Depending on the number of users in the request, the server might
overload. To prevent this, the download is broken into chunks of
250 users each. Additionally, no more than 3 requests are kicked off
at the same time to avoid running into rate limiting. Responses are
processed once all chunks have been downloaded.
Fixes: #1619
Signed-off-by: Johannes Marbach <n0-0ne+github@mailbox.org>
The earlier commit, d3ce0cb82f, has most of the juicy details on this. In addition to d3ce's changes, we also:
* Use `TestClient` in many integration tests due to subtle behaviour changes in imports when switching to ES6. Namely the behaviour where setting the request function is less reliable in the way we did it, but `TestClient` is very reliable.
* We now use the Olm loader more often to avoid having to maintain so much duplicate code. This makes the imports slightly easier to read.
The code to migrate from the `sessionStore` to `cryptoStore` originally appeared
in https://github.com/matrix-org/matrix-js-sdk/pull/584 (2017-12-06). At this
point, it seems safe to assume most sessions that need migrating have already
done so. Removing this code simplifies store handling and removes the
`sessionStore` from most places in JS SDK.
