/
registry.go
44 lines (35 loc) · 1.03 KB
/
registry.go
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package middleware
import (
"net/http"
"sync"
"github.com/tendermint/tendermint/libs/log"
)
var (
once sync.Once
instance *Registry
)
// HandlerFunc is a type alias for a function that takes an http.Handler and returns a new http.Handler.
type HandlerFunc func(http.Handler) http.Handler
// Middleware is an interface representing a middleware with a Handler method.
type Middleware interface {
Handler(logger log.Logger) HandlerFunc
}
// Registry is a struct that holds a list of registered middlewares.
type Registry struct {
middlewareList []Middleware
}
// GetRegistry returns a singleton instance of the Registry.
func GetRegistry() *Registry {
once.Do(func() {
instance = &Registry{}
})
return instance
}
// Register adds a Middleware to the list of registered middlewares in the Registry.
func (r *Registry) Register(m Middleware) {
r.middlewareList = append(r.middlewareList, m)
}
// GetRegistered returns a list of registered middlewares.
func (r *Registry) GetRegistered() []Middleware {
return r.middlewareList
}