[jira] [Updated] (NIFI-9850) Add support for Multiple Expressions to GrokReader

["David Handermann (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NIFI-9850?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Handermann updated NIFI-9850:
-----------------------------------
    Fix Version/s: 1.17.0
       Resolution: Fixed
           Status: Resolved  (was: Patch Available)

> Add support for Multiple Expressions to GrokReader
> --------------------------------------------------
>
>                 Key: NIFI-9850
>                 URL: https://issues.apache.org/jira/browse/NIFI-9850
>             Project: Apache NiFi
>          Issue Type: New Feature
>          Components: Extensions
>            Reporter: David Handermann
>            Assignee: David Handermann
>            Priority: Minor
>             Fix For: 1.17.0
>
>          Time Spent: 1h 20m
>  Remaining Estimate: 0h
>
> The {{GrokReader}} service includes a single property named {{{}Grok Expression{}}}, which the Reader uses to parse input lines. This approach requires the configured {{Grok Expression}} to handle all possible formats for input lines.
> The {{GrokReader}} should be enhanced to support multiple expressions that the Reader can use when attempting to parse input lines. The Reader should follow the configured order of multiple expressions.
> Support for multiple expressions could be configured using the property value itself, or through a file that could be referenced from an external location.
> The implementation should maintain compatibility with the current {{{}GrokReader{}}}.



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