Struct MigrationStep 

pub struct MigrationStep {
    pub from: SchemaVersion,
    pub to: SchemaVersion,
    pub description: String,
    pub changes: Vec<FieldChange>,
}

A single migration step between adjacent versions.

Fields

from: SchemaVersion

Version this step migrates from.

to: SchemaVersion

Version this step migrates to.

description: String

Human-readable description of the migration.

changes: Vec<FieldChange>

Field changes applied by this step.

Implementations

impl MigrationStep

pub fn new( from: SchemaVersion, to: SchemaVersion, description: impl Into<String>, ) -> Self

Create a new migration step.

pub fn add_change(&mut self, change: FieldChange)

Add a field change to this step.

pub fn apply( &self, definition: &mut HashMap<String, String>, ) -> Result<(), MigrationError>

Apply this migration step to a workflow definition (key-value map).

Trait Implementations

impl Clone for MigrationStep

fn clone(&self) -> MigrationStep

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MigrationStep

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

Formats the value using the given formatter.