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// 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/>.
*/
#include "mongo/pch.h"
#include "mongo/db/commands.h"
#include "mongo/db/cmdline.h"
#include "mongo/client/dbclient_rs.h"
#include "mongo/db/server_parameters.h"
namespace mongo {
namespace {
void appendParameterNames( stringstream& help ) {
help << "supported:\n";
const ServerParameter::Map& m = ServerParameterSet::getGlobal()->getMap();
for ( ServerParameter::Map::const_iterator i = m.begin(); i != m.end(); ++i ) {
help << " " << i->first << "\n";
}
}
}
class CmdGet : public Command {
public:
CmdGet() : Command( "getParameter" ) { }
virtual bool slaveOk() const { return true; }
virtual bool adminOnly() const { return true; }
virtual LockType locktype() const { return NONE; }
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) {
ActionSet actions;
actions.addAction(ActionType::getParameter);
out->push_back(Privilege(AuthorizationManager::SERVER_RESOURCE_NAME, actions));
}
virtual void help( stringstream &help ) const {
help << "get administrative option(s)\nexample:\n";
help << "{ getParameter:1, notablescan:1 }\n";
appendParameterNames( help );
help << "{ getParameter:'*' } to get everything\n";
}
bool run(const string& dbname, BSONObj& cmdObj, int, string& errmsg, BSONObjBuilder& result, bool fromRepl ) {
bool all = *cmdObj.firstElement().valuestrsafe() == '*';
int before = result.len();
const ServerParameter::Map& m = ServerParameterSet::getGlobal()->getMap();
for ( ServerParameter::Map::const_iterator i = m.begin(); i != m.end(); ++i ) {
if ( all || cmdObj.hasElement( i->first.c_str() ) ) {
i->second->append( result, i->second->name() );
}
}
if ( before == result.len() ) {
errmsg = "no option found to get";
return false;
}
return true;
}
} cmdGet;
class CmdSet : public Command {
public:
CmdSet() : Command( "setParameter" ) { }
virtual bool slaveOk() const { return true; }
virtual bool adminOnly() const { return true; }
virtual LockType locktype() const { return NONE; }
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) {
ActionSet actions;
actions.addAction(ActionType::setParameter);
out->push_back(Privilege(AuthorizationManager::SERVER_RESOURCE_NAME, actions));
}
virtual void help( stringstream &help ) const {
help << "set administrative option(s)\n";
help << "{ setParameter:1, <param>:<value> }\n";
appendParameterNames( help );
}
bool run(const string& dbname, BSONObj& cmdObj, int, string& errmsg, BSONObjBuilder& result, bool fromRepl ) {
int s = 0;
bool found = false;
// TODO: remove these manual things
if( cmdObj.hasElement("journalCommitInterval") ) {
if( !cmdLine.dur ) {
errmsg = "journaling is off";
return false;
}
int x = (int) cmdObj["journalCommitInterval"].Number();
verify( x > 1 && x < 500 );
cmdLine.journalCommitInterval = x;
log() << "setParameter journalCommitInterval=" << x << endl;
s++;
}
if( cmdObj.hasElement( "traceExceptions" ) ) {
if( s == 0 ) result.append( "was", DBException::traceExceptions );
DBException::traceExceptions = cmdObj["traceExceptions"].Bool();
s++;
}
if( cmdObj.hasElement( "replMonitorMaxFailedChecks" ) ) {
if( s == 0 ) result.append( "was", ReplicaSetMonitor::getMaxFailedChecks() );
ReplicaSetMonitor::setMaxFailedChecks(
cmdObj["replMonitorMaxFailedChecks"].numberInt() );
s++;
}
const ServerParameter::Map& m = ServerParameterSet::getGlobal()->getMap();
BSONObjIterator i( cmdObj );
i.next(); // skip past command name
while ( i.more() ) {
BSONElement e = i.next();
ServerParameter::Map::const_iterator j = m.find( e.fieldName() );
if ( j == m.end() )
continue;
if ( ! j->second->allowedToChangeAtRuntime() ) {
errmsg = str::stream()
<< "not allowed to change ["
<< e.fieldName()
<< "] at runtime";
return false;
}
if ( s == 0 )
j->second->append( result, "was" );
Status status = j->second->set( e );
if ( status.isOK() ) {
s++;
continue;
}
errmsg = status.reason();
result.append( "code", status.code() );
return false;
}
if( s == 0 && !found ) {
errmsg = "no option found to set, use help:true to see options ";
return false;
}
return true;
}
} cmdSet;
namespace {
ExportedServerParameter<int> LogLevelSetting( ServerParameterSet::getGlobal(),
"logLevel",
&logLevel );
ExportedServerParameter<bool> NoTableScanSetting( ServerParameterSet::getGlobal(),
"notablescan",
&cmdLine.noTableScan );
ExportedServerParameter<bool> QuietSetting( ServerParameterSet::getGlobal(),
"quiet",
&cmdLine.quiet );
ExportedServerParameter<double> SyncdelaySetting( ServerParameterSet::getGlobal(),
"syncdelay",
&cmdLine.syncdelay );
}
}
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