Struct SegmentHeader

#[repr(C)]
pub struct SegmentHeader {
    pub segment_index: Unaligned<SegmentIndex>,
    pub segment_root: SegmentRoot,
    pub prev_segment_header_hash: Blake3Hash,
    pub last_archived_block: LastArchivedBlock,
}

Segment header for a specific segment.

Each segment will have corresponding SegmentHeader included as the first item in the next segment. Each SegmentHeader includes hash of the previous one and all together form a chain of segment headers that is used for quick and efficient verification that some Piece corresponds to the actual archival history of the blockchain.

Fields

segment_index: Unaligned<SegmentIndex>

Segment index

segment_root: SegmentRoot

Root of roots of all records in a segment.

prev_segment_header_hash: Blake3Hash

Hash of the segment header of the previous segment

last_archived_block: LastArchivedBlock

Last archived block

Implementations

impl SegmentHeader

pub fn hash(&self) -> Blake3Hash

Hash of the whole segment header

pub const fn segment_index(&self) -> SegmentIndex

Get segment index (unwrap Unaligned)

Trait Implementations

impl Clone for SegmentHeader

fn clone(&self) -> SegmentHeader

Returns a copy 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 Decode for SegmentHeader

fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl<'de> Deserialize<'de> for SegmentHeader

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Encode for SegmentHeader

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )

Convert self to a slice and append it to the destination.

fn encode(&self) -> Vec<u8>

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> R

where F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl Hash for SegmentHeader

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for SegmentHeader

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for SegmentHeader

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TrivialType for SegmentHeader

where Unaligned<SegmentIndex>: TrivialType, SegmentRoot: TrivialType, Blake3Hash: TrivialType, LastArchivedBlock: TrivialType,

const METADATA: &[u8]

Data structure metadata in binary form, describing shape and types of the contents, see [IoTypeMetadataKind] for encoding details.

const SIZE: u32 = _

unsafe fn from_bytes(bytes: &[u8]) -> Option<&Self>

Create a reference to a type, which is represented by provided memory.

unsafe fn from_bytes_mut(bytes: &mut [u8]) -> Option<&mut Self>

Create a mutable reference to a type, which is represented by provided memory.

fn as_bytes(&self) -> &[u8]

Access the underlying byte representation of a data structure

unsafe fn as_bytes_mut(&mut self) -> &mut [u8]

Access the underlying mutable byte representation of a data structure.

impl TypeInfo for SegmentHeader

type Identity = SegmentHeader

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl Copy for SegmentHeader

impl EncodeLike for SegmentHeader

impl Eq for SegmentHeader

impl StructuralPartialEq for SegmentHeader