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|
module ActionCable
# If you need to disconnect a given connection, you go through the RemoteConnections. You find the connections you're looking for by
# searching the identifier declared on the connection. Example:
#
# module ApplicationCable
# class Connection < ActionCable::Connection::Base
# identified_by :current_user
# ....
# end
# end
#
# ActionCable.server.remote_connections.where(current_user: User.find(1)).disconnect
#
# That will disconnect all the connections established for User.find(1) across all servers running on all machines (because it uses
# the internal channel that all these servers are subscribed to).
class RemoteConnections
attr_reader :server
def initialize(server)
@server = server
end
def where(identifier)
RemoteConnection.new(server, identifier)
end
private
# Represents a single remote connection found via ActionCable.server.remote_connections.where(*).
# Exists for the solely for the purpose of calling #disconnect on that connection.
class RemoteConnection
class InvalidIdentifiersError < StandardError; end
include Connection::Identification, Connection::InternalChannel
def initialize(server, ids)
@server = server
set_identifier_instance_vars(ids)
end
# Uses the internal channel to disconnect the connection.
def disconnect
server.broadcast internal_redis_channel, type: 'disconnect'
end
# Returns all the identifiers that were applied to this connection.
def identifiers
server.connection_identifiers
end
private
attr_reader :server
def set_identifier_instance_vars(ids)
raise InvalidIdentifiersError unless valid_identifiers?(ids)
ids.each { |k,v| instance_variable_set("@#{k}", v) }
end
def valid_identifiers?(ids)
keys = ids.keys
identifiers.all? { |id| keys.include?(id) }
end
end
end
end
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