Implement base operator (#1)

Add base operator logic

Reviewed-on: #1

src/secrets.rs

@@ -0,0 +1,64 @@
+use k8s_openapi::api::core::v1::Secret;
+use k8s_openapi::apimachinery::pkg::apis::meta::v1::ObjectMeta;
+use kube::api::PostParams;
+use kube::Api;
+use std::collections::BTreeMap;
+
+#[derive(thiserror::Error, Debug)]
+enum SecretError {
+    #[error("Secret has no data!")]
+    MissingData,
+    #[error("The key '{0}' is not present in the secret!")]
+    MissingKey(String),
+}
+
+/// Attempt to read a value contained in a secret. Returns an error in case
+/// of failure
+pub fn read_secret_str(s: &Secret, key: &str) -> anyhow::Result<String> {
+    let data = s.data.as_ref().ok_or(SecretError::MissingData)?;
+
+    let value = data
+        .get(key)
+        .ok_or(SecretError::MissingKey(key.to_string()))?;
+
+    Ok(String::from_utf8(value.0.clone())?)
+}
+
+/// Create a secret consisting only of string key / value pairs
+pub async fn create_secret(
+    secrets: &Api<Secret>,
+    name: &str,
+    values: BTreeMap<String, String>,
+) -> anyhow::Result<Secret> {
+    Ok(secrets
+        .create(
+            &PostParams::default(),
+            &Secret {
+                data: None,
+                immutable: None,
+                metadata: ObjectMeta {
+                    annotations: None,
+                    creation_timestamp: None,
+                    deletion_grace_period_seconds: None,
+                    deletion_timestamp: None,
+                    finalizers: None,
+                    generate_name: None,
+                    generation: None,
+                    labels: Some(BTreeMap::from([(
+                        "created-by".to_string(),
+                        "miniok8sbuckets".to_string(),
+                    )])),
+                    managed_fields: None,
+                    name: Some(name.to_string()),
+                    namespace: None,
+                    owner_references: None,
+                    resource_version: None,
+                    self_link: None,
+                    uid: None,
+                },
+                string_data: Some(values),
+                type_: None,
+            },
+        )
+        .await?)
+}