feat: separate storage method for aggregates

api/api.go

@@ -70,7 +70,7 @@ type QueryResponse struct {
 	// @Description Query result data
 	Data interface{} `json:"data,omitempty"`
 	// @Description Aggregation results
-	Aggregations map[string]string `json:"aggregations,omitempty"`
+	Aggregations []map[string]interface{} `json:"aggregations,omitempty"`
 }
 
 func writeError(w http.ResponseWriter, message string, code int) {

internal/handlers/logs_handlers.go

@@ -133,39 +133,59 @@ func handleLogsRequest(c *gin.Context, contractAddress, signature string) {
 		return
 	}
 
-	logs, err := mainStorage.GetLogs(storage.QueryFilter{
+	// Prepare the QueryFilter
+	qf := storage.QueryFilter{
 		FilterParams:    queryParams.FilterParams,
-		GroupBy:         queryParams.GroupBy,
+		ContractAddress: contractAddress,
+		Signature:       signatureHash,
+		ChainId:         chainId,
 		SortBy:          queryParams.SortBy,
 		SortOrder:       queryParams.SortOrder,
 		Page:            queryParams.Page,
 		Limit:           queryParams.Limit,
-		Aggregates:      queryParams.Aggregates,
-		ContractAddress: contractAddress,
-		Signature:       signatureHash,
-		ChainId:         chainId,
-	})
-	if err != nil {
-		log.Error().Err(err).Msg("Error querying logs")
-		api.InternalErrorHandler(c)
-		return
 	}
 
-	response := api.QueryResponse{
+	// Initialize the QueryResult
+	queryResult := api.QueryResponse{
 		Meta: api.Meta{
 			ChainId:         chainId.Uint64(),
 			ContractAddress: contractAddress,
 			Signature:       signatureHash,
 			Page:            queryParams.Page,
 			Limit:           queryParams.Limit,
-			TotalItems:      len(logs.Data),
-			TotalPages:      0, // TODO: Implement total pages count
+			TotalItems:      0,
+			TotalPages:      0, // Implement total pages count if needed
 		},
-		Data:         logs.Data,
-		Aggregations: logs.Aggregates,
+		Data:         nil,
+		Aggregations: nil,
+	}
+
+	// If aggregates are specified, retrieve them
+	if len(queryParams.Aggregates) > 0 {
+		qf.Aggregates = queryParams.Aggregates
+		qf.GroupBy = queryParams.GroupBy
+
+		aggregatesResult, err := mainStorage.GetAggregations("logs", qf)
+		if err != nil {
+			log.Error().Err(err).Msg("Error querying aggregates")
+			api.InternalErrorHandler(c)
+			return
+		}
+		queryResult.Aggregations = aggregatesResult.Aggregates
+		queryResult.Meta.TotalItems = len(aggregatesResult.Aggregates)
+	} else {
+		// Retrieve logs data
+		logsResult, err := mainStorage.GetLogs(qf)
+		if err != nil {
+			log.Error().Err(err).Msg("Error querying logs")
+			api.InternalErrorHandler(c)
+			return
+		}
+		queryResult.Data = logsResult.Data
+		queryResult.Meta.TotalItems = len(logsResult.Data)
 	}
 
-	sendJSONResponse(c, response)
+	sendJSONResponse(c, queryResult)
 }
 
 func getMainStorage() (storage.IMainStorage, error) {

internal/handlers/transactions_handlers.go

@@ -163,7 +163,7 @@ func handleTransactionsRequest(c *gin.Context, contractAddress, signature string
 			TotalPages:      0, // TODO: Implement total pages count
 		},
 		Data:         result.Data,
-		Aggregations: result.Aggregates,
+		Aggregations: nil,
 	}
 
 	c.JSON(http.StatusOK, response)

internal/storage/clickhouse.go

@@ -291,19 +291,66 @@ func (c *ClickHouseConnector) GetTransactions(qf QueryFilter) (QueryResult[commo
 	return executeQuery[common.Transaction](c, "transactions", columns, qf, scanTransaction)
 }
 
-func (c *ClickHouseConnector) GetLogs(qf QueryFilter) (QueryResult[map[string]interface{}], error) {
-	var columns string
+func (c *ClickHouseConnector) GetLogs(qf QueryFilter) (QueryResult[common.Log], error) {
+	columns := "chain_id, block_number, block_hash, block_timestamp, transaction_hash, transaction_index, log_index, address, data, topic_0, topic_1, topic_2, topic_3"
+	return executeQuery[common.Log](c, "logs", columns, qf, scanLog)
+}
+
+func (c *ClickHouseConnector) GetAggregations(table string, qf QueryFilter) (QueryResult[interface{}], error) {
+	// Build the SELECT clause with aggregates
+	columns := strings.Join(append(qf.GroupBy, qf.Aggregates...), ", ")
+	query := fmt.Sprintf("SELECT %s FROM %s.%s WHERE is_deleted = 0", columns, c.cfg.Database, table)
+
+	// Apply filters
+	if qf.ChainId != nil && qf.ChainId.Sign() > 0 {
+		query = addFilterParams("chain_id", qf.ChainId.String(), query)
+	}
+	query = addContractAddress(table, query, qf.ContractAddress)
+
+	if qf.Signature != "" {
+		query += fmt.Sprintf(" AND topic_0 = '%s'", qf.Signature)
+	}
 
-	if len(qf.GroupBy) > 0 || len(qf.Aggregates) > 0 {
-		// Build columns for SELECT when grouping or aggregating
-		selectColumns := append(qf.GroupBy, qf.Aggregates...)
-		columns = strings.Join(selectColumns, ", ")
-	} else {
-		// Default columns when not grouping
-		columns = "chain_id, block_number, block_hash, block_timestamp, transaction_hash, transaction_index, log_index, address, data, topic_0, topic_1, topic_2, topic_3"
+	for key, value := range qf.FilterParams {
+		query = addFilterParams(key, strings.ToLower(value), query)
 	}
 
-	return executeQuery[map[string]interface{}](c, "logs", columns, qf, scanRowToMap)
+	// Add GROUP BY clause if specified
+	if len(qf.GroupBy) > 0 {
+		groupByColumns := strings.Join(qf.GroupBy, ", ")
+		query += fmt.Sprintf(" GROUP BY %s", groupByColumns)
+	}
+
+	// Execute the query
+	rows, err := c.conn.Query(context.Background(), query)
+	if err != nil {
+		return QueryResult[interface{}]{}, err
+	}
+	defer rows.Close()
+
+	// Collect results
+	var aggregates []map[string]interface{}
+	for rows.Next() {
+		columns := rows.Columns()
+		values := make([]interface{}, len(columns))
+		valuePtrs := make([]interface{}, len(columns))
+		for i := range columns {
+			valuePtrs[i] = &values[i]
+		}
+
+		if err := rows.Scan(valuePtrs...); err != nil {
+			return QueryResult[interface{}]{}, err
+		}
+
+		result := make(map[string]interface{})
+		for i, col := range columns {
+			result[col] = values[i]
+		}
+
+		aggregates = append(aggregates, result)
+	}
+
+	return QueryResult[interface{}]{Data: nil, Aggregates: aggregates}, nil
 }
 
 func executeQuery[T any](c *ClickHouseConnector, table, columns string, qf QueryFilter, scanFunc func(driver.Rows) (T, error)) (QueryResult[T], error) {
@@ -316,8 +363,7 @@ func executeQuery[T any](c *ClickHouseConnector, table, columns string, qf Query
 	defer rows.Close()
 
 	queryResult := QueryResult[T]{
-		Data:       []T{},
-		Aggregates: map[string]string{},
+		Data: []T{},
 	}
 
 	for rows.Next() {
@@ -328,21 +374,13 @@ func executeQuery[T any](c *ClickHouseConnector, table, columns string, qf Query
 		queryResult.Data = append(queryResult.Data, item)
 	}
 
-	if len(qf.Aggregates) > 0 {
-		aggregates, err := c.executeAggregateQuery(table, qf)
-		if err != nil {
-			return queryResult, err
-		}
-		queryResult.Aggregates = aggregates
-	}
-
 	return queryResult, nil
 }
 
 func (c *ClickHouseConnector) buildQuery(table, columns string, qf QueryFilter) string {
 	query := fmt.Sprintf("SELECT %s FROM %s.%s WHERE is_deleted = 0", columns, c.cfg.Database, table)
 
-	if qf.ChainId.Sign() > 0 {
+	if qf.ChainId != nil && qf.ChainId.Sign() > 0 {
 		query = addFilterParams("chain_id", qf.ChainId.String(), query)
 	}
 	query = addContractAddress(table, query, qf.ContractAddress)
@@ -356,12 +394,6 @@ func (c *ClickHouseConnector) buildQuery(table, columns string, qf QueryFilter)
 		query = addFilterParams(key, strings.ToLower(value), query)
 	}
 
-	// Add GROUP BY clause if specified
-	if len(qf.GroupBy) > 0 {
-		groupByColumns := strings.Join(qf.GroupBy, ", ")
-		query += fmt.Sprintf(" GROUP BY %s", groupByColumns)
-	}
-
 	// Add ORDER BY clause
 	if qf.SortBy != "" {
 		query += fmt.Sprintf(" ORDER BY %s %s", qf.SortBy, qf.SortOrder)
@@ -371,9 +403,8 @@ func (c *ClickHouseConnector) buildQuery(table, columns string, qf QueryFilter)
 	if qf.Page > 0 && qf.Limit > 0 {
 		offset := (qf.Page - 1) * qf.Limit
 		query += fmt.Sprintf(" LIMIT %d OFFSET %d", qf.Limit, offset)
-	} else {
-		// Add limit clause
-		query += getLimitClause(int(qf.Limit))
+	} else if qf.Limit > 0 {
+		query += fmt.Sprintf(" LIMIT %d", qf.Limit)
 	}
 
 	return query
@@ -433,35 +464,6 @@ func getTopicValueFormat(topic string) string {
 	return result
 }
 
-func (c *ClickHouseConnector) executeAggregateQuery(table string, qf QueryFilter) (map[string]string, error) {
-	aggregateQuery := "SELECT " + strings.Join(qf.Aggregates, ", ") +
-		fmt.Sprintf(" FROM %s.%s WHERE is_deleted = 0", c.cfg.Database, table)
-
-	if qf.ContractAddress != "" {
-		aggregateQuery += fmt.Sprintf(" AND address = '%s'", qf.ContractAddress)
-	}
-	if qf.Signature != "" {
-		aggregateQuery += fmt.Sprintf(" AND topic_0 = '%s'", qf.Signature)
-	}
-	for key, value := range qf.FilterParams {
-		aggregateQuery += fmt.Sprintf(" AND %s = '%s'", key, value)
-	}
-
-	row := c.conn.QueryRow(context.Background(), aggregateQuery)
-	aggregateResultsJSON, err := json.Marshal(row)
-	if err != nil {
-		return nil, fmt.Errorf("error marshaling aggregate results to JSON: %w", err)
-	}
-
-	var aggregateResultsMap map[string]string
-	err = json.Unmarshal(aggregateResultsJSON, &aggregateResultsMap)
-	if err != nil {
-		return nil, fmt.Errorf("error unmarshaling aggregate results JSON to map: %w", err)
-	}
-
-	return aggregateResultsMap, nil
-}
-
 func scanTransaction(rows driver.Rows) (common.Transaction, error) {
 	var tx common.Transaction
 	err := rows.Scan(
@@ -521,27 +523,6 @@ func scanLog(rows driver.Rows) (common.Log, error) {
 	return log, nil
 }
 
-func scanRowToMap(rows driver.Rows) (map[string]interface{}, error) {
-	columns := rows.Columns()
-	values := make([]interface{}, len(columns))
-	valuePtrs := make([]interface{}, len(columns))
-
-	for i := range columns {
-		valuePtrs[i] = &values[i]
-	}
-
-	if err := rows.Scan(valuePtrs...); err != nil {
-		return nil, err
-	}
-
-	result := make(map[string]interface{})
-	for i, col := range columns {
-		result[col] = values[i]
-	}
-
-	return result, nil
-}
-
 func (c *ClickHouseConnector) GetMaxBlockNumber(chainId *big.Int) (maxBlockNumber *big.Int, err error) {
 	query := fmt.Sprintf("SELECT number FROM %s.blocks WHERE is_deleted = 0", c.cfg.Database)
 	if chainId.Sign() > 0 {

internal/storage/connector.go

@@ -18,16 +18,17 @@ type QueryFilter struct {
 	Page            int
 	Limit           int
 	Offset          int
-	Aggregates      []string
+	Aggregates      []string // e.g., ["COUNT(*) AS count", "SUM(amount) AS total_amount"]
 	FromAddress     string
 	ContractAddress string
 	Signature       string
 }
 type QueryResult[T any] struct {
 	// TODO: findout how to only allow Log/transaction arrays or split the result
-	Data       []T               `json:"data"`
-	Aggregates map[string]string `json:"aggregates"`
+	Data       []T                      `json:"data"`
+	Aggregates []map[string]interface{} `json:"aggregates"`
 }
+
 type IStorage struct {
 	OrchestratorStorage IOrchestratorStorage
 	MainStorage         IMainStorage
@@ -54,7 +55,8 @@ type IMainStorage interface {
 
 	GetBlocks(qf QueryFilter) (blocks []common.Block, err error)
 	GetTransactions(qf QueryFilter) (transactions QueryResult[common.Transaction], err error)
-	GetLogs(qf QueryFilter) (logs QueryResult[map[string]interface{}], err error)
+	GetLogs(qf QueryFilter) (logs QueryResult[common.Log], err error)
+	GetAggregations(table string, qf QueryFilter) (QueryResult[interface{}], error)
 	GetTraces(qf QueryFilter) (traces []common.Trace, err error)
 	GetMaxBlockNumber(chainId *big.Int) (maxBlockNumber *big.Int, err error)
 	/**