Make shutdown procedure more robust #592
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Previously, we had to configure enormous syncing timeouts as the BDK wallet syncing would hold a central mutex that could lead to large parts of event handling and syncing locking up. Here, we drop the configured timeouts considerably across the board, since such huge values are hopefully not required anymore.
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wpaulino
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src/lib.rs
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| @@ -670,6 +667,17 @@ impl Node { | |||
| // Disconnect all peers. | |||
| self.peer_manager.disconnect_all_peers(); | |||
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| // Ensure we process the broadcast queue one last time, as we may have generated | |||
| // force-closures during peer disconnection. | |||
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If we're force closing due to a disconnection, then we never broadcast the funding transaction to begin with, so we shouldn't need to broadcast a commitment transaction. I assume the behavior you were seeing will end up getting fixed by lightningdevkit/rust-lightning#3881.
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Ah, okay. I expected this but wasn't sure if we could lean on it. Will drop the commit then.
Previously, we used to a channel to indicate that the background processor task has been stopped. Here, we rather just await the task's `JoinHandle` which is more robust in that it avoids a race condition.
.. we provide finer-grained logging after each step of `stop`.
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wpaulino
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These are a few improvements to our shutdown logic. Most notably, we now switch our 'shutdown' signal for the background event processor from using channels to just keeping the
JoinHandle, which also gets rid of a potential race condition. Moreover, we attempt to clear the broadcast queue one last time before we shut down.