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# frozen_string_literal: true
# rubocop:todo all
# Copyright (C) 2014-2020 MongoDB Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
module Mongo
class Cluster
# A manager that calls #execute on its executors at a regular interval.
#
# @api private
#
# @since 2.5.0
class PeriodicExecutor
include BackgroundThread
# The default time interval for the periodic executor to execute.
#
# @since 2.5.0
FREQUENCY = 5
# Create a periodic executor.
#
# @example Create a PeriodicExecutor.
# Mongo::Cluster::PeriodicExecutor.new([reaper, reaper2])
#
# @param [ Array<Object> ] executors The executors. Each must respond
# to #execute and #flush.
# @param [ Hash ] options The options.
#
# @option options [ Logger ] :logger A custom logger to use.
#
# @api private
def initialize(executors, options = {})
@thread = nil
@executors = executors
@stop_semaphore = Semaphore.new
@options = options
end
attr_reader :options
alias :restart! :run!
def do_work
execute
@stop_semaphore.wait(FREQUENCY)
end
def pre_stop
@stop_semaphore.signal
end
def stop(final = false)
super
begin
flush
rescue
end
true
end
# Trigger an execute call on each reaper.
#
# @example Trigger all reapers.
# periodic_executor.execute
#
# @api private
#
# @since 2.5.0
def execute
@executors.each(&:execute)
true
end
# Execute all pending operations.
#
# @example Execute all pending operations.
# periodic_executor.flush
#
# @api private
#
# @since 2.5.0
def flush
@executors.each(&:flush)
true
end
end
end
end
|
