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2 commits

Author SHA1 Message Date
Michael Holloway ce7a46f7ed Add push notifier
Provides a basic push notifier implementation. Since the push service is
not yet in place, all it does for now is log debug output when a
notification is to be sent.

To register the push notifier, add the following configuration to
LocalSettings.php:

 $wgEchoNotifiers['push'] = [ 'EchoPush\\PushNotifier', 'notifyWithPush' ];
 $wgDefaultNotifyTypeAvailability['push'] = true;
 $wgNotifyTypeAvailabilityByCategory['system']['push'] = false;
 $wgNotifyTypeAvailabilityByCategory['system-noemail']['push'] = false;

We'll register the notifier in configuration for now, rather than
hard-coding the default in extension.json, in order to have control over
when and where it rolls out (beta vs. prod, as well as which wikis).

Since the push notifier implementation depends on jobs being processed
by the job queue, I also recommend adding the following configuration
setting to ensure that all pending jobs are processed at the end of each
web request:

 // ensure all pending jobs are processed when a web request completes
 $wgJobRunRate = PHP_INT_MAX;

Bug: T252899
Change-Id: Ie7f222443045d30620ff297b006104ef18a074a8
2020-06-02 13:40:04 -04:00
Michael Holloway a3674974f1 Add push subscription management
Adds DB tables for storing push subscriptions, some DB interaction code
for retrieving them within MediaWiki, and a set of API modules for
managing them from the outside world.

When testing this patch, be sure to run maintenance/update.php to create
the new tables, and set $wgEchoEnablePush = true in LocalSettings.php
to enable the API new API module.

N.B. The current DB schema is centered on app push subscriptions. Web
push subscriptions require slightly different handling, since they are
provided by browsers as a JSON blob rather than a token string. How to
handle web push subscriptions is a question we can defer until the time
comes to add web push support.

Subscription data is stored in the echo_push_subscription table, with
provider names normalized into the echo_push_provider table. We expect to
be looking up subscriptions by central user ID, so that column is indexed.
The subscription data also includes a column to store SHA256 digests of
the subscriber tokens. This is for use as a unique key constraint, since
we expect every push token to be univerally unique, and the token values
themselves may be too large to reasonably index in MySQL.

Bug: T252899
Change-Id: I3928761b3fba12e54ff4850e9a05c68ec7772f62
2020-06-02 13:40:00 -04:00