OpenSearch/x-pack/docs/en/watcher/condition.asciidoc

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[[condition]]
== Conditions
When a watch is triggered, its condition determines whether or not to execute
the watch actions. {watcher} supports the following condition types:
* <<condition-always, `always`>>: set the watch condition to `true` so the watch
actions are always executed.
* <<condition-never, `never`>>: set the watch condition to `false` so the watch
actions are never executed.
* <<condition-compare, `compare`>>: perform simple comparisons against values
in the watch payload to determine whether or not to execute the watch actions.
* <<condition-array-compare, `array_compare`>>: compare an array of values in the
watch payload to a given value to determine whether or not to execute the watch
actions.
* <<condition-script, `script`>>: use a script to determine whether or not to
execute the watch actions.
NOTE: If you omit the condition definition from a watch, the condition defaults
to `always`.
When a condition is evaluated, it has full access to the watch execution context,
including the watch payload (`ctx.payload.*`). The <<condition-script, script>>,
<<condition-compare, compare>> and <<condition-array-compare, array_compare>>
conditions can use the payload data to determine whether or not the necessary
conditions are met.
In addition to the watch wide condition, you can also configure conditions
per <<action-conditions, action>>.
include::condition/always.asciidoc[]
include::condition/never.asciidoc[]
include::condition/compare.asciidoc[]
include::condition/array-compare.asciidoc[]
include::condition/script.asciidoc[]