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use kube::{
api::{Patch, PatchParams},
Api, Error,
};
use serde::de::DeserializeOwned;
use serde_json::{json, Value};
pub const FINALIZER: &str = "restic.anshulg.com/finalizer";
/// Adds a finalizer to the given resource.
pub async fn add<K>(api: &Api<K>, name: &str) -> Result<K, Error>
where
K: Clone + DeserializeOwned + std::fmt::Debug,
{
let finalizer: Value = json!({
"metadata": {
"finalizers": [FINALIZER]
}
});
let patch = Patch::Merge(&finalizer);
api.patch(name, &PatchParams::default(), &patch).await
}
/// Removes all finalizers from the given resource.
pub async fn remove<K>(api: &Api<K>, name: &str) -> Result<K, Error>
where
K: Clone + DeserializeOwned + std::fmt::Debug,
{
let finalizer: Value = json!({
"metadata": {
"finalizers": null
}
});
let patch = Patch::Merge(&finalizer);
api.patch(name, &PatchParams::default(), &patch).await
}
#[cfg(test)]
mod tests {
use k8s_openapi::api::core::v1::ConfigMap;
use kube::{api::ObjectMeta, Client, ResourceExt};
use super::*;
#[tokio::test]
#[cfg_attr(
not(feature = "integration-tests"),
ignore = "uses k8s current-context"
)]
async fn test_finalizer() {
let client = Client::try_default().await.unwrap();
let api: Api<ConfigMap> = Api::namespaced(client, "default");
// Create a test ConfigMap
let cm = ConfigMap {
metadata: ObjectMeta {
name: Some("test-finalizer-add".to_string()),
..Default::default()
},
..Default::default()
};
let cm = api.create(&Default::default(), &cm).await.unwrap();
// Check for no finalizers
assert!(cm.metadata.finalizers.is_none());
// Add the finalizer
let cm = add(&api, &cm.name_any()).await.unwrap();
// Check for the finalizer
assert_eq!(cm.metadata.finalizers, Some(vec![FINALIZER.to_string()]));
// Remove the finalizer
let cm = remove(&api, &cm.name_any()).await.unwrap();
// Check for no finalizers
assert!(cm.metadata.finalizers.is_none());
// Clean up
api.delete(&cm.name_any(), &Default::default())
.await
.unwrap();
}
}
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