add map between severity and overdue minutes

[HNOONa-0]

I have added an unordered_map that can store a severity and it's corresponding overdue time to the LogCleaner object. The modifications should be backwards compatible. If this idea is correct, we can preform some optimizations, like keeping a cache of filepaths whose severities have been computed.

Fixes: #882

[sergiud]

Thanks for the PR and apologies for the late reply.

The changes are going into the right direction. Please add some unit tests. For this, you can extend the existing log cleaner tests.

[sergiud]

Fill the map only with the severity set by the user.

[HNOONa-0]

Hey @sergiud , I have made some improvements, I switched from a map to a vector for better lookup speed and cleaner implementation. I also addressed all the issues you pointed out. PTAL!

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 70.58824% with 10 lines in your changes missing coverage. Please review.

Project coverage is 61.95%. Comparing base (6c5c692) to head (314903e).
Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
src/logging.cc	70.58%	9 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1144      +/-   ##
==========================================
- Coverage   62.22%   61.95%   -0.27%     
==========================================
  Files          19       19              
  Lines        2324     2363      +39     
  Branches      845      856      +11     
==========================================
+ Hits         1446     1464      +18     
- Misses        596      616      +20     
- Partials      282      283       +1     

Files with missing lines	Coverage Δ
src/glog/logging.h	83.60% <ø> (ø)
src/logging.cc	68.63% <70.58%> (-0.58%)	⬇️

... and 1 file with indirect coverage changes

[HNOONa-0]

Hey @sergiud, I initially made the wrong assumptions, I thought log files must have severity in their names, but that’s not the case. I have added methods to enable, disable logging for both types of files (with and without severity in their names) and exported those functions. I also added a test file that checks for deferred cleanup logic, but I haven’t integrated it with CMake yet.