Function waitForFileAndRead

integration/nri_test.go:1322–1343

helper functions Wait for a file to show up in the filesystem then read its content.

(path string, timeout time.Duration)

// Wait for a file to show up in the filesystem then read its content.
func waitForFileAndRead(path string, timeout time.Duration) ([]byte, error) {
	var (
		deadline = time.After(timeout)
		slack    = 100 * time.Millisecond
	)

WAIT:
	for {
		if _, err := os.Stat(path); err == nil {
			break WAIT
		}
		select {
		case <-deadline:
			return nil, fmt.Errorf("waiting for %s timed out", path)
		default:
			time.Sleep(slack)
		}
	}

	time.Sleep(slack)
	return os.ReadFile(path)
}

// getAvailableCpuset returns the set of online CPUs.
func getAvailableCpuset(t *testing.T) []string {