Struct Migration 

pub struct Migration {
    pub iri: String,
    pub from: ChartVersion,
    pub to: ChartVersion,
    pub configurations: Vec<(BTreeSet<String>, BTreeSet<String>)>,
    pub states: BTreeMap<String, String>,
    pub transform: Transform,
}

A declared migration between two chart versions: a configuration mapping and a datamodel transform. Configurations not listed explicitly map state by state through Migration::states, and a state not listed there maps to the state with the same id in the new version, if it has one (the derived identity mapping).

Fields

iri: String

The migration’s IRI.

from: ChartVersion

The version it migrates from.

to: ChartVersion

The version it migrates to.

configurations: Vec<(BTreeSet<String>, BTreeSet<String>)>

Explicit configuration mappings (old active state ids to new active state ids).

states: BTreeMap<String, String>

State renames applied to configurations without an explicit mapping.

transform: Transform

The datamodel transform.

Implementations

impl Migration

pub fn identity( iri: impl Into<String>, from: ChartVersion, to: ChartVersion, ) -> Self

A migration with only the derived identity mapping and an identity transform.

pub fn map_configuration<I: IntoIterator<Item = S>, S: Into<String>>( self, from: I, to: I, ) -> Self

This migration with an explicit configuration mapping.

pub fn rename_state( self, from: impl Into<String>, to: impl Into<String>, ) -> Self

This migration with a state rename.

pub fn with_transform( self, f: impl Fn(Value) -> Result<Value, String> + Send + Sync + 'static, ) -> Self

This migration with a datamodel transform.

pub fn map( &self, old: &BTreeSet<String>, to: &ChartInfo, ) -> Option<BTreeSet<String>>

The new configuration for old, or None when unmapped.

Trait Implementations

impl Clone for Migration

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Migration

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

Formats the value using the given formatter.