Class: OpenTrace::ErrorSubscriber

Inherits:
Object
  • Object
show all
Defined in:
lib/opentrace/error_subscriber.rb

Overview

Rails 7.0+ Error Reporter subscriber.

Captures ALL exceptions reported via Rails.error (including those rescued by rescue_from in controllers). This fills the gap where process_action.action_controller only includes exception data for unhandled exceptions — rescued exceptions show status 500 but no exception_class, backtrace, or error_fingerprint.

Registered automatically in the Railtie when Rails.error is available.

Constant Summary collapse

SEVERITY_MAP = 
{
  error: "ERROR",
  warning: "WARN",
  info: "INFO"
}.freeze

Instance Method Summary collapse

Instance Method Details

#report(error, handled:, severity:, context: {}, source: nil) ⇒ Object 



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# File 'lib/opentrace/error_subscriber.rb', line 20

def report(error, handled:, severity:, context: {}, source: nil)
  return unless OpenTrace.enabled?

  # Skip if already inside an OpenTrace logging call (re-entrance guard)
  return if Fiber[:opentrace_logging]

  level = SEVERITY_MAP[severity] || "ERROR"

  meta = {}
  meta[:exception_class] = error.class.name
  meta[:exception_message] = error.message&.slice(0, 500)
  meta[:handled] = handled
  meta[:error_source] = source if source

  if error.backtrace
    cleaned = clean_backtrace(error.backtrace)
    meta[:backtrace] = cleaned.first(15)
  end

  # Capture exception cause chain
  if error.cause
    meta[:exception_causes] = OpenTrace.send(:build_cause_chain, error.cause, depth: 0)
  end

  # Include request params from context if available
  if context[:params].is_a?(Hash)
    params = context[:params].except("controller", "action")
    meta[:params] = truncate_hash(params, 2048) unless params.empty?
  end

  # Include controller/action context
  meta[:controller] = context[:controller] if context[:controller]
  meta[:action] = context[:action] if context[:action]

  # Merge any additional context from the reporter
  context.each do |k, v|
    next if %i[params controller action].include?(k)
    meta[k] = v
  end

  OpenTrace.log(level, "#{error.class}: #{error.message&.slice(0, 200)}", meta)
rescue StandardError
  # Never raise to the host app
end