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handler_factory.go
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/
handler_factory.go
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// Copyright The Jet authors. All rights reserved.
// Use of this source code is governed by a MIT style
// license that can be found in the LICENSE file.
package handler
import (
"errors"
"github.com/fengyuan-liang/jet-web-fasthttp/pkg/constant"
"reflect"
"strings"
)
// ---------------------------------------------------------------------------
var ErrMethodPrefix = errors.New("invalid method name prefix")
type HandlerFactory map[string]CreatorFunc
var defaultHandlerCreator = HandlerCreator{}.New
var Factory = HandlerFactory{
constant.MethodGet: defaultHandlerCreator,
constant.MethodPost: defaultHandlerCreator,
constant.MethodPut: defaultHandlerCreator,
constant.MethodDelete: defaultHandlerCreator,
}
func (factory HandlerFactory) Create(rcvr *reflect.Value, method *reflect.Method) (string, IHandler, error) {
var (
prefix string
ok bool
creatorFunc CreatorFunc
)
prefix, ok = prefixOf(method.Name)
if !ok {
return "", nil, ErrMethodPrefix
}
if creatorFunc, ok = factory[strings.ToUpper(prefix)]; ok {
h, err := creatorFunc(rcvr, method)
if err != nil {
return "", nil, err
}
return prefix, h, nil
}
return "", nil, ErrMethodPrefix
}
type creatorRegisterFunc func(factory HandlerFactory) (creatorFunc CreatorFunc)
// RegisterFactory
// You can replace the default factory implementation,
// but you must bear the risk for this.
// Calmly, you can also add new factories to implement your own processing logic.
//
// You can enhance the default factory or do some pre- or post-processing,
// like before- or after-RegisterHook.
func (factory HandlerFactory) RegisterFactory(prefix string, newFactoryFunc creatorRegisterFunc) {
factory[prefix] = newFactoryFunc(factory)
}