Draft: Custom resource wrapper

Contains the custom resource wrapper for later.

• Fix #203 (closed)

theodolite-quarkus/src/main/kotlin/theodolite/k8s/K8sCustomResourceWrapper.kt

+package theodolite.k8s
+
+import io.fabric8.kubernetes.client.CustomResource
+import io.fabric8.kubernetes.client.NamespacedKubernetesClient
+import io.fabric8.kubernetes.client.dsl.base.CustomResourceDefinitionContext
+
+/**
+ * Fabric8 handles custom resources as plain HashMaps. These need to be handled differently than normal
+ * Kubernetes resources.  The K8sCustomResourceWrapper class provides a wrapper to deploy and delete
+ * custom resources in a uniform way.
+ *
+ * @property map custom resource as plain hashmap
+ * @constructor Create empty K8s custom resource wrapper
+ */
+class K8sCustomResourceWrapper(private val map: Map<String, String>) : CustomResource() {
+
+
+    /**
+     * Deploy a custom resource
+     *
+     * @param client a namespaced Kubernetes client which are used to deploy the CR object.
+     */
+    fun deploy(client: NamespacedKubernetesClient) {
+        val kind = this.map["kind"]
+        // Search the CustomResourceDefinition to which the CR Object belongs.
+        // This should be exactly one if the CRD is registered for Kubernetes, zero otherwise.
+        val crds = client.apiextensions().v1beta1().customResourceDefinitions().list()
+        crds.items
+            .filter { crd -> crd.toString().contains("kind=$kind") }
+            .map { crd -> CustomResourceDefinitionContext.fromCrd(crd) }
+            .forEach { context ->
+                client.customResource(context)
+                    .createOrReplace(client.configuration.namespace, this.map as Map<String, Any>)
+            }
+    }
+
+    /**
+     * Delete a custom resource
+     *
+     * @param client a namespaced Kubernetes client which are used to delete the CR object.
+     */
+    fun delete(client: NamespacedKubernetesClient) {
+        val kind = this.map["kind"]
+        val metadata = this.map["metadata"] as HashMap<String, String>
+        val name = metadata["name"]
+
+        val crds = client.apiextensions().v1beta1().customResourceDefinitions().list()
+        crds.items
+            .filter { crd -> crd.toString().contains("kind=$kind") }
+            .map { crd -> CustomResourceDefinitionContext.fromCrd(crd) }
+            .forEach { context ->
+                client.customResource(context).delete(client.configuration.namespace, name)
+            }
+    }
+}