Module execution_types

Execution layer specific types for era1 files

Contains implementations for compressed execution layer data structures:

• CompressedHeader - Block header
• CompressedBody - Block body
• CompressedReceipts - Block receipts
• TotalDifficulty - Block total difficulty

These types use Snappy compression to match the specification.

See also https://github.com/eth-clients/e2store-format-specs/blob/main/formats/era1.md

Structs

Accumulator

Accumulator is computed by constructing an SSZ list of header-records and calculating the hash_tree_root

BlockTuple

A block tuple in an Era1 file, containing all components for a single block

CompressedBody

Compressed block body using snappyFramed(rlp(body))

CompressedHeader

Compressed block header using snappyFramed(rlp(header))

CompressedReceipts

Compressed receipts using snappyFramed(rlp(receipts))

SnappyRlpCodec

Generic codec for Snappy-compressed RLP data

TotalDifficulty

Total difficulty for a block

Constants

ACCUMULATOR

Accumulator record type

COMPRESSED_BODY

CompressedBody record type

COMPRESSED_HEADER

CompressedHeader record type

COMPRESSED_RECEIPTS

CompressedReceipts record type

MAX_BLOCKS_PER_ERA1

Maximum number of blocks in an Era1 file, limited by accumulator size

TOTAL_DIFFICULTY

TotalDifficulty record type

Traits

DecodeCompressed

Extension trait for generic decoding from compressed data