Exemple #1
0
void Strategy::doQuery( Request& r , const Shard& shard ) {

    r.checkAuth( Auth::READ );

    ShardConnection dbcon( shard , r.getns() );
    DBClientBase &c = dbcon.conn();

    string actualServer;

    Message response;
    bool ok = c.call( r.m(), response, true , &actualServer );
    uassert( 10200 , "mongos: error calling db", ok );

    {
        QueryResult *qr = (QueryResult *) response.singleData();
        if ( qr->resultFlags() & ResultFlag_ShardConfigStale ) {
            dbcon.done();
            // Version is zero b/c this is deprecated codepath
            throw RecvStaleConfigException( r.getns() , "Strategy::doQuery", ShardChunkVersion( 0 ), ShardChunkVersion( 0 ) );
        }
    }

    r.reply( response , actualServer.size() ? actualServer : c.getServerAddress() );
    dbcon.done();
}
Exemple #2
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    void Strategy::doQuery( Request& r , const Shard& shard ){
        try{
            ShardConnection dbcon( shard , r.getns() );
            DBClientBase &c = dbcon.conn();
            
            Message response;
            bool ok = c.call( r.m(), response);

            {
                QueryResult *qr = (QueryResult *) response.singleData();
                if ( qr->resultFlags() & ResultFlag_ShardConfigStale ){
                    dbcon.done();
                    throw StaleConfigException( r.getns() , "Strategy::doQuery" );
                }
            }

            uassert( 10200 , "mongos: error calling db", ok);
            r.reply( response , c.getServerAddress() );
            dbcon.done();
        }
        catch ( AssertionException& e ) {
            BSONObjBuilder err;
            e.getInfo().append( err );
            BSONObj errObj = err.done();
            replyToQuery(ResultFlag_ErrSet, r.p() , r.m() , errObj);
        }
    }
Exemple #3
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/**
 * Returns true if request is a query for sharded indexes.
 */
static bool doShardedIndexQuery(OperationContext* txn, Request& r, const QuerySpec& qSpec) {
    // Extract the ns field from the query, which may be embedded within the "query" or
    // "$query" field.
    auto nsField = qSpec.filter()["ns"];
    if (nsField.eoo()) {
        return false;
    }
    const NamespaceString indexNSSQuery(nsField.str());

    auto status = grid.catalogCache()->getDatabase(txn, indexNSSQuery.db().toString());
    if (!status.isOK()) {
        return false;
    }

    shared_ptr<DBConfig> config = status.getValue();
    if (!config->isSharded(indexNSSQuery.ns())) {
        return false;
    }

    // if you are querying on system.indexes, we need to make sure we go to a shard
    // that actually has chunks. This is not a perfect solution (what if you just
    // look at all indexes), but better than doing nothing.

    ShardPtr shard;
    ChunkManagerPtr cm;
    config->getChunkManagerOrPrimary(indexNSSQuery.ns(), cm, shard);
    if (cm) {
        set<ShardId> shardIds;
        cm->getAllShardIds(&shardIds);
        verify(shardIds.size() > 0);
        shard = grid.shardRegistry()->getShard(*shardIds.begin());
    }

    ShardConnection dbcon(shard->getConnString(), r.getns());
    DBClientBase& c = dbcon.conn();

    string actualServer;

    Message response;
    bool ok = c.call(r.m(), response, true, &actualServer);
    uassert(10200, "mongos: error calling db", ok);

    {
        QueryResult::View qr = response.singleData().view2ptr();
        if (qr.getResultFlags() & ResultFlag_ShardConfigStale) {
            dbcon.done();
            // Version is zero b/c this is deprecated codepath
            throw RecvStaleConfigException(r.getns(),
                                           "Strategy::doQuery",
                                           ChunkVersion(0, 0, OID()),
                                           ChunkVersion(0, 0, OID()));
        }
    }

    r.reply(response, actualServer.size() ? actualServer : c.getServerAddress());
    dbcon.done();

    return true;
}
Exemple #4
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 void Strategy::insert( const Shard& shard , const char * ns , const BSONObj& obj ) {
     ShardConnection dbcon( shard , ns );
     if ( dbcon.setVersion() ) {
         dbcon.done();
         throw StaleConfigException( ns , "for insert" );
     }
     dbcon->insert( ns , obj );
     dbcon.done();
 }
Exemple #5
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    void Strategy::doWrite( int op , Request& r , const Shard& shard ){
        ShardConnection dbcon( shard , r.getns() );
        DBClientBase &_c = dbcon.conn();

        /* TODO FIX - do not case and call DBClientBase::say() */
        DBClientConnection&c = dynamic_cast<DBClientConnection&>(_c);
        c.port().say( r.m() );
        
        dbcon.done();
    }
Exemple #6
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 void Strategy::insert( const Shard& shard , const char * ns , const BSONObj& obj , int flags, bool safe ) {
     ShardConnection dbcon( shard , ns );
     if ( dbcon.setVersion() ) {
         dbcon.done();
         throw StaleConfigException( ns , "for insert" );
     }
     dbcon->insert( ns , obj , flags);
     if (safe)
         dbcon->getLastError();
     dbcon.done();
 }
Exemple #7
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void Strategy::insert( const Shard& shard , const char * ns , const vector<BSONObj>& v , int flags, bool safe ) {
    ShardConnection dbcon( shard , ns );
    if ( dbcon.setVersion() ) {
        dbcon.done();
        // Version is zero b/c we don't yet have a way to get the local version conflict
        throw RecvStaleConfigException( ns , "for insert", ShardChunkVersion( 0 ), ShardChunkVersion( 0 ) );
    }
    dbcon->insert( ns , v , flags);
    if (safe)
        dbcon->getLastError();
    dbcon.done();
}
Exemple #8
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    void Strategy::update( const Shard& shard , const char * ns , const BSONObj& query , const BSONObj& toupdate , int flags ) {
        bool upsert = flags & UpdateOption_Upsert;
        bool multi = flags & UpdateOption_Multi;

        ShardConnection dbcon( shard , ns );
        if ( dbcon.setVersion() ) {
            dbcon.done();
            throw StaleConfigException( ns , "for insert" );
        }
        dbcon->update( ns , query , toupdate, upsert, multi);
        dbcon.done();
    }
Exemple #9
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    /**
     * Returns true if request is a query for sharded indexes.
     */
    static bool doShardedIndexQuery( Request& r, const QuerySpec& qSpec ) {

        // Extract the ns field from the query, which may be embedded within the "query" or
        // "$query" field.
        string indexNSQuery(qSpec.filter()["ns"].str());
        DBConfigPtr config = grid.getDBConfig( r.getns() );

        if ( !config->isSharded( indexNSQuery )) {
            return false;
        }

        // if you are querying on system.indexes, we need to make sure we go to a shard
        // that actually has chunks. This is not a perfect solution (what if you just
        // look at all indexes), but better than doing nothing.

        ShardPtr shard;
        ChunkManagerPtr cm;
        config->getChunkManagerOrPrimary( indexNSQuery, cm, shard );
        if ( cm ) {
            set<Shard> shards;
            cm->getAllShards( shards );
            verify( shards.size() > 0 );
            shard.reset( new Shard( *shards.begin() ) );
        }

        ShardConnection dbcon( *shard , r.getns() );
        DBClientBase &c = dbcon.conn();

        string actualServer;

        Message response;
        bool ok = c.call( r.m(), response, true , &actualServer );
        uassert( 10200 , "mongos: error calling db", ok );

        {
            QueryResult *qr = (QueryResult *) response.singleData();
            if ( qr->resultFlags() & ResultFlag_ShardConfigStale ) {
                dbcon.done();
                // Version is zero b/c this is deprecated codepath
                throw RecvStaleConfigException( r.getns(),
                                                "Strategy::doQuery",
                                                ChunkVersion( 0, 0, OID() ),
                                                ChunkVersion( 0, 0, OID() ));
            }
        }

        r.reply( response , actualServer.size() ? actualServer : c.getServerAddress() );
        dbcon.done();

        return true;
    }
Exemple #10
0
void Strategy::update( const Shard& shard , const char * ns , const BSONObj& query , const BSONObj& toupdate , int flags, bool safe ) {
    bool upsert = flags & UpdateOption_Upsert;
    bool multi = flags & UpdateOption_Multi;

    ShardConnection dbcon( shard , ns );
    if ( dbcon.setVersion() ) {
        dbcon.done();
        // Version is zero b/c we don't yet have a way to get the local version conflict
        throw RecvStaleConfigException( ns , "for insert", ShardChunkVersion( 0 ), ShardChunkVersion( 0 ) );
    }
    dbcon->update( ns , query , toupdate, upsert, multi);
    if (safe)
        dbcon->getLastError();
    dbcon.done();
}
Exemple #11
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    virtual void getMore( Request& r ) {
        const char *ns = r.getns();

        log(3) << "single getmore: " << ns << endl;

        ShardConnection dbcon( r.primaryShard() );
        DBClientBase& _c = dbcon.conn();

        // TODO
        DBClientConnection &c = dynamic_cast<DBClientConnection&>(_c);

        Message response;
        bool ok = c.port().call( r.m() , response);
        uassert( 10204 , "dbgrid: getmore: error calling db", ok);
        r.reply( response );

        dbcon.done();

    }
Exemple #12
0
    void Strategy::doQuery( Request& r , const Shard& shard ) {

        ShardConnection dbcon( shard , r.getns() );
        DBClientBase &c = dbcon.conn();

        string actualServer;

        Message response;
        bool ok = c.call( r.m(), response, true , &actualServer );
        uassert( 10200 , "mongos: error calling db", ok );

        {
            QueryResult *qr = (QueryResult *) response.singleData();
            if ( qr->resultFlags() & ResultFlag_ShardConfigStale ) {
                dbcon.done();
                throw StaleConfigException( r.getns() , "Strategy::doQuery" );
            }
        }

        r.reply( response , actualServer.size() ? actualServer : c.getServerAddress() );
        dbcon.done();
    }
Exemple #13
0
///
/// \brief init
/// \param config
/// \return
///
int MysqlProxy::init(const Json::Value & config){

    this->dbname = config["dbname"].asString();
    this->dbnum = config["dbnum"].asInt();
    this->user = config["user"].asString();
    this->passwd = config["passwd"].asString();

    const Json::Value & addrs = config["addrs"];

    servers.resize(this->dbnum);
    serverperdb.resize(this->dbnum);

    for(unsigned int i=0;i<addrs.size();++i)
    {
        const Json::Value & dbsplit = addrs[i];

        unsigned int first = dbsplit["first"].asInt();
        unsigned int last = dbsplit["last"].asInt();
        unsigned int moduleid = dbsplit["moduleid"].asInt();

        std::string host;
        unsigned int port;

        if(moduleid == 0)
        {
            host = dbsplit["host"].asString();
            port = dbsplit["port"].asInt();
        }
        /*
        else if(0!= getIpAndPort(moduleid,0,host,port))
        {
            WARN("Get Host or Port fail,moduleid:"<<moduleid);
            return -1;
        }*/

        std::string curuser = this->user;
        std::string curpass = this->passwd;

        if(dbsplit.isMember("user"))
            curuser = dbsplit["user"].asString();

        if(dbsplit.isMember("passwd"))
            curpass = dbsplit["passwd"].asString();

        for( unsigned  int dbidx = first;dbidx <= last; ++dbidx)
        {
            servers[dbidx].moduleid = moduleid;
            servers[dbidx].user = curuser;
            servers[dbidx].passwd = curpass;
            servers[dbidx].db = this->dbname;
            servers[dbidx].host = host;
            servers[dbidx].port = port;
        }
    }

    const Json::Value & tables = config["tables"];
    for(unsigned int tidx=0; tidx < tables.size();++tidx)
    {
        std::string table = tables[tidx]["table"].asString();
        int  num = tables[tidx]["tablenum"].asInt();
        tablesplit[table] = num;
    }

    std::stringstream logstr;

    //check connection,return if connection failed
    logstr<<"Init DbProxy,db:"<<dbname<<",num:"<<dbnum<<",user:"******",password:"******",dbidx:"<<i<<",host:"<<servers[i].host<<",port:"<<servers[i].port<<",moduleid:"<<servers[i].moduleid;

        ServerContext & sc = servers[i];

        INFO("TEST connect to "<<",dbidx:"<<i<<",host:"<<servers[i].host<<",port:"<<servers[i].port<<",moduleid:"<<servers[i].moduleid);
        SqlConnect dbcon(sc.host,sc.user,sc.passwd,sc.db,sc.port);

        if(dbcon.check() !=0)
        {
            WARN("TEST fail:"<<",dbidx:"<<i<<",host:"<<servers[i].host<<",port:"<<servers[i].port<<",moduleid:"<<servers[i].moduleid);
            return -1;
        }
    }

    std::map<std::string ,int >::iterator it = tablesplit.begin();
    for(; it != tablesplit.end();++it)
    {
        logstr<<",tables:"<<it->first<<",num:"<<it->second;
    };

    INFO(logstr.str());
    return 0;
}
Exemple #14
0
        void _insert( Request& r , DbMessage& d, ChunkManagerPtr manager, vector<BSONObj>& insertsRemaining, map<ChunkPtr, vector<BSONObj> > insertsForChunks, int retries = 0 ) {

            uassert( 16055, str::stream() << "too many retries during bulk insert, " << insertsRemaining.size() << " inserts remaining", retries < 30 );
            uassert( 16056, str::stream() << "shutting down server during bulk insert, " << insertsRemaining.size() << " inserts remaining", ! inShutdown() );

            const int flags = d.reservedField() | InsertOption_ContinueOnError; // ContinueOnError is always on when using sharding.

            _groupInserts( manager, insertsRemaining, insertsForChunks );

            while( ! insertsForChunks.empty() ){

                ChunkPtr c = insertsForChunks.begin()->first;
                vector<BSONObj>& objs = insertsForChunks.begin()->second;

                const Shard& shard = c->getShard();
                const string& ns = r.getns();

                ShardConnection dbcon( shard, ns, manager );

                try {

                    LOG(4) << "  server:" << c->getShard().toString() << " bulk insert " << objs.size() << " documents" << endl;

                    // Taken from single-shard bulk insert, should not need multiple methods in future
                    // insert( c->getShard() , r.getns() , objs , flags);

                    // It's okay if the version is set here, an exception will be thrown if the version is incompatible
                    dbcon.setVersion();

                    dbcon->insert( ns , objs , flags);
                    // TODO: Option for safe inserts here - can then use this for all inserts

                    dbcon.done();

                    int bytesWritten = 0;
                    for (vector<BSONObj>::iterator vecIt = objs.begin(); vecIt != objs.end(); ++vecIt) {
                        r.gotInsert(); // Record the correct number of individual inserts
                        bytesWritten += (*vecIt).objsize();
                    }

                    // TODO: The only reason we're grouping by chunks here is for auto-split, more efficient
                    // to track this separately and bulk insert to shards
                    if ( r.getClientInfo()->autoSplitOk() )
                        c->splitIfShould( bytesWritten );

                }
                catch ( StaleConfigException& e ) {
                    // Cleanup the connection
                    dbcon.done();

                    // Assume the inserts did *not* succeed, so we don't want to erase them

                    int logLevel = retries < 2;
                    LOG( logLevel ) << "retrying bulk insert of " << objs.size() << " documents to chunk " << c << " because of StaleConfigException: " << e << endl;

                    if( retries > 2 ){
                        versionManager.forceRemoteCheckShardVersionCB( e.getns() );
                    }

                    // TODO:  Replace with actual chunk handling code, simplify request
                    r.reset();
                    manager = r.getChunkManager();

                    if( ! manager ) {
                        // TODO : We can probably handle this better?
                        uasserted( 14804, "collection no longer sharded" );
                    }
                    // End TODO

                    // We may need to regroup at least some of our inserts since our chunk manager may have changed
                    _insert( r, d, manager, insertsRemaining, insertsForChunks, retries + 1 );
                    return;
                }
                catch( UserException& ){
                    // Unexpected exception, so don't clean up the conn
                    dbcon.kill();

                    // These inserts won't be retried, as something weird happened here
                    insertsForChunks.erase( insertsForChunks.begin() );

                    // Throw if this is the last chunk bulk-inserted to
                    if( insertsForChunks.empty() ){
                        throw;
                    }
                }

                insertsForChunks.erase( insertsForChunks.begin() );
            }
        }
Exemple #15
0
 void Strategy::insert( const Shard& shard , const char * ns , const BSONObj& obj ){
     ShardConnection dbcon( shard , ns );
     dbcon->insert( ns , obj );
     dbcon.done();
 }