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
|
/**
* Copyright (C) 2018 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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kQuery
#include "mongo/platform/basic.h"
#include "mongo/db/pipeline/process_interface_shardsvr.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog/database_holder.h"
#include "mongo/db/catalog/document_validation.h"
#include "mongo/db/catalog/uuid_catalog.h"
#include "mongo/db/concurrency/d_concurrency.h"
#include "mongo/db/curop.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/ops/write_ops_exec.h"
#include "mongo/db/ops/write_ops_gen.h"
#include "mongo/db/s/collection_sharding_state.h"
#include "mongo/db/s/sharding_state.h"
#include "mongo/s/catalog_cache.h"
#include "mongo/s/grid.h"
#include "mongo/s/write_ops/cluster_write.h"
#include "mongo/util/log.h"
namespace mongo {
using boost::intrusive_ptr;
using std::shared_ptr;
using std::string;
using std::unique_ptr;
using write_ops::Insert;
using write_ops::Update;
using write_ops::UpdateOpEntry;
std::pair<std::vector<FieldPath>, bool> MongoInterfaceShardServer::collectDocumentKeyFields(
OperationContext* opCtx, NamespaceStringOrUUID nssOrUUID) const {
invariant(serverGlobalParams.clusterRole == ClusterRole::ShardServer);
boost::optional<UUID> uuid;
NamespaceString nss;
if (nssOrUUID.uuid()) {
uuid = *(nssOrUUID.uuid());
nss = UUIDCatalog::get(opCtx).lookupNSSByUUID(*uuid);
// An empty namespace indicates that the collection has been dropped. Treat it as unsharded
// and mark the fields as final.
if (nss.isEmpty()) {
return {{"_id"}, true};
}
} else if (nssOrUUID.nss()) {
nss = *(nssOrUUID.nss());
}
// Before taking a collection lock to retrieve the shard key fields, consult the catalog cache
// to determine whether the collection is sharded in the first place.
auto catalogCache = Grid::get(opCtx)->catalogCache();
const bool collectionIsSharded = catalogCache && [&]() {
auto routingInfo = catalogCache->getCollectionRoutingInfo(opCtx, nss);
return routingInfo.isOK() && routingInfo.getValue().cm();
}();
// Collection exists and is not sharded, mark as not final.
if (!collectionIsSharded) {
return {{"_id"}, false};
}
auto scm = [opCtx, &nss]() -> ScopedCollectionMetadata {
AutoGetCollection autoColl(opCtx, nss, MODE_IS);
return CollectionShardingState::get(opCtx, nss)->getMetadata(opCtx);
}();
// If the UUID is set in 'nssOrUuid', check that the UUID in the ScopedCollectionMetadata
// matches. Otherwise, this implies that the collection has been dropped and recreated as
// sharded.
if (!scm->isSharded() || (uuid && !scm->uuidMatches(*uuid))) {
return {{"_id"}, false};
}
// Unpack the shard key.
std::vector<FieldPath> result;
bool gotId = false;
for (auto& field : scm->getKeyPatternFields()) {
result.emplace_back(field->dottedField());
gotId |= (result.back().fullPath() == "_id");
}
if (!gotId) { // If not part of the shard key, "_id" comes last.
result.emplace_back("_id");
}
// Collection is now sharded so the document key fields will never change, mark as final.
return {result, true};
}
void MongoInterfaceShardServer::insert(const boost::intrusive_ptr<ExpressionContext>& expCtx,
const NamespaceString& ns,
std::vector<BSONObj>&& objs) {
BatchedCommandResponse response;
BatchWriteExecStats stats;
ClusterWriter::write(
expCtx->opCtx,
BatchedCommandRequest(buildInsertOp(ns, std::move(objs), expCtx->bypassDocumentValidation)),
&stats,
&response);
// TODO SERVER-35403: Add more context for which shard produced the error.
uassertStatusOKWithContext(response.toStatus(), "Insert failed: ");
}
void MongoInterfaceShardServer::update(const boost::intrusive_ptr<ExpressionContext>& expCtx,
const NamespaceString& ns,
std::vector<BSONObj>&& queries,
std::vector<BSONObj>&& updates,
bool upsert,
bool multi) {
BatchedCommandResponse response;
BatchWriteExecStats stats;
ClusterWriter::write(expCtx->opCtx,
BatchedCommandRequest(buildUpdateOp(ns,
std::move(queries),
std::move(updates),
upsert,
multi,
expCtx->bypassDocumentValidation)),
&stats,
&response);
// TODO SERVER-35403: Add more context for which shard produced the error.
uassertStatusOKWithContext(response.toStatus(), "Update failed: ");
}
} // namespace mongo
|
