Struct Migration 

pub struct Migration {
    pub version: u32,
    pub file: String,
    pub name: String,
    pub checksum: String,
    pub created: Option<String>,
    pub author: Option<String>,
    pub why: Option<String>,
    /* private fields */
}

Lightweight migration metadata — SQL content is stored from the initial read. The single file read that computed the checksum also supplies the raw SQL, eliminating any TOCTOU window between checksum computation and execution.

Fields

version: u32

file: String

name: String

Human-readable name derived from the filename (strip .sql suffix).

checksum: String

Lowercase hex SHA-256 of the FULL raw file content.

created: Option<String>

Authored date from the manifest entry.

author: Option<String>

Author from the manifest entry.

why: Option<String>

Implementations

impl Migration

pub fn up(&self) -> String

The UP section of this migration’s SQL (everything before -- DOWN ==).

Returns an owned String because the split is computed on demand from the stored raw content; there is no pre-split buffer to borrow from.

pub fn down(&self) -> Option<String>

The DOWN section of this migration’s SQL (everything after -- DOWN ==), or None if the file has no DOWN section.

Trait Implementations

impl Debug for Migration

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

Formats the value using the given formatter.