class ActiveSupport::Notifications::Fanout

Experimental RBS support (using type sampling data from the type_fusion project). 

# sig/active_support/notifications/fanout.rbs

class ActiveSupport::Notifications::Fanout
  def listening?: (String name) -> false
end

This class is thread safe. All methods are reentrant.
It just pushes events to all registered log subscribers.
This is a default queue implementation that ships with Notifications.

def all_listeners_for(name) 

def all_listeners_for(name)
  # this is correctly done double-checked locking (Concurrent::Map's lookups have volatile semantics)
  @all_listeners_for[name] || synchronize do
    # use synchronisation when accessing @subscribers
    @all_listeners_for[name] ||=
      @string_subscribers[name] + @other_subscribers.select { |s| s.subscribed_to?(name) }
  end
end

def build_handle(name, id, payload) 

def build_handle(name, id, payload)
  Handle.new(self, name, id, payload)
end

def clear_cache(key = nil) # :nodoc:

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

def finish(name, id, payload, listeners = nil) 

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

def groups_for(name) # :nodoc:

:nodoc: 
def groups_for(name) # :nodoc:
  groups = @groups_for.compute_if_absent(name) do
    all_listeners_for(name).reject(&:silenceable).group_by(&:group_class).transform_values do |s|
      s.map(&:delegate)
    end
  end
  silenceable_groups = @silenceable_groups_for.compute_if_absent(name) do
    all_listeners_for(name).select(&:silenceable).group_by(&:group_class).transform_values do |s|
      s.map(&:delegate)
    end
  end
  unless silenceable_groups.empty?
    groups = groups.dup
    silenceable_groups.each do |group_class, subscriptions|
      active_subscriptions = subscriptions.reject { |s| s.silenced?(name) }
      unless active_subscriptions.empty?
        groups[group_class] = (groups[group_class] || []) + active_subscriptions
      end
    end
  end
  groups
end

def initialize 

def initialize
  @string_subscribers = Concurrent::Map.new { |h, k| h.compute_if_absent(k) { [] } }
  @other_subscribers = []
  @all_listeners_for = Concurrent::Map.new
  @groups_for = Concurrent::Map.new
  @silenceable_groups_for = Concurrent::Map.new
  super
end

def inspect # :nodoc:

:nodoc: 
def inspect # :nodoc:
  total_patterns = @string_subscribers.size + @other_subscribers.size
  "#<#{self.class} (#{total_patterns} patterns)>"
end

def listeners_for(name) 

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

def listening?(name)

Experimental RBS support (using type sampling data from the type_fusion project). 

def listening?: (String name) -> false

This signature was generated using 1 sample from 1 application. 

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

def publish(name, *args) 

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

def publish_event(event) 

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

def start(name, id, payload) 

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

def subscribe(pattern = nil, callable = nil, monotonic: false, &block) 

def subscribe(pattern = nil, callable = nil, monotonic: false, &block)
  subscriber = Subscribers.new(pattern, callable || block, monotonic)
  synchronize do
    case pattern
    when String
      @string_subscribers[pattern] << subscriber
      clear_cache(pattern)
    when NilClass, Regexp
      @other_subscribers << subscriber
      clear_cache
    else
      raise ArgumentError,  "pattern must be specified as a String, Regexp or empty"
    end
  end
  subscriber
end

def unsubscribe(subscriber_or_name) 

def unsubscribe(subscriber_or_name)
  synchronize do
    case subscriber_or_name
    when String
      @string_subscribers[subscriber_or_name].clear
      clear_cache(subscriber_or_name)
      @other_subscribers.each { |sub| sub.unsubscribe!(subscriber_or_name) }
    else
      pattern = subscriber_or_name.try(:pattern)
      if String === pattern
        @string_subscribers[pattern].delete(subscriber_or_name)
        clear_cache(pattern)
      else
        @other_subscribers.delete(subscriber_or_name)
        clear_cache
      end
    end
  end
end

def wait

This is a sync queue, so there is no waiting. 
def wait
end