hotshot_types::message

Struct UpgradeLock

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pub struct UpgradeLock<TYPES: NodeType, V: Versions> {
    pub decided_upgrade_certificate: Arc<RwLock<Option<UpgradeCertificate<TYPES>>>>,
    pub _pd: PhantomData<V>,
}
Expand description

A lock for an upgrade certificate decided by HotShot, which doubles as PhantomData for an instance of the Versions trait.

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§decided_upgrade_certificate: Arc<RwLock<Option<UpgradeCertificate<TYPES>>>>

a shared lock to an upgrade certificate decided by consensus

§_pd: PhantomData<V>

phantom data for the Versions trait

Implementations§

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impl<TYPES: NodeType, V: Versions> UpgradeLock<TYPES, V>

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pub fn new() -> Self

Create a new UpgradeLock for a fresh instance of HotShot

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pub fn from_certificate(certificate: &Option<UpgradeCertificate<TYPES>>) -> Self

Create a new UpgradeLock from an optional upgrade certificate

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pub async fn upgrade_view(&self) -> Option<TYPES::View>

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pub async fn version(&self, view: TYPES::View) -> Result<Version>

Calculate the version applied in a view, based on the provided upgrade lock.

§Errors

Returns an error if we do not support the version required by the decided upgrade certificate.

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pub async fn version_infallible(&self, view: TYPES::View) -> Version

Calculate the version applied in a view, based on the provided upgrade lock.

This function does not fail, since it does not check that the version is supported.

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pub async fn epochs_enabled(&self, view: TYPES::View) -> bool

Return whether epochs are enabled in the given view

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pub async fn upgraded_drb_and_header(&self, view: TYPES::View) -> bool

Return whether epochs are enabled in the given view

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pub async fn serialize<M: HasViewNumber<TYPES> + Serialize>( &self, message: &M, ) -> Result<Vec<u8>>

Serialize a message with a version number, using message.view_number() and an optional decided upgrade certificate to determine the message’s version.

§Errors

Errors if serialization fails.

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pub async fn deserialize<M: HasViewNumber<TYPES> + for<'a> Deserialize<'a>>( &self, message: &[u8], ) -> Result<(M, Version)>

Deserialize a message with a version number, using message.view_number() to determine the message’s version. This function will fail on improperly versioned messages. Returns both the deserialized message and the version of the message

§Errors

Errors if deserialization fails.

Trait Implementations§

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impl<TYPES: Clone + NodeType, V: Clone + Versions> Clone for UpgradeLock<TYPES, V>

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fn clone(&self) -> UpgradeLock<TYPES, V>

Returns a duplicate 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: Debug + NodeType, V: Debug + Versions> Debug for UpgradeLock<TYPES, V>

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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, V> Freeze for UpgradeLock<TYPES, V>

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impl<TYPES, V> !RefUnwindSafe for UpgradeLock<TYPES, V>

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impl<TYPES, V> Send for UpgradeLock<TYPES, V>

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impl<TYPES, V> Sync for UpgradeLock<TYPES, V>

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impl<TYPES, V> Unpin for UpgradeLock<TYPES, V>
where V: Unpin,

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impl<TYPES, V> !UnwindSafe for UpgradeLock<TYPES, V>

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