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/**
* 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/client/replica_set_monitor.h"
#include <algorithm>
#include <limits>
#include <random>
#include "mongo/bson/simple_bsonelement_comparator.h"
#include "mongo/client/connpool.h"
#include "mongo/client/global_conn_pool.h"
#include "mongo/client/read_preference.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/repl/bson_extract_optime.h"
#include "mongo/db/server_options.h"
#include "mongo/platform/atomic_word.h"
#include "mongo/platform/mutex.h"
#include "mongo/stdx/condition_variable.h"
#include "mongo/util/background.h"
#include "mongo/util/debug_util.h"
#include "mongo/util/exit.h"
#include "mongo/util/fail_point.h"
#include "mongo/util/string_map.h"
#include "mongo/util/timer.h"
namespace mongo {
using std::numeric_limits;
using std::set;
using std::shared_ptr;
using std::string;
using std::vector;
// Failpoint for changing the default refresh period
MONGO_FAIL_POINT_DEFINE(modifyReplicaSetMonitorDefaultRefreshPeriod);
// Defaults to random selection as required by the spec
bool ReplicaSetMonitor::useDeterministicHostSelection = false;
shared_ptr<ReplicaSetMonitor> ReplicaSetMonitor::createIfNeeded(const string& name,
const set<HostAndPort>& servers) {
return ReplicaSetMonitorManager::get()->getOrCreateMonitor(
ConnectionString::forReplicaSet(name, vector<HostAndPort>(servers.begin(), servers.end())));
}
shared_ptr<ReplicaSetMonitor> ReplicaSetMonitor::createIfNeeded(const MongoURI& uri) {
return ReplicaSetMonitorManager::get()->getOrCreateMonitor(uri);
}
shared_ptr<ReplicaSetMonitor> ReplicaSetMonitor::get(const std::string& name) {
return ReplicaSetMonitorManager::get()->getMonitor(name);
}
void ReplicaSetMonitor::remove(const string& name) {
ReplicaSetMonitorManager::get()->removeMonitor(name);
// Kill all pooled ReplicaSetConnections for this set. They will not function correctly
// after we kill the ReplicaSetMonitor.
globalConnPool.removeHost(name);
}
ReplicaSetChangeNotifier& ReplicaSetMonitor::getNotifier() {
return ReplicaSetMonitorManager::get()->getNotifier();
}
void ReplicaSetMonitor::shutdown() {
ReplicaSetMonitorManager::get()->shutdown();
}
void ReplicaSetMonitor::cleanup() {
ReplicaSetMonitorManager::get()->removeAllMonitors();
}
namespace {
AtomicWord<bool> refreshRetriesDisabledForTest{false};
} // namespace
void ReplicaSetMonitor::disableRefreshRetries_forTest() {
refreshRetriesDisabledForTest.store(true);
}
bool ReplicaSetMonitor::areRefreshRetriesDisabledForTest() {
return refreshRetriesDisabledForTest.load();
}
} // namespace mongo
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