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# Copyright (C) 2017 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 Collection
class View
class ChangeStream < Aggregation
# Behavior around resuming a change stream.
#
# @since 2.5.0
module Retryable
private
RETRY_MESSAGES = [
'not master',
'(43)' # cursor not found error code
].freeze
def read_with_one_retry
yield
rescue => e
if retryable?(e)
yield
else
raise(e)
end
end
def retryable?(error)
network_error?(error) || retryable_operation_failure?(error)
end
def network_error?(error)
[ Error::SocketError, Error::SocketTimeoutError].include?(error.class)
end
def retryable_operation_failure?(error)
error.is_a?(Error::OperationFailure) && RETRY_MESSAGES.any? { |m| error.message.include?(m) }
end
end
end
end
end
end
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