micro/registry/context.go
Vasiliy Tolstov c6fd9c1c23 add context helpers
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
2020-12-07 16:10:20 +03:00

27 lines
562 B
Go

package registry
import (
"context"
)
type registryKey struct{}
func FromContext(ctx context.Context) (Registry, bool) {
c, ok := ctx.Value(registryKey{}).(Registry)
return c, ok
}
func NewContext(ctx context.Context, c Registry) context.Context {
return context.WithValue(ctx, registryKey{}, c)
}
// 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)
}
}