Skip to content

Latest commit

 

History

History
34 lines (28 loc) · 1.64 KB

TODO.md

File metadata and controls

34 lines (28 loc) · 1.64 KB
Raw

Checklist for things that can wait, but need to eventually be done:

Raw connections and streams

  • Add WaitReadClosed and WaitBothClosed to streams
    • Solved differently (ReadClosed, WriteClosed, Closed)
  • Add Shutdown to raw connections
    • Stop accepting new streams and close them with ESHUTDOWN
    • Wait until currently accepted streams are closed

Copper server functionality

  • Optimize subscription updates
    • Endpoints sorted by priority
  • Random selection proportional to concurrency
  • Queue should WaitBothClosed and remove cancelled requests
    • Not sure if should support one-way requests (send a blob, close the stream, don't expect any reply), since quickly become closed (but such requests have no way of knowing if they failed, so probably ok to try them exactly once and give up)
  • Upstream read/write detection in passthru
    • Retries for endpoints when nothing was actually exchanged (except a well-known error code)
  • Fine-grained locking in the server
    • Giant sync.Mutex is bad for unrelated streams, should try to replace with sync.RWMutex and only lock when need to change things
    • Use locks per-subscription, per-publication, etc.
  • Auto-reconnecting Client implementation
    • Automatic re-subscribing on reconnect
    • Automatic re-publishing on reconnect
  • Graceful shutdown for clients (unpublish, wait until drained)
  • Streaming for endpoint updates
  • Authentication and authorization
  • Publishing raw tcp services

Copper daemon functionality

  • Configuration changes (peers) without restarting
  • Configuration in zookeeper with change auto-detection