Struct sst::SstMetadata

pub struct SstMetadata {
    pub setsum: [u8; 32],
    pub first_key: Vec<u8>,
    pub last_key: Vec<u8>,
    pub smallest_timestamp: u64,
    pub biggest_timestamp: u64,
    pub file_size: u64,
}

Metadata about an Sst.

Fields

setsum: [u8; 32]

The digest of the setsum covering this Sst.

first_key: Vec<u8>

The smallest key in the sst.

last_key: Vec<u8>

The largest key in the sst.

smallest_timestamp: u64

The smallest timestamp (not necessarily correlated with first_key).

biggest_timestamp: u64

The biggest timestamp (not necessarily correlated with last_key).

file_size: u64

The file size.

Implementations

impl SstMetadata

pub fn first_key_escaped(&self) -> String

The first key, escaped for printing.

pub fn last_key_escaped(&self) -> String

The last key, escaped for printing.

Trait Implementations

impl Clone for SstMetadata

fn clone(&self) -> SstMetadata

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SstMetadata

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

Formats the value using the given formatter.

impl Default for SstMetadata

fn default() -> Self

Returns the “default value” for a type.

impl<'prototk> FieldPackHelper<'prototk, message<SstMetadata>> for SstMetadata

fn field_pack_sz(&self, tag: &Tag) -> usize

The size of encoding self with tag.

fn field_pack(&self, tag: &Tag, out: &mut [u8])

Pack the tag into the output buffer.

impl<'prototk> FieldUnpackHelper<'prototk, message<SstMetadata>> for SstMetadata

fn merge_field(&mut self, proto: message<SstMetadata>)

Merge the proto into self.

impl From<message<SstMetadata>> for SstMetadata

fn from(proto: message<Self>) -> Self

Converts to this type from the input type.

impl Ord for SstMetadata

fn cmp(&self, other: &SstMetadata) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl Packable for SstMetadata

fn pack_sz(&self) -> usize

pack_sz returns the number of bytes required to serialize the Packable object.

fn pack(&self, buf: &mut [u8])

pack fills in the buffer out with the packed binary representation of the Packable object. The implementor is responsible to ensure that out is exactly pack_sz() bytes and implementations are encouraged to assert this.

fn stream<W: Write>(&self, writer: &mut W) -> Result<usize, Error>

stream writes the object to the provided writer using the same representation that would be used in a call to pack. The implementor is responsible for making sure that the number of bytes written is exactly equal to the number of required bytes.

impl PartialEq for SstMetadata

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for SstMetadata

fn partial_cmp(&self, other: &SstMetadata) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'prototk> Unpackable<'prototk> for SstMetadata

type Error = Error

Type of error this unpackable returns.

fn unpack<'b>(buf: &'b [u8]) -> Result<(Self, &'b [u8]), Error>

where 'b: 'prototk,

unpack attempts to return an Unpackable object stored in a prefix of buf. The method returns the result and remaining unused buffer.

impl Eq for SstMetadata

impl<'prototk> Message<'prototk> for SstMetadata

impl StructuralPartialEq for SstMetadata