Struct VersionFile 

pub struct VersionFile {
    pub version: u32,
    pub migrated_at: String,
}

Schema version metadata stored in <dir>/version.json.

Fields

version: u32

Current schema version of the data in this directory.

migrated_at: String

RFC 3339 timestamp of the last migration.

Implementations

impl VersionFile

pub fn read(dir: &Path) -> Result<Option<Self>, StorageError>

Read from <dir>/version.json. Returns None if the file is absent (treated as version 0).

Errors

Returns StorageError if the file exists but cannot be parsed.

pub fn write(&self, dir: &Path) -> Result<(), StorageError>

Write to <dir>/version.json.

Errors

Returns StorageError::Io or StorageError::Json on failure.

Trait Implementations

impl Clone for VersionFile

fn clone(&self) -> VersionFile

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VersionFile

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for VersionFile

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for VersionFile

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

where __S: Serializer,

Serialize this value into the given Serde serializer.