Struct SegmentHeader 

pub struct SegmentHeader {
    pub version: u16,
    pub flags: u16,
    pub created_at: i64,
    pub min_timestamp: i64,
    pub max_timestamp: i64,
    pub row_count: u64,
    pub column_count: u16,
    pub series_count: u32,
    pub compression: u8,
    pub sort_order: u8,
}

Segment file header.

Fields

version: u16

Format version.

flags: u16

Flags (reserved for future use).

created_at: i64

Creation timestamp (nanoseconds since epoch).

min_timestamp: i64

Minimum timestamp across all rows in the segment.

max_timestamp: i64

Maximum timestamp across all rows in the segment.

row_count: u64

Total number of rows in the segment.

column_count: u16

Number of columns (including timestamp).

series_count: u32

Number of unique series in the segment.

compression: u8

Compression codec: 0 = LZ4, 1 = Zstd, 2 = None.

sort_order: u8

Sort order: 0 = unsorted, 1 = by series+timestamp.

Implementations

impl SegmentHeader

pub fn to_bytes(&self) -> Vec<u8>

Serialize the header to bytes (always HEADER_SIZE bytes).

pub fn from_bytes(data: &[u8]) -> Result<Self>

Deserialize a header from bytes.

Errors

Returns SegmentError::InvalidMagic if magic bytes don’t match, or SegmentError::UnsupportedVersion if version is not supported.

Trait Implementations

impl Clone for SegmentHeader

fn clone(&self) -> SegmentHeader

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SegmentHeader

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for SegmentHeader

impl PartialEq for SegmentHeader

fn eq(&self, other: &SegmentHeader) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for SegmentHeader