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// server_parameters.cpp
/**
* Copyright (C) 2012 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/base/parse_number.h"
#include "mongo/client/replica_set_monitor.h"
#include "mongo/db/server_parameters.h"
namespace mongo {
using std::string;
using std::vector;
namespace {
ServerParameterSet* GLOBAL = NULL;
}
ServerParameter::ServerParameter(ServerParameterSet* sps,
const std::string& name,
bool allowedToChangeAtStartup,
bool allowedToChangeAtRuntime)
: _name(name),
_allowedToChangeAtStartup(allowedToChangeAtStartup),
_allowedToChangeAtRuntime(allowedToChangeAtRuntime) {
if (sps) {
sps->add(this);
}
}
ServerParameter::ServerParameter(ServerParameterSet* sps, const std::string& name)
: _name(name), _allowedToChangeAtStartup(true), _allowedToChangeAtRuntime(true) {
if (sps) {
sps->add(this);
}
}
ServerParameter::~ServerParameter() {}
ServerParameterSet* ServerParameterSet::getGlobal() {
if (!GLOBAL) {
GLOBAL = new ServerParameterSet();
}
return GLOBAL;
}
void ServerParameterSet::add(ServerParameter* sp) {
ServerParameter*& x = _map[sp->name()];
if (x)
abort();
x = sp;
}
template <typename T, ServerParameterType paramType>
Status ExportedServerParameter<T, paramType>::setFromString(const string& str) {
T value;
Status status = parseNumberFromString(str, &value);
if (!status.isOK())
return status;
return set(value);
}
#define EXPORTED_SERVER_PARAMETER(PARAM_TYPE) \
template <> \
Status ExportedServerParameter<bool, PARAM_TYPE>::setFromString(const string& str) { \
if (str == "true" || str == "1") \
return set(true); \
if (str == "false" || str == "0") \
return set(false); \
return Status(ErrorCodes::BadValue, "can't convert string to bool"); \
} \
\
template Status ExportedServerParameter<int, PARAM_TYPE>::setFromString(const string& str); \
\
template Status ExportedServerParameter<long long, PARAM_TYPE>::setFromString( \
const string& str); \
\
template Status ExportedServerParameter<double, PARAM_TYPE>::setFromString(const string& str);
// Define instances for each possible combination of number types we support, and
// ServerParameterType
EXPORTED_SERVER_PARAMETER(ServerParameterType::kStartupOnly);
EXPORTED_SERVER_PARAMETER(ServerParameterType::kRuntimeOnly);
EXPORTED_SERVER_PARAMETER(ServerParameterType::kStartupAndRuntime);
template <>
Status ExportedServerParameter<string, ServerParameterType::kStartupOnly>::setFromString(
const string& str) {
return set(str);
}
template <>
Status ExportedServerParameter<vector<string>, ServerParameterType::kStartupOnly>::setFromString(
const string& str) {
vector<string> v;
splitStringDelim(str, &v, ',');
return set(v);
}
} // namespace mongo
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