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Properly terminate database connection in omdb #7290

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@jmpesp jmpesp commented Dec 20, 2024

Otherwise attempting to do an action that requires a DestructionToken will cause a panic, as it returns from run_cmd before calling terminate on the datastore.

Otherwise attempting to do an action that requires a DestructionToken
will cause a panic, as it returns from `run_cmd` before calling
terminate on the datastore.
@jmpesp jmpesp requested a review from davepacheco December 20, 2024 17:30
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Looks good to me, though I commented on some smallish style suggestions.

pub(crate) async fn run_cmd(
&self,
omdb: &Omdb,
log: &slog::Logger,
) -> Result<(), anyhow::Error> {
let datastore = self.db_url_opts.connect(omdb, log).await?;
let res = self.run_cmd_inner(&datastore, omdb, log).await;
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Take it or leave it: we might want to define run_cmd_inner as a function within the scope of run_cmd, as that will prevent it from being called outside run_cmd, even by other code within this module (which making it module-private doesn't achieve). This might be worth doing if we want to be extra certain that nobody accidentally does the wrong thing.

See this playground demonstrating what I mean.

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Alternatively, run_cmd_inner could just be an async block within run_cmd that we immediately .await, as early returns in the async block won't return from the outer function, just the async block (example). That way, we don't need to have a whole other function for it. Up to you if you think that's nicer...

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2 participants