fix: Refactored logic for viper and mapstructure workaround

Now yaml or json parser that dedicated to transformer parameters parsing parses only transformer parameter

Fixes #85

internal/domains/config.go

@@ -129,3 +129,16 @@ type Table struct {
 	Transformers        []*TransformerConfig `mapstructure:"transformers" yaml:"transformers" json:"transformers,omitempty"`
 	ColumnsTypeOverride map[string]string    `mapstructure:"columns_type_override" yaml:"columns_type_override" json:"columns_type_override,omitempty"`
 }
+
+// DummyConfig - This is a dummy config to the viper workaround
+// It is used to parse the transformation parameters manually only avoiding parsing other pars of the config
+// The reason why is there https://github.com/GreenmaskIO/greenmask/discussions/85
+type DummyConfig struct {
+	Dump struct {
+		Transformation []struct {
+			Transformers []struct {
+				Params map[string]interface{} `yaml:"params" json:"params"`
+			} `yaml:"transformers" json:"transformers"`
+		} `yaml:"transformation" json:"transformation"`
+	} `yaml:"dump" json:"dump"`
+}

internal/utils/config/viper_workaround.go

@@ -32,8 +32,7 @@ import (
 // To overcome this problem we need use default yaml and json parsers avoiding vaiper or mapstructure usage.
 func ParseTransformerParamsManually(cfgFilePath string, cfg *domains.Config) error {
 	ext := path.Ext(cfgFilePath)
-	//cfgMap := make(map[string]any)
-	tmpCfg := domains.NewConfig()
+	tmpCfg := &domains.DummyConfig{}
 	f, err := os.Open(cfgFilePath)
 	if err != nil {
 		return err
@@ -57,12 +56,13 @@ func ParseTransformerParamsManually(cfgFilePath string, cfg *domains.Config) err
 
 // setTransformerParams - get the value from domains.TransformerConfig.TempParams, marshall this value and store into
 // domains.TransformerConfig.Params
-func setTransformerParams(tmpCfg, cfg *domains.Config) (err error) {
+func setTransformerParams(tmpCfg *domains.DummyConfig, cfg *domains.Config) (err error) {
 	for tableIdx, tableObj := range tmpCfg.Dump.Transformation {
 		for transformationIdx, transformationObj := range tableObj.Transformers {
 			transformer := cfg.Dump.Transformation[tableIdx].Transformers[transformationIdx]
+			transformerParametersHook := tmpCfg.Dump.Transformation[tableIdx].Transformers[transformationIdx]
 			paramsMap := make(map[string]toolkit.ParamsValue, len(transformationObj.Params))
-			for paramName, decodedValue := range transformer.TempParams {
+			for paramName, decodedValue := range transformerParametersHook.Params {
 				var encodedVal toolkit.ParamsValue
 				switch v := decodedValue.(type) {
 				case string: