def run():
if len(sys.argv) < 3:
return
cmd = " ".join(sys.argv[2:])
if "monit.sock" in sys.argv[1]:
uuid = sys.argv[1].split("/")[-2]
ot = monitor_exec_base(uuid, cmd, 30)
fwprint( ot[0])
fwprint( ot[1])
else:
send_cmd_get_result(sys.argv[1], cmd)
def send_cmd_get_result(serial_file, cmd):
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
s.connect(serial_file)
s.settimeout(None)
# connect结束，不能立即recv，否则大多数情况都是timeout失败
time.sleep(1)
s.send(cmd)
strs = ""
try:
while True:
tmp1 = s.recv(1024)
strs = strs + tmp1
fwprint( "Recv:",strs)
finally:
s.close()
fwprint( "LOG:Socket is close!")
def monitor_exec_base(uuid, cmd, timeout):
# 修改monit获取结果超时最少为60秒。changeimg超时用30秒不够
if timeout < 60:
timeout = 60
cmd = str(cmd)
if "\r\n" not in cmd:
cmd = cmd + "\r\n"
try:
serial_file = "/var/run/%s/monit.sock" % uuid
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
s.settimeout(2) # 设置recv超时为2秒
s.connect(serial_file)
# connect结束，不能立即recv，否则大多数情况都是timeout失败
time.sleep(0.1)
except:
syslog.syslog(syslog.LOG_ERR, "VM exe cmd:"+ uuid + ":" + cmd.strip() + ":False:ConnectFailed:" + traceback.format_exc())
fwprint( "MONIT0:connectError:",uuid,":",str(cmd.strip()),":",traceback.format_exc())
return (False, "Connect vnc failed")
strs = ""
num = 0
try:
try:
recv_length = 2048
# 读取清理掉缓存，确保monit正确返回到提示符，再执行命令，保证命令执行成功。
# 用脚本反复的连接，打印recv结果表明，每次新开启的连接，都会有前缀缓存存在，次数先recv清理缓存的做法是正确的。
# 此处理依赖虚拟化版本兼容支持，如果虚拟化版本变更成每次连接前无缓存，则此处理将会造成所有monit的命令2秒超时失败。
try:
tmpstrs1 = s.recv(recv_length)
syslog.syslog(syslog.LOG_ERR, "VM exe cmd:"+ uuid + ":" + cmd.strip() + ":recv before send cmd:" + tmpstrs1)
except:
fwprint( "MONIT0:",uuid,":",str(cmd.strip()),":",traceback.format_exc())
pass
# 写入命令。
s.send(cmd)
while num < timeout * 5:
# 由于recv收到大量无意义的字符串，很快达到2048大小，造成recv很快返回，最终造成timeout失去意义，尝试30次，并不等于30秒，远远小于30秒
# 故这里加上sleep处理，使得超时真正意义的达到
time.sleep(0.1)
num += 1
try:
result = s.recv(recv_length)
except:
fwprint( "MONIT1:",uuid,":",str(cmd.strip()),":",traceback.format_exc())
continue
strs = strs + result
if ("VM status:" in strs):
if ("paused" in strs) or ("running" in strs):
break
if ("finish" in strs):
break
if ("success" in strs) or ("Success" in strs):
break
if ("fail" in strs) or ("Fail" in strs):
break
if ("Error" in strs) or ("error" in strs):
break
if ("100%" in strs) or ("complete" in strs):
break
except:
# 可能vServer非常卡，在某次读取结果时超时，此时不能立即返回失败，可依据曾经读取的残缺的结果判断是否成功，有可能命令本身是成功的。
syslog.syslog(syslog.LOG_ERR, "VM exe cmd:Error:"+ str(uuid)+str(cmd.strip())+":result:" + str(strs)[-1000:])
syslog.syslog(syslog.LOG_ERR, "VM exe cmd:Error:"+ str(uuid)+str(cmd.strip())+":"+traceback.format_exc())
fwprint( "MONIT2:",uuid,":",str(cmd.strip()),":",traceback.format_exc())
finally:
s.close()
fwprint( "MONIT3:",uuid,":",str(cmd.strip()),":Socket Close:")
if ("fail" in strs) or ("Fail" in strs) or ("Error" in strs) or ("error" in strs):
flag = False
else:
flag = True
if num >= timeout:
if not strs:
flag = False
strs = "Vm monit time out:" + str(timeout)
# monit超时失败，且无任何日志输出。
elif ("success" in strs) or ("Success" in strs):
pass
elif ("100%" in strs) or ("complete" in strs):
pass
# 暂时屏蔽“任务执行超时，没有完成”的这种情况，
# 避免kvm的monit部分命令代码没有修改，没添加返回success等字样，出现错误的判断
# 当任务真正出现超时失败时，无法识别出来
else:
fwprint( "MONIT4:",uuid,":",str(cmd.strip()),":Get Result TIMEOUT:", timeout)
# flag = False
# # monit超时失败，无成功结果输出。
syslog.syslog(syslog.LOG_ERR, "VM exe cmd:"+ str(uuid) + ":" + str(cmd.strip()) + ":" + str(flag) +":"+ str(strs)[-1000:])
fwprint( "MONIT5:",uuid,":",str(cmd.strip()),":",strs)
return (flag, str(strs))
try:
while True:
tmp1 = s.recv(1024)
strs = strs + tmp1
fwprint( "Recv:",strs)
finally:
s.close()
fwprint( "LOG:Socket is close!")
def run():
if len(sys.argv) < 3:
return
cmd = " ".join(sys.argv[2:])
if "monit.sock" in sys.argv[1]:
uuid = sys.argv[1].split("/")[-2]
ot = monitor_exec_base(uuid, cmd, 30)
fwprint( ot[0])
fwprint( ot[1])
else:
send_cmd_get_result(sys.argv[1], cmd)
if __name__ == "__main__":
fwprint( "Help:python /usr/vmd/connect_serial0.pyc /var/run/vmUuid/sockfilename cmd1 para1 para2")
fwprint( "Help:Test in VMD Running: sockfilename = serial1.sock(For None) or monit.sock(For monit) or serial2.sock(For vmFireWall, kill vmd for Test)")
fwprint( "Help:Test in VMD be killed: sockfilename = serial2.sock(For vmFireWall) or serial3/4.sock(For Anti-virus SoftWare)")
run()
sys.exit(0)
