From version 5.0 onward, Watcher is part of X-Pack. For more information, see
Alerting on cluster and index events.
Using Transforms
editUsing Transforms
editWatcher supports three types of transforms search,
script and chain. A search transform replaces the
existing payload with the results of a new search request. You can use script transforms to
modify the existing payload. A chain transform enables you to perform a series of search and
script transforms.