sidechain_mc_hash

Struct McHashInherentDataProvider

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pub struct McHashInherentDataProvider { /* private fields */ }
Expand description

Inherent data provider that provides the hash of the latest stable Cardano block (main chain reference block) observed by the block producer to be included in the header of the currently produced PC block.

This IDP also exposes further information about the currently referenced Cardano block and the block referenced by the parent block of the current one, for use by other inherent data providers.

§Creation

This inherent data provider has two different constructors that should be used depending on whether it is being used for proposing or verifying a block:

Implementations§

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impl McHashInherentDataProvider

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pub async fn new_proposal<Header>( parent_header: Header, data_source: &(dyn McHashDataSource + Send + Sync), slot: Slot, slot_duration: SlotDuration, ) -> Result<Self, McHashInherentError>
where Header: HeaderT,

Creates a new McHashInherentDataProvider for proposing a new Partner Chain block by querying the current state of Cardano and returning an instance referencing the latest stable block there.

§Arguments
  • parent_header: header of the parent of the block being produced
  • data_source: data source implementing McHashDataSource
  • slot: current Partner Chain slot
  • slot_duration: duration of the Partner Chain slot

The referenced Cardano block is guaranteed to be later or equal to the one referenced by the parent block and within a bounded time distance from slot.

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pub async fn new_verification<Header>( parent_header: Header, parent_slot: Option<Slot>, verified_block_slot: Slot, mc_state_reference_hash: McBlockHash, slot_duration: SlotDuration, block_source: &(dyn McHashDataSource + Send + Sync), ) -> Result<Self, McHashInherentError>
where Header: HeaderT,

Verifies a Cardano reference hash and creates a new McHashInherentDataProvider for an imported Partner Chain block.

§Arguments
  • parent_header: header of the parent of the block being produced or validated
  • parent_slot: slot of the parent block. None for genesis
  • verified_block_slot: Partner Chain slot of the block being verified
  • mc_state_reference_hash: Cardano block hash referenced by the block being verified
  • slot_duration: duration of the Partner Chain slot
  • block_source: data source implementing McHashDataSource
§Returns

This function will return an error if mc_state_reference_hash is not found or is before the block referenced by the parent of the block being verified.

Otherwise, the returned McHashInherentDataProvider instance will contain block data for mc_state_reference_hash.

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pub fn mc_epoch(&self) -> McEpochNumber

Returns the Cardano epoch containing the reference block

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pub fn mc_block(&self) -> McBlockNumber

Returns the reference block’s number

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pub fn mc_hash(&self) -> McBlockHash

Returns the reference block’s hash

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pub fn previous_mc_hash(&self) -> Option<McBlockHash>

Returns the previous reference block’s hash

Trait Implementations§

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impl Debug for McHashInherentDataProvider

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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 Deref for McHashInherentDataProvider

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type Target = MainchainBlock

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.
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impl From<MainchainBlock> for McHashInherentDataProvider

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fn from(mc_block: MainchainBlock) -> Self

Converts to this type from the input type.
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impl InherentDataProvider for McHashInherentDataProvider

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fn provide_inherent_data<'life0, 'life1, 'async_trait>( &'life0 self, inherent_data: &'life1 mut InherentData, ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Provide inherent data that should be included in a block. Read more
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fn try_handle_error<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, identifier: &'life1 InherentIdentifier, _error: &'life2 [u8], ) -> Pin<Box<dyn Future<Output = Option<Result<(), Error>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Convert the given encoded error to a string. Read more
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fn create_inherent_data<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<InherentData, Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, Self: 'async_trait,

Convenience function for creating [InherentData]. Read more

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