ENT-14416, CFE-4709: Retry on transient errors and fallback to cached releases.json - #198
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- Added retries on transient HTTP errors
- Now uses cached release data when cfengine.com is unavailable
A 502 from https://cfengine.com/release-data/enterprise/releases.json made cf-remote fail the whole command. Requests failing with 408, 429 or a 5xx status are now retried three times, doubling the delay between each attempt. Ticket: ENT-14416 Signed-off-by: Lars Erik Wik <lars.erik.wik@northern.tech>
Release data cached less than an hour ago is used without contacting the server at all. Older data is used as a fallback when the request fails with a transient error, since stale release data beats no release data. The cache is now named after the whole path of the URL. The basename alone was not unique, enterprise and community both have a releases.json. Ticket: CFE-4709 Signed-off-by: Lars Erik Wik <lars.erik.wik@northern.tech>
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