fix(fileimport-service): write valid messages from underlying parsers

[iainsproat]

Description & motivation

The file import service was not producing logs in clef format when wrapping the logs generated by underlying parsers.

This improves the handling of log messages to support CLEF.

Changes:

To-do before merge:

• ensure {message} (see red highlight in screenshot) is being properly interpolated.

Screenshots:

Validation of changes:

Checklist:

• My pull request follows the guidelines in the Contributing guide?
• My pull request does not duplicate any other open Pull Requests for the same update/change?
• My commits are related to the pull request and do not amend unrelated code or documentation.
• My code follows a similar style to existing code.
• I have added appropriate tests.
• I have updated or added relevant documentation.

References

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (1406465) 68.53% compared to head (44b5235) 68.53%.
Report is 2 commits behind head on main.

❗ Current head 44b5235 differs from pull request most recent head 1adc561. Consider uploading reports for the commit 1adc561 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1969   +/-   ##
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  Coverage   68.53%   68.53%           
=======================================
  Files         213      213           
  Lines        8107     8107           
  Branches      946      946           
=======================================
  Hits         5556     5556           
  Misses       2288     2288           
  Partials      263      263           

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