micro/server/context.go
Vasiliy Tolstov 4c4fa00a5d add useful func
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
2020-09-22 13:33:57 +03:00

37 lines
844 B
Go

package server
import (
"context"
)
type serverKey struct{}
func FromContext(ctx context.Context) (Server, bool) {
c, ok := ctx.Value(serverKey{}).(Server)
return c, ok
}
func NewContext(ctx context.Context, s Server) context.Context {
return context.WithValue(ctx, serverKey{}, s)
}
// Setoption returns a function to setup a context with given value
func SetOption(k, v interface{}) Option {
return func(o *Options) {
if o.Context == nil {
o.Context = context.Background()
}
o.Context = context.WithValue(o.Context, k, v)
}
}
// SetSubscriberOption returns a function to setup a context with given value
func SetSubscriberOption(k, v interface{}) SubscriberOption {
return func(o *SubscriberOptions) {
if o.Context == nil {
o.Context = context.Background()
}
o.Context = context.WithValue(o.Context, k, v)
}
}