[#149] selector: Add read timeout

If there are no objects for 10 second, then return nil.
It is required to prevent VU iteration hang if there
are no objects pushed to registry.

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
This commit is contained in:
Dmitrii Stepanov 2024-06-24 13:59:12 +03:00
parent e7d4dd404a
commit 335c45c578

View file

@ -9,6 +9,8 @@ import (
"go.etcd.io/bbolt" "go.etcd.io/bbolt"
) )
const nextObjectTimeout = 10 * time.Second
type ObjFilter struct { type ObjFilter struct {
Status string Status string
Age int Age int
@ -57,7 +59,16 @@ func NewObjSelector(registry *ObjRegistry, selectionSize int, kind SelectorKind,
// - underlying registry context is done, nil objects will be returned on the // - underlying registry context is done, nil objects will be returned on the
// currently blocked and every further NextObject calls. // currently blocked and every further NextObject calls.
func (o *ObjSelector) NextObject() *ObjectInfo { func (o *ObjSelector) NextObject() *ObjectInfo {
if o.kind == SelectorOneshot {
return <-o.objChan return <-o.objChan
}
select {
case <-time.After(nextObjectTimeout):
return nil
case obj := <-o.objChan:
return obj
}
} }
// Count returns total number of objects that match filter of the selector. // Count returns total number of objects that match filter of the selector.