pub struct Consensus<TYPES: NodeType> {
    validated_state_map: BTreeMap<TYPES::Time, View<TYPES>>,
    vid_shares: VidShares<TYPES>,
    saved_da_certs: HashMap<TYPES::Time, DaCertificate<TYPES>>,
    cur_view: TYPES::Time,
    last_proposals: BTreeMap<TYPES::Time, Proposal<TYPES, QuorumProposal<TYPES>>>,
    last_decided_view: TYPES::Time,
    locked_view: TYPES::Time,
    saved_leaves: CommitmentMap<Leaf<TYPES>>,
    saved_payloads: BTreeMap<TYPES::Time, Arc<[u8]>>,
    high_qc: QuorumCertificate<TYPES>,
    pub metrics: Arc<ConsensusMetricsValue>,
}
Expand description

A reference to the consensus algorithm

This will contain the state of all rounds.

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§validated_state_map: BTreeMap<TYPES::Time, View<TYPES>>

The validated states that are currently loaded in memory.

§vid_shares: VidShares<TYPES>

All the VID shares we’ve received for current and future views.

§saved_da_certs: HashMap<TYPES::Time, DaCertificate<TYPES>>

All the DA certs we’ve received for current and future views. view -> DA cert

§cur_view: TYPES::Time

View number that is currently on.

§last_proposals: BTreeMap<TYPES::Time, Proposal<TYPES, QuorumProposal<TYPES>>>

Last proposals we sent out, None if we haven’t proposed yet. Prevents duplicate proposals, and can be served to those trying to catchup

§last_decided_view: TYPES::Time

last view had a successful decide event

§locked_view: TYPES::Time

The locked_qc view number

§saved_leaves: CommitmentMap<Leaf<TYPES>>

Map of leaf hash -> leaf

  • contains undecided leaves
  • includes the MOST RECENT decided leaf
§saved_payloads: BTreeMap<TYPES::Time, Arc<[u8]>>

Saved payloads.

Encoded transactions for every view if we got a payload for that view.

§high_qc: QuorumCertificate<TYPES>

the highqc per spec

§metrics: Arc<ConsensusMetricsValue>

A reference to the metrics trait

Implementations§

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impl<TYPES: NodeType> Consensus<TYPES>

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pub fn new( validated_state_map: BTreeMap<TYPES::Time, View<TYPES>>, cur_view: TYPES::Time, locked_view: TYPES::Time, last_decided_view: TYPES::Time, last_proposals: BTreeMap<TYPES::Time, Proposal<TYPES, QuorumProposal<TYPES>>>, saved_leaves: CommitmentMap<Leaf<TYPES>>, saved_payloads: BTreeMap<TYPES::Time, Arc<[u8]>>, high_qc: QuorumCertificate<TYPES>, metrics: Arc<ConsensusMetricsValue> ) -> Self

Constructor.

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pub fn cur_view(&self) -> TYPES::Time

Get the current view.

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pub fn last_decided_view(&self) -> TYPES::Time

Get the last decided view.

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pub fn locked_view(&self) -> TYPES::Time

Get the locked view.

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pub fn high_qc(&self) -> &QuorumCertificate<TYPES>

Get the high QC.

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pub fn validated_state_map(&self) -> &BTreeMap<TYPES::Time, View<TYPES>>

Get the validated state map.

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pub fn saved_leaves(&self) -> &CommitmentMap<Leaf<TYPES>>

Get the saved leaves.

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pub fn saved_payloads(&self) -> &BTreeMap<TYPES::Time, Arc<[u8]>>

Get the saved payloads.

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pub fn vid_shares(&self) -> &VidShares<TYPES>

Get the vid shares.

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pub fn saved_da_certs(&self) -> &HashMap<TYPES::Time, DaCertificate<TYPES>>

Get the saved DA certs.

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pub fn last_proposals( &self ) -> &BTreeMap<TYPES::Time, Proposal<TYPES, QuorumProposal<TYPES>>>

Get the map of our recent proposals

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pub fn update_view(&mut self, view_number: TYPES::Time) -> Result<()>

Update the current view.

§Errors

Can return an error when the new view_number is not higher than the existing view number.

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pub fn update_last_proposed_view( &mut self, proposal: Proposal<TYPES, QuorumProposal<TYPES>> ) -> Result<()>

Update the last proposal.

§Errors

Can return an error when the new view_number is not higher than the existing proposed view number.

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pub fn update_last_decided_view( &mut self, view_number: TYPES::Time ) -> Result<()>

Update the last decided view.

§Errors

Can return an error when the new view_number is not higher than the existing decided view number.

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pub fn update_locked_view(&mut self, view_number: TYPES::Time) -> Result<()>

Update the locked view.

§Errors

Can return an error when the new view_number is not higher than the existing locked view number.

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pub fn update_validated_state_map( &mut self, view_number: TYPES::Time, view: View<TYPES> ) -> Result<()>

Update the validated state map with a new view_number/view combo.

§Errors

Can return an error when the new view contains less information than the exisiting view with the same view number.

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pub fn update_saved_leaves(&mut self, leaf: Leaf<TYPES>)

Update the saved leaves with a new leaf.

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pub fn update_saved_payloads( &mut self, view_number: TYPES::Time, encoded_transaction: Arc<[u8]> ) -> Result<()>

Update the saved payloads with a new encoded transaction.

§Errors

Can return an error when there’s an existing payload corresponding to the same view number.

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pub fn update_high_qc( &mut self, high_qc: QuorumCertificate<TYPES> ) -> Result<()>

Update the high QC if given a newer one.

§Errors

Can return an error when the provided high_qc is not newer than the existing entry.

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pub fn update_vid_shares( &mut self, view_number: TYPES::Time, disperse: Proposal<TYPES, VidDisperseShare<TYPES>> )

Add a new entry to the vid_shares map.

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pub fn update_saved_da_certs( &mut self, view_number: TYPES::Time, cert: DaCertificate<TYPES> )

Add a new entry to the da_certs map.

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pub fn visit_leaf_ancestors<F>( &self, start_from: TYPES::Time, terminator: Terminator<TYPES::Time>, ok_when_finished: bool, f: F ) -> Result<(), HotShotError<TYPES>>
where F: FnMut(&Leaf<TYPES>, Arc<<TYPES as NodeType>::ValidatedState>, Option<Arc<<<TYPES as NodeType>::ValidatedState as ValidatedState<TYPES>>::Delta>>) -> bool,

gather information from the parent chain of leaves

§Errors

If the leaf or its ancestors are not found in storage

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pub fn collect_garbage( &mut self, old_anchor_view: TYPES::Time, new_anchor_view: TYPES::Time )

Garbage collects based on state change right now, this removes from both the saved_payloads and validated_state_map fields of Consensus.

§Panics

On inconsistent stored entries

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pub fn decided_leaf(&self) -> Leaf<TYPES>

Gets the last decided leaf.

§Panics

if the last decided view’s leaf does not exist in the state map or saved leaves, which should never happen.

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pub fn state( &self, view_number: TYPES::Time ) -> Option<&Arc<TYPES::ValidatedState>>

Gets the validated state with the given view number, if in the state map.

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pub fn state_and_delta(&self, view_number: TYPES::Time) -> StateAndDelta<TYPES>

Gets the validated state and state delta with the given view number, if in the state map.

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pub fn decided_state(&self) -> Arc<TYPES::ValidatedState>

Gets the last decided validated state.

§Panics

If the last decided view’s state does not exist in the state map, which should never happen.

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pub async fn calculate_and_update_vid( consensus: OuterConsensus<TYPES>, view: <TYPES as NodeType>::Time, membership: Arc<TYPES::Membership>, private_key: &<TYPES::SignatureKey as SignatureKey>::PrivateKey ) -> Option<()>

Associated helper function: Takes LockedConsensusState which will be updated; locks it for read and write accordingly. Calculates VidDisperse based on the view, the txns and the membership, and updates vid_shares map with the signed VidDisperseShare proposals. Returned Option indicates whether the update has actually happened or not.

Trait Implementations§

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impl<TYPES: Clone + NodeType> Clone for Consensus<TYPES>
where TYPES::Time: Clone,

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fn clone(&self) -> Consensus<TYPES>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<TYPES: NodeType> Debug for Consensus<TYPES>
where BTreeMap<TYPES::Time, View<TYPES>>: Debug, VidShares<TYPES>: Debug, HashMap<TYPES::Time, DaCertificate<TYPES>>: Debug, TYPES::Time: Debug, BTreeMap<TYPES::Time, Proposal<TYPES, QuorumProposal<TYPES>>>: Debug, CommitmentMap<Leaf<TYPES>>: Debug, BTreeMap<TYPES::Time, Arc<[u8]>>: Debug, QuorumCertificate<TYPES>: Debug,

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<TYPES> Freeze for Consensus<TYPES>
where <<TYPES as NodeType>::SignatureKey as SignatureKey>::QcType: Freeze, <TYPES as NodeType>::Time: Freeze,

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impl<TYPES> !RefUnwindSafe for Consensus<TYPES>

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impl<TYPES> Send for Consensus<TYPES>

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impl<TYPES> Sync for Consensus<TYPES>

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impl<TYPES> Unpin for Consensus<TYPES>
where TYPES: Unpin, <TYPES as NodeType>::BlockHeader: Unpin, <TYPES as NodeType>::BlockPayload: Unpin, <<TYPES as NodeType>::SignatureKey as SignatureKey>::QcType: Unpin, <TYPES as NodeType>::Time: Unpin,

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impl<TYPES> !UnwindSafe for Consensus<TYPES>

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fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Immutable access to the Deref::Target of a value. Read more
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fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Mutable access to the Deref::Target of a value. Read more
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fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self

Calls .tap() only in debug builds, and is erased in release builds.
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fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self

Calls .tap_mut() only in debug builds, and is erased in release builds.
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fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Calls .tap_borrow() only in debug builds, and is erased in release builds.
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fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Calls .tap_borrow_mut() only in debug builds, and is erased in release builds.
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fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Calls .tap_ref() only in debug builds, and is erased in release builds.
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fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds.
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fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.
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fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> TryConv for T

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fn try_conv<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more