Struct FnMigration 

pub struct FnMigration<Ctx, F, R>
where
    F: Fn(&mut Ctx) -> Result<()> + Send + Sync,
    R: Fn(&mut Ctx) -> Result<()> + Send + Sync,
{ /* private fields */ }

Builder for creating simple migrations with closures

Implementations

impl<Ctx, F> FnMigration<Ctx, F, fn(&mut Ctx) -> Result<()>>

where F: Fn(&mut Ctx) -> Result<()> + Send + Sync,

pub fn new(version: u64, name: impl Into<String>, apply_fn: F) -> Self

impl<Ctx, F, R> FnMigration<Ctx, F, R>

where F: Fn(&mut Ctx) -> Result<()> + Send + Sync, R: Fn(&mut Ctx) -> Result<()> + Send + Sync,

pub fn phase(self, phase: Phase) -> Self

Set the deployment phase

pub fn with_rollback<R2>(self, rollback_fn: R2) -> FnMigration<Ctx, F, R2>

where R2: Fn(&mut Ctx) -> Result<()> + Send + Sync,

Trait Implementations

impl<Ctx, F, R> Migration<Ctx> for FnMigration<Ctx, F, R>

where F: Fn(&mut Ctx) -> Result<()> + Send + Sync, R: Fn(&mut Ctx) -> Result<()> + Send + Sync,

fn version(&self) -> u64

Unique version number (must be sequential: 1, 2, 3, …)

fn name(&self) -> &str

Human-readable name for this migration

fn phase(&self) -> Phase

Deployment phase (pre-deploy or post-deploy)

fn apply(&self, ctx: &mut Ctx) -> Result<()>

Apply the migration

fn rollback(&self, ctx: &mut Ctx) -> Result<()>

Rollback the migration (optional)

fn can_rollback(&self) -> bool

Whether this migration supports rollback