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Consensus

hotshot_new_protocol::consensus

Struct Consensus 

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pub struct Consensus<T: NodeType> {
Show 34 fields
    proposals: BTreeMap<ViewNumber, Proposal<T>>,
    signed_proposals: BTreeMap<ViewNumber, Proposal<T, Proposal<T>>>,
    proposed_views: BTreeSet<ViewNumber>,
    vid_shares: BTreeMap<ViewNumber, VidDisperseShare2<T>>,
    states_verified: BTreeMap<ViewNumber, Commitment<Leaf2<T>>>,
    blocks_reconstructed: BTreeMap<ViewNumber, VidCommitment2>,
    blocks: BTreeMap<ViewNumber, T::BlockPayload>,
    certs: BTreeMap<ViewNumber, Certificate1<T>>,
    certs2: BTreeMap<ViewNumber, Certificate2<T>>,
    timeout_certs: BTreeMap<ViewNumber, TimeoutCertificate2<T>>,
    locked_cert: Option<Certificate1<T>>,
    headers: BTreeMap<(ViewNumber, Commitment<Leaf2<T>>), T::BlockHeader>,
    leaves: BTreeMap<ViewNumber, Leaf2<T>>,
    last_decided_view: ViewNumber,
    last_decided_leaf: Leaf2<T>,
    drb_results: BTreeMap<EpochNumber, DrbResult>,
    voted_1_views: BTreeSet<ViewNumber>,
    voted_2_views: BTreeSet<ViewNumber>,
    pre_cutover_views: BTreeSet<ViewNumber>,
    pending_certs1: BTreeMap<ViewNumber, Certificate1<T>>,
    pending_certs2: BTreeMap<ViewNumber, Certificate2<T>>,
    timeout_view: ViewNumber,
    current_view: ViewNumber,
    current_epoch: Option<EpochNumber>,
    stake_table_coordinator: EpochMembershipCoordinator<T>,
    public_key: T::SignatureKey,
    private_key: <T::SignatureKey as SignatureKey>::PrivateKey,
    state_private_key: <T::StateSignatureKey as StateSignatureKey>::StatePrivateKey,
    stake_table_capacity: usize,
    state_certs: BTreeMap<EpochNumber, LightClientStateUpdateCertificateV2<T>>,
    node_id: KeyPrefix,
    upgrade_lock: UpgradeLock<T>,
    garbage_collection_interval: BlockNumber,
    pub(crate) epoch_height: BlockNumber,

}

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§proposals: BTreeMap<ViewNumber, Proposal<T>>§signed_proposals: BTreeMap<ViewNumber, Proposal<T, Proposal<T>>>§proposed_views: BTreeSet<ViewNumber>§vid_shares: BTreeMap<ViewNumber, VidDisperseShare2<T>>§states_verified: BTreeMap<ViewNumber, Commitment<Leaf2<T>>>§blocks_reconstructed: BTreeMap<ViewNumber, VidCommitment2>§blocks: BTreeMap<ViewNumber, T::BlockPayload>§certs: BTreeMap<ViewNumber, Certificate1<T>>§certs2: BTreeMap<ViewNumber, Certificate2<T>>§timeout_certs: BTreeMap<ViewNumber, TimeoutCertificate2<T>>§locked_cert: Option<Certificate1<T>>§headers: BTreeMap<(ViewNumber, Commitment<Leaf2<T>>), T::BlockHeader>§leaves: BTreeMap<ViewNumber, Leaf2<T>>§last_decided_view: ViewNumber§last_decided_leaf: Leaf2<T>§drb_results: BTreeMap<EpochNumber, DrbResult>§voted_1_views: BTreeSet<ViewNumber>§voted_2_views: BTreeSet<ViewNumber>§pre_cutover_views: BTreeSet<ViewNumber>

Skipped by maybe_vote_2_and_update_lock (V1 AvidM dispersal).

§pending_certs1: BTreeMap<ViewNumber, Certificate1<T>>

Certificates whose epoch membership was not yet available when they arrived. They are retried when new epoch data becomes available.

§pending_certs2: BTreeMap<ViewNumber, Certificate2<T>>§timeout_view: ViewNumber§current_view: ViewNumber§current_epoch: Option<EpochNumber>§stake_table_coordinator: EpochMembershipCoordinator<T>§public_key: T::SignatureKey§private_key: <T::SignatureKey as SignatureKey>::PrivateKey§state_private_key: <T::StateSignatureKey as StateSignatureKey>::StatePrivateKey§stake_table_capacity: usize§state_certs: BTreeMap<EpochNumber, LightClientStateUpdateCertificateV2<T>>§node_id: KeyPrefix§upgrade_lock: UpgradeLock<T>§garbage_collection_interval: BlockNumber§epoch_height: BlockNumber

Implementations§

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impl<T: NodeType> Consensus<T>

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pub fn new<B>( membership_coordinator: EpochMembershipCoordinator<T>, public_key: T::SignatureKey, private_key: <T::SignatureKey as SignatureKey>::PrivateKey, state_private_key: <T::StateSignatureKey as StateSignatureKey>::StatePrivateKey, stake_table_capacity: usize, upgrade_lock: UpgradeLock<T>, genesis_leaf: Leaf2<T>, epoch_height: B, garbage_collection_interval: B, ) -> Self
where B: Into<BlockNumber>,

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pub fn seed_genesis( &mut self, genesis_cert1: Certificate1<T>, genesis_proposal: Proposal<T>, )

Seed the genesis state so that the view-1 leader can propose without any external bootstrap injection.

Stores a genesis certificate and proposal at view 0, sets the locked certificate, and sets the current epoch. After calling this, a subsequent apply that triggers maybe_propose(view=1) will find the parent cert and proposal it needs.

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pub fn apply_pre_cutover_seed(&mut self, seed: PreCutoverSeed<T>)

Apply a PreCutoverSeed to bridge legacy state into the new protocol. Performs the four operations the seed describes atomically: anchor the decided view, install the undecided leaves so they can be decided via Cert2, register the legacy high_qc, and advance current_view/timeout_view to the pre-cutover frontier.

Idempotent: calling with the same seed twice (or with an older seed) does not regress decided/locked state.

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pub(crate) fn register_legacy_qc(&mut self, justify_qc: &Certificate1<T>)

Register justify_qc as Cert1 for its parent view (idempotent) and bump locked_cert if newer.

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pub fn proposal_at(&self, view: ViewNumber) -> Option<&Proposal<T>>

Return the proposal stored at the given view, if any.

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pub fn cert1_at(&self, view: ViewNumber) -> Option<&Certificate1<T>>

Return the Certificate1 (QC) stored at the given view, if any.

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fn signed_vid_share( &self, view: ViewNumber, ) -> Option<SignedProposal<T, VidDisperseShare2<T>>>

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pub fn signed_proposal_fetch_request( &self, view: ViewNumber, ) -> Result<ProposalFetchRequest<T>, <T::SignatureKey as SignatureKey>::SignError>

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pub fn cert2_at(&self, view: ViewNumber) -> Option<&Certificate2<T>>

Return the Certificate2 stored at the given view, if any.

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pub fn timeout_cert_at( &self, view: ViewNumber, ) -> Option<&TimeoutCertificate2<T>>

Return the TimeoutCertificate2 that advanced consensus to view, if any. Keyed by the view it advanced into (i.e. one greater than the view it certified as timed out).

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pub fn locked_view(&self) -> Option<ViewNumber>

Return the view of the locked certificate, if set.

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pub fn apply( &mut self, input: ConsensusInput<T>, outbox: &mut Outbox<ConsensusOutput<T>>, )

Apply consensus to the given input and collect protocol outputs.

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pub fn last_decided_view(&self) -> ViewNumber

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pub fn last_decided_leaf(&self) -> &Leaf2<T>

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pub fn undecided_leaves(&self) -> impl Iterator<Item = &Leaf2<T>>

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pub fn current_view(&self) -> ViewNumber

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pub fn current_epoch(&self) -> Option<EpochNumber>

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pub fn set_view(&mut self, view: ViewNumber, epoch: EpochNumber)

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pub fn wants_proposal_for_view(&self, view: &ViewNumber) -> bool

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pub fn signed_proposal( &self, view: &ViewNumber, ) -> Option<&SignedProposal<T, Proposal<T>>>

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pub fn gc(&mut self, view: ViewNumber, _epoch: EpochNumber)

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fn handle_proposal_with_vid_share( &mut self, sender: T::SignatureKey, proposal: ProposalMessage<T, Validated>, vid_share: VidDisperseShare2<T>, outbox: &mut Outbox<ConsensusOutput<T>>, ) -> Protocol

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fn handle_certificate1( &mut self, certificate: Certificate1<T>, outbox: &mut Outbox<ConsensusOutput<T>>, ) -> Protocol

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fn handle_certificate2( &mut self, certificate: Certificate2<T>, outbox: &mut Outbox<ConsensusOutput<T>>, ) -> Protocol

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fn handle_timeout( &mut self, view: ViewNumber, epoch: EpochNumber, outbox: &mut Outbox<ConsensusOutput<T>>, ) -> Protocol

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fn handle_timeout_certificate( &mut self, certificate: TimeoutCertificate2<T>, outbox: &mut Outbox<ConsensusOutput<T>>, ) -> Protocol

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fn handle_epoch_change( &mut self, epoch_change: EpochChangeMessage<T>, outbox: &mut Outbox<ConsensusOutput<T>>, ) -> Protocol

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fn send_vid_shares( &self, view: &ViewNumber, vid_disperse: VidDisperse2<T>, outbox: &mut Outbox<ConsensusOutput<T>>, )

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fn maybe_propose( &mut self, view: ViewNumber, outbox: &mut Outbox<ConsensusOutput<T>>, )

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fn maybe_decide( &mut self, view: ViewNumber, outbox: &mut Outbox<ConsensusOutput<T>>, )

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fn build_state_vote( &self, proposal: &Proposal<T>, ) -> Result<LightClientStateUpdateVote2<T>>

Build a LightClientStateUpdateVote2 for an epoch-root leaf.

Computes the LightClientState from the header, fetches the next-epoch stake-table commitment, and signs both the LCV2 (pre-upgrade, for backward compatibility with existing relay infrastructure) and LCV3 (current) Schnorr signatures.

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fn maybe_vote_1( &mut self, view: ViewNumber, outbox: &mut Outbox<ConsensusOutput<T>>, )

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fn maybe_vote_2_and_update_lock( &mut self, view: ViewNumber, outbox: &mut Outbox<ConsensusOutput<T>>, )

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fn is_safe(&self, proposal: &Proposal<T>) -> bool

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fn verify_cert<A, C>(&self, cert: &C, epoch: EpochNumber) -> bool
where C: Certificate<T, A>,

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fn try_verify_cert<A, C>( &self, cert: &C, epoch: EpochNumber, ) -> CertVerification
where C: Certificate<T, A>,

Try to verify a certificate, distinguishing between “epoch not available” and “cryptographically invalid”.

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fn retry_pending_certs(&mut self, outbox: &mut Outbox<ConsensusOutput<T>>)

Retry verification of pending certificates whose epoch may now be available.

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fn is_leader(&self, view: ViewNumber, epoch: EpochNumber) -> bool

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fn staked_in_epoch(&self, epoch: EpochNumber) -> bool

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