def br_dump(bridge):
"""
Dump the port information of a given bridges.
"""
flows = br_getflows(bridge)
debug('br_dump: len flows=%u\n' % len(flows))
if flows:
Flow.banner_output()
for f in flows:
f.fmt_output()
def br_dump(bridge_name):
"""
Dump the port information of a given bridges.
"""
flows = ovs_lib.OVSBridge(bridge_name).dump_flows()
debug('br_dump: len flows=%u\n' % len(flows))
if flows:
Flow.banner_output()
for f in flows:
f.fmt_output()
def dump_flows(self):
"""
Dump out the flows of this bridge
:return:
"""
self.load_flows()
debug('br_dump: len flows=%u\n' % len(self.flows))
table = 0
if self.flows:
Flow.banner_output()
for f in self.flows:
if f.table != table:
output('\n')
table = f.table
f.fmt_output()
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 = 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 del_flow(self, flow_ids):
"""
Return True or False to del a flow from given list.
"""
if len(flow_ids) <= 0:
return False
if not self.flows:
self.load_flows()
del_flows = []
fd = sys.stdin.fileno()
old = termios.tcgetattr(fd)
for flow_id in flow_ids:
if isinstance(flow_id, str) and flow_id.isdigit():
flow_id = int(flow_id)
else:
continue
if flow_id >= len(self.flows):
continue
else:
del_flow = self.flows[flow_id]
Flow.banner_output()
del_flow.fmt_output()
output('Del the flow? [Y/n]: ')
new = termios.tcgetattr(fd)
new[3] = new[3] & ~termios.ICANON
try:
termios.tcsetattr(fd, termios.TCSADRAIN, new)
while True:
in_ch = sys.stdin.read(1)
if in_ch == 'n' or in_ch == 'N':
output('\tCancel the deletion.\n')
break
elif in_ch == 'y' or in_ch == 'Y' or in_ch != '\n':
del_flows.append(del_flow)
output('\n')
break
else:
output('\nWrong, please input [Y/n]: ')
continue
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old)
if not del_flows:
return False
self.load_flows(True)
flows_db_new = self.flows_db + '.new'
f, f_new = open(self.flows_db, 'r'), open(flows_db_new, 'w')
while True:
lines = f.readlines(1000)
if not lines:
break
for line in lines:
flow = self.parse_flow(line)
if flow not in del_flows:
f_new.write('%s' % line)
else:
debug("Del the flow:\n")
#del_flow.fmt_output()
f.close()
f_new.close()
replace_cmd = "ovs-ofctl replace-flows %s %s" % (self.bridge, flows_db_new)
error = Popen(replace_cmd, stdout=PIPE, stderr=PIPE, shell=True).communicate()[1]
if error:
output(error)
return False
else:
self.load_flows()
return True
def del_flow(self, flow_ids):
"""
Return True or False to del a flow from given list.
"""
if len(flow_ids) <= 0:
return False
if not self.flows:
self.load_flows()
del_flows = []
fd = sys.stdin.fileno()
old = termios.tcgetattr(fd)
for flow_id in flow_ids:
if isinstance(flow_id, str) and flow_id.isdigit():
flow_id = int(flow_id)
else:
continue
if flow_id >= len(self.flows):
continue
else:
del_flow = self.flows[flow_id]
Flow.banner_output()
del_flow.fmt_output()
output('Del the flow? [Y/n]: ')
new = termios.tcgetattr(fd)
new[3] = new[3] & ~termios.ICANON
try:
termios.tcsetattr(fd, termios.TCSADRAIN, new)
while True:
in_ch = sys.stdin.read(1)
if in_ch == 'n' or in_ch == 'N':
output('\tCancel the deletion.\n')
break
elif in_ch == 'y' or in_ch == 'Y' or in_ch != '\n':
del_flows.append(del_flow)
output('\n')
break
else:
output('\nWrong, please input [Y/n]: ')
continue
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old)
if not del_flows:
return False
self.load_flows(True)
flows_db_new = self.flows_db + '.new'
f, f_new = open(self.flows_db, 'r'), open(flows_db_new, 'w')
while True:
lines = f.readlines(1000)
if not lines:
break
for line in lines:
flow = self.parse_flow(line)
if flow not in del_flows:
f_new.write('%s' % line)
else:
debug("Del the flow:\n")
#del_flow.fmt_output()
f.close()
f_new.close()
replace_cmd = "ovs-ofctl replace-flows %s %s" % (self.bridge,
flows_db_new)
error = Popen(replace_cmd, stdout=PIPE, stderr=PIPE,
shell=True).communicate()[1]
if error:
output(error)
return False
else:
self.load_flows()
return True
def del_flow(self, flow_ids, forced=False):
"""
Return True or False to del a flow from given list.
"""
if len(flow_ids) <= 0:
return False
if not self.flows:
self.load_flows()
del_flows = []
fd = sys.stdin.fileno()
old = termios.tcgetattr(fd)
for flow_id in flow_ids:
if isinstance(flow_id, str) and flow_id.isdigit():
flow_id = int(flow_id)
else:
continue
if flow_id >= len(self.flows):
continue
else:
del_flow = self.flows[flow_id]
if forced:
del_flows.append(del_flow)
else:
Flow.banner_output()
del_flow.fmt_output()
output('Del the flow? [Y/n]: ')
new = termios.tcgetattr(fd)
new[3] = new[3] & ~termios.ICANON
try:
termios.tcsetattr(fd, termios.TCSADRAIN, new)
while True:
in_ch = sys.stdin.read(1)
if in_ch == 'n' or in_ch == 'N':
output('\tCancel the deletion.\n')
break
elif in_ch == 'y' or in_ch == 'Y' or in_ch != '\n':
del_flows.append(del_flow)
output('\n')
break
else:
output('\nWrong, please input [Y/n]: ')
continue
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old)
if not del_flows:
return False
self.load_flows(True)
f = open(self.flows_db, 'r')
while True:
lines = f.readlines(1000)
if not lines:
break
for line in lines:
flow = self._parse_flow(line)
if flow in del_flows:
del_matches = line.replace(',', ' ').split()
del_matches = \
filter(lambda m: not (m.startswith("cookie=")
or m.startswith("actions=")), del_matches)
del_cmd = "ovs-ofctl --strict del-flows %s %s" \
% (self.bridge, ','.join(del_matches))
err = Popen(del_cmd, stdout=PIPE, stderr=PIPE,
shell=True).communicate()[1]
if err:
error("Error when delflow <%s> in bridge %s\n"
% (','.join(del_matches), self.bridge))
error(err)
return False
f.close()
self.load_flows()
return True
def del_flow(self, flow_ids, forced=False):
"""
Return True or False to del a flow from given list.
"""
if len(flow_ids) <= 0:
return False
if not self.flows:
self.load_flows()
del_flows = []
fd = sys.stdin.fileno()
old = termios.tcgetattr(fd)
for flow_id in flow_ids:
if isinstance(flow_id, str) and flow_id.isdigit():
flow_id = int(flow_id)
else:
continue
if flow_id >= len(self.flows):
continue
else:
del_flow = self.flows[flow_id]
if forced:
del_flows.append(del_flow)
else:
Flow.banner_output()
del_flow.fmt_output()
output('Del the flow? [Y/n]: ')
new = termios.tcgetattr(fd)
new[3] = new[3] & ~termios.ICANON
try:
termios.tcsetattr(fd, termios.TCSADRAIN, new)
while True:
in_ch = sys.stdin.read(1)
if in_ch == 'n' or in_ch == 'N':
output('\tCancel the deletion.\n')
break
elif in_ch == 'y' or in_ch == 'Y' or in_ch != '\n':
del_flows.append(del_flow)
output('\n')
break
else:
output('\nWrong, please input [Y/n]: ')
continue
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old)
if not del_flows:
return False
self.load_flows(True)
f = open(self.flows_db, 'r')
while True:
lines = f.readlines(1000)
if not lines:
break
for line in lines:
flow = self._parse_flow(line)
if flow in del_flows:
del_matches = line.replace(',', ' ').split()
del_matches = \
filter(lambda m: not (m.startswith("cookie=")
or m.startswith("actions=")), del_matches)
del_cmd = "ovs-ofctl --strict del-flows %s %s" \
% (self.bridge, ','.join(del_matches))
err = Popen(del_cmd, stdout=PIPE, stderr=PIPE,
shell=True).communicate()[1]
if err:
error("Error when delflow <%s> in bridge %s\n"
% (','.join(del_matches), self.bridge))
error(err)
return False
f.close()
self.load_flows()
return True
