Add helper methods: kind and list_kind for typeMeta

Signed-off-by: Danil Grigorev <[email protected]>

kube-core/src/metadata.rs

@@ -17,6 +17,42 @@ pub struct TypeMeta {
     pub kind: String,
 }
 
+impl TypeMeta {
+    /// Construct a new `TypeMeta` for the object list from the given resource.
+    ///
+    /// ```
+    /// # use k8s_openapi::api::core::v1::Pod;
+    /// # use kube_core::TypeMeta;
+    ///
+    /// let type_meta = TypeMeta::list_kind::<Pod>();
+    /// assert_eq!(type_meta.kind, "PodList");
+    /// assert_eq!(type_meta.api_version, "v1");
+    /// ```
+    pub fn list_kind<K: Resource<DynamicType = ()>>() -> Self {
+        TypeMeta {
+            api_version: K::api_version(&()).into(),
+            kind: K::kind(&()).to_string() + "List",
+        }
+    }
+
+    /// Construct a new `TypeMeta` for the object from the given resource.
+    ///
+    /// ```
+    /// # use k8s_openapi::api::core::v1::Pod;
+    /// # use kube_core::TypeMeta;
+    ///
+    /// let type_meta = TypeMeta::kind::<Pod>();
+    /// assert_eq!(type_meta.kind, "Pod");
+    /// assert_eq!(type_meta.api_version, "v1");
+    /// ```
+    pub fn kind<K: Resource<DynamicType = ()>>() -> Self {
+        TypeMeta {
+            api_version: K::api_version(&()).into(),
+            kind: K::kind(&()).into(),
+        }
+    }
+}
+
 /// A generic representation of any object with `ObjectMeta`.
 ///
 /// It allows clients to get access to a particular `ObjectMeta`

kube-core/src/object.rs

@@ -54,11 +54,12 @@ impl<T: Clone> ObjectList<T> {
     ///
     /// ```
     /// use kube::api::{ListMeta, ObjectList, TypeMeta};
+    /// use k8s_openapi::api::core::v1::Pod;
     ///
-    /// let types: TypeMeta = Default::default();
+    /// let types: TypeMeta = TypeMeta::list_kind::<Pod>();
     /// let metadata: ListMeta = Default::default();
     /// let items = vec![1, 2, 3];
-    /// let objectlist = ObjectList { types, metadata, items };
+    /// # let objectlist = ObjectList { types, metadata, items };
     ///
     /// let first = objectlist.iter().next();
     /// println!("First element: {:?}", first); // prints "First element: Some(1)"
@@ -73,11 +74,12 @@ impl<T: Clone> ObjectList<T> {
     ///
     /// ```
     /// use kube::api::{ListMeta, ObjectList, TypeMeta};
+    /// use k8s_openapi::api::core::v1::Pod;
     ///
-    /// let types: TypeMeta = Default::default();
+    /// let types: TypeMeta = TypeMeta::list_kind::<Pod>();
     /// let metadata: ListMeta = Default::default();
     /// let items = vec![1, 2, 3];
-    /// let mut objectlist = ObjectList { types, metadata, items };
+    /// # let mut objectlist = ObjectList { types, metadata, items };
     ///
     /// let mut first = objectlist.iter_mut().next();
     ///