class TRACE():
TRACE_LOG = None
trace_l2_cond_list = []
trace_l3_cond_list = []
compute_id = ''
compute_list = {}
@classmethod
def set_trace_log(cls, trace_log):
cls.TRACE_LOG = trace_log
@classmethod
def send_trace(cls, ip, condition):
try:
# req trace
cls.TRACE_LOG.trace_log('START TRACE | ip = ' + ip +
', condition = ' + condition)
except:
LOG.exception_err_write()
@classmethod
def set_cnd_list(cls):
cls.compute_id = CONFIG.get_trace_cpt_id()
cpt_list = CONFIG.get_trace_cpt_list()
for cpt in cpt_list.split(','):
cpt = cpt.strip()
tmp = cpt.split(':')
if len(tmp) == 2:
cls.compute_list[tmp[0]] = tmp[1]
cls.trace_l2_cond_list = CONFIG.get_cnd_list('l2')
cls.trace_l3_cond_list = CONFIG.get_cnd_list('l3')
@staticmethod
def valid_IPv4(address):
try:
parts = address.split(".")
if len(parts) != 4:
return False
for item in parts:
if len(item) > 3:
return False
if not 0 <= int(item) <= 255:
return False
return True
except:
LOG.exception_err_write()
return False
ssh_options = '-o StrictHostKeyChecking=no ' \
'-o ConnectTimeout=' + str(CONFIG.get_ssh_timeout())
@classmethod
def ssh_exec(cls, username, node, command):
command = 'ovs-appctl ofproto/trace br-int \'' + command + '\''
cls.TRACE_LOG.trace_log('START TRACE | username = '******', ip = ' + node + ', condition = ' + command)
cmd = 'ssh %s %s@%s %s' % (cls.ssh_options, username, node, command)
cls.TRACE_LOG.trace_log('Command: ' + cmd)
try:
result = Popen(cmd, stdout=PIPE, stderr=PIPE, shell=True)
output, error = result.communicate()
if result.returncode != 0:
cls.TRACE_LOG.trace_log("SSH_Cmd Fail, cause => " + error)
return 'SSH FAIL\nCOMMAND = ' + command + '\nREASON = ' + error
else:
cls.TRACE_LOG.trace_log("ssh command execute successful\n" +
output)
return cls.parsing(output)
except:
LOG.exception_err_write()
@staticmethod
def parsing(output):
try:
result = ''
result_final = ''
result_flow = ''
last_action = ''
final_flag = False
lines = output.splitlines()
for line in lines:
line = line.strip()
if final_flag:
result_final = result_final + line + '\n'
if line.startswith('Datapath actions:') and "drop" in line:
result = 'result = [DROP]\n'
else:
result = 'result = [SUCCESS]\n'
continue
if (line.startswith('Bridge:') or line.startswith('Rule:')):
result_flow = result_flow + line + '\n'
elif (line.startswith('Flow:')
or line.startswith('OpenFlow actions=')):
result_flow = result_flow + line + '\n\n'
if line.startswith('OpenFlow actions='):
if 'output' in line:
last_action = 'Last OpenFlow action = [' + line[
line.find('output'):] + ']\n\n'
else:
last_action = 'Last ' + line + '\n\n'
elif line.startswith('Final flow:'):
result_final = result_final + line + '\n'
final_flag = True
return result + last_action + result_final + '\n' + result_flow
except:
LOG.exception_err_write()
return 'parsing error\n' + output
