Merge pull request #12 from lilatomic/feature/crd-visualiser

Add visualiser for Kubernetes CRDs

Author: lilatomic

alpacloud/crdvis/crd.py

@@ -7,6 +7,7 @@
 
 import requests
 import yaml
+from pydantic import ValidationError
 
 from alpacloud.crdvis.models import CustomResourceDefinition
 
@@ -63,10 +64,26 @@ def read_path(path: str) -> CustomResourceDefinition:
 			except subprocess.SubprocessError as e:
 				error_msg = f"Failed to fetch CRDs {kubectl_crd}: {e}"
 			raise CRDReadError(error_msg)
+	elif "://" in path:
+		raise CRDReadError(f"Unsupported URL scheme: {path}")
 	else:
 		content = path
 
 	if not content:
 		raise CRDReadError("Empty content")
-	doc = yaml.safe_load(content)
-	return CustomResourceDefinition.model_validate(doc)
+
+	try:
+		doc = yaml.safe_load(content)
+	except yaml.YAMLError as e:
+		raise CRDReadError(f"CRD could not be loaded as YAML: {e}")
+
+	try:
+		return CustomResourceDefinition.model_validate(doc)
+	except ValidationError as e:
+		if isinstance(doc, str) and doc.count(".") >= 3:
+			raise CRDReadError(f"CRD content looks like a name, did you mean `kubectl://{content}`")
+		# escaping pydantic help message
+		# like "Input should be a valid dictionary or instance of CustomResourceDefinition [type=model_type, input_value='applications.argoproj.io', input_type=str]"
+		# for rich
+		msg = str(e).replace("[", r"\[")
+		raise CRDReadError(f"CRD could not be validated: {msg}")

alpacloud/crdvis/vis.py

@@ -405,7 +405,7 @@ async def _focus_to_node(self, node: TreeNode) -> None:
 			parent.expand()
 			parent = parent.parent
 
-		tree.select_node(node)
+		tree.move_cursor(node)
 
 	async def action_goto(self) -> None:
 		findbox = self.query_one(FindBox)