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# frozen_string_literal: true
# rubocop:todo all
# Copyright (C) 2019-2020 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 Server
class ConnectionPool
# A manager that maintains the invariant that the
# size of a connection pool is at least minPoolSize.
#
# @api private
class Populator
include BackgroundThread
# @param [ Server::ConnectionPool ] pool The connection pool.
# @param [ Hash ] options The options.
#
# @option options [ Logger ] :logger A custom logger to use.
def initialize(pool, options = {})
@pool = pool
@thread = nil
@options = options
end
attr_reader :options
def pre_stop
@pool.populate_semaphore.signal
end
private
def do_work
throw(:done) if @pool.closed?
begin
unless @pool.populate
@pool.populate_semaphore.wait
end
rescue Error::AuthError, Error => e
# Errors encountered when trying to add connections to
# pool; try again later
log_warn("Populator failed to connect a connection for #{@pool.address}: #{e.class}: #{e}.")
@pool.populate_semaphore.wait(5)
end
end
end
end
end
end
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