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
|
/**
* Copyright (C) 2015 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/catalog/drop_collection.h"
#include "mongo/db/background.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog/database.h"
#include "mongo/db/catalog/index_catalog.h"
#include "mongo/db/client.h"
#include "mongo/db/concurrency/write_conflict_exception.h"
#include "mongo/db/curop.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/index_builder.h"
#include "mongo/db/operation_context_impl.h"
#include "mongo/db/repl/replication_coordinator_global.h"
#include "mongo/db/server_options.h"
#include "mongo/db/service_context.h"
#include "mongo/util/log.h"
namespace mongo {
Status dropCollection(OperationContext* txn,
const NamespaceString& collectionName,
BSONObjBuilder& result) {
if (!serverGlobalParams.quiet) {
log() << "CMD: drop " << collectionName;
}
std::string dbname = collectionName.db().toString();
MONGO_WRITE_CONFLICT_RETRY_LOOP_BEGIN {
ScopedTransaction transaction(txn, MODE_IX);
AutoGetDb autoDb(txn, dbname, MODE_X);
Database* const db = autoDb.getDb();
Collection* coll = db ? db->getCollection(collectionName) : nullptr;
// If db/collection does not exist, short circuit and return.
if (!db || !coll) {
return Status(ErrorCodes::NamespaceNotFound, "ns not found");
}
OldClientContext context(txn, collectionName);
bool userInitiatedWritesAndNotPrimary = txn->writesAreReplicated() &&
!repl::getGlobalReplicationCoordinator()->canAcceptWritesFor(collectionName);
if (userInitiatedWritesAndNotPrimary) {
return Status(ErrorCodes::NotMaster,
str::stream() << "Not primary while dropping collection "
<< collectionName.ns());
}
int numIndexes = coll->getIndexCatalog()->numIndexesTotal(txn);
BackgroundOperation::assertNoBgOpInProgForNs(collectionName.ns());
WriteUnitOfWork wunit(txn);
Status s = db->dropCollection(txn, collectionName.ns());
result.append("ns", collectionName);
if (!s.isOK()) {
return s;
}
result.append("nIndexesWas", numIndexes);
wunit.commit();
}
MONGO_WRITE_CONFLICT_RETRY_LOOP_END(txn, "drop", collectionName.ns());
return Status::OK();
}
} // namespace mongo
|
