pub struct GrandpaBlockImport<Backend, Block: BlockT, Client, SC> { /* private fields */ }
Expand description

A block-import handler for GRANDPA.

This scans each imported block for signals of changing authority set. If the block being imported enacts an authority set change then:

  • If the current authority set is still live: we import the block
  • Otherwise, the block must include a valid justification.

When using GRANDPA, the block import worker should be using this block import object.

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impl<BE, Block: BlockT, Client, SC> BlockImport<Block> for GrandpaBlockImport<BE, Block, Client, SC>where NumberFor<Block>: BlockNumberOps, BE: Backend<Block>, Client: ClientForGrandpa<Block, BE>, Client::Api: GrandpaApi<Block>, for<'a> &'a Client: BlockImport<Block, Error = ConsensusError, Transaction = TransactionFor<Client, Block>>, TransactionFor<Client, Block>: 'static, SC: Send,

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type Error = Error

The error type.
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type Transaction = <<<Client as ProvideRuntimeApi<Block>>::Api as ApiExt<Block>>::StateBackend as Backend<<<Block as Block>::Header as Header>::Hashing>>::Transaction

The transaction type used by the backend.
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fn import_block<'life0, 'async_trait>( &'life0 mut self, block: BlockImportParams<Block, Self::Transaction>, new_cache: HashMap<Id, Vec<u8>> ) -> Pin<Box<dyn Future<Output = Result<ImportResult, Self::Error>> + Send + 'async_trait>>where Self: 'async_trait, 'life0: 'async_trait,

Import a block. Read more
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fn check_block<'life0, 'async_trait>( &'life0 mut self, block: BlockCheckParams<Block> ) -> Pin<Box<dyn Future<Output = Result<ImportResult, Self::Error>> + Send + 'async_trait>>where Self: 'async_trait, 'life0: 'async_trait,

Check block preconditions.
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impl<Backend, Block: BlockT, Client, SC: Clone> Clone for GrandpaBlockImport<Backend, Block, Client, SC>

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fn clone(&self) -> Self

Returns a copy 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<BE, Block: BlockT, Client, SC> JustificationImport<Block> for GrandpaBlockImport<BE, Block, Client, SC>where NumberFor<Block>: BlockNumberOps, BE: Backend<Block>, Client: ClientForGrandpa<Block, BE>, SC: SelectChain<Block>,

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type Error = Error

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fn on_start<'life0, 'async_trait>( &'life0 mut self ) -> Pin<Box<dyn Future<Output = Vec<(Block::Hash, NumberFor<Block>)>> + Send + 'async_trait>>where Self: 'async_trait, 'life0: 'async_trait,

Called by the import queue when it is started. Returns a list of justifications to request from the network.
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fn import_justification<'life0, 'async_trait>( &'life0 mut self, hash: Block::Hash, number: NumberFor<Block>, justification: Justification ) -> Pin<Box<dyn Future<Output = Result<(), Self::Error>> + Send + 'async_trait>>where Self: 'async_trait, 'life0: 'async_trait,

Import a Block justification and finalize the given block.

Auto Trait Implementations§

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impl<Backend, Block, Client, SC> !RefUnwindSafe for GrandpaBlockImport<Backend, Block, Client, SC>

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impl<Backend, Block, Client, SC> Send for GrandpaBlockImport<Backend, Block, Client, SC>where Backend: Send, Client: Send + Sync, SC: Send,

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impl<Backend, Block, Client, SC> Sync for GrandpaBlockImport<Backend, Block, Client, SC>where Backend: Sync, Client: Send + Sync, SC: Sync,

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impl<Backend, Block, Client, SC> Unpin for GrandpaBlockImport<Backend, Block, Client, SC>where Backend: Unpin, SC: Unpin, <Block as Block>::Hash: Unpin, <<Block as Block>::Header as Header>::Number: Unpin,

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impl<Backend, Block, Client, SC> !UnwindSafe for GrandpaBlockImport<Backend, Block, Client, SC>

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Any for Twhere T: Any,

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fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>

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fn type_name(&self) -> &'static str

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send + 'static>

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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Mutably borrows from an owned value. Read more
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Convert from a value of T into an equivalent instance of Option<Self>. Read more
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Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
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