go.temporal.io/server/common/contextutil/deadline.go
39 LOC · 15 covered · 24 uncovered · 7 ranges · 370 concepts · 6 introducers · 229 tests
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package contextutil
import (
"context"
"time"
)
var noop = func() {}
// WithDeadlineBuffer returns a child context with a deadline that ensures that at least buffer
// amount of time remains after the child deadline expires and before the parent deadline expires.
// The returned context timeout is therefore <= the requested timeout. If the parent deadline itself
// does not allow buffer amount of time, then the returned context deadline expires immediately. Use
// this method to create child context when the child cannot use all of parent's deadline but
// instead there is a need to leave some time for parent to do some post-work.
func WithDeadlineBuffer(
parent context.Context,
timeout time.Duration,
buffer time.Duration,
if parent.Err() != nil {
}
if !parentHasDeadline {
// No parent deadline, so buffer is available to parent after child deadline expiry.
deadline.go ×1
return context.WithTimeout(parent, timeout)
}
// If parent deadline itself does not allow buffer then set child timeout to zero. Otherwise
// compute child deadline such that at least buffer remains after it and before parent deadline.
if remaining < timeout {
}
}