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
|
//@file update.cpp
/**
* Copyright (C) 2008-2014 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::kWrite
#include "mongo/platform/basic.h"
#include "mongo/db/ops/update.h"
#include "mongo/client/dbclientinterface.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog/database.h"
#include "mongo/db/catalog/database_holder.h"
#include "mongo/db/client.h"
#include "mongo/db/clientcursor.h"
#include "mongo/db/concurrency/d_concurrency.h"
#include "mongo/db/concurrency/write_conflict_exception.h"
#include "mongo/db/exec/update.h"
#include "mongo/db/op_observer.h"
#include "mongo/db/ops/update_driver.h"
#include "mongo/db/ops/update_lifecycle.h"
#include "mongo/db/query/explain.h"
#include "mongo/db/query/get_executor.h"
#include "mongo/db/query/plan_summary_stats.h"
#include "mongo/db/repl/repl_client_info.h"
#include "mongo/db/repl/replication_coordinator_global.h"
#include "mongo/db/update_index_data.h"
#include "mongo/util/log.h"
#include "mongo/util/scopeguard.h"
namespace mongo {
UpdateResult update(OperationContext* txn, Database* db, const UpdateRequest& request) {
invariant(db);
// Explain should never use this helper.
invariant(!request.isExplain());
auto client = txn->getClient();
auto lastOpAtOperationStart = repl::ReplClientInfo::forClient(client).getLastOp();
ScopeGuard lastOpSetterGuard = MakeObjGuard(repl::ReplClientInfo::forClient(client),
&repl::ReplClientInfo::setLastOpToSystemLastOpTime,
txn);
const NamespaceString& nsString = request.getNamespaceString();
Collection* collection = db->getCollection(nsString.ns());
// If this is the local database, don't set last op.
if (db->name() == "local") {
lastOpSetterGuard.Dismiss();
}
// The update stage does not create its own collection. As such, if the update is
// an upsert, create the collection that the update stage inserts into beforehand.
if (!collection && request.isUpsert()) {
// We have to have an exclusive lock on the db to be allowed to create the collection.
// Callers should either get an X or create the collection.
const Locker* locker = txn->lockState();
invariant(locker->isW() ||
locker->isLockHeldForMode(ResourceId(RESOURCE_DATABASE, nsString.db()), MODE_X));
MONGO_WRITE_CONFLICT_RETRY_LOOP_BEGIN {
ScopedTransaction transaction(txn, MODE_IX);
Lock::DBLock lk(txn->lockState(), nsString.db(), MODE_X);
const bool userInitiatedWritesAndNotPrimary = txn->writesAreReplicated() &&
!repl::getGlobalReplicationCoordinator()->canAcceptWritesFor(nsString);
if (userInitiatedWritesAndNotPrimary) {
uassertStatusOK(Status(ErrorCodes::NotMaster,
str::stream() << "Not primary while creating collection "
<< nsString.ns()
<< " during upsert"));
}
WriteUnitOfWork wuow(txn);
collection = db->createCollection(txn, nsString.ns(), CollectionOptions());
invariant(collection);
wuow.commit();
}
MONGO_WRITE_CONFLICT_RETRY_LOOP_END(txn, "createCollection", nsString.ns());
}
// Parse the update, get an executor for it, run the executor, get stats out.
ParsedUpdate parsedUpdate(txn, &request);
uassertStatusOK(parsedUpdate.parseRequest());
OpDebug* const nullOpDebug = nullptr;
std::unique_ptr<PlanExecutor> exec =
uassertStatusOK(getExecutorUpdate(txn, nullOpDebug, collection, &parsedUpdate));
uassertStatusOK(exec->executePlan());
if (repl::ReplClientInfo::forClient(client).getLastOp() != lastOpAtOperationStart) {
// If this operation has already generated a new lastOp, don't bother setting it here.
// No-op updates will not generate a new lastOp, so we still need the guard to fire in that
// case.
lastOpSetterGuard.Dismiss();
}
const UpdateStats* updateStats = UpdateStage::getUpdateStats(exec.get());
return UpdateStage::makeUpdateResult(updateStats);
}
BSONObj applyUpdateOperators(const BSONObj& from, const BSONObj& operators) {
UpdateDriver::Options opts;
UpdateDriver driver(opts);
Status status = driver.parse(operators);
if (!status.isOK()) {
uasserted(16838, status.reason());
}
mutablebson::Document doc(from, mutablebson::Document::kInPlaceDisabled);
status = driver.update(StringData(), &doc);
if (!status.isOK()) {
uasserted(16839, status.reason());
}
return doc.getObject();
}
} // namespace mongo
|
