6 +154,9 @@ provides the following functions you can use in the `Query` input field.
| `label_values(label)` | Returns a list of label values for the `label`. |
| `label_values(log stream selector, label)` | Returns a list of label values for the `label` in the specified `log stream selector`.|
### Ad hoc filters variable
Loki supports the special ad hoc filters variable type. It allows you to specify any number of label/value filters on the fly. These filters are automatically applied to all your Loki queries.
### Using interval and range variables
You can use some global built-in variables in query variables; `$__interval`, `$__interval_ms`, `$__range`, `$__range_s` and `$__range_ms`. For more information, refer to [Global built-in variables]({{< relref "../variables/variable-types/global-variables.md" >}}).