feat(controller/utils): add bunch of zeroizers

kuyaseg-controller/src/utils/mod.rs

@@ -1 +1 @@
-
+pub mod zeroizers;

kuyaseg-controller/src/utils/zeroizers.rs

@@ -0,0 +1,31 @@
+use zeroize::Zeroize;
+
+#[inline]
+pub fn zeroize_bytestring(this: &mut k8s_openapi::ByteString) {
+    this.0.zeroize();
+}
+
+#[inline]
+pub fn zeroize_btree<K, T: Zeroize>(this: &mut std::collections::BTreeMap<K, T>) {
+    this.values_mut().for_each(|v| v.zeroize());
+}
+
+#[inline]
+pub fn zeroize_btree_of_bytestring<K>(this: &mut std::collections::BTreeMap<K, k8s_openapi::ByteString>) {
+    this.values_mut().for_each(zeroize_bytestring);
+}
+
+#[inline]
+pub fn zeroize_hashmap<K, T: Zeroize>(this: &mut std::collections::HashMap<K, T>) {
+    this.values_mut().for_each(|v| v.zeroize());
+}
+
+#[inline]
+pub fn zeroize_k8s_secret(this: &mut k8s_openapi::api::core::v1::Secret) {
+    if let Some(data) = this.data.as_mut() {
+        zeroize_btree_of_bytestring(data);
+    }
+    if let Some(data) = this.string_data.as_mut() {
+        zeroize_btree(data);
+    }
+}