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Replay

commonware_storage::journal::segmented::variable

Struct Replay 

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pub struct Replay<E: Storage + Metrics, V: Codec> { /* private fields */ }
Expand description

Owned replay reader over a Journal’s items.

Yields (section, offset, size, item) in order and repairs invalid trailing data as it is encountered. Dropping the reader before it is exhausted destroys the journal (leaving later sections unrepaired): recovery is re-initialization. Call Replay::finish on an exhausted reader to get the journal back.

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impl<E: Storage + Metrics, V: CodecShared> Replay<E, V>

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pub async fn next(&mut self) -> Option<Result<(u64, u64, u32, V), Error>>

Returns the next (section, offset, size, item), or None once every section is exhausted.

An error ends the section that produced it, and iteration continues with the next section. Errors while mutating storage to repair a section, and Error::ReplayInterrupted, end the replay.

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pub fn finish(self) -> Result<Journal<E, V>, Error>

Returns the journal.

Fails when the reader was not fully drained or yielded an error: the journal is destroyed and recovery is re-initialization.

Auto Trait Implementations§

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impl<E, V> !RefUnwindSafe for Replay<E, V>

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impl<E, V> !UnwindSafe for Replay<E, V>

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impl<E, V> Freeze for Replay<E, V>
where Journal<E, V>: Freeze, VecDeque<SectionReplay<<E as Storage>::Blob>>: Freeze,

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impl<E, V> Send for Replay<E, V>
where Journal<E, V>: Send, VecDeque<SectionReplay<<E as Storage>::Blob>>: Send,

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impl<E, V> Sync for Replay<E, V>
where Journal<E, V>: Sync, VecDeque<SectionReplay<<E as Storage>::Blob>>: Sync,

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impl<E, V> Unpin for Replay<E, V>
where Journal<E, V>: Unpin, VecDeque<SectionReplay<<E as Storage>::Blob>>: Unpin,

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impl<E, V> UnsafeUnpin for Replay<E, V>
where Journal<E, V>: UnsafeUnpin, VecDeque<SectionReplay<<E as Storage>::Blob>>: UnsafeUnpin,

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