--- /dev/null
+from types import StringTypes
+import time
+import re
+
+from PLC.Faults import *
+from PLC.Parameter import Parameter, Mixed
+from PLC.Filter import Filter
+from PLC.Debug import profile
+from PLC.Table import Row, Table
+from PLC.SliceInstantiations import SliceInstantiation, SliceInstantiations
+from PLC.Nodes import Node
+from PLC.Persons import Person, Persons
+from PLC.SliceAttributes import SliceAttribute
+
+class Slice(Row):
+ """
+ Representation of a row in the slices table. To use, optionally
+ instantiate with a dict of values. Update as you would a
+ dict. Commit to the database with sync().To use, instantiate
+ with a dict of values.
+ """
+
+ table_name = 'slices'
+ primary_key = 'slice_id'
+ join_tables = ['slice_node', 'slice_person', 'slice_attribute', 'peer_slice', 'node_slice_whitelist']
+ fields = {
+ 'slice_id': Parameter(int, "Slice identifier"),
+ 'site_id': Parameter(int, "Identifier of the site to which this slice belongs"),
+ 'name': Parameter(str, "Slice name", max = 32),
+ 'instantiation': Parameter(str, "Slice instantiation state"),
+ 'url': Parameter(str, "URL further describing this slice", max = 254, nullok = True),
+ 'description': Parameter(str, "Slice description", max = 2048, nullok = True),
+ 'max_nodes': Parameter(int, "Maximum number of nodes that can be assigned to this slice"),
+ 'creator_person_id': Parameter(int, "Identifier of the account that created this slice"),
+ 'created': Parameter(int, "Date and time when slice was created, in seconds since UNIX epoch", ro = True),
+ 'expires': Parameter(int, "Date and time when slice expires, in seconds since UNIX epoch"),
+ 'node_ids': Parameter([int], "List of nodes in this slice", ro = True),
+ 'person_ids': Parameter([int], "List of accounts that can use this slice", ro = True),
+ 'slice_attribute_ids': Parameter([int], "List of slice attributes", ro = True),
+ 'peer_id': Parameter(int, "Peer to which this slice belongs", nullok = True),
+ 'peer_slice_id': Parameter(int, "Foreign slice identifier at peer", nullok = True),
+ }
+ related_fields = {
+ 'persons': [Mixed(Parameter(int, "Person identifier"),
+ Parameter(str, "Email address"))],
+ 'nodes': [Mixed(Parameter(int, "Node identifier"),
+ Parameter(str, "Fully qualified hostname"))]
+ }
+ # for Cache
+ class_key = 'name'
+ foreign_fields = ['instantiation', 'url', 'description', 'max_nodes', 'expires']
+ foreign_xrefs = [
+ {'field': 'node_ids' , 'class': 'Node', 'table': 'slice_node' },
+ {'field': 'person_ids', 'class': 'Person', 'table': 'slice_person'},
+ {'field': 'creator_person_id', 'class': 'Person', 'table': 'unused-on-direct-refs'},
+ {'field': 'site_id', 'class': 'Site', 'table': 'unused-on-direct-refs'},
+ ]
+ # forget about this one, it is read-only anyway
+ # handling it causes Cache to re-sync all over again
+ # 'created'
+
+ def validate_name(self, name):
+ # N.B.: Responsibility of the caller to ensure that login_base
+ # portion of the slice name corresponds to a valid site, if
+ # desired.
+
+ # 1. Lowercase.
+ # 2. Begins with login_base (letters or numbers).
+ # 3. Then single underscore after login_base.
+ # 4. Then letters, numbers, or underscores.
+ good_name = r'^[a-z0-9]+_[a-zA-Z0-9_]+$'
+ if not name or \
+ not re.match(good_name, name):
+ raise PLCInvalidArgument, "Invalid slice name"
+
+ conflicts = Slices(self.api, [name])
+ for slice in conflicts:
+ if 'slice_id' not in self or self['slice_id'] != slice['slice_id']:
+ raise PLCInvalidArgument, "Slice name already in use, %s"%name
+
+ return name
+
+ def validate_instantiation(self, instantiation):
+ instantiations = [row['instantiation'] for row in SliceInstantiations(self.api)]
+ if instantiation not in instantiations:
+ raise PLCInvalidArgument, "No such instantiation state"
+
+ return instantiation
+
+ validate_created = Row.validate_timestamp
+
+ def validate_expires(self, expires):
+ # N.B.: Responsibility of the caller to ensure that expires is
+ # not too far into the future.
+ check_future = not ('is_deleted' in self and self['is_deleted'])
+ return Row.validate_timestamp(self, expires, check_future = check_future)
+
+ add_person = Row.add_object(Person, 'slice_person')
+ remove_person = Row.remove_object(Person, 'slice_person')
+
+ add_node = Row.add_object(Node, 'slice_node')
+ remove_node = Row.remove_object(Node, 'slice_node')
+
+ add_to_node_whitelist = Row.add_object(Node, 'node_slice_whitelist')
+ delete_from_node_whitelist = Row.remove_object(Node, 'node_slice_whitelist')
+
+ def associate_persons(self, auth, field, value):
+ """
+ Adds persons found in value list to this slice (using AddPersonToSlice).
+ Deletes persons not found in value list from this slice (using DeletePersonFromSlice).
+ """
+
+ assert 'person_ids' in self
+ assert 'slice_id' in self
+ assert isinstance(value, list)
+
+ (person_ids, emails) = self.separate_types(value)[0:2]
+
+ # Translate emails into person_ids
+ if emails:
+ persons = Persons(self.api, emails, ['person_id']).dict('person_id')
+ person_ids += persons.keys()
+
+ # Add new ids, remove stale ids
+ if self['person_ids'] != person_ids:
+ from PLC.Methods.AddPersonToSlice import AddPersonToSlice
+ from PLC.Methods.DeletePersonFromSlice import DeletePersonFromSlice
+ new_persons = set(person_ids).difference(self['person_ids'])
+ stale_persons = set(self['person_ids']).difference(person_ids)
+
+ for new_person in new_persons:
+ AddPersonToSlice.__call__(AddPersonToSlice(self.api), auth, new_person, self['slice_id'])
+ for stale_person in stale_persons:
+ DeletePersonFromSlice.__call__(DeletePersonFromSlice(self.api), auth, stale_person, self['slice_id'])
+
+ def associate_nodes(self, auth, field, value):
+ """
+ Adds nodes found in value list to this slice (using AddSliceToNodes).
+ Deletes nodes not found in value list from this slice (using DeleteSliceFromNodes).
+ """
+
+ from PLC.Nodes import Nodes
+
+ assert 'node_ids' in self
+ assert 'slice_id' in self
+ assert isinstance(value, list)
+
+ (node_ids, hostnames) = self.separate_types(value)[0:2]
+
+ # Translate hostnames into node_ids
+ if hostnames:
+ nodes = Nodes(self.api, hostnames, ['node_id']).dict('node_id')
+ node_ids += nodes.keys()
+
+ # Add new ids, remove stale ids
+ if self['node_ids'] != node_ids:
+ from PLC.Methods.AddSliceToNodes import AddSliceToNodes
+ from PLC.Methods.DeleteSliceFromNodes import DeleteSliceFromNodes
+ new_nodes = set(node_ids).difference(self['node_ids'])
+ stale_nodes = set(self['node_ids']).difference(node_ids)
+
+ if new_nodes:
+ AddSliceToNodes.__call__(AddSliceToNodes(self.api), auth, self['slice_id'], list(new_nodes))
+ if stale_nodes:
+ DeleteSliceFromNodes.__call__(DeleteSliceFromNodes(self.api), auth, self['slice_id'], list(stale_nodes))
+ def associate_slice_attributes(self, auth, fields, value):
+ """
+ Deletes slice_attribute_ids not found in value list (using DeleteSliceAttribute).
+ Adds slice_attributes if slice_fields w/o slice_id is found (using AddSliceAttribute).
+ Updates slice_attribute if slice_fields w/ slice_id is found (using UpdateSlceiAttribute).
+ """
+
+ assert 'slice_attribute_ids' in self
+ assert isinstance(value, list)
+
+ (attribute_ids, blank, attributes) = self.separate_types(value)
+
+ # There is no way to add attributes by id. They are
+ # associated with a slice when they are created.
+ # So we are only looking to delete here
+ if self['slice_attribute_ids'] != attribute_ids:
+ from PLC.Methods.DeleteSliceAttribute import DeleteSliceAttribute
+ stale_attributes = set(self['slice_attribute_ids']).difference(attribute_ids)
+
+ for stale_attribute in stale_attributes:
+ DeleteSliceAttribute.__call__(DeleteSliceAttribute(self.api), auth, stale_attribute['slice_attribute_id'])
+
+ # If dictionary exists, we are either adding new
+ # attributes or updating existing ones.
+ if attributes:
+ from PLC.Methods.AddSliceAttribute import AddSliceAttribute
+ from PLC.Methods.UpdateSliceAttribute import UpdateSliceAttribute
+
+ added_attributes = filter(lambda x: 'slice_attribute_id' not in x, attributes)
+ updated_attributes = filter(lambda x: 'slice_attribute_id' in x, attributes)
+
+ for added_attribute in added_attributes:
+ if 'attribute_type' in added_attribute:
+ type = added_attribute['attribute_type']
+ elif 'attribute_type_id' in added_attribute:
+ type = added_attribute['attribute_type_id']
+ else:
+ raise PLCInvalidArgument, "Must specify attribute_type or attribute_type_id"
+
+ if 'value' in added_attribute:
+ value = added_attribute['value']
+ else:
+ raise PLCInvalidArgument, "Must specify a value"
+
+ if 'node_id' in added_attribute:
+ node_id = added_attribute['node_id']
+ else:
+ node_id = None
+
+ if 'nodegroup_id' in added_attribute:
+ nodegroup_id = added_attribute['nodegroup_id']
+ else:
+ nodegroup_id = None
+
+ AddSliceAttribute.__call__(AddSliceAttribute(self.api), auth, self['slice_id'], type, value, node_id, nodegroup_id)
+ for updated_attribute in updated_attributes:
+ attribute_id = updated_attribute.pop('slice_attribute_id')
+ if attribute_id not in self['slice_attribute_ids']:
+ raise PLCInvalidArgument, "Attribute doesnt belong to this slice"
+ else:
+ UpdateSliceAttribute.__call__(UpdateSliceAttribute(self.api), auth, attribute_id, updated_attribute)
+
+ def sync(self, commit = True):
+ """
+ Add or update a slice.
+ """
+
+ # Before a new slice is added, delete expired slices
+ if 'slice_id' not in self:
+ expired = Slices(self.api, expires = -int(time.time()))
+ for slice in expired:
+ slice.delete(commit)
+
+ Row.sync(self, commit)
+
+ def delete(self, commit = True):
+ """
+ Delete existing slice.
+ """
+
+ assert 'slice_id' in self
+
+ # Clean up miscellaneous join tables
+ for table in self.join_tables:
+ self.api.db.do("DELETE FROM %s WHERE slice_id = %d" % \
+ (table, self['slice_id']))
+
+ # Mark as deleted
+ self['is_deleted'] = True
+ self.sync(commit)
+
+
+class Slices(Table):
+ """
+ Representation of row(s) from the slices table in the
+ database.
+ """
+
+ def __init__(self, api, slice_filter = None, columns = None, expires = int(time.time())):
+ Table.__init__(self, api, Slice, columns)
+
+ sql = "SELECT %s FROM view_slices WHERE is_deleted IS False" % \
+ ", ".join(self.columns)
+
+ if expires is not None:
+ if expires >= 0:
+ sql += " AND expires > %d" % expires
+ else:
+ expires = -expires
+ sql += " AND expires < %d" % expires
+
+ if slice_filter is not None:
+ if isinstance(slice_filter, (list, tuple, set)):
+ # Separate the list into integers and strings
+ ints = filter(lambda x: isinstance(x, (int, long)), slice_filter)
+ strs = filter(lambda x: isinstance(x, StringTypes), slice_filter)
+ slice_filter = Filter(Slice.fields, {'slice_id': ints, 'name': strs})
+ sql += " AND (%s) %s" % slice_filter.sql(api, "OR")
+ elif isinstance(slice_filter, dict):
+ slice_filter = Filter(Slice.fields, slice_filter)
+ sql += " AND (%s) %s" % slice_filter.sql(api, "AND")
+ elif isinstance (slice_filter, StringTypes):
+ slice_filter = Filter(Slice.fields, {'name':[slice_filter]})
+ sql += " AND (%s) %s" % slice_filter.sql(api, "AND")
+ elif isinstance (slice_filter, int):
+ slice_filter = Filter(Slice.fields, {'slice_id':[slice_filter]})
+ sql += " AND (%s) %s" % slice_filter.sql(api, "AND")
+ else:
+ raise PLCInvalidArgument, "Wrong slice filter %r"%slice_filter
+
+ self.selectall(sql)
git://git.onelab.eu / plcapi.git / blobdiff