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
|
/**
* 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/ttl_collection_cache.h"
#include <algorithm>
#include "mongo/db/service_context.h"
#include "mongo/logv2/log.h"
#include "mongo/util/fail_point.h"
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kStorage
namespace mongo {
MONGO_FAIL_POINT_DEFINE(hangTTLCollectionCacheAfterRegisteringInfo);
namespace {
const auto getTTLCollectionCache = ServiceContext::declareDecoration<TTLCollectionCache>();
}
TTLCollectionCache& TTLCollectionCache::get(ServiceContext* ctx) {
return getTTLCollectionCache(ctx);
}
void TTLCollectionCache::registerTTLInfo(UUID uuid, const Info& info) {
{
stdx::lock_guard<Latch> lock(_ttlInfosLock);
_ttlInfos[uuid].push_back(info);
}
if (MONGO_unlikely(hangTTLCollectionCacheAfterRegisteringInfo.shouldFail())) {
LOGV2(4664000, "Hanging due to hangTTLCollectionCacheAfterRegisteringInfo fail point");
hangTTLCollectionCacheAfterRegisteringInfo.pauseWhileSet();
}
}
void TTLCollectionCache::_deregisterTTLInfo(UUID uuid, const Info& info) {
stdx::lock_guard<Latch> lock(_ttlInfosLock);
auto infoIt = _ttlInfos.find(uuid);
fassert(5400705, infoIt != _ttlInfos.end());
auto& [_, infoVec] = *infoIt;
auto iter = infoVec.begin();
if (info.isClustered()) {
// For clustered collections, we cannot have more than one clustered info per UUID.
// All we have to do here is ensure that the 'info' to search for is also 'clustered'.
iter = std::find_if(infoVec.begin(), infoVec.end(), [](const auto& infoVecItem) {
return infoVecItem.isClustered();
});
} else {
// For TTL indexes, we search non-clustered TTL info items on the index name only.
auto indexName = info.getIndexName();
iter = std::find_if(infoVec.begin(), infoVec.end(), [&indexName](const auto& infoVecItem) {
if (infoVecItem.isClustered()) {
return false;
}
return indexName == infoVecItem.getIndexName();
});
}
fassert(40220, iter != infoVec.end());
infoVec.erase(iter);
if (infoVec.empty()) {
_ttlInfos.erase(infoIt);
}
}
void TTLCollectionCache::deregisterTTLIndexByName(UUID uuid, const IndexName& indexName) {
_deregisterTTLInfo(std::move(uuid), TTLCollectionCache::Info{indexName, /*unusedSpec=*/{}});
}
void TTLCollectionCache::deregisterTTLClusteredIndex(UUID uuid) {
_deregisterTTLInfo(std::move(uuid),
TTLCollectionCache::Info{TTLCollectionCache::ClusteredId{}});
}
void TTLCollectionCache::unsetTTLIndexExpireAfterSecondsInvalid(UUID uuid,
const IndexName& indexName) {
stdx::lock_guard<Latch> lock(_ttlInfosLock);
auto infoIt = _ttlInfos.find(uuid);
if (infoIt == _ttlInfos.end()) {
return;
}
auto&& infoVec = infoIt->second;
for (auto&& info : infoVec) {
if (!info.isClustered() && info.getIndexName() == indexName) {
info.unsetExpireAfterSecondsInvalid();
break;
}
}
}
TTLCollectionCache::InfoMap TTLCollectionCache::getTTLInfos() {
stdx::lock_guard<Latch> lock(_ttlInfosLock);
return _ttlInfos;
}
}; // namespace mongo
|
