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When a watch is triggered, its condition determines whether or not to execute the watch actions. Watcher supports the following condition types:
always: set the watch condition to
trueso the watch actions are always executed.
never: set the watch condition to
falseso the watch actions are never executed.
compare: perform simple comparisons against values in the watch payload to determine whether or not to execute the watch actions.
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.
script: use a script to determine wehther or not to execute the watch actions.
If you omit the condition definition from a watch, the condition defaults
When a condition is evaluated, it has full access to the watch execution context,
including the watch payload (
ctx.payload.*). The script,
compare and 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.