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Persistence

espresso_node::persistence::fs

Struct Persistence 

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pub struct Persistence {
    inner: Arc<RwLock<Inner>>,
    metrics: Arc<PersistenceMetricsValue>,
    probe: StorageProbe,
    consensus_only: bool,
}
Expand description

File system backed persistence.

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§inner: Arc<RwLock<Inner>>§metrics: Arc<PersistenceMetricsValue>

A reference to the metrics trait

§probe: StorageProbe

Startup findings about the filesystem backing the data directory.

§consensus_only: bool

Trait Implementations§

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impl Clone for Persistence

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fn clone(&self) -> Persistence

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Persistence

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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 MembershipPersistence for Persistence

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fn store_events<'life0, 'async_trait>( &'life0 self, to_l1_block: u64, events: Vec<(EventKey, StakeTableEvent)>, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

store stake table events upto the l1 block

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fn load_events<'life0, 'async_trait>( &'life0 self, from_l1_block: u64, to_l1_block: u64, ) -> Pin<Box<dyn Future<Output = Result<(Option<EventsPersistenceRead>, Vec<(EventKey, StakeTableEvent)>)>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Loads all events from persistent storage up to the specified L1 block.

§Returns

Returns a tuple containing:

  • Option<u64> - The queried L1 block for which all events have been successfully fetched.
  • Vec<(EventKey, StakeTableEvent)> - A list of events, where each entry is a tuple of the event key event key is (l1 block number, log index) and the corresponding StakeTable event.
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fn load_stake<'life0, 'async_trait>( &'life0 self, epoch: EpochNumber, ) -> Pin<Box<dyn Future<Output = Result<Option<StakeTuple>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Load stake table for epoch from storage
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fn load_drb_result<'life0, 'async_trait>( &'life0 self, epoch: EpochNumber, ) -> Pin<Box<dyn Future<Output = Result<Option<DrbResult>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Load the DRB result for epoch.
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fn load_epoch_root<'life0, 'async_trait>( &'life0 self, epoch: EpochNumber, ) -> Pin<Box<dyn Future<Output = Result<Option<Header>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Load the epoch root block header for epoch.
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fn store_epoch_root<'life0, 'async_trait>( &'life0 self, epoch: EpochNumber, block_header: Header, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Store the epoch root block header for epoch.
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fn load_latest_stake<'life0, 'async_trait>( &'life0 self, limit: u64, ) -> Pin<Box<dyn Future<Output = Result<Option<Vec<IndexedStake>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Load stake tables for storage for latest n known epochs
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fn store_stake<'life0, 'async_trait>( &'life0 self, epoch: EpochNumber, stake: AuthenticatedValidatorMap, block_reward: Option<RewardAmount>, stake_table_hash: Option<StakeTableHash>, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Store stake table at epoch in the persistence layer
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fn delete_stake_tables<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Delete all stake table events, the L1 block tracker, and the epoch DRB and root data.
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fn store_all_validators<'life0, 'async_trait>( &'life0 self, epoch: EpochNumber, all_validators: RegisteredValidatorMap, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn load_all_validators<'life0, 'async_trait>( &'life0 self, epoch: EpochNumber, offset: u64, limit: u64, ) -> Pin<Box<dyn Future<Output = Result<Vec<RegisteredValidator<PubKey>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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impl SequencerPersistence for Persistence

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fn load_config<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Option<NetworkConfig>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Load the orchestrator config from storage. Read more
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fn save_config<'life0, 'life1, 'async_trait>( &'life0 self, cfg: &'life1 NetworkConfig, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Save the orchestrator config to storage.
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fn load_latest_acted_view<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Option<ViewNumber>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Load the highest view saved with save_voted_view.
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fn load_restart_view<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Option<ViewNumber>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Load the view to restart from.
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fn persist_decided_leaves<'life0, 'life1, 'life2, 'life3, 'async_trait>( &'life0 self, leaf_chain: impl 'async_trait + IntoIterator<Item = (&'life1 LeafInfo<SeqTypes>, CertificatePair<SeqTypes>)> + Send, cert2: Option<&'life2 Certificate2<SeqTypes>>, _consumer: &'life3 (impl 'async_trait + EventConsumer + 'static), ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

Persist decided leaves only (the critical, must-not-lag half of a decide; also the anchor for restart recovery). Query-service ingestion and GC are deferred to process_decided_events. Backends with no replayable storage (e.g. NoStorage) may instead forward decide events to consumer here. Read more
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fn process_decided_events<'life0, 'life1, 'async_trait>( &'life0 self, view: ViewNumber, consumer: &'life1 (impl 'async_trait + EventConsumer + 'static), ) -> Pin<Box<dyn Future<Output = Result<Option<ViewNumber>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Generate decide events for consumer from persisted leaves, then GC processed data. Cursor-driven (e.g. last_processed_view): advances only on success, so it may lag consensus without losing data. Read more
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fn load_anchor_leaf<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Option<(Leaf2, CertificatePair<SeqTypes>)>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn load_da_proposal<'life0, 'async_trait>( &'life0 self, view: ViewNumber, ) -> Pin<Box<dyn Future<Output = Result<Option<Proposal<SeqTypes, DaProposal2<SeqTypes>>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn load_vid_share<'life0, 'async_trait>( &'life0 self, view: ViewNumber, ) -> Pin<Box<dyn Future<Output = Result<Option<Proposal<SeqTypes, VidDisperseShare<SeqTypes>>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn append_vid<'life0, 'life1, 'async_trait>( &'life0 self, proposal: &'life1 Proposal<SeqTypes, VidDisperseShare<SeqTypes>>, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

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fn append_da<'life0, 'life1, 'async_trait>( &'life0 self, proposal: &'life1 Proposal<SeqTypes, DaProposal<SeqTypes>>, _vid_commit: VidCommitment, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

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fn record_action<'life0, 'async_trait>( &'life0 self, view: ViewNumber, action: HotShotAction, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn append_quorum_proposal2<'life0, 'life1, 'async_trait>( &'life0 self, proposal: &'life1 Proposal<SeqTypes, QuorumProposalWrapper<SeqTypes>>, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

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fn append_cert2<'life0, 'async_trait>( &'life0 self, view: ViewNumber, cert2: Certificate2<SeqTypes>, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Persist cert2 for the given view.
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fn load_cert2<'life0, 'async_trait>( &'life0 self, view: ViewNumber, ) -> Pin<Box<dyn Future<Output = Result<Option<Certificate2<SeqTypes>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Load a persisted cert2 by view, if any.
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fn load_quorum_proposals<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<BTreeMap<ViewNumber, Proposal<SeqTypes, QuorumProposalWrapper<SeqTypes>>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Load the proposals saved by consensus
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fn load_quorum_proposal<'life0, 'async_trait>( &'life0 self, view: ViewNumber, ) -> Pin<Box<dyn Future<Output = Result<Proposal<SeqTypes, QuorumProposalWrapper<SeqTypes>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn load_upgrade_certificate<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Option<UpgradeCertificate<SeqTypes>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn store_upgrade_certificate<'life0, 'async_trait>( &'life0 self, decided_upgrade_certificate: Option<UpgradeCertificate<SeqTypes>>, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn append_next_epoch_high_qc2<'life0, 'async_trait>( &'life0 self, next_epoch_high_qc: NextEpochQuorumCertificate2<SeqTypes>, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn store_eqc<'life0, 'async_trait>( &'life0 self, high_qc: QuorumCertificate2<SeqTypes>, next_epoch_high_qc: NextEpochQuorumCertificate2<SeqTypes>, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Update the current eQC in storage.
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fn load_eqc<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Option<(QuorumCertificate2<SeqTypes>, NextEpochQuorumCertificate2<SeqTypes>)>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Load the current eQC from storage.
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fn append_high_qc2<'life0, 'async_trait>( &'life0 self, high_qc: QuorumCertificate2<SeqTypes>, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Persist the new protocol’s locked QC, written before each phase-2 vote. Read more
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fn load_high_qc2<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Option<QuorumCertificate2<SeqTypes>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Load the persisted locked QC, if any.
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fn append_boundary_qc2<'life0, 'async_trait>( &'life0 self, qc: QuorumCertificate2<SeqTypes>, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Persist the new protocol’s latest epoch boundary certificate: the own Certificate1 of the last block of an epoch, at the block’s view. Read more
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fn load_boundary_qc2<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Option<QuorumCertificate2<SeqTypes>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Load the persisted boundary certificate, if any.
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fn append_da2<'life0, 'life1, 'async_trait>( &'life0 self, proposal: &'life1 Proposal<SeqTypes, DaProposal2<SeqTypes>>, _vid_commit: VidCommitment, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

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fn store_drb_input<'life0, 'async_trait>( &'life0 self, drb_input: DrbInput, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn load_drb_input<'life0, 'async_trait>( &'life0 self, epoch: u64, ) -> Pin<Box<dyn Future<Output = Result<DrbInput>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn store_drb_result<'life0, 'async_trait>( &'life0 self, epoch: EpochNumber, drb_result: DrbResult, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn add_state_cert<'life0, 'async_trait>( &'life0 self, state_cert: LightClientStateUpdateCertificateV2<SeqTypes>, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn load_start_epoch_info<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Vec<InitializerEpochInfo<SeqTypes>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn load_state_cert<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Option<LightClientStateUpdateCertificateV2<SeqTypes>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

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fn enable_metrics(&mut self, metrics: &dyn Metrics)

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fn into_catchup_provider( self, _backoff: BackoffParams, ) -> Result<Arc<dyn StateCatchup>, Error>

Use this storage as a state catchup backend, if supported.
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fn load_consensus_state<'life0, 'async_trait>( &'life0 self, state: NodeState, upgrade: Upgrade, ) -> Pin<Box<dyn Future<Output = Result<(HotShotInitializer<SeqTypes>, Option<ViewNumber>), Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, Self: 'async_trait,

Load the latest known consensus state. Read more
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fn persist_event<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, event: &'life1 CoordinatorEvent<SeqTypes>, consumer: &'life2 (impl EventConsumer + 'async_trait + 'static), ) -> Pin<Box<dyn Future<Output = Option<ViewNumber>> + Send + 'async_trait>>
where 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, Self: 'async_trait,

Decode a consensus decide event and persist its leaves, for the consensus event loop. Returns the decided view on a decide so the caller can wake a background task to run process_decided_events; None otherwise. Read more
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fn append_decided_leaves<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, decided_view: ViewNumber, leaf_chain: impl IntoIterator<Item = (&'life1 LeafInfo<SeqTypes>, CertificatePair<SeqTypes>)> + Send + 'async_trait, consumer: &'life2 (impl EventConsumer + 'async_trait + 'static), ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, Self: 'async_trait,

Append decided leaves to persistent storage and emit a corresponding event. Read more
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fn load_anchor_view<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<ViewNumber, Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, Self: 'async_trait,

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impl StateCertPersistence for Persistence

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fn get_state_cert_by_epoch<'life0, 'async_trait>( &'life0 self, epoch: u64, ) -> Pin<Box<dyn Future<Output = Result<Option<LightClientStateUpdateCertificateV2<SeqTypes>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Get a state certificate for an epoch.
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fn insert_state_cert<'life0, 'async_trait>( &'life0 self, epoch: u64, cert: LightClientStateUpdateCertificateV2<SeqTypes>, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Insert a state certificate for a given epoch.

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Mutably borrows self, then passes self.borrow_mut() into the pipe function. Read more
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fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R
where Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

Borrows self, then passes self.as_ref() into the pipe function.
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fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R
where Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.as_mut() into the pipe function.
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fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R
where Self: Deref<Target = T>, T: 'a + ?Sized, R: 'a,

Borrows self, then passes self.deref() into the pipe function.
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fn pipe_deref_mut<'a, T, R>( &'a mut self, func: impl FnOnce(&'a mut T) -> R, ) -> R
where Self: DerefMut<Target = T> + Deref, T: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.deref_mut() into the pipe function.
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> PolicyExt for T
where T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns [Action::Follow] only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns [Action::Follow] if either self or other returns Action::Follow. Read more
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impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> Tap for T

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fn tap(self, func: impl FnOnce(&Self)) -> Self

Immutable access to a value. Read more
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fn tap_mut(self, func: impl FnOnce(&mut Self)) -> Self

Mutable access to a value. Read more
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fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Immutable access to the Borrow<B> of a value. Read more
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fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Mutable access to the BorrowMut<B> of a value. Read more
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fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Immutable access to the AsRef<R> view of a value. Read more
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fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Mutable access to the AsMut<R> view of a value. Read more
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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