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Break long poll loop early when context remaining timeout is too low #1123

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Break long poll loop early when context remaining timeout is too low #1123

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ab3d43f
Break long poll loop early when context remaining timeout is too low
vytautas-karpavicius Aug 26, 2021
58c5f95
Merge branch 'master' into get-workflow-history-context-done
vytautas-karpavicius Aug 31, 2021
5d3ea6f
Merge branch 'master' into get-workflow-history-context-done
meiliang86 Sep 30, 2021
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10 changes: 10 additions & 0 deletions internal/internal_workflow_client.go
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,7 @@ var _ DomainClient = (*domainClient)(nil)
const (
defaultDecisionTaskTimeoutInSecs = 10
defaultGetHistoryTimeoutInSecs = 25
minLongPollInterval = 100 * time.Millisecond
)

var (
Expand Down Expand Up @@ -512,6 +513,15 @@ func (wc *workflowClient) GetWorkflowHistory(
var err error
Loop:
for {
// Stop polling the server if the remaining context timeout is too low.
// This prevents unnessesary final call which will result in a timeout anyway.
if deadline, ok := ctx.Deadline(); ok {
remainingTime := deadline.Sub(time.Now())
if remainingTime < minLongPollInterval {
return nil, context.DeadlineExceeded
}
}

err = backoff.Retry(ctx,
func() error {
var err1 error
Expand Down