Future Proof Relay

[tobias-wilfert]

The general idea is to future-proof Really by updating the Actors to:

• Work with the standard Futures instead of the former futures crate.
• No longer work with actix internally.
• Refer to Actors as Services.

General Refactor:

• build(futures): Swap package names for futures 0.1 and 0.3 #1362
• feat(actix): Generic Addr type #1405
  • ref(actix): Update Store Actor [INGEST-1565] #1415
• feat(actix): New Register [INGEST-1494] #1421
• ref(actix): Update service and associated traits #1457 (gist)
• ref(system): Prefer biased select in service loops #1495
• Fix uses SleepHandle with redundant reset() (requires ref(actix): Migrate the RelayCache actor #1485)
• ref(metrics): Remove long running futures #1492
• ref(system): Make the main runtime multi-threaded #1498
• Fix tests depending on broken SystemRegistry behavior #1610
• Define names for all runtimes #1611
• Panic handling in services #1613
• Remove all actix-related helper utilities #1614
• ref(system): Add helper to start services in runtimes #1458

Actor Migration:

• ref(actix): Update Healthcheck Actor [INGEST-1481] #1349
  • ref(actix): Update Healthcheck service to work with an internal channel #1377
• ref(actix): Update Store Actor  #1397
• ref(actix): Update the Outcome services #1441
• ref(actix): Port EnvelopeProcessor to tokio [INGEST-1566 INC-202] #1470
• ref(actix): Migrate the EnvelopeManager actor #1479
• ref(actix): Migrate the RelayCache actor #1485
• ref(actix): Migrate the AwsExtension to tokio #1497
• Update Upstream Actor #1605
• Update ProjectUpstream Actor #1607
• Update ProjectCache Actor #1602
• Update ProjectLocal Actor #1603
• Update ProjectRedis Actor #1604
• Update Server Actor #1606
• Fix broken shutdown test #1608
• ref(actix): Migrate Aggregator actor to new tokio runtime [INGEST-1645] #1508

Note: this list is neither complete nor definitive and might be subject to change.

[jan-auer]

Let's close this, this is now being tracked in this milestone:
https://github.com/getsentry/relay/milestone/2