Add Rack Resiliency Module

cray/modules/rr/__init__.py

@@ -0,0 +1,5 @@
+# cray/modules/rr/__init__.py
+from .cli import cli  # <-- Explicitly import the CLI group
+
+def setup(main_cli):
+    main_cli.add_command(cli)  # <-- Add the renamed group to the main CLI

cray/modules/rr/cli.py

@@ -0,0 +1,40 @@
+import click
+import requests
+
+@click.group(name="rr", help="Rack Resiliency commands")
+def cli():
+    pass
+
+# Existing list command
+@cli.command(name="list", help="List rack resiliency information")
+def list_command():
+    click.echo("Hello World in the terminal")
+
+@cli.command(name="hello", help="Fetch greeting from HelloWorld API")
+@click.option('--name', '-n', default=None, help="Name for personalized greeting")
+@click.option('--external-ip', '-e', required=True, 
+             help="External IP of HelloWorld service (port 8080)")
+def hello_command(name, external_ip):
+    """Fetch greeting from /hello endpoint"""
+    base_url = f"http://{external_ip}:8080"
+    endpoint = f"{base_url}/hello"
+
+    try:
+        response = requests.get(
+            endpoint,
+            params={'name': name} if name else None,
+            timeout=5  # Add timeout
+        )
+        response.raise_for_status()
+
+        # Add JSON parsing validation
+        try:
+            data = response.json()
+            click.echo(f"Response: {data['message']}")
+        except ValueError:
+            click.echo(f"Invalid JSON response. Raw response: {response.text}", err=True)
+
+    except requests.exceptions.HTTPError as e:
+        click.echo(f"HTTP Error {e.response.status_code}: {e.response.text}", err=True)
+    except requests.exceptions.RequestException as e:
+        click.echo(f"Connection Error: {str(e)}", err=True)