zebra_chain::history_tree

Struct NonEmptyHistoryTree

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

History tree (Merkle mountain range) structure that contains information about the block history, as specified in ZIP-221.

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impl NonEmptyHistoryTree

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pub fn from_cache( network: &Network, size: u32, peaks: BTreeMap<u32, Entry>, current_height: Height, ) -> Result<Self, HistoryTreeError>

Recreate a HistoryTree from previously saved data.

The parameters must come from the values of NonEmptyHistoryTree::size, NonEmptyHistoryTree::peaks and NonEmptyHistoryTree::current_height of a HistoryTree.

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pub fn from_block( network: &Network, block: Arc<Block>, sapling_root: &Root, orchard_root: &Root, ) -> Result<Self, HistoryTreeError>

Create a new history tree with a single block.

sapling_root is the root of the Sapling note commitment tree of the block. orchard_root is the root of the Orchard note commitment tree of the block; (ignored for pre-Orchard blocks).

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pub fn push( &mut self, block: Arc<Block>, sapling_root: &Root, orchard_root: &Root, ) -> Result<(), HistoryTreeError>

Add block data to the tree.

sapling_root is the root of the Sapling note commitment tree of the block. orchard_root is the root of the Orchard note commitment tree of the block; (ignored for pre-Orchard blocks).

§Panics

If the block height is not one more than the previously pushed block.

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pub fn try_extend<'a, T: IntoIterator<Item = (Arc<Block>, &'a Root, &'a Root)>>( &mut self, iter: T, ) -> Result<(), HistoryTreeError>

Extend the history tree with the given blocks.

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pub fn hash(&self) -> ChainHistoryMmrRootHash

Return the hash of the tree root.

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pub fn peaks(&self) -> &BTreeMap<u32, Entry>

Return the peaks of the tree.

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pub fn size(&self) -> u32

Return the (total) number of nodes in the tree.

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pub fn current_height(&self) -> Height

Return the height of the last added block.

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pub fn network(&self) -> &Network

Return the network where this tree is used.

Trait Implementations§

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impl Clone for NonEmptyHistoryTree

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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 Debug for NonEmptyHistoryTree

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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 From<NonEmptyHistoryTree> for HistoryTree

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fn from(tree: NonEmptyHistoryTree) -> Self

Converts to this type from the input type.

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