This commit does two related things:
* We make the poll interval a random time between 0.5 and 1.5 times the configured interval.
* We introduce the BALENA_SUPERVISOR_INSTANT_UPDATE_TRIGGER configuration variable, that defaults to true. If this variable is set
to false, then calls to /v1/update are ignored, and on startup the supervisor waits for a poll interval before getting the target state.
This will help especially on cases where there's a large number of devices on a single network. By disabling instant updates and setting a large
poll interval, we can now achieve a sitation where not all devices apply an update at the same time, which can help avoid
overwhelming the network.
Change-type: minor
Signed-off-by: Pablo Carranza Velez <pablo@balena.io>
We define the type for each config value, and validate the data when
retrieving and setting it.
Change-type: minor
Signed-off-by: Cameron Diver <cameron@balena.io>
They will take precedence over any existing RESIN_ variables. We strip both namespaces now
whenever we get the target values.
This also fixes preloading with a legacy config (the interface to get the config keys from
the legacy apps.json was broken).
Change-type: minor
Signed-off-by: Pablo Carranza Velez <pablo@balena.io>
Stability improvements;
* Printing of unsupported compose fields
* Added a lot of tests
* All compose configuration has a default value, enabling better
comparison
Change-type: minor
Signed-off-by: Cameron Diver <cameron@resin.io>
Resin’s delta server supports Balena deltas as version 3 deltas. This commit adds support for triggering delta generation for Balena deltas, and applying them locally to the device via a simple pull.
The delta version to use when updating has been abstracted away as an env var that is user-defined. The default value is still instructing use of rsync deltas (v2).
Change-Type: minor
We add a bunch of additional unit tests, and also a coverage report using istanbul.
The tests are not meant to cover everything, but they're a first attempt at having *some* unit testing
on the supervisor. There's much to improve but hopefully it helps catch obvious errors.
Change-Type: patch
Signed-off-by: Pablo Carranza Velez <pablo@resin.io>
