summaryrefslogtreecommitdiff
path: root/src/mongo/db/repl/replication_metrics.idl
blob: e214c2b0dc8762eaa2481a65e173f1f1d9140de9 (plain)
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
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
# Copyright (C) 2019-present MongoDB, Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the Server Side Public License, version 1,
# as published by MongoDB, Inc.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# Server Side Public License for more details.
#
# You should have received a copy of the Server Side Public License
# along with this program. If not, see
# <http://www.mongodb.com/licensing/server-side-public-license>.
#
# As a special exception, the copyright holders give permission to link the
# code of portions of this program with the OpenSSL library under certain
# conditions as described in each individual source file and distribute
# linked combinations including the program with the OpenSSL library. You
# must comply with the Server Side Public License in all respects for
# all of the code used other than as permitted herein. If you modify file(s)
# with this exception, you may extend this exception to your version of the
# file(s), but you are not obligated to do so. If you do not wish to do so,
# delete this exception statement from your version. If you delete this
# exception statement from all source files in the program, then also delete
# it in the license file.

# This IDL file describes the BSON format for ElectionMetrics,
# ElectionCandidateMetrics and ElectionParticipantMetrics, and
# handles the serialization to and deserialization from their BSON
# representations for those classes.

global:
    cpp_namespace: "mongo::repl"
    cpp_includes:
        - "mongo/db/repl/election_reason_counter_parser.h"
        - "mongo/db/repl/optime.h"

imports:
    - "mongo/idl/basic_types.idl"
    - "mongo/db/repl/replication_types.idl"

enums:
    StartElectionReason:
        description: "Reason why a node called for an election"
        type: string
        values:
            kElectionTimeout: "electionTimeout"
            kPriorityTakeover: "priorityTakeover"
            kStepUpRequest: "stepUpRequest"
            kStepUpRequestSkipDryRun: "stepUpRequestSkipDryRun"
            kCatchupTakeover: "catchupTakeover"
            kSingleNodePromptElection: "singleNodePromptElection"

types:
    ElectionReasonCounter:
        bson_serialization_type: any
        description: "Wrapper around ElectionReasonCounterBase that has increment methods"
        cpp_type: ElectionReasonCounter
        serializer: "::mongo::repl::serializeElectionReasonCounterToBSON"
        deserializer: "::mongo::repl::parseElectionReasonCounter"

structs:
    ElectionMetrics:
        description: "Stores metrics related to all the elections a node has called"
        strict: true
        fields:
            stepUpCmd:
                description: "Election reason counter for step up requests"
                type: ElectionReasonCounter
                non_const_getter: true
            priorityTakeover:
                description: "Election reason counter for priority takeovers"
                type: ElectionReasonCounter
                non_const_getter: true
            catchUpTakeover:
                description: "Election reason counter for catchup takeovers"
                type: ElectionReasonCounter
                non_const_getter: true
            electionTimeout:
                description: "Election reason counter for when the node didn't see a primary in the
                              past electionTimeoutPeriod milliseconds"
                type: ElectionReasonCounter
                non_const_getter: true
            freezeTimeout:
                description: "Election reason counter for single node replica set prompt elections"
                type: ElectionReasonCounter
                non_const_getter: true
            numStepDownsCausedByHigherTerm:
                description: "Number of times this node stepped down because it saw a higher term"
                type: long
                default: 0
            numCatchUps:
                description: "Number of elections that required the primary to catch up because it
                              was behind"
                type: long
                default: 0
            numCatchUpsSucceeded:
                description: "Number of times primary catchup concluded because the primary caught
                              up to the latest known optime successfully"
                type: long
                default: 0
            numCatchUpsAlreadyCaughtUp:
                description: "Number of times primary catchup concluded because the primary was
                              already caught up"
                type: long
                default: 0
            numCatchUpsSkipped:
                description: "Number of times primary catchup concluded because it was skipped"
                type: long
                default: 0
            numCatchUpsTimedOut:
                description: "Number of times primary catchup concluded because it timed out"
                type: long
                default: 0
            numCatchUpsFailedWithError:
                description: "Number of times primary catchup concluded because it failed with an
                              error"
                type: long
                default: 0
            numCatchUpsFailedWithNewTerm:
                description: "Number of times primary catchup concluded because the primary stepped
                              down on seeing a higher term"
                type: long
                default: 0
            numCatchUpsFailedWithReplSetAbortPrimaryCatchUpCmd:
                description: "Number of times primary catchup concluded because of the
                              replSetAbortPrimaryCatchUp command"
                type: long
                default: 0
            averageCatchUpOps:
                description: "Average number of ops applied during catchup"
                type: double
                default: 0.0

    ElectionCandidateMetrics:
        description: "Stores metrics that are specific to the last election in which the node was a
                      candidate"
        strict: true
        fields:
            lastElectionReason:
                description: "Reason why the node called for the election"
                type: StartElectionReason
            lastElectionDate:
                description: "Time the node called for the election"
                type: date
            termAtElection:
                description: "New term at the time of election"
                type: long
            lastCommittedOpTimeAtElection:
                description: "Last OpTime the node committed before calling the election"
                type: optime
            lastSeenOpTimeAtElection:
                description: "Last OpTime the node saw before calling the election"
                type: optime
            numVotesNeeded:
                description: "Number of votes the node needed to win the election"
                type: int
            priorityAtElection:
                description: "Priority of the node at the time of the election"
                type: double
            electionTimeoutMillis:
                description: "Timeout duration before a node initiates a new election"
                type: long
            priorPrimaryMemberId:
                description: "MemberId of the prior primary, according to the node. Not set if
                              there was no prior primary"
                type: int
                optional: true
            targetCatchupOpTime:
                description: "The node's target opTime for catchup"
                type: optime
                optional: true
            numCatchUpOps:
                description: "Number of ops applied during catchup when the primary successfully
                              catches up"
                type: long
                optional: true
            newTermStartDate:
                description: "Time the new term oplog entry was written"
                type: date
                optional: true
            wMajorityWriteAvailabilityDate:
                description: "Time w:majority write concern is satisfied for new term oplog entry"
                type: date
                optional: true

    ElectionParticipantMetrics:
        description: "Stores metrics that are specific to the last election in which the node voted"
        strict: true
        fields:
            priorityAtElection:
                description: "The node's priority at the time of the election"
                type: double