Gracefully handle API connect timeouts

Prevents dumping a massive stacktrace if connection fails.

client-cli/cli_lib/common.py

@@ -31,12 +31,15 @@ def call_api(config, operation, request_uri, params=None, data=None):
         config['api_prefix'],
         request_uri
     )
+
     # Craft the authentication header if required
     if config['api_key']:
         headers = {'X-Api-Key': config['api_key']}
     else:
         headers = None
+
     # Determine the request type and hit the API
+    try:
         if operation == 'get':
             response = requests.get(
                 uri,
@@ -72,12 +75,17 @@ def call_api(config, operation, request_uri, params=None, data=None):
                 params=params,
                 data=data
             )
+    except Exception as e:
+        click.echo('Failed to connect to the API: {}'.format(e))
+        exit(1)
+
     # Display debug output
     if config['debug']:
         click.echo('API endpoint: {}'.format(uri), err=True)
         click.echo('Response code: {}'.format(response.status_code), err=True)
         click.echo('Response headers: {}'.format(response.headers), err=True)
         click.echo(err=True)
+
     # Return the response object
     return response
 

client-cli/pvc.py

@@ -33,7 +33,6 @@ import colorama
 import yaml
 import json
 import lxml.etree as etree
-import requests
 
 from distutils.util import strtobool