Add opt-in anonymous stats reporting (#2249)

* Initial phone home stats queries

* Add userAgent to UpdateDeviceLastSeen
Add new Table for tracking daily user vists

* Add user_daily_visits table

* Fix queries

* userapi stats tables & queries

* userapi interface and internal api

* sycnapi stats queries

* testing phone home stats

* Add complete config to syncapi

* add missing files

* Fix queries

* Send empty request

* Add version & monolith stats

* Add configuration for phone home stats

* Move WASM to its own file, add config and comments

* Add tracing methods

* Add total rooms

* Add more fields, actually send data somewhere

* Move stats to the userapi

* Move phone home stats to util package

* Cleanup

* Linter & parts of GH comments

* More GH comments changes
- Move comments to SQL statements
- Shrink interface, add struct for stats
- No fatal errors, use defaults

* Be more explicit when querying

* Fix wrong calculation & wrong query params
Add tests

* Add Windows stats

* ADd build constraint

* Use new testing structure
Fix issues with getting values when using SQLite
Fix wrong AddDate value
Export UpdateUserDailyVisits

* Fix query params

* Fix test

* Add comment about countR30UsersSQL and countR30UsersV2SQL; fix test

* Update config

* Also update example config file

* Use OS level proxy, update logging

Co-authored-by: kegsay <kegan@matrix.org>

dendrite-config.yaml

@@ -85,6 +85,15 @@ global:
     # Whether outbound presence events are allowed, e.g. sending presence events to other servers
     enable_outbound: false
 
+  # Configures opt-in anonymous stats reporting.
+  report_stats:
+    # Whether this instance sends anonymous usage stats
+    enabled: false
+
+    # The endpoint to report the anonymized homeserver usage statistics to.
+    # Defaults to https://matrix.org/report-usage-stats/push
+    endpoint: https://matrix.org/report-usage-stats/push
+
   # Server notices allows server admins to send messages to all users.
   server_notices:
     enabled: false