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
|
# Copyright (C) 2018 MongoDB Inc.
#
# This program is free software: you can redistribute it and/or modify
# 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.
#
# Document source change stream stage IDL file
global:
cpp_namespace: "mongo"
cpp_includes:
- "mongo/db/pipeline/resume_token.h"
imports:
- "mongo/idl/basic_types.idl"
types:
# A resume token is an opaque document we return to the user that contains all the information
# needed to resume a stream where they left off. It also provides the ordering of streams
# from multiple shards.
resumeToken:
bson_serialization_type: object
description: An object representing a resume token for a change stream
cpp_type: ResumeToken
# The IDL requires a serializer for any custom type. The serializer for this type actually
# needs to know which format to use though, so requires an argument which is not currently
# supported by the IDL. We don't expect anyone to use the IDL to serialize the type, so we
# just provide a dummy serializer here.
serializer: ResumeToken::toBSON_do_not_use
deserializer: ResumeToken::parse
# The document key element in a resume token can be any BSON element, so we need a custom type
# which leaves it as a BSONElement
resumeTokenDocumentKey:
bson_serialization_type: any
description: The document id contained within a resume token
cpp_type: Value
serializer: Value::serializeForIDL
deserializer: Value::deserializeForIDL
structs:
ResumeTokenClusterTime:
description: The IDL type of cluster time
fields:
ts:
cpp_name: timestamp
type: timestamp
description: The timestamp of the logical time
DocumentSourceChangeStreamSpec:
description: A document used to specify the $changeStream stage of an aggregation
pipeline.
fields:
resumeAfter:
cpp_name: resumeAfter
type: resumeToken
optional: true
description: An object representing the point at which we should resume reporting
changes from.
startAfter:
cpp_name: startAfter
type: resumeToken
optional: true
description: An object representing the point at which we should start reporting
changes from. This is allowed to be a token from an invalidating command.
startAtOperationTime:
cpp_name: startAtOperationTime
type: timestamp
optional: true
description: The operation time after which we should start reporting changes.
Only one of resumeAfter, _resumeAfterClusterTimeDeprecated, and
startAtOperationTime should be specified.
fullDocument:
cpp_name: fullDocument
type: string
default: '"default"'
description: A string '"updateLookup"' or '"default"', indicating whether or not we
should return a full document or just changes for an update.
allChangesForCluster:
cpp_name: allChangesForCluster
type: bool
default: false
description: A flag indicating whether the stream should report all changes that occur
on the deployment, aside from those on internal databases or collections.
|
