When re-syncing device lists reset the state
We keep track of what stream IDs we've seen so that we know what updates we've handled or missed. If we re-sync we don't know if the updates we've seen are included in the re-sync (there may be a race), so we should reset the seen updates.
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@ -566,6 +566,10 @@ class DeviceListEduUpdater(object):
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device_ids = [device["device_id"] for device in devices]
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device_ids = [device["device_id"] for device in devices]
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yield self.device_handler.notify_device_update(user_id, device_ids)
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yield self.device_handler.notify_device_update(user_id, device_ids)
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# We clobber the seen updates since we've re-synced from a given
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# point.
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self._seen_updates[user_id] = set([stream_id])
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else:
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else:
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# Simply update the single device, since we know that is the only
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# Simply update the single device, since we know that is the only
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# change (because of the single prev_id matching the current cache)
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# change (because of the single prev_id matching the current cache)
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