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https://issues.apache.org/jira/browse/MINIFICPP-2507?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17909578#comment-17909578
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Ferenc Gerlits commented on MINIFICPP-2507:
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{{tail-base-directory}} supports expression language, and wildcards and
expression language don't play well together. If we remove expression language
support, that may break existing flows.
Instead, I think what we should do is what NiFi does [1], which is to match the
{{File to Tail}} regex against the full subdirectory path in "Multiple files"
mode when {{tailfile-recursive-lookup}} is {{{}true{}}}. This may also break
existing flows, so we'll need to figure out some way to avoid that.
[1]
[https://nifi.apache.org/docs/nifi-docs/components/org.apache.nifi/nifi-standard-nar/2.1.0/org.apache.nifi.processors.standard.TailFile/index.html]
"... In case recursivity is set to true, the regular expression will be used to
match the path starting from the base directory ..."
> TailFile "tail-base-directory" property should support Wildcards
> ----------------------------------------------------------------
>
> Key: MINIFICPP-2507
> URL: https://issues.apache.org/jira/browse/MINIFICPP-2507
> Project: Apache NiFi MiNiFi C++
> Issue Type: Improvement
> Reporter: Shivani
> Priority: Major
>
> Currently, the _File to Tail_ property supports wildcards but is limited to a
> specific directory. Requesting an enhancement that allows specifying a regex
> pattern in the parent directory of the _tail-base-directory_ property.
> While it is possible to use multiple TailFile processors as a workaround to
> achieve this, it is often not feasible due to the potentially exhaustive and
> indeterministic list of files that need to be monitored.
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