hotshot_task_impls::helpers

Struct LeafChainTraversalOutcome

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pub struct LeafChainTraversalOutcome<TYPES: NodeType> {
    pub new_locked_view_number: Option<TYPES::View>,
    pub new_decided_view_number: Option<TYPES::View>,
    pub committing_qc: Option<QuorumCertificate2<TYPES>>,
    pub deciding_qc: Option<QuorumCertificate2<TYPES>>,
    pub leaf_views: Vec<LeafInfo<TYPES>>,
    pub included_txns: Option<HashSet<Commitment<<TYPES as NodeType>::Transaction>>>,
    pub decided_upgrade_cert: Option<UpgradeCertificate<TYPES>>,
}
Expand description

Helper type to give names and to the output values of the leaf chain traversal operation.

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§new_locked_view_number: Option<TYPES::View>

The new locked view obtained from a 2 chain starting from the proposal’s parent.

§new_decided_view_number: Option<TYPES::View>

The new decided view obtained from a 3 chain starting from the proposal’s parent.

§committing_qc: Option<QuorumCertificate2<TYPES>>

The QC signing the new leaf, causing it to become committed.

§deciding_qc: Option<QuorumCertificate2<TYPES>>

A second QC extending the committing QC, causing the new leaf chain to become decided.

This is only applicable in HotStuff2, and will be None prior to HotShot version 0.3. HotStuff1 (HotShot < 0.3) uses a different commit rule, which is not captured in this type.

§leaf_views: Vec<LeafInfo<TYPES>>

The decided leaves with corresponding validated state and VID info.

§included_txns: Option<HashSet<Commitment<<TYPES as NodeType>::Transaction>>>

The transactions in the block payload for each leaf.

§decided_upgrade_cert: Option<UpgradeCertificate<TYPES>>

The most recent upgrade certificate from one of the leaves.

Trait Implementations§

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impl<TYPES: Debug + NodeType> Debug for LeafChainTraversalOutcome<TYPES>
where TYPES::View: Debug,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<TYPES: NodeType + Default> Default for LeafChainTraversalOutcome<TYPES>

We need Default to be implemented because the leaf ascension has very few failure branches, and when they do happen, we still return intermediate states. Default makes the burden of filling values easier.

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fn default() -> Self

The default method for this type is to set all of the returned values to None.

Auto Trait Implementations§

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impl<TYPES> Freeze for LeafChainTraversalOutcome<TYPES>
where <TYPES as NodeType>::View: Freeze, <<TYPES as NodeType>::SignatureKey as SignatureKey>::QcType: Freeze, <TYPES as NodeType>::Epoch: Freeze,

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impl<TYPES> RefUnwindSafe for LeafChainTraversalOutcome<TYPES>
where <TYPES as NodeType>::View: RefUnwindSafe, <<TYPES as NodeType>::SignatureKey as SignatureKey>::QcType: RefUnwindSafe, <TYPES as NodeType>::Epoch: RefUnwindSafe, TYPES: RefUnwindSafe, <TYPES as NodeType>::BlockHeader: RefUnwindSafe, <TYPES as NodeType>::BlockPayload: RefUnwindSafe, <TYPES as NodeType>::ValidatedState: RefUnwindSafe, <TYPES as NodeType>::SignatureKey: RefUnwindSafe, <<TYPES as NodeType>::ValidatedState as ValidatedState<TYPES>>::Delta: RefUnwindSafe, <TYPES as NodeType>::StateSignatureKey: RefUnwindSafe, <<TYPES as NodeType>::StateSignatureKey as StateSignatureKey>::StateSignature: RefUnwindSafe,

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impl<TYPES> Send for LeafChainTraversalOutcome<TYPES>

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impl<TYPES> Sync for LeafChainTraversalOutcome<TYPES>

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impl<TYPES> Unpin for LeafChainTraversalOutcome<TYPES>
where <TYPES as NodeType>::View: Unpin, <<TYPES as NodeType>::SignatureKey as SignatureKey>::QcType: Unpin, <TYPES as NodeType>::Epoch: Unpin, TYPES: Unpin, <TYPES as NodeType>::BlockHeader: Unpin, <TYPES as NodeType>::BlockPayload: Unpin, <TYPES as NodeType>::SignatureKey: Unpin, <TYPES as NodeType>::StateSignatureKey: Unpin, <<TYPES as NodeType>::StateSignatureKey as StateSignatureKey>::StateSignature: Unpin,

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impl<TYPES> UnwindSafe for LeafChainTraversalOutcome<TYPES>
where <TYPES as NodeType>::View: UnwindSafe, <<TYPES as NodeType>::SignatureKey as SignatureKey>::QcType: UnwindSafe, <TYPES as NodeType>::Epoch: UnwindSafe, TYPES: UnwindSafe, <TYPES as NodeType>::BlockHeader: UnwindSafe, <TYPES as NodeType>::ValidatedState: RefUnwindSafe, <TYPES as NodeType>::BlockPayload: UnwindSafe, <<TYPES as NodeType>::ValidatedState as ValidatedState<TYPES>>::Delta: RefUnwindSafe, <TYPES as NodeType>::SignatureKey: UnwindSafe, <TYPES as NodeType>::StateSignatureKey: UnwindSafe, <<TYPES as NodeType>::StateSignatureKey as StateSignatureKey>::StateSignature: UnwindSafe,

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