Golang QueryResult.Error方法代码示例

// ExecuteKeyRanges executes a non-streaming query based on the specified keyranges.
func (vtg *VTGate) ExecuteKeyRanges(ctx context.Context, sql string, bindVariables map[string]interface{}, keyspace string, keyRanges []*pb.KeyRange, tabletType pb.TabletType, session *proto.Session, notInTransaction bool, reply *proto.QueryResult) error {
	startTime := time.Now()
	statsKey := []string{"ExecuteKeyRanges", keyspace, strings.ToLower(tabletType.String())}
	defer vtg.timings.Record(statsKey, startTime)

	x := vtg.inFlight.Add(1)
	defer vtg.inFlight.Add(-1)
	if 0 < vtg.maxInFlight && vtg.maxInFlight < x {
		return errTooManyInFlight
	}

	sql = sqlannotation.AddFilteredReplicationUnfriendlyIfDML(sql)

	qr, err := vtg.resolver.ExecuteKeyRanges(ctx, sql, bindVariables, keyspace, keyRanges, tabletType, session, notInTransaction)
	if err == nil {
		reply.Result = qr
		vtg.rowsReturned.Add(statsKey, int64(len(qr.Rows)))
	} else {
		query := map[string]interface{}{
			"Sql":              sql,
			"BindVariables":    bindVariables,
			"Keyspace":         keyspace,
			"KeyRanges":        keyRanges,
			"TabletType":       strings.ToLower(tabletType.String()),
			"Session":          session,
			"NotInTransaction": notInTransaction,
		}
		reply.Error = handleExecuteError(err, statsKey, query, vtg.logExecuteKeyRanges).Error()
		reply.Err = vterrors.RPCErrFromVtError(err)
	}
	reply.Session = session
	return nil
}

// ExecuteEntityIds excutes a non-streaming query based on given KeyspaceId map.
func (vtg *VTGate) ExecuteEntityIds(context interface{}, query *proto.EntityIdsQuery, reply *proto.QueryResult) error {
	shardMap, err := mapEntityIdsToShards(
		vtg.scatterConn.toposerv,
		vtg.scatterConn.cell,
		query.Keyspace,
		query.EntityKeyspaceIdMap,
		query.TabletType)
	if err != nil {
		return err
	}
	shards, sqls, bindVars := buildEntityIds(shardMap, query.Sql, query.EntityColumnName, query.BindVariables)
	qr, err := vtg.scatterConn.ExecuteEntityIds(
		context,
		shards,
		sqls,
		bindVars,
		query.Keyspace,
		query.TabletType,
		NewSafeSession(query.Session))
	if err == nil {
		proto.PopulateQueryResult(qr, reply)
	} else {
		reply.Error = err.Error()
		log.Errorf("ExecuteEntityIds: %v, query: %+v", err, query)
	}
	reply.Session = query.Session
	return nil
}

// Execute executes a non-streaming query by routing based on the values in the query.
func (vtg *VTGate) Execute(ctx context.Context, sql string, bindVariables map[string]interface{}, tabletType pb.TabletType, session *proto.Session, notInTransaction bool, reply *proto.QueryResult) error {
	startTime := time.Now()
	statsKey := []string{"Execute", "Any", strings.ToLower(tabletType.String())}
	defer vtg.timings.Record(statsKey, startTime)

	x := vtg.inFlight.Add(1)
	defer vtg.inFlight.Add(-1)
	if 0 < vtg.maxInFlight && vtg.maxInFlight < x {
		return errTooManyInFlight
	}

	qr, err := vtg.router.Execute(ctx, sql, bindVariables, tabletType, session, notInTransaction)
	if err == nil {
		reply.Result = qr
		vtg.rowsReturned.Add(statsKey, int64(len(qr.Rows)))
	} else {
		query := map[string]interface{}{
			"Sql":              sql,
			"BindVariables":    bindVariables,
			"TabletType":       strings.ToLower(tabletType.String()),
			"Session":          session,
			"NotInTransaction": notInTransaction,
		}
		reply.Error = handleExecuteError(err, statsKey, query, vtg.logExecute)
	}
	reply.Session = session
	return nil
}

// ExecuteKeyRanges executes a non-streaming query based on the specified keyranges.
func (vtg *VTGate) ExecuteKeyRanges(context interface{}, query *proto.KeyRangeQuery, reply *proto.QueryResult) error {
	shards, err := mapKeyRangesToShards(
		vtg.scatterConn.toposerv,
		vtg.scatterConn.cell,
		query.Keyspace,
		query.TabletType,
		query.KeyRanges)
	if err != nil {
		return err
	}
	qr, err := vtg.scatterConn.Execute(
		context,
		query.Sql,
		query.BindVariables,
		query.Keyspace,
		shards,
		query.TabletType,
		NewSafeSession(query.Session))
	if err == nil {
		proto.PopulateQueryResult(qr, reply)
	} else {
		reply.Error = err.Error()
		log.Errorf("ExecuteKeyRange: %v, query: %+v", err, query)
	}
	reply.Session = query.Session
	return nil
}

// ExecuteShard executes a non-streaming query on the specified shards.
func (vtg *VTGate) ExecuteShard(context context.Context, query *proto.QueryShard, reply *proto.QueryResult) error {
	startTime := time.Now()
	statsKey := []string{"ExecuteShard", query.Keyspace, string(query.TabletType)}
	defer vtg.timings.Record(statsKey, startTime)

	qr, err := vtg.resolver.Execute(
		context,
		query.Sql,
		query.BindVariables,
		query.Keyspace,
		query.TabletType,
		query.Session,
		func(keyspace string) (string, []string, error) {
			return query.Keyspace, query.Shards, nil
		},
	)
	if err == nil {
		reply.Result = qr
	} else {
		reply.Error = err.Error()
		if strings.Contains(reply.Error, errDupKey) {
			vtg.infoErrors.Add("DupKey", 1)
		} else {
			vtg.errors.Add(statsKey, 1)
			vtg.logExecuteShard.Errorf("%v, query: %+v", err, query)
		}
	}
	reply.Session = query.Session
	return nil
}

// ExecuteShard executes a non-streaming query on the specified shards.
func (vtg *VTGate) ExecuteShard(context interface{}, query *proto.QueryShard, reply *proto.QueryResult) error {
	startTime := time.Now()
	statsKey := []string{"ExecuteShard", query.Keyspace, string(query.TabletType)}
	defer vtg.timings.Record(statsKey, startTime)

	qr, err := vtg.resolver.Execute(
		context,
		query.Sql,
		query.BindVariables,
		query.Keyspace,
		query.TabletType,
		query.Session,
		func(keyspace string) (string, []string, error) {
			return query.Keyspace, query.Shards, nil
		},
	)
	if err == nil {
		proto.PopulateQueryResult(qr, reply)
	} else {
		reply.Error = err.Error()
		vtg.errors.Add(statsKey, 1)
		// FIXME(alainjobart): throttle this log entry
		log.Errorf("ExecuteShard: %v, query: %+v", err, query)
	}
	reply.Session = query.Session
	return nil
}

// ExecuteShard executes a non-streaming query on the specified shards.
func (vtg *VTGate) ExecuteShard(ctx context.Context, query *proto.QueryShard, reply *proto.QueryResult) error {
	startTime := time.Now()
	statsKey := []string{"ExecuteShard", query.Keyspace, string(query.TabletType)}
	defer vtg.timings.Record(statsKey, startTime)

	x := vtg.inFlight.Add(1)
	defer vtg.inFlight.Add(-1)
	if 0 < vtg.maxInFlight && vtg.maxInFlight < x {
		return errTooManyInFlight
	}

	qr, err := vtg.resolver.Execute(
		ctx,
		query.Sql,
		query.BindVariables,
		query.Keyspace,
		query.TabletType,
		query.Session,
		func(keyspace string) (string, []string, error) {
			return query.Keyspace, query.Shards, nil
		},
		query.NotInTransaction,
	)
	if err == nil {
		reply.Result = qr
		vtg.rowsReturned.Add(statsKey, int64(len(qr.Rows)))
	} else {
		reply.Error = handleExecuteError(err, statsKey, query, vtg.logExecuteShard)
	}
	reply.Session = query.Session
	return nil
}

// ExecuteEntityIds excutes a non-streaming query based on given KeyspaceId map.
func (vtg *VTGate) ExecuteEntityIds(context context.Context, query *proto.EntityIdsQuery, reply *proto.QueryResult) (err error) {
	defer handlePanic(&err)

	startTime := time.Now()
	statsKey := []string{"ExecuteEntityIds", query.Keyspace, string(query.TabletType)}
	defer vtg.timings.Record(statsKey, startTime)

	x := vtg.inFlight.Add(1)
	defer vtg.inFlight.Add(-1)
	if 0 < vtg.maxInFlight && vtg.maxInFlight < x {
		return ErrTooManyInFlight
	}

	qr, err := vtg.resolver.ExecuteEntityIds(context, query)
	if err == nil {
		reply.Result = qr
	} else {
		reply.Error = err.Error()
		if strings.Contains(reply.Error, errDupKey) {
			infoErrors.Add("DupKey", 1)
		} else {
			normalErrors.Add(statsKey, 1)
			vtg.logExecuteEntityIds.Errorf("%v, query: %+v", err, query)
		}
	}
	reply.Session = query.Session
	return nil
}

// ExecuteEntityIds excutes a non-streaming query based on given KeyspaceId map.
func (vtg *VTGate) ExecuteEntityIds(ctx context.Context, sql string, bindVariables map[string]interface{}, keyspace string, entityColumnName string, entityKeyspaceIDs []*pbg.ExecuteEntityIdsRequest_EntityId, tabletType pb.TabletType, session *proto.Session, notInTransaction bool, reply *proto.QueryResult) error {
	startTime := time.Now()
	statsKey := []string{"ExecuteEntityIds", keyspace, strings.ToLower(tabletType.String())}
	defer vtg.timings.Record(statsKey, startTime)

	x := vtg.inFlight.Add(1)
	defer vtg.inFlight.Add(-1)
	if 0 < vtg.maxInFlight && vtg.maxInFlight < x {
		return errTooManyInFlight
	}

	qr, err := vtg.resolver.ExecuteEntityIds(ctx, sql, bindVariables, keyspace, entityColumnName, entityKeyspaceIDs, tabletType, session, notInTransaction)
	if err == nil {
		reply.Result = qr
		vtg.rowsReturned.Add(statsKey, int64(len(qr.Rows)))
	} else {
		query := map[string]interface{}{
			"Sql":               sql,
			"BindVariables":     bindVariables,
			"Keyspace":          keyspace,
			"EntityColumnName":  entityColumnName,
			"EntityKeyspaceIDs": entityKeyspaceIDs,
			"TabletType":        strings.ToLower(tabletType.String()),
			"Session":           session,
			"NotInTransaction":  notInTransaction,
		}
		reply.Error = handleExecuteError(err, statsKey, query, vtg.logExecuteEntityIds).Error()
		reply.Err = rpcErrFromVtGateError(err)
	}
	reply.Session = session
	return nil
}

func (c *errorClient) Execute(ctx context.Context, sql string, bindVariables map[string]interface{}, tabletType pb.TabletType, session *proto.Session, notInTransaction bool, reply *proto.QueryResult) error {
	if rpcErr := requestToPartialError(sql); rpcErr != nil {
		reply.Err = rpcErr
		reply.Error = rpcErr.Message
		return nil
	}
	if err := requestToError(sql); err != nil {
		return err
	}
	return c.fallbackClient.Execute(ctx, sql, bindVariables, tabletType, session, notInTransaction, reply)
}

// ExecuteEntityIds excutes a non-streaming query based on given KeyspaceId map.
func (vtg *VTGate) ExecuteEntityIds(context interface{}, query *proto.EntityIdsQuery, reply *proto.QueryResult) error {
	qr, err := vtg.resolver.ExecuteEntityIds(context, query)
	if err == nil {
		proto.PopulateQueryResult(qr, reply)
	} else {
		reply.Error = err.Error()
		log.Errorf("ExecuteEntityIds: %v, query: %+v", err, query)
	}
	reply.Session = query.Session
	return nil
}

// requestToPartialError fills reply for a partial error if requested.
// It returns true if a partial error was requested, false otherwise.
// This partial error should only be returned by Execute* calls.
func requestToPartialError(request string, session *pbg.Session, reply *proto.QueryResult) bool {
	if !strings.HasPrefix(request, PartialErrorPrefix) {
		return false
	}
	request = strings.TrimPrefix(request, PartialErrorPrefix)
	parts := strings.Split(request, "/")
	rpcErr := vterrors.RPCErrFromVtError(trimmedRequestToError(parts[0]))
	reply.Err = rpcErr
	reply.Error = rpcErr.Message
	reply.Session = session
	if len(parts) > 1 && parts[1] == "close transaction" {
		reply.Session.InTransaction = false
	}
	return true
}

// ExecuteKeyspaceIds executes a non-streaming query based on the specified keyspace ids.
func (vtg *VTGate) ExecuteKeyspaceIds(context interface{}, query *proto.KeyspaceIdQuery, reply *proto.QueryResult) error {
	startTime := time.Now()
	statsKey := []string{"ExecuteKeyspaceIds", query.Keyspace, string(query.TabletType)}
	defer vtg.timings.Record(statsKey, startTime)

	qr, err := vtg.resolver.ExecuteKeyspaceIds(context, query)
	if err == nil {
		proto.PopulateQueryResult(qr, reply)
	} else {
		reply.Error = err.Error()
		vtg.errors.Add(statsKey, 1)
		vtg.logExecuteKeyspaceIds.Errorf("%v, query: %+v", err, query)
	}
	reply.Session = query.Session
	return nil
}

// ExecuteEntityIds excutes a non-streaming query based on given KeyspaceId map.
func (vtg *VTGate) ExecuteEntityIds(context interface{}, query *proto.EntityIdsQuery, reply *proto.QueryResult) error {
	startTime := time.Now()
	statsKey := []string{"ExecuteEntityIds", query.Keyspace, string(query.TabletType)}
	defer vtg.timings.Record(statsKey, startTime)

	qr, err := vtg.resolver.ExecuteEntityIds(context, query)
	if err == nil {
		proto.PopulateQueryResult(qr, reply)
	} else {
		reply.Error = err.Error()
		vtg.errors.Add(statsKey, 1)
		// FIXME(alainjobart): throttle this log entry
		log.Errorf("ExecuteEntityIds: %v, query: %+v", err, query)
	}
	reply.Session = query.Session
	return nil
}

// ExecuteShard executes a non-streaming query on the specified shards.
func (vtg *VTGate) ExecuteShard(context *rpcproto.Context, query *proto.QueryShard, reply *proto.QueryResult) error {
	qr, err := vtg.scatterConn.Execute(
		query.Sql,
		query.BindVariables,
		query.Keyspace,
		query.Shards,
		query.TabletType,
		NewSafeSession(query.Session))
	if err == nil {
		proto.PopulateQueryResult(qr, reply)
	} else {
		reply.Error = err.Error()
		log.Errorf("ExecuteShard: %v, query: %#v", err, query)
	}
	reply.Session = query.Session
	return nil
}