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module ActionCable
# If you need to disconnect a given connection, you can go through the
# RemoteConnections. You can find the connections you're looking for by
# searching for the identifier declared on the connection. For 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
#
# This will disconnect all the connections established for
# <tt>User.find(1)</tt>, across all servers running on all machines, because
# it uses the internal channel that all of 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 <tt>ActionCable.server.remote_connections.where(*)</tt>.
# Exists 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_channel, type: "disconnect"
end
# Returns all the identifiers that were applied to this connection.
redefine_method :identifiers do
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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