Struct PowManager

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pub(crate) struct PowManager<R>(RwLock<State<R>>);
Expand description

This is responsible for rotating Proof-of-Work seeds and doing verification of PoW solves.

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§0: RwLock<State<R>>

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impl<R: Runtime> PowManager<R>

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pub(crate) fn new( runtime: R, nickname: HsNickname, instance_dir: InstanceRawSubdir, keymgr: Arc<KeyMgr>, storage_handle: StorageHandle<PowManagerStateRecord>, ) -> Result<NewPowManager<R>, StartupError>

Create a new PowManager.

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pub(crate) fn launch(self: &Arc<Self>) -> Result<(), StartupError>

Launch background task to rotate seeds.

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async fn main_loop_task(self: Arc<Self>)

Main loop for rotating seeds.

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fn make_next_expiration_time<Rng: RngCore + CryptoRng>( rng: &mut Rng, ) -> SystemTime

Make a randomized seed expiration time.

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fn make_verifier( keymgr: &Arc<KeyMgr>, nickname: HsNickname, time_period: TimePeriod, seed: Seed, ) -> Option<Verifier>

Make a ner Verifier for a given TimePeriod and Seed.

If a key is not available for this TP, returns None.

This takes individual agruments instead of &self to avoid getting into any trouble with locking.

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fn calculate_early_rotation_time(expiration_time: SystemTime) -> SystemTime

Calculate a time when we want to rotate a seed, slightly before it expires, in order to ensure that clients don’t ever download a seed that is already out of date.

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async fn rotate_seeds_if_expiring(&self) -> Option<SystemTime>

Rotate any seeds that will expire soon.

This also pokes the publisher when needed to cause rotated seeds to be published.

Returns the next time this function should be called again.

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pub(crate) fn get_pow_params( self: &Arc<Self>, time_period: TimePeriod, ) -> Result<PowParams, InternalPowError>

Get PowParams for a given TimePeriod.

If we don’t have any Seeds for the requested period, generate them. This is the only way that PowManager learns about new TimePeriods.

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fn check_solve( self: &Arc<Self>, solve: &ProofOfWorkV1, ) -> Result<(), PowSolveError>

Verify a PoW solve.

Auto Trait Implementations§

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impl<R> !Freeze for PowManager<R>

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impl<R> RefUnwindSafe for PowManager<R>

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impl<R> Send for PowManager<R>
where R: Send,

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impl<R> Sync for PowManager<R>
where R: Send + Sync,

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impl<R> Unpin for PowManager<R>
where R: Unpin,

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impl<R> UnwindSafe for PowManager<R>

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