案例一：利于Python调用JSON对象来实现对XENA流量测试仪的灵活发包测试，能够适应Pair，Rotate，1-to-Many等多种拓扑模型

硬件：xena valkyrie 或 vantage主机，测试板卡不限，本方法适用于其100m~400g所有速率端口

环境配置：python 3

实现功能：

1.控制流量仪进行流量测试，预定配置的流量发送，报文统计，丢包率，延迟等信息的统计

2.单个python脚本配合不同的json对象文件，来实现不同端口数量，不同拓扑模型下的流量测试

3.在发包测试前及运行过程中都对发包端口的链路状态进行监控100m/1g/2.5g/5g/10g

4.嵌入arp探测，获取dut的mac信息，并记录在测试日志中

5.统计端口流量的tx,rx信息，丢包率，延迟信息

设计思路：main文件控制主流程，嵌入statistics模块进行数据统计，createclass模块进行命令预定义

运行效果：

 

 

 

 

主要实现代码：

  1 import threading, time, json, random, queue, types, sys, socket
  2 from binascii import hexlify
  3 from testutilsl23 import xenascripttools
  4 from createclass import streamcreate
  5 from statistics import collecttestresult
  6 
  7 def builddict(ports, configvalue, watching, watching_2):
  8     #generate ports dictionary
  9     a = 1 
 10     for port in ports:
 11         ip_address_b = configvalue['ip'][0:10]
 12         ip_address_c = ip_address_b + str(a)
 13         mac_a = configvalue['mac'][0:10]
 14         if a > 9:
 15             mac_address = mac_a + str(a)
 16         else:
 17             mac_address = mac_a + '0' + str(a)
 18         ip_address_a = hexlify(socket.inet_aton(ip_address_c)).decode()
 19         mac_ip = [str(mac_address), str(ip_address_a)]
 20         watching[port] = mac_ip
 21         a += 1
 22 
 23     watching_2['type_eth'] = 'ffff',
 24     watching_2['type_vlan'] = '8100',
 25     watching_2['type_ip'] = '08004500006a000000007f11ba2d',
 26     watching_2['type_udp'] = '00000000',
 27     watching_2['type_tcp'] = '000000000000000050000000e5a40000',
 28     watching_2['tcpid'] = [hex(int(configvalue['tcpport'][0]))[2:].zfill(4) + hex(int(configvalue['tcpport'][1]))[2:].zfill(4)]
 29 
 30 
 31 def printmes(ports, configvalue, ip_address):
 32     localtime = time.asctime( time.localtime(time.time()) )
 33     print("\n##############################################")
 34     print("                   测试配置                   ")
 35     print("##############################################\n")
 36     print("测试时间     :  " + str(localtime))
 37     print("设备ip地址   :  " + ip_address)
 38     print("测试端口     :  " + str(ports))
 39     print("测试模式     :  " + configvalue['stype'])
 40     print("持续时间     :  " + configvalue['testtime'])
 41     print("报文类型     :  " + configvalue['header_type'])
 42     print("报文长度     :  " + configvalue['packet'])
 43     if configvalue['stype'] == 'aggregation':
 44         print("上行vlan     :  " + str(configvalue['uvlan']))
 45         print("下行vlan     :  " + str(configvalue['uvlan']))
 46         print("wan速率      :  " + str(configvalue['wanrate']))
 47         print("lan速率      :  " + str(configvalue['lanrate']))
 48     else:
 49         print("vlan         :  " + str(configvalue['uvlan']))
 50         print("速率设置     :  " + str(configvalue['wanrate']))
 51     print("端口速率     :  " + str(configvalue['portrate']))
 52     print("学习时间     :  " + configvalue['learntime'])
 53     print("丢包率设置   :  " + configvalue['threshold'])
 54     if configvalue['snlearnenable'] == '1':
 55         print("自动学习sn   :  enable")
 56     else:
 57         print("自动学习sn   :  disable")
 58     if configvalue['portspeedcheck'] == '1':
 59         print("端口速率检测 :  enable" )
 60     else:
 61         print("端口速率检测 :  disable" )
 62 
 63 
 64 def maclearning(xm, ports, configvalue):
 65     if configvalue['snlearnenable'] == '1':
 66         xm.sendexpectok(ports [1] + " ps_create [0]")
 67         xm.sendexpectok(ports [1] + " ps_tpldid [0] 0")
 68         xm.sendexpectok(ports [1] + " ps_packetlength [0] fixed 70 1518")
 69         xm.sendexpectok(ports [1] + " ps_headerprotocol [0] ethernet arp")
 70         learnip_hex = hexlify(socket.inet_aton(configvalue['learnip'])).decode()
 71         xm.sendexpectok(ports [1] + " ps_packetheader [0] 0xffffffffffff00000000000108060001080006040001000000000001c0a80164ffffffffffff" + learnip_hex)
 72         xm.sendexpectok(ports [1] + " ps_ratepps [0] 2")
 73         xm.sendexpectok(ports [1] + " ps_enable [0] on")
 74         xm.sendexpectok(ports [1] + " p_traffic on")
 75         xm.sendexpectok(ports [1] + " p_capture on")
 76         time.sleep(1)
 77         xm.sendexpectok(ports [1] + " p_capture off")
 78         xm.sendexpectok(ports [1] + " p_traffic off")
 79         sn = xm.send(ports[1] + " pc_packet [0] ?")
 80         sn = sn.split('  ')[-1]
 81         xm.sendexpectok(ports [1] + " ps_delete [0]")
 82         serial = str(sn)
 83         if sn == '<badindex>':
 84             print ("\ntest result :failed;[arp learning failed!!]")
 85             sys.exit()
 86         print ("dut sn       :  " + str(serial[16:28]))
 87 
 88 
 89 def portspeed(xm, ports, psc, configvalue):
 90     if configvalue['prcheck'] == '1':
 91         xm.portsynccheck(ports)
 92     i = 0
 93     for port in ports:
 94         ps = xm.send(port + ' p_speed ?')
 95         ps = ps.split('  ')[-1]
 96         psc.append(str(ps))
 97         if configvalue['portspeedcheck'] == '1':
 98             if str(ps) != configvalue['portrate'][i]:
 99                 print ('test result:failed;[' + port + ' 端口速率不匹配，请检查配置...]')
100                 sys.exit()
101         i += 1
102 
103 
104 def runtest(xm, ports, configvalue):
105     xm.porttrafficstart(ports)
106     time.sleep(float(configvalue['learntime']))
107     xm.porttrafficstop(ports)
108     time.sleep(0.5)
109     xm.statisticsclear(ports)
110     time.sleep(0.5)
111     xm.porttimelimit(ports, configvalue['testtime'])
112     time.sleep(0.2)
113     xm.porttrafficstart(ports)
114     count = 0
115     print ("\n开始打流，请耐心等候, 测试时间约为" + configvalue['testtime'] + "秒......\n")
116     while true:
117         print (">>>>>>>>>", end='')
118         xm.send(ports[0] + " p_traffic ?")
119         sys.stdout.flush()
120         count += 1
121         time.sleep(1)
122         if count > int(configvalue['testtime']):
123             print ('\n\n测试结束，正在收集测试数据......')
124             break
125     print()
126     xm.porttrafficstop(ports)
127     time.sleep(1)
128 
129 
130 def main(argv):
131     a = sys.argv
132     configvalue = {}
133     filename = str(a[1])
134     with open(filename,'rb') as f:
135         configs=json.loads(f.read())
136 
137         ip_address = configs.get('ip_address')
138         ports = configs.get('ports', '')
139         configvalue['uvlan'] = configs.get('uvlan', '')
140         configvalue['dvlan'] = configs.get('dvlan', '')
141         configvalue['tcpport'] = configs.get('tcpudpport', '')
142         configvalue['packet'] = configs.get('packet', '')
143         configvalue['testtime'] = configs.get('testtime', '')
144         configvalue['threshold'] = configs.get('threshold', '')
145         configvalue['header_type'] = configs.get('headertype', '')
146         configvalue['learntime'] = configs.get('learntime', '')
147         configvalue['payload'] = configs.get('payload', '')
148         configvalue['wanrate'] = configs.get('wanrate', '')
149         configvalue['lanrate'] = configs.get('lanrate', '')
150         configvalue['portrate'] = configs.get('portrate', '')
151         configvalue['prcheck'] = configs.get('prcheck', '')
152         configvalue['ip'] = configs.get('ip', '')
153         configvalue['mac'] = configs.get('mac', '')
154         configvalue['snlearnenable'] = configs.get('snlernenable', '')
155         configvalue['learnip'] = configs.get('learnip', '')
156         configvalue['stype'] = configs.get('stype', '')
157         configvalue['portspeedcheck'] = configs.get('pscheck', '')
158 
159     psc = []
160     fcs = []
161     watching = {}
162     watching_2 = {}
163     testresult = {}
164 
165     printmes(ports, configvalue, ip_address)
166 
167     xm = xenascripttools(ip_address)
168     xm.logonsetowner("xena", "python_test_1")
169     xm.portrelinquish(ports)
170     xm.portreserve(ports)
171     xm.porttrafficstop(ports)
172     xm.streamsdelete(ports)
173     sc = streamcreate(xm, ports, watching, watching_2, configvalue)
174     cr = collecttestresult(xm, ports, psc, configvalue, testresult, fcs)
175 
176     
177     builddict(ports, configvalue, watching, watching_2)
178     portspeed(xm, ports, psc, configvalue)
179     if configvalue['snlearnenable'] == '1':
180         maclearning(xm, ports, configvalue)
181     if configvalue['stype'] == 'loopback':
182         sc.loopback(xm, ports, watching, watching_2, configvalue)
183         runtest(xm, ports, configvalue)
184         cr.loopbackstatistics(xm, ports, testresult)
185     if configvalue['stype'] == 'eachother':
186         sc.eachother(xm, ports, watching, watching_2, configvalue)
187         runtest(xm, ports, configvalue)
188         cr.eachotherstatistics(xm, ports, testresult)
189     if configvalue['stype'] == 'aggregation':
190         sc.aggregation(xm, ports, watching, watching_2, configvalue)
191         runtest(xm, ports, configvalue)
192         cr.aggregationstatistics(xm, ports, testresult)
193     cr.fcsgetvalue(xm, ports, fcs)
194     cr.outputstatistics(ports, psc, configvalue, testresult, fcs)
195     xm.portrelease(ports)
196 
197 if __name__ == '__main__':
198     sys.exit(main(sys.argv))

 

json对象配置文件

{
"##常用配置修改":"",

"ports": ["0/0","0/1","0/2","0/3","0/4","0/5"],
"packet": "fixed 64 1518",
"testtime": "10",

"##注意：dvlan和lanrate只有在aggregation模式生效，其他模式仅需uvlan和wanrate":"",
"##其中vlan设置为-1则表示不添加vlan":"",
"uvlan": "-1",
"dvlan": "-1",
"wanrate": ["100", "100", "100","100", "100", "100"],
"lanrate": ["21", "22", "23","24"],

"portrate": ["1000","1000","1000","1000","1000","1000"],

"##stype为测试模式，分别可以配置为：loopback, eachother, aggregation":"",
"##其中loopback为环回测试，eachother为两两互打测试，aggregation为汇聚测试":"",
"stype":"eachother",

"##headertype为报文类型，分别可以配置为：tcp, udp, ip, ethernet":"",
"headertype": "ethernet",

"##threshold为丢包率设置":"",
"threshold": "0",




"##不常用配置修改":"",

"##发送学习报文的时间":"",
"learntime": "3",

"##payload类型分别有: pattern, random":"",
"payload": "pattern",

"##prcheck为使能端口状态检测，1为开启，0为关闭；使能后端口为连接的时候会报错":"",
"prcheck": "1",

"##pscheck为检测端口速率是否匹配，1为开启，0为关闭":"",
"pscheck":"1",

"tcpudpport": ["1024", "2048"],
"ip": "192.168.163.1",
"mac": "000000033333",

"##学习dut的mac地址":"",
"snlernenable": "0",
"learnip": "192.168.2.1",

"##测试仪ip地址":"",
"ip_address": "192.168.1.200"
}