Struct ethcore::snapshot::PoaSnapshot

pub struct PoaSnapshot;

Snapshot creation and restoration for PoA chains. Chunk format:

[FLAG, [header, epoch data], …]

• Header data at which transition occurred,
• epoch data (usually list of validators and proof of change)

FLAG is a bool: true for last chunk, false otherwise.

The last item of the last chunk will be a list containing data for the warp target block: [header, transactions, uncles, receipts, parent_td].

Trait Implementations

impl SnapshotComponents for PoaSnapshot

fn chunk_all(
    &mut self,
    chain: &BlockChain,
    block_at: H256,
    sink: &mut ChunkSink<'_>,
    _progress: &Progress,
    preferred_size: usize,
    eip1559_transition: BlockNumber
) -> Result<(), Error>

Create secondary snapshot chunks; these corroborate the state data in the state chunks.

fn rebuilder(
    &self,
    chain: BlockChain,
    db: Arc<dyn BlockChainDB>,
    manifest: &ManifestData
) -> Result<Box<dyn Rebuilder>, Error>

Create a rebuilder, which will have chunks fed into it in aribtrary order and then be finalized.

fn min_supported_version(&self) -> u64

Minimum supported snapshot version number.

fn current_version(&self) -> u64

Current version number