Struct CodecVersionUpgrade 

pub struct CodecVersionUpgrade { /* private fields */ }

One directed codec-version upgrade a component declares.

Mirrors crate::StateSchemaUpgrade exactly, on the codec-version axis rather than the application-schema axis: edges strictly increase the version and at most one edge may leave any version.

Implementations

impl CodecVersionUpgrade

pub fn new( from: CodecVersion, to: CodecVersion, apply: fn(&[u8]) -> Result<Vec<u8>, StateCodecError>, ) -> Result<Self, ComponentStateError>

Declares a directed upgrade between two codec versions.

Errors

Returns ComponentStateError::NonIncreasingCodecUpgrade when to does not exceed from.

pub const fn from(&self) -> CodecVersion

Returns the version this upgrade reads.

pub const fn to(&self) -> CodecVersion

Returns the version this upgrade produces.

Trait Implementations

impl Clone for CodecVersionUpgrade

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CodecVersionUpgrade

impl Debug for CodecVersionUpgrade

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

Formats the value using the given formatter.