github.com/xmplusdev/xray-core@v1.8.10/common/type.go (about)

     1  package common
     2  
     3  import (
     4  	"context"
     5  	"reflect"
     6  )
     7  
     8  // ConfigCreator is a function to create an object by a config.
     9  type ConfigCreator func(ctx context.Context, config interface{}) (interface{}, error)
    10  
    11  var typeCreatorRegistry = make(map[reflect.Type]ConfigCreator)
    12  
    13  // RegisterConfig registers a global config creator. The config can be nil but must have a type.
    14  func RegisterConfig(config interface{}, configCreator ConfigCreator) error {
    15  	configType := reflect.TypeOf(config)
    16  	if _, found := typeCreatorRegistry[configType]; found {
    17  		return newError(configType.Name() + " is already registered").AtError()
    18  	}
    19  	typeCreatorRegistry[configType] = configCreator
    20  	return nil
    21  }
    22  
    23  // CreateObject creates an object by its config. The config type must be registered through RegisterConfig().
    24  func CreateObject(ctx context.Context, config interface{}) (interface{}, error) {
    25  	configType := reflect.TypeOf(config)
    26  	creator, found := typeCreatorRegistry[configType]
    27  	if !found {
    28  		return nil, newError(configType.String() + " is not registered").AtError()
    29  	}
    30  	return creator(ctx, config)
    31  }