Class: ActiveSupport::Notifications::Fanout

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 365

def build_handle(name, id, payload)
  groups = groups_for(name).map do |group_klass, grouped_listeners|
    group_klass.new(grouped_listeners, name, id, payload)
  end

  if groups.empty?
    NullHandle
  else
    Handle.new(name, id, groups, payload)
  end
end

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 183

def clear_cache(key = nil) # :nodoc:
  if key
    @all_listeners_for.delete(key)
    @groups_for.delete(key)
  else
    @all_listeners_for.clear
    @groups_for.clear
  end
end

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 384

def finish(name, id, payload, listeners = nil)
  handle_stack = IsolatedExecutionState[:_fanout_handle_stack]
  handle = handle_stack.pop
  handle.finish_with_values(name, id, payload)
end

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 267

def group_listeners(listeners) # :nodoc:
  listeners.group_by(&:group_class).transform_values do |s|
    s.map(&:delegate).freeze
  end.freeze
end

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 273

def groups_for(name) # :nodoc:
  silenceable_groups, groups = @groups_for.compute_if_absent(name) do
    listeners = all_listeners_for(name)
    listeners.partition(&:silenceable).map { |l| group_listeners(l) }
  end

  unless silenceable_groups.empty?
    silenceable_groups.each do |group_class, subscriptions|
      active_subscriptions = subscriptions.reject { |s| s.silenced?(name) }
      unless active_subscriptions.empty?
        groups = groups.dup if groups.frozen?
        base_groups = groups[group_class]
        groups[group_class] = base_groups ? base_groups + active_subscriptions : active_subscriptions
      end
    end
  end

  groups
end

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 140

def inspect # :nodoc:
  "#<#{self.class} (#{@registry.size} patterns)>"
end

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 407

def listeners_for(name)
  all_listeners_for(name).reject { |s| s.silenced?(name) }
end

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 411

def listening?(name)
  all_listeners_for(name).any? { |s| !s.silenced?(name) }
end

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 133

def load_ractor_snapshot(registry) # :nodoc:
  @mutex.synchronize do
    @registry = registry
    clear_cache
  end
end

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 390

def publish(name, ...)
  iterate_guarding_exceptions(listeners_for(name)) { |s| s.publish(name, ...) }
end

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 394

def publish_event(event)
  iterate_guarding_exceptions(listeners_for(event.name)) { |s| s.publish_event(event) }
end

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 377

def start(name, id, payload)
  handle_stack = (IsolatedExecutionState[:_fanout_handle_stack] ||= [])
  handle = build_handle(name, id, payload)
  handle_stack << handle
  handle.start
end

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 144

def subscribe(pattern = nil, callable = nil, monotonic: false, prepend: false, &block)
  block = ActiveSupport::Ractors.try_shareable_proc(block) if block

  subscriber = Subscribers.new(pattern, callable || block, monotonic)
  @mutex.synchronize do
    case pattern
    when String
      @registry = @registry.add(subscriber, prepend: prepend)
      clear_cache(pattern)
    when NilClass, Regexp
      if prepend
        raise ArgumentError, "Cannot prepend Regex subscribers"
      end
      @registry = @registry.add(subscriber)
      clear_cache
    else
      raise ArgumentError,  "pattern must be specified as a String, Regexp or empty"
    end
  end
  subscriber
end

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 129

def to_ractor_snapshot # :nodoc:
  @registry
end

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 166

def unsubscribe(subscriber_or_name)
  @mutex.synchronize do
    case subscriber_or_name
    when String
      @registry = @registry.delete_pattern(subscriber_or_name)
      @registry.other_subscribers.each { |sub| sub.unsubscribe!(subscriber_or_name) }
      clear_cache(subscriber_or_name)
    else
      pattern = subscriber_or_name.try(:pattern)
      pattern = nil unless String === pattern

      @registry = @registry.delete(subscriber_or_name)
      clear_cache(pattern)
    end
  end
end

# File 'activesupport/lib/active_support/notifications/fanout.rb', line 416

def wait
end