Merge pull request #6265 from franckcuny/gce-fixes

Add credential parameters to the GCE modules.

lib/ansible/module_utils/gce.py

@@ -0,0 +1,41 @@
+USER_AGENT_PRODUCT="Ansible-gce"
+USER_AGENT_VERSION="v1"
+
+def gce_connect(module):
+    """Return a Google Cloud Engine connection."""
+    service_account_email = module.params.get('service_account_email', None)
+    pem_file = module.params.get('pem_file', None)
+    project_id = module.params.get('project_id', None)
+
+    if service_account_email is None or pem_file is None:
+        # Load in the libcloud secrets file
+        try:
+            import secrets
+        except ImportError:
+            secrets = None
+
+        service_account_email, pem_file = getattr(secrets, 'GCE_PARAMS', (None, None))
+        keyword_params = getattr(secrets, 'GCE_KEYWORD_PARAMS', {})
+        project_id = keyword_params.get('project', None)
+
+    if service_account_email is None or pem_file is None or project_id is None:
+        module.fail_json(msg='Missing GCE connection parameters in libcloud secrets file.')
+        return None
+
+    try:
+        gce = get_driver(Provider.GCE)(service_account_email, pem_file, datacenter=module.params.get('zone'), project=project_id)
+        gce.connection.user_agent_append("%s/%s" % (
+            USER_AGENT_PRODUCT, USER_AGENT_VERSION))
+    except (RuntimeError, ValueError), e:
+        module.fail_json(msg=str(e), changed=False)
+    except Exception, e:
+        module.fail_json(msg=unexpected_error_msg(e), changed=False)
+
+    return gce
+
+def unexpected_error_msg(error):
+    """Create an error string based on passed in error."""
+    msg='Unexpected response: HTTP return_code['
+    msg+='%s], API error code[%s] and message: %s' % (
+        error.http_code, error.code, str(error.value))
+    return msg