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package http
import (
"context"
"net/http"
)
const contextKey = "psr:attributes"
type attrs map[string]interface{}
// InitAttributes returns request with new context and attribute bag.
func InitAttributes(r *http.Request) *http.Request {
return r.WithContext(context.WithValue(r.Context(), contextKey, attrs{}))
}
// AllAttributes returns all context attributes.
func AllAttributes(r *http.Request) map[string]interface{} {
v := r.Context().Value(contextKey)
if v == nil {
return nil
}
return v.(attrs)
}
// Get gets the value from request context. It replaces any existing
// values.
func GetAttribute(r *http.Request, key string) interface{} {
v := r.Context().Value(contextKey)
if v == nil {
return ""
}
return v.(attrs).Get(key)
}
// Set sets the key to value. It replaces any existing
// values. Context specific.
func SetAttribute(r *http.Request, key string, value interface{}) {
v := r.Context().Value(contextKey)
v.(attrs).Set(key, value)
}
// Get gets the value associated with the given key.
func (v attrs) Get(key string) interface{} {
if v == nil {
return ""
}
return v[key]
}
// Set sets the key to value. It replaces any existing
// values.
func (v attrs) Set(key string, value interface{}) {
v[key] = value
}
// Del deletes the value associated with key.
func (v attrs) Del(key string) {
delete(v, key)
}
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