context_parse #

Description #

context_parse filter is used to extract fields from context variables and store them in the context。

Configuration Example #

A simple example is as follows:

flow:
  - name: context_parse
    filter:
      - context_parse:
          context: _ctx.request.path
          pattern: ^\/.*?\d{4}\.(?P<month>\d{2})\.(?P<day>\d{2}).*?
          group: "parsed_index"

In above flow, the context_parse can extract fields from request：/abd-2023.02.06-abc/_search，get two new fields: parsed_index.month and parsed_index.day。

Parameter Description #

Name	Type	Description
context	string	Context variable
pattern	string	The regular expression used to extract the field
skip_error	bool	Whether to ignore the error and returned directly, such like the context variable does not exist
group	string	Set the group name, which the extracted fields can be placed under a separate group