DefaultStr returns the first non-empty string.

LabelToMap expects label string to be a comma separated list of key and value pairs delimited by equals.

NewTarball returns an initialized Tarball.

Retry retries f every interval until after maxRetries.

This is similar to Retry(), but it will not fail immediately on errors, and if the retries are exhausted and f() still failing, it will return f()'s error.

RetryErrorWithContext will retry as long the checked function is returning an error and the context does not time out.

RetryWithContext retries f every interval until the specified context times out.