Async KV Store #3778
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Async KV Store #3778
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👋 Hi! I see this is a draft PR. |
joostjager
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joostjager
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May 15, 2025
lightning/src/util/async_persist.rs
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| Poll::Pending => { | ||
| println!("Future not ready, using tokio runtime"); | ||
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| self.runtime.spawn(async move { |
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This doesn't need to be tokio, it could be a generic spawn method too of course.
joostjager
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May 15, 2025
lightning/src/util/async_persist.rs
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| match fut.as_mut().poll(&mut cx) { | ||
| Poll::Ready(_) => { | ||
| UpdateStatus::Completed |
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This initiates the stable persistence flow in LDK.
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This was referenced Jun 2, 2025
joostjager
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Jun 3, 2025
lightning/src/util/persist.rs
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| @@ -134,9 +136,9 @@ pub trait KVStore { | |||
| /// | |||
| /// Will create the given `primary_namespace` and `secondary_namespace` if not already present | |||
| /// in the store. | |||
| fn write( | |||
| fn write_async( | |||
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Reminder: document that these calls, even though they are async, need to complete in the order in which they are initiated.
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Jun 10, 2025
| let mut cx = Context::from_waker(&waker); | ||
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| match fut.as_mut().poll(&mut cx) { | ||
| Poll::Ready(Ok(())) => Ok(true), |
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Reminder - can't simply conclude here that we are in sync mode. An async implementation may also sometimes be ready immediately?
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Prepare for adding runtime state while avoiding the _unused serialization macro config.
To prepare for an async kv store trait that must be awaited, this commit moves the kv store calls from the chain notification handlers to the background process. It uses a dirty flag to communicate that there is something to persist. The block height is part of the persisted data. If that data does not make it to disk, the chain notifications are replayed after restart.
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Draft PR for discussion on approach
Relates to #1470