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Handle 'left' users in the deviceList mananagement

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When we no longer share any rooms with a given user, the server will stop
sending us updates on their device list, and will (once synapse is updated)
send us a notification of that fact via the 'left' field in the device_lists
field in /sync, or the response from /keys/changes.
This commit is contained in:
Richard van der Hoff
2017-09-08 15:35:47 +01:00
parent ae8fc64394
commit 1a55f550c0
5 changed files with 221 additions and 30 deletions
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47
src/crypto/DeviceList.js
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@@ -26,8 +26,30 @@ import Promise from 'bluebird';
import DeviceInfo from './deviceinfo';
import olmlib from './olmlib';
/* State transition diagram for DeviceList._deviceTrackingStatus
*
* |
* stopTrackingDeviceList V
* +---------------------> NOT_TRACKED
* | |
* +<--------------------+ | startTrackingDeviceList
* | | V
* | +-------------> PENDING_DOWNLOAD <--------------------+-+
* | | ^ | | |
* | | restart download | | start download | | invalidateUserDeviceList
* | | client failed | | | |
* | | | V | |
* | +------------ DOWNLOAD_IN_PROGRESS -------------------+ |
* | | | |
* +<-------------------+ | download successful |
* ^ V |
* +----------------------- UP_TO_DATE ------------------------+
*/
// constants for DeviceList._deviceTrackingStatus
// const TRACKING_STATUS_NOT_TRACKED = 0;
const TRACKING_STATUS_NOT_TRACKED = 0;
const TRACKING_STATUS_PENDING_DOWNLOAD = 1;
const TRACKING_STATUS_DOWNLOAD_IN_PROGRESS = 2;
const TRACKING_STATUS_UP_TO_DATE = 3;
@@ -236,6 +258,26 @@ export default class DeviceList {
// refreshOutdatedDeviceLists.
}
/**
* Mark the given user as no longer being tracked for device-list updates.
*
* This won't affect any in-progress downloads, which will still go on to
* complete; it will just mean that we don't think that we have an up-to-date
* list for future calls to downloadKeys.
*
* @param {String} userId
*/
stopTrackingDeviceList(userId) {
if (this._deviceTrackingStatus[userId]) {
console.log('No longer tracking device list for ' + userId);
this._deviceTrackingStatus[userId] = TRACKING_STATUS_NOT_TRACKED;
}
// we don't yet persist the tracking status, since there may be a lot
// of calls; instead we wait for the forthcoming
// refreshOutdatedDeviceLists.
}
/**
* Mark the cached device list for the given user outdated.
*
@@ -283,9 +325,6 @@ export default class DeviceList {
usersToDownload.push(userId);
}
}
if (usersToDownload.length == 0) {
return;
}
// we didn't persist the tracking status during
// invalidateUserDeviceList, so do it now.