25 lines
447 B
Go
25 lines
447 B
Go
package meter
|
|
|
|
import (
|
|
"context"
|
|
)
|
|
|
|
type meterKey struct{}
|
|
|
|
// FromContext get meter from context
|
|
func FromContext(ctx context.Context) (Meter, bool) {
|
|
if ctx == nil {
|
|
return nil, false
|
|
}
|
|
c, ok := ctx.Value(meterKey{}).(Meter)
|
|
return c, ok
|
|
}
|
|
|
|
// NewContext put meter in context
|
|
func NewContext(ctx context.Context, c Meter) context.Context {
|
|
if ctx == nil {
|
|
ctx = context.Background()
|
|
}
|
|
return context.WithValue(ctx, meterKey{}, c)
|
|
}
|