def find_data_dependencies(self, data_xpath):
ref_list = []
node = self.root
try:
data_node = self._find_data_node(data_xpath)
except Exception as e:
print("find_data_dependencies(): Failed to find data node from xpath: {}".format(data_xapth))
return ref_list
try:
value = str(self._find_data_node_value(data_xpath))
schema_node = ly.Schema_Node_Leaf(data_node.schema())
backlinks = schema_node.backlinks()
if backlinks.number() > 0:
for link in backlinks.schema():
node_set = node.find_path(link.path())
for data_set in node_set.data():
data_set.schema()
casted = data_set.subtype()
if value == casted.value_str():
ref_list.append(data_set.path())
except Exception as e:
print('Failed to find node or dependencies for {}'.format(data_xpath))
raise SonicYangException("Failed to find node or dependencies for \
{}\n{}".format(data_xpath, str(e)))
return ref_list
def deleteNode(self, xpath):
# These MACROS used only here, can we get it from Libyang Header ?
try:
LYS_LEAF = 4
node = self._find_data_node(xpath)
if node is None:
raise ('Node {} not found'.format(xpath))
snode = node.schema()
# check for a leaf if it is a key. If yes delete the parent
if (snode.nodetype() == LYS_LEAF):
leaf = ly.Schema_Node_Leaf(snode)
if leaf.is_key():
# try to delete parent
nodeP = self._find_parent_data_node(xpath)
xpathP = nodeP.path()
if self._deleteNode(xpath=xpathP, node=nodeP) == False:
raise Exception('_deleteNode failed')
else:
return True
# delete non key element
if self._deleteNode(xpath=xpath, node=node) == False:
raise Exception('_deleteNode failed')
except Exception as e:
raise SonicYangException("Failed to delete node {}\n{}".\
format( xpath, str(e)))
return True
def _find_schema_dependencies(self, schema_xpath):
ref_list = []
try:
schema_node = self._find_schema_node(schema_xpath)
except Exception as e:
print("Cound not find the schema node from xpath: " + str(schema_xpath))
self.fail(e)
return ref_list
schema_node = ly.Schema_Node_Leaf(schema_node)
backlinks = schema_node.backlinks()
if backlinks.number() > 0:
for link in backlinks.schema():
print("backlink schema: {}".format(link.path()))
ref_list.append(link.path())
return ref_list
def _find_schema_dependencies(self, schema_xpath):
ref_list = []
try:
schema_node = self._find_schema_node(schema_xpath)
except Exception as e:
self.sysLog(msg="Cound not find the schema node from xpath: " +
str(schema_xpath),
debug=syslog.LOG_ERR,
doPrint=True)
self.fail(e)
return ref_list
schema_node = ly.Schema_Node_Leaf(schema_node)
backlinks = schema_node.backlinks()
if backlinks.number() > 0:
for link in backlinks.schema():
self.sysLog(msg="backlink schema: {}".format(link.path()),
doPrint=True)
ref_list.append(link.path())
return ref_list
