add envvar loading for bridge-history-api and coordinator

bridge-history-api/internal/config/config.go

@@ -2,8 +2,12 @@ package config
 
 import (
 	"encoding/json"
+	"fmt"
 	"os"
 	"path/filepath"
+	"reflect"
+	"strconv"
+	"strings"
 
 	"scroll-tech/common/database"
 )
@@ -12,7 +16,7 @@ import (
 type FetcherConfig struct {
 	Confirmation             uint64 `json:"confirmation"`
 	Endpoint                 string `json:"endpoint"`
-	StartHeight              uint64 `json:"startHeight"` // Can only be configured to contract deployment height, message proof should be updated from the very beginning.
+	StartHeight              uint64 `json:"startHeight"`
 	BlockTime                int64  `json:"blockTime"`
 	FetchLimit               uint64 `json:"fetchLimit"`
 	MessengerAddr            string `json:"MessengerAddr"`
@@ -66,5 +70,96 @@ func NewConfig(file string) (*Config, error) {
 		return nil, err
 	}
 
+	// Override config with environment variables
+	err = overrideConfigWithEnv(cfg, "SCROLL_BRIDGE_HISTORY")
+	if err != nil {
+		return nil, err
+	}
+
 	return cfg, nil
 }
+
+// overrideConfigWithEnv recursively overrides config values with environment variables
+func overrideConfigWithEnv(cfg interface{}, prefix string) error {
+	v := reflect.ValueOf(cfg)
+	if v.Kind() != reflect.Ptr || v.IsNil() {
+		return nil
+	}
+	v = v.Elem()
+
+	t := v.Type()
+	for i := 0; i < t.NumField(); i++ {
+		field := t.Field(i)
+		fieldValue := v.Field(i)
+
+		if !fieldValue.CanSet() {
+			continue
+		}
+
+		tag := field.Tag.Get("json")
+		if tag == "" {
+			tag = strings.ToLower(field.Name)
+		}
+
+		envKey := prefix + "_" + strings.ToUpper(tag)
+
+		switch fieldValue.Kind() {
+		case reflect.Ptr:
+			if !fieldValue.IsNil() {
+				err := overrideConfigWithEnv(fieldValue.Interface(), envKey)
+				if err != nil {
+					return err
+				}
+			}
+		case reflect.Struct:
+			err := overrideConfigWithEnv(fieldValue.Addr().Interface(), envKey)
+			if err != nil {
+				return err
+			}
+		default:
+			if envValue, exists := os.LookupEnv(envKey); exists {
+				err := setField(fieldValue, envValue)
+				if err != nil {
+					return err
+				}
+			}
+		}
+	}
+
+	return nil
+}
+
+// setField sets the value of a field based on the environment variable value
+func setField(field reflect.Value, value string) error {
+	switch field.Kind() {
+	case reflect.String:
+		field.SetString(value)
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		intValue, err := strconv.ParseInt(value, 10, 64)
+		if err != nil {
+			return err
+		}
+		field.SetInt(intValue)
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		uintValue, err := strconv.ParseUint(value, 10, 64)
+		if err != nil {
+			return err
+		}
+		field.SetUint(uintValue)
+	case reflect.Float32, reflect.Float64:
+		floatValue, err := strconv.ParseFloat(value, 64)
+		if err != nil {
+			return err
+		}
+		field.SetFloat(floatValue)
+	case reflect.Bool:
+		boolValue, err := strconv.ParseBool(value)
+		if err != nil {
+			return err
+		}
+		field.SetBool(boolValue)
+	default:
+		return fmt.Errorf("unsupported type: %v", field.Kind())
+	}
+	return nil
+}

coordinator/internal/config/config.go

@@ -2,8 +2,12 @@ package config
 
 import (
 	"encoding/json"
+	"fmt"
 	"os"
 	"path/filepath"
+	"reflect"
+	"strconv"
+	"strings"
 
 	"scroll-tech/common/database"
 )
@@ -72,5 +76,97 @@ func NewConfig(file string) (*Config, error) {
 		return nil, err
 	}
 
+	// Override config with environment variables
+	err = overrideConfigWithEnv(cfg, "SCROLL_COORDINATOR")
+	if err != nil {
+		return nil, err
+	}
+
 	return cfg, nil
 }
+
+// overrideConfigWithEnv recursively overrides config values with environment variables
+func overrideConfigWithEnv(cfg interface{}, prefix string) error {
+	v := reflect.ValueOf(cfg)
+	if v.Kind() != reflect.Ptr || v.IsNil() {
+		return nil
+	}
+	v = v.Elem()
+
+	t := v.Type()
+	for i := 0; i < t.NumField(); i++ {
+		field := t.Field(i)
+		fieldValue := v.Field(i)
+
+		if !fieldValue.CanSet() {
+			continue
+		}
+
+		tag := field.Tag.Get("json")
+		if tag == "" {
+			tag = strings.ToLower(field.Name)
+		}
+
+		envKey := prefix + "_" + strings.ToUpper(tag)
+
+		switch fieldValue.Kind() {
+		case reflect.Ptr:
+			if !fieldValue.IsNil() {
+				err := overrideConfigWithEnv(fieldValue.Interface(), envKey)
+				if err != nil {
+					return err
+				}
+			}
+		case reflect.Struct:
+			err := overrideConfigWithEnv(fieldValue.Addr().Interface(), envKey)
+			if err != nil {
+				return err
+			}
+		default:
+			if envValue, exists := os.LookupEnv(envKey); exists {
+				err := setField(fieldValue, envValue)
+				if err != nil {
+					return err
+				}
+			}
+		}
+	}
+
+	return nil
+}
+
+// setField sets the value of a field based on the environment variable value
+func setField(field reflect.Value, value string) error {
+	switch field.Kind() {
+	case reflect.String:
+		field.SetString(value)
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		intValue, err := strconv.ParseInt(value, 10, 64)
+		if err != nil {
+			return err
+		}
+		field.SetInt(intValue)
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		uintValue, err := strconv.ParseUint(value, 10, 64)
+		if err != nil {
+			return err
+		}
+		field.SetUint(uintValue)
+	case reflect.Float32, reflect.Float64:
+		floatValue, err := strconv.ParseFloat(value, 64)
+		if err != nil {
+			return err
+		}
+		field.SetFloat(floatValue)
+	case reflect.Bool:
+		boolValue, err := strconv.ParseBool(value)
+		if err != nil {
+			return err
+		}
+		field.SetBool(boolValue)
+	default:
+		return fmt.Errorf("unsupported type: %v", field.Kind())
+	}
+	return nil
+
+}