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# Copyright (C) 2015 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 Description
class Inspector
# Handles inspecting the result of an ismaster command to check if this
# a server is a member of a known topology.
#
# @since 2.4.0
class MemberDiscovered
include Event::Publisher
# Instantiate the member discovered inspection.
#
# @example Instantiate the inspection.
# MemberDiscovered.new(listeners)
#
# @param [ Event::Listeners ] event_listeners The event listeners.
#
# @since 2.4.0
def initialize(event_listeners)
@event_listeners = event_listeners
end
# Run the member discovered inspection.
#
# @example Run the inspection.
# MemberDiscovered.run(description, {})
#
# @param [ Description ] description The server description.
# @param [ Description ] updated The updated description.
#
# @since 2.4.0
def run(description, updated)
if (!description.primary? && updated.primary?) ||
(!description.mongos? && updated.mongos?) ||
(description.unknown? && !updated.unknown?)
publish(Event::MEMBER_DISCOVERED, description, updated)
end
end
end
end
end
end
end
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