[7.x] ECS support for Grok processor (#76885)#77319
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danhermann merged 1 commit intoelastic:7.xfrom Sep 7, 2021
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Adds ECS support to the Grok processor by bringing over the Logstash Grok filter's ECS patterns. These are available in the ES Grok ingest processor through a new
ecs_compatibilityflag which, like the flag on the Logstash Grok filter, accepts only values ofdisabledorv1and defaults to the former. Whendisabled, the original patterns which are now designated "legacy" patterns are still used.The API to retrieve the Grok processor's patterns was also updated to accept a parameter specifying whether a listing of legacy or ECS patterns is desired.
Potential follow-up tasks include investigation of ECS support in Grok usage for Painless, ML, and runtime fields. For now, all of those use cases have been hard-coded to use legacy Grok patterns.
Fixes #66528
Backport of #76885