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Extend Exception Level Filter configuration to accept lambda applied to all exceptions #1125

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@malkovro malkovro commented Apr 4, 2023

Description of the change

Exception level filters configuration allows to specify level (directly or through a lambda) for explicit class names but we reach a limit when using inheritance or more generally want the level to be determined by a lambda for distinct exception classes without having to go through declaring each single classes in the configuration.

class UnmonitoredError < StandardError; end
class SpecificUnmonitoredError < UnmonitoredError; end

Rollbar.configure do |config|
  config.exception_level_filters.merge!('UnmonitoredError' => 'ignored')
end

Rollbar.error(SpecificUnmonitoredError.new("Boom"), :use_exception_level_filters => true)
# => Actually reported error 馃槩

With this change we could get this to work

class UnmonitoredError < StandardError; end
class SpecificUnmonitoredError < UnmonitoredError; end

Rollbar.configure do |config|
  config.exception_level_filter = lambda { |exception|
    'ignored' if exception.is_a? UnmonitoredError
  }
end

Rollbar.error(SpecificUnmonitoredError.new("Boom"), :use_exception_level_filters => true)
# => 'ignored'

This change is basic and just add another configuration, it could be interesting to have the exception_level_filter chainable similarly to how the current implementation uses the .merge! to add behaviour without resetting the entire configuration but this is probably for another iteration...

Type of change

  • Bug fix (non-breaking change that fixes an issue)
  • New feature (non-breaking change that adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to not work as expected)
  • Maintenance
  • New release

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  • Lint rules pass locally
  • The code changed/added as part of this pull request has been covered with tests
  • All tests related to the changed code pass in development

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  • This pull request has a descriptive title and information useful to a reviewer. There may be a screenshot or screencast attached
  • "Ready for review" label attached to the PR and reviewers assigned
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@malkovro malkovro changed the title Feature/extend filter configuration Extend Exception Level Filter configuration to accept lambda applied to all exceptions Apr 4, 2023
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