def migrate_nodes(self, kwargs):
"""
Migrate nodes from one cloud to another.
Parameters
----------
nodes : list of dict with keys
from_cloud : string
name of origin cloud
vmid : string
identifier of the node to migrate inside the origin cloud
to_cloud : string
name of destination cloud
delay : int
(optional with default value to 0) time in seconds to delay
the removal of the old node. 0 means "remove old node as
soon as the new node is up", 60 means "remove old node
after 60 seconds after the new node is up". Useful to keep
the old node active while the DNS and its caches that
still have the IP address of the old node are updated
to the IP address of the new node.
"""
try:
exp_keys = ['from_cloud', 'vmid', 'to_cloud']
exp_params = [('nodes', is_list_dict2(exp_keys)),
('delay', is_pos_nul_int, 0)]
nodes, delay = check_arguments(exp_params, kwargs)
self.check_state([self.S_RUNNING])
except Exception, ex:
return HttpErrorResponse('%s' % ex)
def test_check_arguments(self):
## No parameters
exp_params = []
args = {}
parsed_args = check_arguments(exp_params, args)
self.assertEqual(parsed_args, [])
# One single integer parameter
exp_params = [('name1', is_int)]
args = {'name1': 3}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, 3)
# Missing one parameter
exp_params = [('name1', is_int)]
args = {}
self.assertRaises(Exception, check_arguments, exp_params, args)
# Wrong type
exp_params = [('name1', is_int)]
args = {'name1': 'value'}
self.assertRaises(Exception, check_arguments, exp_params, args)
# One single string parameter
exp_params = [('name1', is_string)]
args = {'name1': 'value'}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, 'value')
exp_params = [('name1', is_string)]
args = {'name1': u'value'}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, 'value')
# An integer when a string was expected
exp_params = [('name1', is_string)]
args = {'name1': 3}
self.assertRaises(Exception, check_arguments, exp_params, args)
# A positive integer
exp_params = [('name1', is_pos_int)]
args = {'name1': 3}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, 3)
# A positive integer
exp_params = [('name1', is_pos_int)]
args = {'name1': -3}
self.assertRaises(Exception, check_arguments, exp_params, args)
# A positive integer
exp_params = [('name1', is_pos_int)]
args = {'name1': 0}
self.assertRaises(Exception, check_arguments, exp_params, args)
# A positive or null integer
exp_params = [('name1', is_pos_nul_int)]
args = {'name1': 3}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, 3)
# A positive or null integer
exp_params = [('name1', is_pos_nul_int)]
args = {'name1': -3}
self.assertRaises(Exception, check_arguments, exp_params, args)
# A positive or null integer
exp_params = [('name1', is_pos_nul_int)]
args = {'name1': 0}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, 0)
# Extra unknown parameter
exp_params = [('name1', is_int)]
args = {'name1': 3, 'name2': 'value'}
self.assertRaises(Exception, check_arguments, exp_params, args)
# Default value
exp_params = [('name1', is_int, 5)]
args = {}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, 5)
# Mix of mandatory args and optional ones
exp_params = [('name1', is_int, 5), ('name2', is_int)]
args = {'name2': 7}
name1, name2 = check_arguments(exp_params, args)
self.assertEqual(name1, 5)
self.assertEqual(name2, 7)
# Check uploaded file type
exp_params = [('uploaded_file', is_uploaded_file)]
filename = 'myfile.txt'
filecontent = 'file'
args = {'uploaded_file': FileUploadField(filename, filecontent)}
uploaded_file = check_arguments(exp_params, args)
self.assertEqual(uploaded_file.filename, filename)
self.assertEqual(uploaded_file.file, filecontent)
# Check in_list constraint
exp_params = [('name1', is_in_list([3, 5, 6]))]
args = {'name1': 6}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, 6)
# Check not in_list constraint
exp_params = [('name1', is_in_list([3, 5, 6]))]
args = {'name1': 1}
self.assertRaises(Exception, check_arguments, exp_params, args)
# Check is_list constraint
exp_params = [('name1', is_list)]
mylist = [3, 'a']
args = {'name1': mylist}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, mylist)
# Check is_dict constraint
exp_params = [('name1', is_dict)]
mydict = {'key': 3}
args = {'name1': mydict}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, mydict)
# Check is_dict2 constraint
exp_params = [('name1', is_dict2(["key"]))]
mydict = {'key': 3}
args = {'name1': mydict}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, mydict)
# Check is_dict2 constraint
exp_params = [('name1', is_dict2(["key"], ["optkey"]))]
mydict = {'key': 3}
args = {'name1': mydict}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, mydict)
# Check is_dict2 constraint: missing mandatory
exp_params = [('name1', is_dict2(["key"], ["optkey"]))]
mydict = {'optkey': 3}
args = {'name1': mydict}
self.assertRaisesRegexp(Exception, ".*expecting key.*", check_arguments, exp_params, args)
# Check is_dict2 constraint: extra unknown key
exp_params = [('name1', is_dict2(["key"], ["optkey"]))]
mydict = {'key': 42, 'optkey': 3, 'newkey': 'great value'}
args = {'name1': mydict}
self.assertRaisesRegexp(Exception, ".*Unexpected key.*", check_arguments, exp_params, args)
# Check is_list_dict constraint
exp_params = [('name1', is_list_dict)]
mylistdict = [{'key': 3}]
args = {'name1': mylistdict}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, mylistdict)
# Check is_list_dict2 constraint
exp_params = [('name1', is_list_dict2(['key']))]
mylistdict = [{'key': 3}, {'key': 56}]
args = {'name1': mylistdict}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, mylistdict)
# Check is_list_dict2 constraint
exp_params = [('name1', is_list_dict2(['key']))]
mylistdict = [{'key': 3}, {'key': 56, 'nokey': 42}]
args = {'name1': mylistdict}
self.assertRaisesRegexp(Exception, ".*Unexpected key.*", check_arguments, exp_params, args)
# Try with a JSON conversion first
# Check is_list constraint
exp_params = [('name1', is_list)]
mylist = unicode('[3, "a"]')
mylist = json.loads(mylist)
args = {'name1': mylist}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, mylist)
# Check is_dict constraint
exp_params = [('name1', is_dict)]
mydict = unicode('{"key": 3}')
mydict = json.loads(mydict)
args = {'name1': mydict}
name1 = check_arguments(exp_params, args)
self.assertEqual(name1, mydict)
