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# Copyright (C) 2018-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.
#
# Replication Consistency Markers IDL File
global:
cpp_namespace: "mongo::repl"
imports:
- "mongo/db/basic_types.idl"
- "mongo/db/repl/replication_types.idl"
structs:
MinValidDocument:
description: A document in which the server stores its minValid and appliedThrough information.
fields:
ts:
cpp_name: minValidTimestamp
type: timestamp
description: "The timestamp for the OpTime at which the data on disk will be consistent"
t:
cpp_name: minValidTerm
type: safeInt64
description: "The term for the OpTime at which the data on disk will be consistent; -1 for PV0."
begin:
cpp_name: appliedThrough
type: optime
optional: true # This field is unset when we want to mark that we are consistent at the top of the oplog
description: "The OpTime of the last oplog entry we applied"
doingInitialSync:
cpp_name: initialSyncFlag
type: bool
optional: true # This field is unset when we are not doing initial sync
description: "A flag for if we are in the middle of initial sync"
_id:
type: objectid
optional: true # This is automatically created when the document is upserted
description: "An objectid that is not used but is automatically generated"
OplogTruncateAfterPointDocument:
description: A document in which the server stores information on where to truncate the oplog on unclean shutdown.
fields:
oplogTruncateAfterPoint:
type: timestamp
description: "The timestamp of an oplog entry after which the oplog may be inconsistent (have holes due to parallel writes)."
_id:
type: string
description: "Always set to 'oplogTruncateAfterPoint' to easily retrieve it."
InitialSyncIdDocument:
description: A document in which the server stores data related to the initial sync of the server.
fields:
_id:
type: uuid
description: "An arbitrary unique identifier associated with the initial sync of the server."
wallTime:
type: date
optional: true
description: "The walltime at which the initial sync document was written."
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