Module header 

SSTable header parsing for Cassandra 5+ ‘oa’ format

This module handles parsing of SSTable headers which contain metadata about the table structure, compression, and other essential information.

Structs

ColumnInfo

Information about a column in the table

CompressionInfo

Compression configuration for the SSTable

SSTableHeader

SSTable header containing metadata about the table

SSTableStats

Statistics about the SSTable content

Enums

CassandraVersion

Cassandra version enum mapping magic numbers to versions

DataFormat

Data format characteristics for SSTable parsing

Constants

SSTABLE_MAGIC

Legacy magic number for backward compatibility

SUPPORTED_MAGIC_NUMBERS

All supported magic numbers NOTE: NB format Data.db files are HEADERLESS - first bytes are row data or compressed chunk data, NOT a magic number. The value 0x00400000 was incorrectly listed here as it matches LZ4 chunk length prefixes (16384 in LE = 0x00004000).

SUPPORTED_VERSION

Current supported format version

Functions

parse_column_info

Parse column information

parse_compression_info

Parse compression information

parse_magic_and_version

Parse the SSTable magic number and version, supporting multiple Cassandra versions

parse_magic_and_version_legacy

Legacy function for backward compatibility

parse_sstable_header

Parse the complete SSTable header

parse_sstable_stats

Parse SSTable statistics

parse_vstring

Parse a length-prefixed string using VInt encoding

serialize_sstable_header

Serialize an SSTable header to bytes