fix(spooler): Fix datetime comparison #4025
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iambriccardo
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iambriccardo
commented
Sep 11, 2024
| // return deleted rows in a specific order. | ||
| extracted_envelopes.sort_by_key(|a| a.received_at()); | ||
| extracted_envelopes.sort_by_key(|a| { | ||
| Reverse(UnixTimestamp::from_datetime(a.received_at()).unwrap_or(UnixTimestamp::now())) |
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I forgot to return the dates in reverse sorted order to honor the API. This is now fixed, the envelopes are returning in descending timestamp order.
iambriccardo
commented
Sep 11, 2024
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| // We check that if we load more than the limit, we still get back at most 10. | ||
| // We check that if we load 5, we get the newest 5. | ||
| let extracted_envelopes = envelope_store |
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Fixed and improved this test.
jjbayer
reviewed
Sep 11, 2024
| // Since the store returns the envelopes sorted in descending order, we want to put them | ||
| // in reverse into the vector in the buffer, because we want to pop the last element always, | ||
| // which has to be the newest (aka with the biggest timestamp). | ||
| envelopes.reverse(); |
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Why do we reverse twice, once here and once in delete_many?
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It's explained in the comment above, I wanted to return descending values from the store but when concatenating in the buffer, we pop from the bottom (which we assume has the newest timestamp).
jjbayer
approved these changes
Sep 11, 2024
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This PR uses
UnixTimestampinstead ofDateTimeto compare timestamps when sorting data from disk.This fixes an issue that raised the following panic (https://doc.rust-lang.org/src/core/slice/sort/shared/smallsort.rs.html#862) which caused the envelope buffer service to crash and stop handling envelopes.
ref: rust-lang/rust#129561