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# Copyright (C) 2017 MongoDB Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License, version 3,
# as published by the Free Software Foundation.
#
# 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
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# 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 GNU Affero General 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.
# Oplog Entry IDL File
global:
cpp_namespace: "mongo::repl"
imports:
- "mongo/idl/basic_types.idl"
- "mongo/db/logical_session_id.idl"
enums:
OpType:
description: "The type of an operation in the oplog"
type: string
values:
kCommand: "c"
kInsert: "i"
kUpdate: "u"
kDelete: "d"
kNoop: "n"
structs:
OplogEntryBase:
description: A document in which the server stores an oplog entry.
chained_structs:
OperationSessionInfo : OperationSessionInfo
fields:
ts:
cpp_name: timestamp
type: timestamp
description: "The time when the oplog entry was created"
t:
cpp_name: term
type: long
optional: true # The term is optional for PV0 oplog entries.
description: "The term of the primary that created the oplog entry"
h:
cpp_name: hash
type: long
description: "The hash of the oplog entry"
v:
cpp_name: version
type: safeInt64
default: 1
description: "The version of the oplog"
op:
cpp_name: opType
type: OpType
description: "The operation type"
ns:
cpp_name: namespace
type: namespacestring
description: "The namespace on which to apply the operation"
ui:
cpp_name: uuid
type: uuid
optional: true
description: "The UUID of the collection"
fromMigrate:
type: bool
optional: true
description: "An operation caused by a chunk migration"
o:
cpp_name: object
type: object
description: "The operation applied"
o2:
cpp_name: object2
type: object
optional: true
description: "Additional information about the operation applied"
_id:
type: objectid
optional: true
description: "An optional _id field for tests that manually insert oplog entries"
wall:
cpp_name: wallClockTime
type: date
optional: true # Optional for older than 3.6 releases
description: "A wallclock time with MS resolution"
stmtId:
cpp_name: statementId
type: StmtId
optional: true # If txnNumber is missing, this will also be absent, otherwise it
# must exist.
description: "Identifier of the transaction statement which generated this oplog
entry"
prevTs:
cpp_name: prevWriteTsInTransaction
type: timestamp
optional: true # Only for writes that are part of a transaction
description: "The oplog timestamp of the previous write with the same transaction."
preImageTs:
type: timestamp
optional: true
description: "The oplog timestamp of another oplog entry that contains the document
before an update/remove was applied."
postImageTs:
type: timestamp
optional: true
description: "The oplog timestamp of another oplog entry that contains the document
after an update was applied."
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