riteshghorse commented on a change in pull request #15952:
URL: https://github.com/apache/beam/pull/15952#discussion_r748373269
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File path: sdks/go/pkg/beam/core/graph/window/trigger/trigger.go
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@@ -138,49 +143,114 @@ func (tr Trigger) AlignedTo(period time.Duration, offset
time.Time) Trigger {
// TODO: Change to call UnixMilli() once we move to only
supporting a go version > 1.17.
offsetMillis = offset.Unix()*1e3 +
int64(offset.Nanosecond())/1e6
}
- tr.TimestampTransforms = append(tr.TimestampTransforms,
AlignToTransform{
+ tr.timestampTransforms = append(tr.timestampTransforms,
AlignToTransform{
Period: int64(period / time.Millisecond),
Offset: offsetMillis,
})
return tr
}
+// RepeatTrigger fires a sub-trigger repeatedly.
+type RepeatTrigger struct {
+ subTrigger Trigger
+}
+
+func (t RepeatTrigger) trigger() {}
+
+// SubTrigger returns the trigger to be repeated.
+func (t *RepeatTrigger) SubTrigger() Trigger {
+ return t.subTrigger
+}
+
// Repeat constructs a trigger that fires a trigger repeatedly
// once the condition has been met.
//
// Ex: trigger.Repeat(trigger.AfterCount(1)) is same as trigger.Always().
func Repeat(tr Trigger) Trigger {
Review comment:
We don't know the type of trigger set by the user in this case.
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