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
|
/**
* 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/s/sharding_uptime_reporter.h"
#include "mongo/db/client.h"
#include "mongo/db/server_options.h"
#include "mongo/s/balancer_configuration.h"
#include "mongo/s/catalog/sharding_catalog_client.h"
#include "mongo/s/catalog/type_mongos.h"
#include "mongo/s/grid.h"
#include "mongo/util/exit.h"
#include "mongo/util/log.h"
#include "mongo/util/mongoutils/str.h"
#include "mongo/util/net/sock.h"
#include "mongo/util/version.h"
namespace mongo {
namespace {
const Seconds kUptimeReportInterval(10);
std::string constructInstanceIdString() {
return str::stream() << getHostNameCached() << ":" << serverGlobalParams.port;
}
/**
* Reports the uptime status of the current instance to the config.pings collection. This method
* is best-effort and never throws.
*/
void reportStatus(OperationContext* opCtx,
const std::string& instanceId,
const Timer& upTimeTimer) {
MongosType mType;
mType.setName(instanceId);
mType.setPing(jsTime());
mType.setUptime(upTimeTimer.seconds());
// balancer is never active in mongos. Here for backwards compatibility only.
mType.setWaiting(true);
mType.setMongoVersion(VersionInfoInterface::instance().version().toString());
try {
Grid::get(opCtx)->catalogClient(opCtx)->updateConfigDocument(
opCtx,
MongosType::ConfigNS,
BSON(MongosType::name(instanceId)),
BSON("$set" << mType.toBSON()),
true,
ShardingCatalogClient::kMajorityWriteConcern);
} catch (const std::exception& e) {
log() << "Caught exception while reporting uptime: " << e.what();
}
}
} // namespace
ShardingUptimeReporter::ShardingUptimeReporter() = default;
ShardingUptimeReporter::~ShardingUptimeReporter() {
// The thread must not be running when this object is destroyed
invariant(!_thread.joinable());
}
void ShardingUptimeReporter::startPeriodicThread() {
invariant(!_thread.joinable());
_thread = stdx::thread([this] {
Client::initThread("Uptime reporter");
const std::string instanceId(constructInstanceIdString());
const Timer upTimeTimer;
while (!globalInShutdownDeprecated()) {
{
auto opCtx = cc().makeOperationContext();
reportStatus(opCtx.get(), instanceId, upTimeTimer);
auto status = Grid::get(opCtx.get())
->getBalancerConfiguration()
->refreshAndCheck(opCtx.get());
if (!status.isOK()) {
warning() << "failed to refresh mongos settings" << causedBy(status);
}
}
sleepFor(kUptimeReportInterval);
}
});
}
} // namespace mongo
|
