Class: Events::Subscribers::Persister

Inherits:
Object
  • Object
show all
Includes:
Events::Subscriber
Defined in:
lib/events/subscribers/persister.rb

Overview

Persists all events to SQLite as they flow through the event bus. Each event is written as an Event record belonging to the active session.

Examples:

session = Session.create!
persister = Events::Subscribers::Persister.new(session)
Events::Bus.subscribe(persister)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(session) ⇒ Persister

Returns a new instance of Persister.



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# File 'lib/events/subscribers/persister.rb', line 17

def initialize(session)
  @session = session
  @mutex = Mutex.new
end

Instance Attribute Details

#session ⇒ Object

Returns the value of attribute session.



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# File 'lib/events/subscribers/persister.rb', line 15

def session
  @session
end

Instance Method Details

#emit(event) ⇒ Object

Receives a Rails.event notification hash and persists it.

Parameters:

  • event (Hash) —

    with :payload containing event data



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# File 'lib/events/subscribers/persister.rb', line 24

def emit(event)
  payload = event[:payload]
  return unless payload.is_a?(Hash)

  event_type = payload[:type]
  return if event_type.nil?

  @mutex.synchronize do
    @session.events.create!(
      event_type: event_type,
      payload: payload,
      tool_use_id: payload[:tool_use_id],
      timestamp: payload[:timestamp] || Process.clock_gettime(Process::CLOCK_REALTIME, :nanosecond)
    )
  end
end