gql.sr.ht/config/middleware.go

45 lines
951 B
Go

package config
import (
"context"
"errors"
"net/http"
"github.com/vaughan0/go-ini"
)
var configCtxKey = &contextKey{"config"}
var serviceCtxKey = &contextKey{"name"}
type contextKey struct {
name string
}
func Middleware(conf ini.File, service string) func (next http.Handler) http.Handler {
svc := service
return func (next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctx := context.WithValue(r.Context(), configCtxKey, conf)
ctx = context.WithValue(ctx, serviceCtxKey, &svc)
r = r.WithContext(ctx)
next.ServeHTTP(w, r)
})
}
}
func ForContext(ctx context.Context) ini.File {
raw, ok := ctx.Value(configCtxKey).(ini.File)
if !ok {
panic(errors.New("Invalid config context"))
}
return raw
}
func ServiceName(ctx context.Context) string {
raw, ok := ctx.Value(serviceCtxKey).(*string)
if !ok {
panic(errors.New("Invalid config context"))
}
return *raw
}