pub struct Blockchain<Block: BlockT> { /* private fields */ }
Expand description

In-memory blockchain. Supports concurrent reads.

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impl<Block: BlockT> Blockchain<Block>

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pub fn id(&self, id: BlockId<Block>) -> Option<Block::Hash>

Get header hash of given block.

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pub fn new() -> Blockchain<Block>

Create new in-memory blockchain storage.

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pub fn insert( &self, hash: Block::Hash, header: <Block as BlockT>::Header, justifications: Option<Justifications>, body: Option<Vec<<Block as BlockT>::Extrinsic>>, new_state: NewBlockState ) -> Result<()>

Insert a block header and associated data.

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pub fn blocks_count(&self) -> usize

Get total number of blocks.

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pub fn equals_to(&self, other: &Self) -> bool

Compare this blockchain with another in-mem blockchain

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pub fn canon_equals_to(&self, other: &Self) -> bool

Compare canonical chain to other canonical chain.

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pub fn insert_cht_root(&self, block: NumberFor<Block>, cht_root: Block::Hash)

Insert header CHT root.

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pub fn set_head(&self, hash: Block::Hash) -> Result<()>

Set an existing block as head.

Trait Implementations§

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impl<Block: BlockT> AuxStore for Blockchain<Block>

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fn insert_aux<'a, 'b: 'a, 'c: 'a, I: IntoIterator<Item = &'a (&'c [u8], &'c [u8])>, D: IntoIterator<Item = &'a &'b [u8]>>( &self, insert: I, delete: D ) -> Result<()>

Insert auxiliary data into key-value store. Read more
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fn get_aux(&self, key: &[u8]) -> Result<Option<Vec<u8>>>

Query auxiliary data from key-value store.
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impl<Block: BlockT> Backend<Block> for Blockchain<Block>

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fn body( &self, hash: Block::Hash ) -> Result<Option<Vec<<Block as BlockT>::Extrinsic>>>

Get block body. Returns None if block is not found.
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fn justifications(&self, hash: Block::Hash) -> Result<Option<Justifications>>

Get block justifications. Returns None if no justification exists.
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fn last_finalized(&self) -> Result<Block::Hash>

Get last finalized block hash.
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fn leaves(&self) -> Result<Vec<Block::Hash>>

Returns hashes of all blocks that are leaves of the block tree. in other words, that have no children, are chain heads. Results must be ordered best (longest, highest) chain first.
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fn children(&self, _parent_hash: Block::Hash) -> Result<Vec<Block::Hash>>

Return hashes of all blocks that are children of the block with parent_hash.
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fn indexed_transaction(&self, _hash: Block::Hash) -> Result<Option<Vec<u8>>>

Get single indexed transaction by content hash. Note that this will only fetch transactions that are indexed by the runtime with storage_index_transaction.
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fn block_indexed_body(&self, _hash: Block::Hash) -> Result<Option<Vec<Vec<u8>>>>

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fn longest_containing( &self, base_hash: <Block as Block>::Hash, import_lock: &RwLock<RawRwLock, ()> ) -> Result<Option<<Block as Block>::Hash>, Error>

Get the most recent block hash of the longest chain that contains a block with the given base_hash. Read more
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fn has_indexed_transaction( &self, hash: <Block as Block>::Hash ) -> Result<bool, Error>

Check if indexed transaction exists.
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fn displaced_leaves_after_finalizing( &self, finalized_block_hash: <Block as Block>::Hash, finalized_block_number: <<Block as Block>::Header as Header>::Number ) -> Result<DisplacedLeavesAfterFinalization<Block>, Error>

Returns all leaves that will be displaced after the block finalization.
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impl<Block: Clone + BlockT> Clone for Blockchain<Block>

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fn clone(&self) -> Blockchain<Block>

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<Block: BlockT> Default for Blockchain<Block>

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<Block: BlockT> HeaderBackend<Block> for Blockchain<Block>

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fn header(&self, hash: Block::Hash) -> Result<Option<<Block as BlockT>::Header>>

Get block header. Returns None if block is not found.
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fn info(&self) -> Info<Block>

Get blockchain info.
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fn status(&self, hash: Block::Hash) -> Result<BlockStatus>

Get block status.
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fn number(&self, hash: Block::Hash) -> Result<Option<NumberFor<Block>>>

Get block number by hash. Returns None if the header is not in the chain.
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fn hash( &self, number: <<Block as BlockT>::Header as HeaderT>::Number ) -> Result<Option<Block::Hash>>

Get block hash by number. Returns None if the header is not in the chain.
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fn block_hash_from_id( &self, id: &BlockId<Block> ) -> Result<Option<<Block as Block>::Hash>, Error>

Convert an arbitrary block ID into a block hash.
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fn block_number_from_id( &self, id: &BlockId<Block> ) -> Result<Option<<<Block as Block>::Header as Header>::Number>, Error>

Convert an arbitrary block ID into a block hash.
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fn expect_header( &self, hash: <Block as Block>::Hash ) -> Result<<Block as Block>::Header, Error>

Get block header. Returns UnknownBlock error if block is not found.
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fn expect_block_number_from_id( &self, id: &BlockId<Block> ) -> Result<<<Block as Block>::Header as Header>::Number, Error>

Convert an arbitrary block ID into a block number. Returns UnknownBlock error if block is not found.
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fn expect_block_hash_from_id( &self, id: &BlockId<Block> ) -> Result<<Block as Block>::Hash, Error>

Convert an arbitrary block ID into a block hash. Returns UnknownBlock error if block is not found.
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impl<Block: BlockT> HeaderMetadata<Block> for Blockchain<Block>

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type Error = Error

Error used in case the header metadata is not found.
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fn header_metadata( &self, hash: Block::Hash ) -> Result<CachedHeaderMetadata<Block>, Self::Error>

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fn insert_header_metadata( &self, _hash: Block::Hash, _metadata: CachedHeaderMetadata<Block> )

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fn remove_header_metadata(&self, _hash: Block::Hash)

Auto Trait Implementations§

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impl<Block> !RefUnwindSafe for Blockchain<Block>

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impl<Block> Send for Blockchain<Block>

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impl<Block> Sync for Blockchain<Block>

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impl<Block> Unpin for Blockchain<Block>

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impl<Block> !UnwindSafe for Blockchain<Block>

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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Immutably borrows from an owned value. Read more
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impl<Block, T> ForkBackend<Block> for T
where Block: Block, T: HeaderMetadata<Block> + HeaderBackend<Block> + Send + Sync,

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fn expand_forks( &self, fork_heads: &[<Block as Block>::Hash] ) -> Result<BTreeSet<<Block as Block>::Hash>, Error>

Returns block hashes for provided fork heads. It skips the fork if when blocks are missing (e.g. warp-sync) and internal tree_route function fails. Read more
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