Struct MigrationTracker 

pub struct MigrationTracker { /* private fields */ }

Tracks applied migrations using a simple JSON file.

In a production implementation, this would be stored in the database itself as a projection. For now, we use a file-based tracker for simplicity.

Implementations

impl MigrationTracker

pub fn new(state_dir: impl Into<PathBuf>) -> Result<Self>

Creates a new migration tracker.

pub fn record_applied( &self, id: u32, name: String, checksum: String, ) -> Result<AppliedMigration>

Records a migration as applied.

pub fn list_applied(&self) -> Result<Vec<AppliedMigration>>

Lists all applied migrations.

pub fn is_applied(&self, id: u32) -> Result<bool>

Checks if a migration has been applied.

pub fn remove_applied(&self, id: u32) -> Result<()>

Removes a migration record (for rollback).

pub fn last_applied_id(&self) -> Result<Option<u32>>

Gets the last applied migration ID.