Class: StandardAudit::EventSubscriber

Inherits:
Object
  • Object
show all
Defined in:
lib/standard_audit/event_subscriber.rb

Overview

Subscriber for Rails 8.1+ structured event reporting (Rails.event).

Registered with Rails.event.subscribe(...) so that every Rails.event.notify call flows through StandardAudit for persistence. Events whose name does not match any configured subscribe_to pattern are ignored.

Payload is extracted with the same extractors used by the ActiveSupport::Notifications subscriber. Rails.event context supplies request_id/ip_address/user_agent/session_id and takes precedence over the Current.* resolvers. Tags and source_location are captured as metadata under the reserved keys _tags and _source.

Constant Summary collapse

RESERVED_PAYLOAD_KEYS = 
%i[actor target scope request_id ip_address user_agent session_id].freeze

Instance Method Summary collapse

Constructor Details

#initialize ⇒ EventSubscriber

Returns a new instance of EventSubscriber.



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# File 'lib/standard_audit/event_subscriber.rb', line 16

def initialize
  @pattern_cache = {}
  @pattern_cache_mutex = Mutex.new
end

Instance Method Details

#emit(event) ⇒ Object 



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# File 'lib/standard_audit/event_subscriber.rb', line 21

def emit(event)
  return unless StandardAudit.config.enabled

  name = event[:name]
  return if name.nil?
  return unless matches_subscription?(name)

  config  = StandardAudit.config
  payload = event[:payload] || {}
  context = event[:context] || {}

  actor  = config.actor_extractor.call(payload)
  target = config.target_extractor.call(payload)
  scope  = config.scope_extractor.call(payload)

  metadata = build_metadata(payload, event[:tags], event[:source_location], config)

  StandardAudit.record(
    name,
    actor: actor,
    target: target,
    scope: scope,
    metadata: metadata,
    request_id: context[:request_id] || payload[:request_id],
    ip_address: context[:ip_address] || payload[:ip_address],
    user_agent: context[:user_agent] || payload[:user_agent],
    session_id: context[:session_id] || payload[:session_id]
  )
rescue => e
  Rails.logger.error("[StandardAudit] Error handling Rails.event: #{e.class}: #{e.message}")
end