def verify_index(resource, parent, index_values, schema, idl):
'''
Verify if a resource exists in the DB Table using the index.
'''
if resource.table not in idl.tables:
return None
# check if we are dealing with key/value type of forward reference
kv_type = False
if parent is not None and parent.relation == OVSDB_SCHEMA_CHILD:
if schema.ovs_tables[parent.table].references[parent.column].kv_type:
kv_type = True
if kv_type:
# check in parent table that the index exists
app_log.debug('verifying key/value type reference')
row = utils.kv_index_to_row(index_values, parent, idl)
else:
dbtable = idl.tables[resource.table]
table_schema = schema.ovs_tables[resource.table]
row = utils.index_to_row(index_values, table_schema, dbtable)
return row
def verify_index(resource, parent, index_values, schema, idl):
if resource.table not in idl.tables:
return None
if parent.relation == OVSDB_SCHEMA_BACK_REFERENCE:
reference_keys = schema.ovs_tables[resource.table].references
_refCol = None
for key, value in reference_keys.iteritems():
if (value.relation == OVSDB_SCHEMA_PARENT
and value.ref_table == parent.table):
_refCol = key
break
if _refCol is None:
return False
dbtable = idl.tables[resource.table]
row = utils.index_to_row(index_values,
schema.ovs_tables[resource.table], dbtable)
if row.__getattr__(_refCol).uuid == parent.row:
return row
else:
return None
elif parent.relation == OVSDB_SCHEMA_TOP_LEVEL:
dbtable = idl.tables[resource.table]
table_schema = schema.ovs_tables[resource.table]
row = utils.index_to_row(index_values, table_schema, dbtable)
return row
else:
# check if we are dealing with key/value type of forward reference
kv_type = schema.ovs_tables[parent.table].references[
parent.column].kv_type
if kv_type:
# check in parent table that the index exists
app_log.debug('verifying key/value type reference')
row = utils.kv_index_to_row(index_values, parent, idl)
else:
dbtable = idl.tables[resource.table]
table_schema = schema.ovs_tables[resource.table]
row = utils.index_to_row(index_values, table_schema, dbtable)
return row
def setup_row(index_values, table, row_data, txn, reflist, schema, idl,
validator_adapter, errors, old_row=None):
# Initialize the flag for row to check if it is new row
is_new = False
# Check if row exists in DB
if old_row is not None:
row = old_row
else:
row = utils.index_to_row(index_values,
schema.ovs_tables[table],
idl.tables[table])
# Create a new row if not found in DB
if row is None:
if table in immutable_tables:
# Do NOT add row in Immutable table_data
return (None, False)
row = txn.insert(idl.tables[table])
is_new = True
# Routes are special case - only static routes can be updated
if table == 'Route':
if not is_new and row.__getattr__('from') != 'static':
return (None, False)
elif is_new:
row.__setattr__('from', 'static')
references = schema.ovs_tables[table].references
children = schema.ovs_tables[table].children
try:
request_type = REQUEST_TYPE_CREATE if is_new else REQUEST_TYPE_UPDATE
get_all_errors = True
# Check for back-references and remove it from the row data since
# it will be checked upon recursive call anyways.
_row_data = deepcopy(row_data)
for data in row_data:
if data in children and data not in references:
del _row_data[data]
results = verify.verify_config_data(_row_data, table, schema,
request_type, get_all_errors)
except DataValidationFailed as e:
errors.extend(e.detail)
config_rows = schema.ovs_tables[table].config
config_keys = config_rows.keys()
# Iterate over all config keys
for key in config_keys:
# Ignore if row is existing and column is immutable
if not is_new and not config_rows[key].mutable:
continue
# Set the column values from user config
if key not in row_data and not is_new:
empty_val = utils.get_empty_by_basic_type(row.__getattr__(key))
row.__setattr__(key, empty_val)
elif (key in row_data and
(is_new or row.__getattr__(key) != row_data[key])):
row.__setattr__(key, row_data[key])
# Delete all the keys that don't exist
for key in children:
child_table = references[key].ref_table \
if key in references else key
# Check if table is immutable
if child_table in immutable_tables:
if not is_new and (key not in row_data or not row_data[key]):
# Deep clean-up children, even if missing or empty,
# Ignore if immutable
if key in references:
kv_type = references[key].kv_type
if kv_type:
rowlist = row.__getattr__(key).values()
else:
rowlist = row.__getattr__(key)
clean_subtree(child_table, rowlist, txn, schema, idl,
validator_adapter)
else:
clean_subtree(child_table, [], txn, schema, idl,
validator_adapter, row)
continue
# forward child references
if key in references:
table_schema = schema.ovs_tables[table]
reference = table_schema.references[key]
kv_type = reference.kv_type
if not is_new and key not in row_data:
if kv_type:
row.__setattr__(key, {})
else:
row.__setattr__(key, [])
else:
# back-references
if child_table not in row_data:
new_data = {}
else:
new_data = row_data[child_table]
remove_deleted_rows(child_table, new_data, txn, schema, idl,
validator_adapter, row)
# set up children that exist
for key in children:
child_table = references[key].ref_table \
if key in references else key
if key in row_data:
if key in references:
# forward referenced children
table_schema = schema.ovs_tables[table]
reference = table_schema.references[key]
kv_type = reference.kv_type
kv_key_type = None
current_child_rows = {}
# Key-value type children (Dict type)
# Example - BGP_Router is KV-Type child of VRF
if kv_type:
kv_key_type = reference.kv_key_type
if not is_new:
current_child_rows = row.__getattr__(key)
child_reference_list = {}
# Regular children
else:
child_reference_list = []
# Iterate over each child_row
for child_index, child_row_data in row_data[key].iteritems():
current_row = None
if kv_type:
if (kv_key_type is not None and
kv_key_type.name == 'integer'):
child_index = int(child_index)
if child_index in current_child_rows:
current_row = current_child_rows[child_index]
child_index_values = []
else:
child_index_values = utils.escaped_split(child_index)
(child_row, is_child_new) = setup_row(child_index_values,
child_table,
child_row_data,
txn, reflist,
schema, idl,
validator_adapter,
errors,
current_row)
if child_row is None:
continue
op = REQUEST_TYPE_CREATE if is_child_new else \
REQUEST_TYPE_UPDATE
validator_adapter.add_resource_op(op, child_row,
child_table, row, table)
if kv_type:
child_reference_list.update({child_index: child_row})
else:
child_reference_list.append(child_row)
# Save this in global reflist
reflist[(child_table, child_index)] = (child_row,
is_child_new)
if child_table not in immutable_tables:
row.__setattr__(key, child_reference_list)
else:
# backward referenced children
parent_column = None
references = schema.ovs_tables[child_table].references
for col_name, col_value in references.iteritems():
if col_value.relation == 'parent':
parent_column = col_name
break
# Iterate over each child_row
for child_index, child_row_data in row_data[key].iteritems():
child_index_values = utils.escaped_split(child_index)
(child_row, is_child_new) = setup_row(child_index_values,
child_table,
child_row_data,
txn, reflist,
schema, idl,
validator_adapter,
errors)
if child_row is None:
continue
op = REQUEST_TYPE_CREATE if is_child_new else \
REQUEST_TYPE_UPDATE
validator_adapter.add_resource_op(op, child_row,
child_table, row, table)
# Set the references column in child row
if parent_column is not None and is_child_new:
child_row.__setattr__(parent_column, row)
# save this in global reflist
reflist[(child_table, child_index)] = (child_row,
is_child_new)
return (row, is_new)
