Exemplo n.º 1
0
    bool checkConfigOrInit( const string& configdb , bool authoritative , string& errmsg , BSONObjBuilder& result , bool locked=false ) const {
        if ( configdb.size() == 0 ) {
            errmsg = "no configdb";
            return false;
        }

        if ( shardingState.enabled() ) {
            if ( configdb == shardingState.getConfigServer() )
                return true;

            result.append( "configdb" , BSON( "stored" << shardingState.getConfigServer() <<
                                              "given" << configdb ) );

            errmsg = str::stream() << "mongos specified a different config database string : "
                     << "stored : " << shardingState.getConfigServer()
                     << " vs given : " << configdb;
            return false;
        }

        if ( ! authoritative ) {
            result.appendBool( "need_authoritative" , true );
            errmsg = "first setShardVersion";
            return false;
        }

        if ( locked ) {
            ShardedConnectionInfo::addHook();
            shardingState.enable( configdb );
            configServer.init( configdb );
            return true;
        }

        Lock::GlobalWrite lk;
        return checkConfigOrInit( configdb , authoritative , errmsg , result , true );
    }
Exemplo n.º 2
0
        bool checkConfigOrInit( const string& configdb , bool authoritative , string& errmsg , BSONObjBuilder& result , bool locked=false ) const {
            if ( configdb.size() == 0 ) {
                errmsg = "no configdb";
                return false;
            }
            
            if ( shardingState.enabled() ) {
                if ( configdb == shardingState.getConfigServer() ) 
                    return true;
                
                result.append( "configdb" , BSON( "stored" << shardingState.getConfigServer() << 
                                                  "given" << configdb ) );
                errmsg = "specified a different configdb!";
                return false;
            }
            
            if ( ! authoritative ) {
                result.appendBool( "need_authoritative" , true );
                errmsg = "first setShardVersion";
                return false;
            }
            
            if ( locked ) {
                shardingState.enable( configdb );
                configServer.init( configdb );
                return true;
            }

            dblock lk;
            return checkConfigOrInit( configdb , authoritative , errmsg , result , true );
        }
Exemplo n.º 3
0
        bool run(const string& , BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool) {

            lastError.disableForCommand();
            ShardedConnectionInfo* info = ShardedConnectionInfo::get( true );

            bool authoritative = cmdObj.getBoolField( "authoritative" );

            string configdb = cmdObj["configdb"].valuestrsafe();
            {
                // configdb checking
                if ( configdb.size() == 0 ) {
                    errmsg = "no configdb";
                    return false;
                }

                if ( shardingState.enabled() ) {
                    if ( configdb != shardingState.getConfigServer() ) {
                        errmsg = "specified a different configdb!";
                        return false;
                    }
                }
                else {
                    if ( ! authoritative ) {
                        result.appendBool( "need_authoritative" , true );
                        errmsg = "first setShardVersion";
                        return false;
                    }
                    shardingState.enable( configdb );
                    configServer.init( configdb );
                }
            }

            if ( cmdObj["shard"].type() == String ) {
                shardingState.gotShardName( cmdObj["shard"].String() );
                shardingState.gotShardHost( cmdObj["shardHost"].String() );
            }

            {
                // setting up ids
                if ( cmdObj["serverID"].type() != jstOID ) {
                    // TODO: fix this
                    //errmsg = "need serverID to be an OID";
                    //return 0;
                }
                else {
                    OID clientId = cmdObj["serverID"].__oid();
                    if ( ! info->hasID() ) {
                        info->setID( clientId );
                    }
                    else if ( clientId != info->getID() ) {
                        errmsg = "server id has changed!";
                        return 0;
                    }
                }
            }

            unsigned long long version = extractVersion( cmdObj["version"] , errmsg );

            if ( errmsg.size() ) {
                return false;
            }

            string ns = cmdObj["setShardVersion"].valuestrsafe();
            if ( ns.size() == 0 ) {
                errmsg = "need to speciy fully namespace";
                return false;
            }

            const ConfigVersion oldVersion = info->getVersion(ns);
            const ConfigVersion globalVersion = shardingState.getVersion(ns);

            if ( oldVersion > 0 && globalVersion == 0 ) {
                // this had been reset
                info->setVersion( ns , 0 );
            }

            if ( version == 0 && globalVersion == 0 ) {
                // this connection is cleaning itself
                info->setVersion( ns , 0 );
                return true;
            }

            if ( version == 0 && globalVersion > 0 ) {
                if ( ! authoritative ) {
                    result.appendBool( "need_authoritative" , true );
                    result.append( "ns" , ns );
                    result.appendTimestamp( "globalVersion" , globalVersion );
                    result.appendTimestamp( "oldVersion" , oldVersion );
                    errmsg = "dropping needs to be authoritative";
                    return false;
                }
                log() << "wiping data for: " << ns << endl;
                result.appendTimestamp( "beforeDrop" , globalVersion );
                // only setting global version on purpose
                // need clients to re-find meta-data
                shardingState.resetVersion( ns );
                info->setVersion( ns , 0 );
                return true;
            }

            if ( version < oldVersion ) {
                errmsg = "you already have a newer version of collection '" + ns + "'";
                result.append( "ns" , ns );
                result.appendTimestamp( "oldVersion" , oldVersion );
                result.appendTimestamp( "newVersion" , version );
                result.appendTimestamp( "globalVersion" , globalVersion );
                return false;
            }

            if ( version < globalVersion ) {
                while ( shardingState.inCriticalMigrateSection() ) {
                    dbtemprelease r;
                    sleepmillis(2);
                    OCCASIONALLY log() << "waiting till out of critical section" << endl;
                }
                errmsg = "going to older version for global for collection '" + ns + "'";
                result.append( "ns" , ns );
                result.appendTimestamp( "version" , version );
                result.appendTimestamp( "globalVersion" , globalVersion );
                return false;
            }

            if ( globalVersion == 0 && ! cmdObj.getBoolField( "authoritative" ) ) {
                // need authoritative for first look
                result.append( "ns" , ns );
                result.appendBool( "need_authoritative" , true );
                errmsg = "first time for collection '" + ns + "'";
                return false;
            }

            {
                dbtemprelease unlock;

                ShardChunkVersion currVersion = version;
                if ( ! shardingState.trySetVersion( ns , currVersion ) ) {
                    errmsg = str::stream() << "client version differs from config's for colleciton '" << ns << "'";
                    result.append( "ns" , ns );
                    result.appendTimestamp( "version" , version );
                    result.appendTimestamp( "globalVersion" , currVersion );
                    return false;
                }
            }

            info->setVersion( ns , version );
            result.appendTimestamp( "oldVersion" , oldVersion );
            result.append( "ok" , 1 );

            return true;
        }
Exemplo n.º 4
0
        bool run(const string& , BSONObj& cmdObj, string& errmsg, BSONObjBuilder& result, bool){

            // Debugging code for SERVER-1633. Commands have already a coarser timer for
            // normal operation.
            Timer timer;
            vector<int> laps;

            lastError.disableForCommand();
            ShardedConnectionInfo* info = ShardedConnectionInfo::get( true );

            bool authoritative = cmdObj.getBoolField( "authoritative" );

            string configdb = cmdObj["configdb"].valuestrsafe();
            { // configdb checking
                if ( configdb.size() == 0 ){
                    errmsg = "no configdb";
                    return false;
                }
                
                if ( shardingState.enabled() ){
                    if ( configdb != shardingState.getConfigServer() ){
                        errmsg = "specified a different configdb!";
                        return false;
                    }
                }
                else {
                    if ( ! authoritative ){
                        result.appendBool( "need_authoritative" , true );
                        errmsg = "first setShardVersion";
                        return false;
                    }
                    shardingState.enable( configdb );
                    configServer.init( configdb );
                }
            }

            // SERVER-1633
            laps.push_back( timer.millis() );
            
            if ( cmdObj["shard"].type() == String ){
                shardingState.gotShardName( cmdObj["shard"].String() );
                shardingState.gotShardHost( cmdObj["shardHost"].String() );
            }

            { // setting up ids
                if ( cmdObj["serverID"].type() != jstOID ){
                    // TODO: fix this
                    //errmsg = "need serverID to be an OID";
                    //return 0;
                }
                else {
                    OID clientId = cmdObj["serverID"].__oid();
                    if ( ! info->hasID() ){
                        info->setID( clientId );
                    }
                    else if ( clientId != info->getID() ){
                        errmsg = "server id has changed!";
                        return 0;
                    }
                }
            }

            // SERVER-1633
            laps.push_back( timer.millis() );
            
            unsigned long long version = extractVersion( cmdObj["version"] , errmsg );

            if ( errmsg.size() ){
                return false;
            }
            
            string ns = cmdObj["setShardVersion"].valuestrsafe();
            if ( ns.size() == 0 ){
                errmsg = "need to speciy fully namespace";
                return false;
            }
            
            ConfigVersion& oldVersion = info->getVersion(ns);
            ConfigVersion& globalVersion = shardingState.getVersion(ns);
            
            if ( oldVersion > 0 && globalVersion == 0 ){
                // this had been reset
                oldVersion = 0;
            }

            if ( version == 0 && globalVersion == 0 ){
                // this connection is cleaning itself
                oldVersion = 0;
                return 1;
            }

            // SERVER-1633
            laps.push_back( timer.millis() );

            if ( version == 0 && globalVersion > 0 ){
                if ( ! authoritative ){
                    result.appendBool( "need_authoritative" , true );
                    result.appendTimestamp( "globalVersion" , globalVersion );
                    result.appendTimestamp( "oldVersion" , oldVersion );
                    errmsg = "dropping needs to be authoritative";
                    return 0;
                }
                log() << "wiping data for: " << ns << endl;
                result.appendTimestamp( "beforeDrop" , globalVersion );
                // only setting global version on purpose
                // need clients to re-find meta-data
                globalVersion = 0;
                oldVersion = 0;
                return 1;
            }

            if ( version < oldVersion ){
                errmsg = "you already have a newer version";
                result.appendTimestamp( "oldVersion" , oldVersion );
                result.appendTimestamp( "newVersion" , version );
                result.appendTimestamp( "globalVersion" , globalVersion );
                return false;
            }
            
            // SERVER-1633
            laps.push_back( timer.millis() );

            if ( version < globalVersion ){
                while ( shardingState.inCriticalMigrateSection() ){
                    dbtemprelease r;
                    sleepmillis(2);
                    log() << "waiting till out of critical section" << endl;
                }
                errmsg = "going to older version for global";
                result.appendTimestamp( "version" , version );
                result.appendTimestamp( "globalVersion" , globalVersion );
                return false;
            }
            
            if ( globalVersion == 0 && ! cmdObj.getBoolField( "authoritative" ) ){
                // need authoritative for first look
                result.appendBool( "need_authoritative" , true );
                result.append( "ns" , ns );
                errmsg = "first time for this ns";
                return false;
            }

            // SERVER-1633
            laps.push_back( timer.millis() );

            {
                dbtemprelease unlock;
                shardingState.getChunkMatcher( ns );
            }

            result.appendTimestamp( "oldVersion" , oldVersion );
            oldVersion = version;
            globalVersion = version;

            // SERVER-1633
            ostringstream lapString;
            lapString << name /* command name */ << " partials: " ;
            for (size_t i = 1; i<laps.size(); ++i){ 
                lapString << (laps[i] - laps[i-1]) / 1000 << " ";
            }
            lapString << endl;
            logIfSlow( timer, lapString.str() );

            result.append( "ok" , 1 );
            return 1;
        }