Class: Chronicle::ErrorLogs::GroupResolver

Inherits:
Object
  • Object
show all
Defined in:
app/services/chronicle/error_logs/group_resolver.rb

Overview

Resolves the ErrorGroup for a new ErrorLog.

Responsibilities:

- Derive the fingerprint (use the caller-supplied one, or compute from
  the log's structural identity if none was given).
- Find an existing group for that fingerprint and increment its
  occurrence tracking.
- Create a brand-new group when none exists yet.
- Handle the concurrent-insert race condition transparently.

Instance Method Summary collapse

Constructor Details

#initialize(error_log) ⇒ GroupResolver

Returns a new instance of GroupResolver.



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# File 'app/services/chronicle/error_logs/group_resolver.rb', line 13

def initialize(error_log)
  @error_log = error_log
end

Instance Method Details

#call ⇒ Object 



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# File 'app/services/chronicle/error_logs/group_resolver.rb', line 17

def call
  existing = ErrorGroup.find_by(project: error_log.project, fingerprint: fingerprint)
  return bump_occurrence(existing) if existing

  create_group
rescue ActiveRecord::RecordNotUnique
  # A concurrent request won the INSERT race. Find the winner and record
  # this occurrence against it so the count stays accurate.
  bump_occurrence(ErrorGroup.find_by!(project: error_log.project, fingerprint: fingerprint))
end