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pub use core_model::*;
pub use context::*;
mod context {
use std::fmt;
use std::fmt::Display;
use std::collections::HashMap;
pub type DefaultMetadataContext = MetadataContext<String>;
pub trait MetadataItem: Clone + Default + fmt::Debug + PartialEq {
type UId: PartialEq;
fn uid(&self) -> &Self::UId;
fn is_newer(&self, another: &Self) -> bool;
fn is_being_deleted(&self) -> bool {
false
}
fn set_labels<T: Into<String>>(self, _labels: Vec<(T, T)>) -> Self {
self
}
fn get_labels(&self) -> HashMap<String, String> {
HashMap::new()
}
}
pub trait MetadataRevExtension: MetadataItem {
fn next_rev(&self) -> Self;
}
impl MetadataItem for u32 {
type UId = u32;
fn uid(&self) -> &Self::UId {
&self
}
fn is_newer(&self, another: &Self) -> bool {
self > another
}
}
impl MetadataItem for u64 {
type UId = u64;
fn uid(&self) -> &Self::UId {
&self
}
fn is_newer(&self, another: &Self) -> bool {
self > another
}
}
#[derive(Default, Debug, Clone, PartialEq)]
pub struct MetadataContext<C> {
item: C,
owner: Option<C>,
}
impl<C> From<C> for MetadataContext<C> {
fn from(item: C) -> Self {
Self { item, owner: None }
}
}
impl<C> MetadataContext<C> {
pub fn new(item: C, owner: Option<C>) -> Self {
Self { item, owner }
}
pub fn item(&self) -> &C {
&self.item
}
pub fn item_mut(&mut self) -> &mut C {
&mut self.item
}
pub fn item_owned(self) -> C {
self.item
}
pub fn owner(&self) -> Option<&C> {
self.owner.as_ref()
}
pub fn set_owner(&mut self, ctx: C) {
self.owner = Some(ctx);
}
}
impl<C> MetadataContext<C>
where
C: MetadataItem,
{
pub fn create_child(&self) -> Self {
Self {
item: C::default(),
owner: Some(self.item.clone()),
}
}
pub fn set_labels<T: Into<String>>(self, labels: Vec<(T, T)>) -> Self {
Self {
item: self.item.set_labels(labels),
owner: self.owner,
}
}
}
impl<C> MetadataContext<C>
where
C: MetadataRevExtension,
{
pub fn next_rev(&self) -> Self {
Self::new(self.item.next_rev(), None)
}
}
impl<C> Display for MetadataContext<C>
where
C: MetadataItem,
{
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "{:#?}", self.item)
}
}
}
mod core_model {
use std::fmt::Debug;
use std::hash::Hash;
pub trait MetadataStoreDriver {
type Metadata;
}
pub trait Spec: Default + Debug + Clone + PartialEq {
const LABEL: &'static str;
type Status: Status;
type Owner: Spec;
type IndexKey: Debug + Eq + Hash + Clone + ToString;
}
pub trait Status: Default + Debug + Clone + PartialEq {}
pub trait Removable {
type DeleteKey;
}
pub trait Creatable {}
pub struct MetadataObj<S, P>
where
P: MetadataStoreDriver,
S: Spec,
{
pub name: String,
pub metadata: P::Metadata,
pub spec: S,
pub status: S::Status,
}
}