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mimblewimble / grin

Minimal implementation of the Mimblewimble protocol.
https://grin.mw/
Apache License 2.0
5.04k stars 989 forks source link

ApiServer should shutdown gracefully #3649

Closed snape479 closed 2 years ago

snape479 commented 3 years ago

Previously, 'with_graceful_shutdown' was added to allow the ApiServer to shutdown gracefully here:

https://github.com/mimblewimble/grin/commit/4a09fed36ca8f2b9f3ccd2e1c518e777a4c1da6a

However, it had to be reverted due to the fact that the 'rx' was being dropped at the end of the code block and a 'cancel' error occurred right away. The solution to this problem is to store the (tx, rx) on the heap using Box and moving them to the startup routines in src/bin/grin.rs. Additionally, a monitor thread is needed to call stop when the StopState indicates the server stopped.

I have implemented this in bitcoinmw here:

https://github.com/bitcoinmw/bitcoinmw/commit/2f25ec2a5d2c6b7cf646e25f4f18858e68702473

I was going to do a pull request to Grin, but my repo had some merge issues (due to verifier_cache). If someone could copy these changes from BMW over to Grin that would be great. Opening this issue to track.

phyro commented 2 years ago

I believe this is now resolved. Thanks for the issue and the fix.