def get_back_references_json(parent_row, parent_table, table, schema, idl, uri, selector=None, depth=0):
references = schema.ovs_tables[table].references
_refCol = None
for key, value in references.iteritems():
if value.relation == OVSDB_SCHEMA_PARENT and value.ref_table == parent_table:
_refCol = key
break
if _refCol is None:
return None
resources_list = []
if not depth:
for row in idl.tables[table].rows.itervalues():
ref = row.__getattr__(_refCol)
if ref.uuid == parent_row:
tmp = utils.get_table_key(row, table, schema, idl)
_uri = _create_uri(uri, tmp)
resources_list.append(_uri)
else:
for row in idl.tables[table].rows.itervalues():
ref = row.__getattr__(_refCol)
if ref.uuid == parent_row:
json_row = get_row_json(row.uuid, _refCol, schema, idl, uri, selector, depth)
resources_list.append(json_row)
return resources_list
def get_column_json(column, row, table, schema, idl, uri,
selector=None, depth=0, depth_counter=0):
db_table = idl.tables[table]
db_row = db_table.rows[row]
db_col = db_row.__getattr__(column)
current_table = schema.ovs_tables[table]
# list of resources to return
resources_list = []
# Reference Column
col_table = current_table.references[column].ref_table
column_table = schema.ovs_tables[col_table]
# GET without depth
if not depth:
# Is a top level table
if column_table.parent is None:
uri = _get_base_uri() + column_table.plural_name
# Is a child table, is faster concatenate the uri instead searching
elif column_table.parent == current_table.name:
# If this is a child reference URI don't add the column path.
if column_table.plural_name not in uri:
uri = uri.rstrip('/')
uri += '/' + column_table.plural_name
for value in db_col:
ref_row = _get_referenced_row(schema, table, row,
column, value, idl)
# Reference with different parent, search the parent
if column_table.parent is not None and \
column_table.parent != current_table.name:
uri = _get_base_uri()
uri += utils.get_reference_parent_uri(col_table, ref_row,
schema, idl)
uri += column_table.plural_name
# Set URI for key
tmp = utils.get_table_key(ref_row, column_table.name, schema, idl)
_uri = _create_uri(uri, tmp)
resources_list.append(_uri)
# GET with depth
else:
for value in db_col:
ref_row = _get_referenced_row(schema, table, row,
column, value, idl)
json_row = get_row_json(ref_row.uuid, col_table, schema, idl, uri,
selector, depth, depth_counter)
resources_list.append(json_row)
return resources_list
def get_back_references_json(parent_row,
parent_table,
table,
schema,
idl,
uri,
selector=None,
depth=0,
fetch_readonly=False,
manager=None):
references = schema.ovs_tables[table].references
_refCol = None
for key, value in references.iteritems():
if (value.relation == OVSDB_SCHEMA_PARENT
and value.ref_table == parent_table):
_refCol = key
break
if _refCol is None:
raise gen.Return(None)
resources_list = []
if not depth:
for row in idl.tables[table].rows.itervalues():
ref = row.__getattr__(_refCol)
if ref.uuid == parent_row:
tmp = utils.get_table_key(row, table, schema, idl, False)
_uri = _create_uri(uri, tmp)
resources_list.append(_uri)
else:
# Fetch all read-only columns prior to retrieving row data
rows = []
for row in idl.tables[table].rows.itervalues():
ref = row.__getattr__(_refCol)
if ref.uuid == parent_row:
rows.append(row)
if fetch_readonly and manager:
yield utils.fetch_readonly_columns(schema, table, idl, manager,
rows)
for row in rows:
json_row = yield get_row_json(row.uuid,
table,
schema,
idl,
uri,
selector,
depth,
fetch_readonly=fetch_readonly,
manager=manager)
resources_list.append(json_row)
raise gen.Return(resources_list)
def get_table_json(table, schema, idl, uri, selector=None, depth=0):
db_table = idl.tables[table]
resources_list = []
if not depth:
for row in db_table.rows.itervalues():
tmp = utils.get_table_key(row, table, schema, idl)
_uri = _create_uri(uri, tmp)
resources_list.append(_uri)
else:
for row in db_table.rows.itervalues():
json_row = get_row_json(row.uuid, table, schema, idl, uri, selector, depth)
resources_list.append(json_row)
return resources_list
def subscription_changes_check_callback(self, manager, idl):
"""
Callback method invoked by manager of the IDL used for detecting
notification subscription changes.
"""
table_changes = \
notifutils.get_table_changes_from_idl(consts.SUBSCRIPTION_TABLE,
idl)
for sub_uuid, sub_changes in table_changes.iteritems():
seqno = manager.curr_seqno
if notifutils.is_resource_added(sub_changes, seqno):
subscription_row = \
idl.tables[consts.SUBSCRIPTION_TABLE].rows[sub_uuid]
subscription_name = \
utils.get_table_key(subscription_row,
consts.SUBSCRIPTION_TABLE,
self._schema, idl)
# Only one key, so grab the first index
subscription_name = subscription_name[0]
app_log.debug("Subscription added for: \"%s\"" %
subscription_name)
resource_uri = \
utils.get_column_data_from_row(subscription_row,
consts.SUBSCRIPTION_URI)
try:
subscription = \
yield self.create_subscription(subscription_name,
subscription_row,
resource_uri,
idl)
yield self.get_initial_values_and_notify(idl, subscription)
self.add_subscription(sub_uuid, subscription)
except Exception as e:
app_log.error("Error while creating subscription: %s" % e)
elif notifutils.is_resource_deleted(sub_changes, seqno):
app_log.debug("Subscription was deleted.")
self.remove_subscription(sub_uuid)
def get_table_json(table,
schema,
idl,
uri,
selector=None,
depth=0,
fetch_readonly=False,
manager=None):
db_table = idl.tables[table]
resources_list = []
if not depth:
for row in db_table.rows.itervalues():
tmp = utils.get_table_key(row, table, schema, idl)
_uri = _create_uri(uri, tmp)
resources_list.append(_uri)
else:
# Fetch all read-only columns prior to retrieving row data
if fetch_readonly and manager:
yield utils.fetch_readonly_columns_for_table(
schema, table, idl, manager)
for row in db_table.rows.itervalues():
json_row = yield get_row_json(row.uuid,
table,
schema,
idl,
uri,
selector,
depth,
fetch_readonly=fetch_readonly,
manager=manager)
resources_list.append(json_row)
raise gen.Return(resources_list)
