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
|
/*
* Copyright (C) 2008 10gen 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/cluster_last_error_info.h"
#include <utility>
#include "mongo/db/commands/server_status_metric.h"
#include "mongo/db/lasterror.h"
#include "mongo/db/stats/timer_stats.h"
#include "mongo/s/client_info.h"
#include "mongo/util/log.h"
namespace mongo {
const ClientBasic::Decoration<ClusterLastErrorInfo> ClusterLastErrorInfo::get =
ClientBasic::declareDecoration<ClusterLastErrorInfo>();
void ClusterLastErrorInfo::addShardHost(const std::string& shardHost) {
_cur->shardHostsWritten.insert( shardHost );
}
void ClusterLastErrorInfo::addHostOpTime(ConnectionString connStr, HostOpTime stat) {
_cur->hostOpTimes[connStr] = stat;
}
void ClusterLastErrorInfo::addHostOpTimes( const HostOpTimeMap& hostOpTimes ) {
for ( HostOpTimeMap::const_iterator it = hostOpTimes.begin();
it != hostOpTimes.end(); ++it ) {
addHostOpTime(it->first, it->second);
}
}
void ClusterLastErrorInfo::newRequest() {
std::swap(_cur, _prev);
_cur->clear();
}
void ClusterLastErrorInfo::disableForCommand() {
RequestInfo* temp = _cur;
_cur = _prev;
_prev = temp;
}
static TimerStats gleWtimeStats;
static ServerStatusMetricField<TimerStats> displayGleLatency("getLastError.wtime",
&gleWtimeStats);
// Look for $gleStats in a command response, and fill in ClientInfo with the data,
// if found.
// This data will be used by subsequent GLE calls, to ensure we look for the correct
// write on the correct PRIMARY.
void saveGLEStats(const BSONObj& result, const std::string& hostString) {
if (!ClientInfo::exists()) {
return;
}
if (result[kGLEStatsFieldName].type() != Object) {
return;
}
std::string errmsg;
ConnectionString shardConn = ConnectionString::parse(hostString, errmsg);
BSONElement subobj = result[kGLEStatsFieldName];
OpTime lastOpTime = subobj[kGLEStatsLastOpTimeFieldName]._opTime();
OID electionId = subobj[kGLEStatsElectionIdFieldName].OID();
ClientInfo* clientInfo = ClientInfo::get();
LOG(4) << "saveGLEStats lastOpTime:" << lastOpTime
<< " electionId:" << electionId;
ClusterLastErrorInfo::get(clientInfo).addHostOpTime(
shardConn, HostOpTime(lastOpTime, electionId));
}
} // namespace mongo
|
