support dbt-mssql converting

Author: goldmedal

wren-launcher/commands/dbt/converter.go

@@ -139,6 +139,26 @@ func ConvertDbtProjectCore(opts ConvertOptions) (*ConvertResult, error) {
 						"password": typedDS.Password,
 					},
 				}
+			case *WrenMSSQLDataSource:
+				var host string
+				if opts.UsedByContainer {
+					host = handleLocalhostForContainer(typedDS.Host)
+				} else {
+					host = typedDS.Host
+				}
+				wrenDataSource = map[string]interface{}{
+					"type": "mssql",
+					"properties": map[string]interface{}{
+						"host":        host,
+						"port":        typedDS.Port,
+						"database":    typedDS.Database,
+						"user":        typedDS.User,
+						"password":    typedDS.Password,
+						"tds_version": typedDS.TdsVersion,
+						"driver":      typedDS.Driver,
+						"kwargs":      typedDS.Kwargs,
+					},
+				}
 			case *WrenLocalFileDataSource:
 				var url string
 				if opts.UsedByContainer {

wren-launcher/commands/dbt/data_source.go

@@ -3,19 +3,29 @@ package dbt
 import (
 	"fmt"
 	"path/filepath"
+	"strconv"
 	"strings"
 
 	"github.com/pterm/pterm"
 )
 
 // Constants for data types
 const (
-	integerType   = "integer"
-	varcharType   = "varchar"
-	dateType      = "date"
-	timestampType = "timestamp"
-	doubleType    = "double"
-	booleanType   = "boolean"
+	integerType     = "integer"
+	smallintType    = "smallint"
+	bigintType      = "bigint"
+	floatType       = "float"
+	decimalType     = "decimal"
+	varcharType     = "varchar"
+	charType        = "char"
+	textType        = "text"
+	dateType        = "date"
+	timestampType   = "timestamp"
+	timestamptzType = "timestamptz"
+	doubleType      = "double"
+	booleanType     = "boolean"
+	jsonType        = "json"
+	intervalType    = "interval"
 )
 
 // Constants for SQL data types
@@ -77,6 +87,8 @@ func convertConnectionToDataSource(conn DbtConnection, dbtHomePath, profileName,
 		return convertToPostgresDataSource(conn)
 	case "duckdb":
 		return convertToLocalFileDataSource(conn, dbtHomePath)
+	case "sqlserver":
+		return convertToMSSQLDataSource(conn)
 	default:
 		// For unsupported database types, we can choose to ignore or return error
 		// Here we choose to return nil and log a warning
@@ -103,6 +115,26 @@ func convertToPostgresDataSource(conn DbtConnection) (*WrenPostgresDataSource, e
 	return ds, nil
 }
 
+func convertToMSSQLDataSource(conn DbtConnection) (*WrenMSSQLDataSource, error) {
+	port := strconv.Itoa(conn.Port)
+	if conn.Port == 0 {
+		port = "1433"
+	}
+
+	ds := &WrenMSSQLDataSource{
+		Database:   conn.Database,
+		Host:       conn.Server,
+		Port:       port,
+		User:       conn.User,
+		Password:   conn.Password,
+		TdsVersion: "8.0",                           // the default tds version for Wren engine image
+		Driver:     "ODBC Driver 18 for SQL Server", // the driver used by Wren engine image
+		Kwargs:     map[string]interface{}{"TrustServerCertificate": "YES"},
+	}
+
+	return ds, nil
+}
+
 // convertToLocalFileDataSource converts to local file data source
 func convertToLocalFileDataSource(conn DbtConnection, dbtHome string) (*WrenLocalFileDataSource, error) {
 	// For file types, we need to get URL and format info from Additional fields
@@ -222,6 +254,85 @@ func (ds *WrenPostgresDataSource) MapType(sourceType string) string {
 	return sourceType
 }
 
+type WrenMSSQLDataSource struct {
+	Database   string                 `json:"database"`
+	Host       string                 `json:"host"`
+	Port       string                 `json:"port"`
+	User       string                 `json:"user"`
+	Password   string                 `json:"password"`
+	TdsVersion string                 `json:"tds_version"`
+	Driver     string                 `json:"driver"`
+	Kwargs     map[string]interface{} `json:"kwargs"`
+}
+
+func (ds *WrenMSSQLDataSource) GetType() string {
+	return "mssql"
+}
+
+func (ds *WrenMSSQLDataSource) Validate() error {
+	if ds.Host == "" {
+		return fmt.Errorf("host cannot be empty")
+	}
+	if ds.Database == "" {
+		return fmt.Errorf("database cannot be empty")
+	}
+	if ds.User == "" {
+		return fmt.Errorf("user cannot be empty")
+	}
+	if ds.Port == "" {
+		return fmt.Errorf("port must be specified")
+	}
+	port, err := strconv.Atoi(ds.Port)
+	if err != nil {
+		return fmt.Errorf("port must be a valid number")
+	}
+	if port <= 0 || port > 65535 {
+		return fmt.Errorf("port must be between 1 and 65535")
+	}
+	if ds.Password == "" {
+		return fmt.Errorf("password cannot be empty")
+	}
+	return nil
+}
+
+func (ds *WrenMSSQLDataSource) MapType(sourceType string) string {
+	// This method is not used in WrenMSSQLDataSource, but required by DataSource interface
+	switch strings.ToLower(sourceType) {
+	case "char", "nchar":
+		return charType
+	case varcharType, "nvarchar":
+		return varcharType
+	case "text", "ntext":
+		return textType
+	case "bit", "tinyint":
+		return booleanType
+	case "smallint":
+		return smallintType
+	case "int":
+		return integerType
+	case "bigint":
+		return bigintType
+	case booleanType:
+		return booleanType
+	case "float", "real":
+		return floatType
+	case "decimal", "numeric", "money", "smallmoney":
+		return decimalType
+	case "date":
+		return dateType
+	case "datetime", "datetime2", "smalldatetime":
+		return timestampType
+	case "time":
+		return intervalType
+	case "datetimeoffset":
+		return timestamptzType
+	case "json":
+		return jsonType
+	default:
+		return strings.ToLower(sourceType)
+	}
+}
+
 // GetActiveDataSources gets active data sources based on specified profile and target
 // If profileName is empty, it will use the first found profile
 // If targetName is empty, it will use the profile's default target

wren-launcher/commands/dbt/data_source_test.go

@@ -193,6 +193,73 @@ func TestFromDbtProfiles_UnsupportedType(t *testing.T) {
 	}
 }
 
+func TestFromMssqlProfiles(t *testing.T) {
+	// Test MSSQL connection conversion
+	profiles := &DbtProfiles{
+		Profiles: map[string]DbtProfile{
+			"test_profile": {
+				Target: "dev",
+				Outputs: map[string]DbtConnection{
+					"dev": {
+						Type:     "sqlserver",
+						Server:   testHost,
+						Port:     1433,
+						Database: "test_db",
+						User:     testUser,
+						Password: testPassword,
+					},
+				},
+			},
+		},
+	}
+
+	dataSources, err := FromDbtProfiles(profiles)
+	if err != nil {
+		t.Fatalf("FromDbtProfiles failed: %v", err)
+	}
+
+	if len(dataSources) != 1 {
+		t.Fatalf("Expected 1 data source, got %d", len(dataSources))
+	}
+
+	ds, ok := dataSources[0].(*WrenMSSQLDataSource)
+	if !ok {
+		t.Fatalf("Expected WrenMSSQLDataSource, got %T", dataSources[0])
+	}
+
+	if ds.Host != testHost {
+		t.Errorf("Expected host '%s', got '%s'", testHost, ds.Host)
+	}
+
+	if ds.Port != "1433" {
+		t.Errorf("Expected port 1433, got %s", ds.Port)
+	}
+
+	if ds.Database != "test_db" {
+		t.Errorf("Expected database 'test_db', got '%s'", ds.Database)
+	}
+
+	if ds.User != testUser {
+		t.Errorf("Expected user '%s', got '%s'", testUser, ds.User)
+	}
+
+	if ds.Password != testPassword {
+		t.Errorf("Expected password '%s', got '%s'", testPassword, ds.Password)
+	}
+
+	if ds.TdsVersion != "8.0" {
+		t.Errorf("Expected TDS version '8.0', got '%s'", ds.TdsVersion)
+	}
+
+	if ds.Driver != "ODBC Driver 18 for SQL Server" {
+		t.Errorf("Expected driver 'ODBC Driver 18 for SQL Server', got '%s'", ds.Driver)
+	}
+
+	if ds.Kwargs["TrustServerCertificate"] != "YES" {
+		t.Errorf("Expected TrustServerCertificate 'YES', got '%s'", ds.Kwargs["TrustServerCertificate"])
+	}
+}
+
 func TestFromDbtProfiles_NilProfiles(t *testing.T) {
 	// Test nil profiles
 	_, err := FromDbtProfiles(nil)

wren-launcher/commands/dbt/profiles.go

@@ -16,6 +16,7 @@ type DbtProfile struct {
 type DbtConnection struct {
 	Type     string `yaml:"type" json:"type"`
 	Host     string `yaml:"host,omitempty" json:"host,omitempty"`
+	Server   string `yaml:"server,omitempty" json:"server,omitempty"` // MSSQL
 	Port     int    `yaml:"port,omitempty" json:"port,omitempty"`
 	User     string `yaml:"user,omitempty" json:"user,omitempty"`
 	Password string `yaml:"password,omitempty" json:"password,omitempty"`

wren-launcher/commands/dbt/profiles_analyzer.go

@@ -140,13 +140,14 @@ func parseConnection(connectionMap map[string]interface{}) (*DbtConnection, erro
 	connection.SearchPath = getString("search_path")
 	connection.SSLMode = getString("sslmode")
 	connection.Path = getString("path")
+	connection.Server = getString("server")
 
 	// Store any additional fields that weren't mapped
 	knownFields := map[string]bool{
 		"type": true, "host": true, "port": true, "user": true, "password": true,
 		"database": true, "schema": true, "project": true, "dataset": true,
 		"keyfile": true, "account": true, "warehouse": true, "role": true,
-		"keepalive": true, "search_path": true, "sslmode": true, "path": true,
+		"keepalive": true, "search_path": true, "sslmode": true, "path": true, "server": true,
 	}
 
 	for key, value := range connectionMap {