from_yaml fallbacks to anonymous connection

Fix #6

README.org

@@ -73,7 +73,8 @@ password: MYPASSWORD
 #+END_EXAMPLE
 
 #+BEGIN_hint
-Inside Grid'5000, you'l probably need to set ~verify_ssl: False~
+From a Grid'5000 frontend this file is optionnal. In all other cases the
+configuration file is mandatory.
 #+END_hint
 
 - Using a virtualenv is recommended (python 3.5+ is required)

README.rst

@@ -76,7 +76,8 @@ conform with the Grid5000 API models (with an ’s’!)
 
 .. hint::
 
-    Inside Grid’5000, you’l probably need to set ``verify_ssl: False``
+    From a Grid’5000 frontend this file is optionnal. In all other cases the
+    configuration file is mandatory.
 
 - Using a virtualenv is recommended (python 3.5+ is required)
 

examples/vlan_set_2.py

@@ -11,7 +11,7 @@ logging.basicConfig(level=logging.DEBUG)
 def _to_network_address(host, interface):
     """Translate a host to a network address
     e.g:
-    paranoia-20.rennes.grid5000.fr -> paranoia-20-eth2.rennes.grid5000.fr
+    paravance-20.rennes.grid5000.fr -> paravance-20-eth2.rennes.grid5000.fr
     """
     splitted = host.split('.')
     splitted[0] = splitted[0] + "-" + interface
@@ -26,7 +26,7 @@ site = gk.sites["rennes"]
 
 job = site.jobs.create({"name": "pyg5k",
                         "command": "sleep 3600",
-                        "resources": "{type='kavlan'}/vlan=1+{cluster='paranoia'}nodes=1",
+                        "resources": "{type='kavlan'}/vlan=1+{cluster='paravance'}nodes=1",
                         "types": ["deploy"]
 })
 

grid5000/__init__.py

@@ -91,9 +91,16 @@ class Grid5000(object):
 
     @classmethod
     def from_yaml(cls, yaml_file):
-        with open(yaml_file, "r") as f:
-            conf = yaml.load(f)
-        return cls(**conf)
+        try:
+            with open(yaml_file, "r") as f:
+                conf = yaml.load(f)
+                return cls(**conf)
+        except Exception as e:
+            logging.warn(e)
+            logging.info(
+                "...Falling back to anonymous connection"
+            )
+            return cls()
 
     def __enter__(self):
         return self

grid5000/__version__.py

-__version__ = "0.1.2"
+__version__ = "0.1.2"
\ No newline at end of file

tox.ini

@@ -31,3 +31,4 @@ ignore = E121,E122,E123,E124,E125,E127,E128,E129,E131,E241,H405,F821,W503,F405
 show-source = true
 exclude = venv,.git,.tox,dist,*egg,ansible,tests
 max-complexity = 12
+max-line-length = 88