1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
import argparse
from collections import namedtuple
import sys
import re
import os
ArgumentPack = namedtuple('ArgumentPack', ['name_or_flags', 'options'])
ArgumentGroup = namedtuple('ArgumentGroup', ['type', 'args', 'options'])
# list of available parsing options
MULTIPLIER = 1
PORT_LIST = 2
ALL_PORTS = 3
PORT_LIST_WITH_ALL = 4
FILE_PATH = 5
FILE_FROM_DB = 6
SERVER_IP = 7
STREAM_FROM_PATH_OR_FILE = 8
DURATION = 9
FORCE = 10
# list of ArgumentGroup types
MUTEX = 1
def match_time_unit(val):
'''match some val against time shortcut inputs '''
match = re.match("^(\d+)([m|h]?)$", val)
if match:
digit = int(match.group(1))
unit = match.group(2)
if not unit:
return digit
elif unit == 'm':
return digit*60
else:
return digit*60*60
else:
raise argparse.ArgumentTypeError("Duration should be passed in the following format: \n"
"-d 100 : in sec \n"
"-d 10m : in min \n"
"-d 1h : in hours")
def match_multiplier(val):
'''match some val against multiplier shortcut inputs '''
match = re.match("^(\d+)(gb|kpps|%?)$", val)
if match:
digit = int(match.group(1))
unit = match.group(2)
if not unit:
return digit
elif unit == 'gb':
raise NotImplementedError("gb units are not supported yet")
else:
raise NotImplementedError("kpps units are not supported yet")
else:
raise argparse.ArgumentTypeError("Multiplier should be passed in the following format: \n"
"-m 100 : multiply stream file by this factor \n"
"-m 10gb : from graph calculate the maximum rate as this bandwidth (for each port)\n"
"-m 10kpps : from graph calculate the maximum rate as this pps (for each port)\n"
"-m 40% : from graph calculate the maximum rate as this percent from total port (for each port)")
def is_valid_file(filename):
if not os.path.isfile(filename):
raise argparse.ArgumentTypeError("The file '%s' does not exist" % filename)
return filename
OPTIONS_DB = {MULTIPLIER: ArgumentPack(['-m', '--multiplier'],
{'help': "Set multiplier for stream",
'dest': "mult",
'default': 1.0,
'type': match_multiplier}),
PORT_LIST: ArgumentPack(['--port'],
{"nargs": '+',
'dest':'ports',
'metavar': 'PORTS',
'type': int,
'help': "A list of ports on which to apply the command",
'default': []}),
ALL_PORTS: ArgumentPack(['-a'],
{"action": "store_true",
"dest": "all_ports",
'help': "Set this flag to apply the command on all available ports"}),
DURATION: ArgumentPack(['-d'],
{"action": "store",
'metavar': 'TIME',
"type": match_time_unit,
'help': "Set duration time for TRex."}),
FORCE: ArgumentPack(['--force'],
{"action": "store_true",
'default': False,
'help': "Set if you want to stop active ports before applying new TRex run on them."}),
FILE_PATH: ArgumentPack(['-f'],
{'metavar': 'FILE',
'dest': 'file',
'nargs': 1,
'type': is_valid_file,
'help': "File path to YAML file that describes a stream pack. "}),
FILE_FROM_DB: ArgumentPack(['--db'],
{'metavar': 'LOADED_STREAM_PACK',
'help': "A stream pack which already loaded into console cache."}),
SERVER_IP: ArgumentPack(['--server'],
{'metavar': 'SERVER',
'help': "server IP"}),
# advanced options
PORT_LIST_WITH_ALL: ArgumentGroup(MUTEX, [PORT_LIST,
ALL_PORTS],
{'required': True}),
STREAM_FROM_PATH_OR_FILE: ArgumentGroup(MUTEX, [FILE_PATH,
FILE_FROM_DB],
{'required': True})
}
class CCmdArgParser(argparse.ArgumentParser):
def __init__(self, stateless_client, *args, **kwargs):
super(CCmdArgParser, self).__init__(*args, **kwargs)
self.stateless_client = stateless_client
def parse_args(self, args=None, namespace=None):
try:
opts = super(CCmdArgParser, self).parse_args(args, namespace)
if opts is None:
return None
if opts.all_ports:
opts.ports = self.stateless_client.get_port_ids()
for port in opts.ports:
if not self.stateless_client._is_ports_valid(port):
self.error("port id {0} is not a valid\n".format(port))
return opts
except SystemExit:
# recover from system exit scenarios, such as "help", or bad arguments.
return None
def get_flags (opt):
return OPTIONS_DB[opt].name_or_flags
def gen_parser(stateless_client, op_name, description, *args):
parser = CCmdArgParser(stateless_client, prog=op_name, conflict_handler='resolve',
description=description)
for param in args:
try:
if isinstance(param, int):
argument = OPTIONS_DB[param]
else:
argument = param
if isinstance(argument, ArgumentGroup):
if argument.type == MUTEX:
# handle as mutually exclusive group
group = parser.add_mutually_exclusive_group(**argument.options)
for sub_argument in argument.args:
group.add_argument(*OPTIONS_DB[sub_argument].name_or_flags,
**OPTIONS_DB[sub_argument].options)
else:
# ignore invalid objects
continue
elif isinstance(argument, ArgumentPack):
parser.add_argument(*argument.name_or_flags,
**argument.options)
else:
# ignore invalid objects
continue
except KeyError as e:
cause = e.args[0]
raise KeyError("The attribute '{0}' is missing as a field of the {1} option.\n".format(cause, param))
return parser
if __name__ == "__main__":
pass
|
