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
|
/**
* 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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kCommand
#include "mongo/platform/basic.h"
#include "mongo/db/kill_sessions_local.h"
#include "mongo/db/client.h"
#include "mongo/db/cursor_manager.h"
#include "mongo/db/kill_sessions_common.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/service_context.h"
#include "mongo/db/session_catalog.h"
#include "mongo/db/session_killer.h"
#include "mongo/db/transaction_participant.h"
#include "mongo/util/log.h"
namespace mongo {
namespace {
void killSessionsAction(OperationContext* opCtx,
const SessionKiller::Matcher& matcher,
const SessionCatalog::ScanSessionsCallbackFn& killSessionFn) {
const auto catalog = SessionCatalog::get(opCtx);
catalog->scanSessions(opCtx, matcher, [&](OperationContext* opCtx, Session* session) {
// TODO (SERVER-33850): Rename KillAllSessionsByPattern and
// ScopedKillAllSessionsByPatternImpersonator to not refer to session kill
const KillAllSessionsByPattern* pattern = matcher.match(session->getSessionId());
invariant(pattern);
ScopedKillAllSessionsByPatternImpersonator impersonator(opCtx, *pattern);
killSessionFn(opCtx, session);
});
}
} // namespace
void killSessionsLocalKillTransactions(OperationContext* opCtx,
const SessionKiller::Matcher& matcher) {
killSessionsAction(opCtx, matcher, [](OperationContext* opCtx, Session* session) {
TransactionParticipant::getFromNonCheckedOutSession(session)->abortArbitraryTransaction();
});
}
SessionKiller::Result killSessionsLocal(OperationContext* opCtx,
const SessionKiller::Matcher& matcher,
SessionKiller::UniformRandomBitGenerator* urbg) {
killSessionsLocalKillTransactions(opCtx, matcher);
uassertStatusOK(killSessionsLocalKillOps(opCtx, matcher));
auto res = CursorManager::killCursorsWithMatchingSessions(opCtx, matcher);
uassertStatusOK(res.first);
return {std::vector<HostAndPort>{}};
}
void killAllExpiredTransactions(OperationContext* opCtx) {
SessionKiller::Matcher matcherAllSessions(
KillAllSessionsByPatternSet{makeKillAllSessionsByPattern(opCtx)});
killSessionsAction(opCtx, matcherAllSessions, [](OperationContext* opCtx, Session* session) {
try {
TransactionParticipant::getFromNonCheckedOutSession(session)
->abortArbitraryTransactionIfExpired();
} catch (const DBException& ex) {
Status status = ex.toStatus();
std::string errmsg = str::stream()
<< "May have failed to abort expired transaction with session id (lsid) '"
<< session->getSessionId() << "'."
<< " Caused by: " << status;
warning() << errmsg;
}
});
}
void killSessionsLocalShutdownAllTransactions(OperationContext* opCtx) {
SessionKiller::Matcher matcherAllSessions(
KillAllSessionsByPatternSet{makeKillAllSessionsByPattern(opCtx)});
killSessionsAction(opCtx, matcherAllSessions, [](OperationContext* opCtx, Session* session) {
TransactionParticipant::getFromNonCheckedOutSession(session)->shutdown();
});
}
void killSessionsLocalAbortOrYieldAllTransactions(
OperationContext* opCtx, std::vector<std::pair<Locker*, Locker::LockSnapshot>>* yieldedLocks) {
SessionKiller::Matcher matcherAllSessions(
KillAllSessionsByPatternSet{makeKillAllSessionsByPattern(opCtx)});
killSessionsAction(
opCtx, matcherAllSessions, [yieldedLocks](OperationContext* opCtx, Session* session) {
TransactionParticipant::getFromNonCheckedOutSession(session)
->abortOrYieldArbitraryTransaction(yieldedLocks);
});
}
} // namespace mongo
|
