1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
# 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.
require 'mongo/server/description/inspector/member_discovered'
# @deprecated. Will be removed in 3.0
require 'mongo/server/description/inspector/primary_elected'
require 'mongo/server/description/inspector/description_changed'
require 'mongo/server/description/inspector/standalone_discovered'
module Mongo
class Server
class Description
# Handles inspection of an updated server description to determine if
# events should be fired.
#
# @since 2.0.0
class Inspector
# Static list of inspections that are performed on the result of an
# ismaster command in order to generate the appropriate events for the
# changes.
#
# @since 2.0.0
INSPECTORS = [
Inspector::StandaloneDiscovered,
Inspector::DescriptionChanged,
Inspector::MemberDiscovered
].freeze
# @return [ Array ] inspectors The description inspectors.
attr_reader :inspectors
# Create the new inspector.
#
# @example Create the new inspector.
# Inspector.new(listeners)
#
# @param [ Event::Listeners ] listeners The event listeners.
#
# @since 2.0.0
def initialize(listeners)
@inspectors = INSPECTORS.map do |inspector|
inspector.new(listeners)
end
end
# Run the server description inspector.
#
# @example Run the inspector.
# inspector.run(description, { 'ismaster' => true })
#
# @param [ Description ] description The old description.
# @param [ Hash ] ismaster The updated ismaster.
# @param [ Float ] average_round_trip_time The moving average round trip time (sec).
#
# @return [ Description ] The new description.
#
# @since 2.0.0
def run(description, ismaster, average_round_trip_time)
new_description = Description.new(description.address, ismaster, average_round_trip_time)
inspectors.each do |inspector|
inspector.run(description, new_description)
end
new_description
end
end
end
end
end
|
