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
|
/**
* Copyright (C) 2016 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::kSharding
#include "mongo/platform/basic.h"
#include "mongo/db/s/chunk_move_write_concern_options.h"
#include "mongo/base/status_with.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/repl/replication_coordinator.h"
#include "mongo/db/service_context.h"
#include "mongo/s/request_types/migration_secondary_throttle_options.h"
#include "mongo/util/log.h"
namespace mongo {
namespace {
const Seconds kDefaultWriteTimeoutForMigration(60);
const WriteConcernOptions kDefaultWriteConcernForMigration(2,
WriteConcernOptions::SyncMode::NONE,
kDefaultWriteTimeoutForMigration);
const WriteConcernOptions kWriteConcernLocal(1,
WriteConcernOptions::SyncMode::NONE,
WriteConcernOptions::kNoTimeout);
WriteConcernOptions getDefaultWriteConcernForMigration(OperationContext* opCtx) {
repl::ReplicationCoordinator* replCoordinator = repl::ReplicationCoordinator::get(opCtx);
if (replCoordinator->getReplicationMode() == mongo::repl::ReplicationCoordinator::modeReplSet) {
Status status =
replCoordinator->checkIfWriteConcernCanBeSatisfied(kDefaultWriteConcernForMigration);
if (status.isOK()) {
return kDefaultWriteConcernForMigration;
}
}
return kWriteConcernLocal;
}
} // namespace
StatusWith<WriteConcernOptions> ChunkMoveWriteConcernOptions::getEffectiveWriteConcern(
OperationContext* opCtx, const MigrationSecondaryThrottleOptions& options) {
auto secondaryThrottle = options.getSecondaryThrottle();
if (secondaryThrottle == MigrationSecondaryThrottleOptions::kDefault) {
if (opCtx->getServiceContext()->getStorageEngine()->supportsDocLocking()) {
secondaryThrottle = MigrationSecondaryThrottleOptions::kOff;
} else {
secondaryThrottle = MigrationSecondaryThrottleOptions::kOn;
}
}
if (secondaryThrottle == MigrationSecondaryThrottleOptions::kOff) {
return kWriteConcernLocal;
}
WriteConcernOptions writeConcern;
if (options.isWriteConcernSpecified()) {
writeConcern = options.getWriteConcern();
repl::ReplicationCoordinator* replCoordinator = repl::ReplicationCoordinator::get(opCtx);
Status status = replCoordinator->checkIfWriteConcernCanBeSatisfied(writeConcern);
if (!status.isOK() && status != ErrorCodes::NoReplicationEnabled) {
return status;
}
} else {
writeConcern = getDefaultWriteConcernForMigration(opCtx);
}
if (writeConcern.shouldWaitForOtherNodes() &&
writeConcern.wTimeout == WriteConcernOptions::kNoTimeout) {
// Don't allow no timeout
writeConcern.wTimeout = durationCount<Milliseconds>(kDefaultWriteTimeoutForMigration);
}
return writeConcern;
}
} // namespace mongo
|
