def parse_flow(self, line):
"""
Return a Flow or None, converted from a given line of original flow.
"""
line = line.strip()
table, packet, priority, match, actions = 0, 0, 0, '', ''
if line.startswith('cookie='):
table = get_num_after(line, 'table=')
packet = get_num_after(line, 'n_packets=')
if table is None or packet is None:
return None
for field in line.split():
if field.startswith('priority='): #priority of priority+match
priority = get_num_after(field, 'priority=')
if priority is None:
return None
match = field.replace('priority=%u' % priority, '').lstrip(',').strip()
if not match:
match = r'*'
elif field.startswith('actions='):
actions = field.replace('actions=', '').rstrip('\n')
if priority is None: # There is no priority= field
match = line.split()[len(line.split()) - 2]
if len(match)>=30:
match.replace('vlan_tci','vlan')
match = re.compile('0x0{1,}').sub('0x',match)
return Flow(self.bridge, table, packet, priority, match, actions)
else:
return None
def parse_flow(self, line):
"""
Return a Flow or None, converted from a given line of original flow.
"""
line = line.strip()
table, packet, priority, match, actions = 0, 0, 0, '', ''
if line.startswith('cookie='):
table = get_num_after(line, 'table=')
packet = get_num_after(line, 'n_packets=')
if table is None or packet is None:
return None
for field in line.split():
if field.startswith('priority='): #priority of priority+match
priority = get_num_after(field, 'priority=')
if priority is None:
return None
match = field.replace('priority=%u' % priority,
'').lstrip(',').strip()
if not match:
match = r'*'
elif field.startswith('actions='):
actions = field.replace('actions=', '').rstrip('\n')
if priority is None: # There is no priority= field
match = line.split()[len(line.split()) - 2]
if len(match) >= 30:
match.replace('vlan_tci', 'vlan')
match = re.compile('0x0{1,}').sub('0x', match)
return Flow(self.bridge, table, packet, priority, match, actions)
else:
return None
def _parse_flow(self, line):
"""
Return a Flow or None, converted from a given line of original flow.
"""
line = line.strip()
table, packet, priority, match, actions = 0, 0, 0, '', ''
if line.startswith('cookie='):
table = get_num_after(line, 'table=')
packet = get_num_after(line, 'n_packets=')
if table is None or packet is None:
return None
for field in line.split():
if field.startswith('priority='): # match starts with pri
priority = get_num_after(field, 'priority=')
if priority is None:
error('No priority field found in flow\n')
return None
match = \
field.replace('priority=%u'
% priority, '').lstrip(',').strip()
if not match:
match = r'*'
port_no = get_num_after(field, 'in_port=')
if isinstance(port_no, int):
intf = self._get_port_intf(port_no)
if intf:
match = \
match.replace('in_port=%u'
% port_no, 'in_port=%s' % intf)
elif field.startswith('actions='):
actions = field.replace('actions=', '').rstrip('\n')
if priority is None: # There is no priority= field
match = line.split()[len(line.split()) - 2]
if len(match) >= 30:
match.replace('vlan_tci', 'vlan')
match = re.compile('0x0{1,}').sub('0x', match)
return Flow(self.bridge, table, packet, priority, match, actions)
else:
return None
def _parse_flow(self, line):
"""
Return a Flow or None, converted from a given line of original flow.
"""
line = line.strip()
table, packet, priority, match, actions = 0, 0, 0, '', ''
if line.startswith('cookie='):
table = get_num_after(line, 'table=')
packet = get_num_after(line, 'n_packets=')
if table is None or packet is None:
return None
for field in line.split():
if field.startswith('priority='): # match starts with pri
priority = get_num_after(field, 'priority=')
if priority is None:
error('No priority field found in flow\n')
return None
match = \
field.replace('priority=%u'
% priority, '').lstrip(',').strip()
if not match:
match = r'*'
port_no = get_num_after(field, 'in_port=')
if isinstance(port_no, int):
intf = self._get_port_intf(port_no)
if intf:
match = \
match.replace('in_port=%u'
% port_no, 'in_port=%s' % intf)
elif field.startswith('actions='):
actions = self._process_actions(field)
if priority is None: # There is no priority= field
match = line.split()[len(line.split()) - 2]
if len(match) >= 30:
match.replace('vlan_tci', 'vlan')
match = re.compile('0x0{1,}').sub('0x', match)
return Flow(self.bridge, table, packet, priority, match, actions)
else:
return None
def _process_actions(self, actions_str):
"""
Process the actions fields to make it more readable
:param actions_str: input action string
:return: The converted string.
"""
actions = actions_str.replace('actions=', '').rstrip('\n')
for act in actions_str.split(','):
if act.startswith('output:'):
port_no = get_num_after(act, 'output:')
if isinstance(port_no, int):
intf = self._get_port_intf(port_no)
if intf:
actions = \
actions.replace('output:%u'
% port_no, 'output:%s' % intf)
return actions
