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#!/usr/bin/env/python
import argparse
import re
def make_experiment(filename, bzImage, initramfs):
"""
:type filename str
:param filename: path to the .conf file
:param bzImage: path to the bzImage file
:param initramfs: path to the rootfs.cpio file
:return:
"""
shims = {}
nodes = {}
difs = {}
ex_name = filename.split('/')[-1].split('.')[0]
print('Reading file %s, under project name %s.' % (filename, ex_name))
with open(filename, 'r') as conf:
line_cnt = 0
while 1:
line = conf.readline()
if line == '':
break
line_cnt += 1
line = line.replace('\n', '').strip()
if line.startswith('#') or line == "":
continue
m = re.match(r'\s*eth\s+([\w-]+)\s+(\d+)([GMK])bps\s+(\w.*)$', line)
if m:
shim = m.group(1)
speed = int(m.group(2))
speed_unit = m.group(3).lower()
vm_list = m.group(4).split()
if shim in shims or shim in difs:
print('Error: Line %d: shim %s already defined'
% (line_cnt, shim))
continue
if speed_unit == 'K':
speed = speed // 1000
if speed_unit == 'G':
speed = speed * 1000
shims['shim' + shim] = {'name': 'shim' + shim,
'speed': speed,
'type': 'eth'}
for vm in vm_list:
nodes.setdefault(vm, {'name': vm, 'difs': [],
'dif_registrations': {},
'registrations': {}})
nodes[vm]['difs'].append(shim)
continue
m = re.match(r'\s*dif\s+([\w-]+)\s+([\w-]+)\s+(\w.*)$', line)
if m:
dif = m.group(1)
vm = m.group(2)
dif_list = m.group(3).split()
if dif in shims:
print('Error: Line %d: dif %s already defined as shim'
% (line_cnt, dif))
continue
difs.setdefault(dif, {
'name': dif}) # Other dict contents might be policies.
if vm in nodes and dif in nodes[vm]['dif_registrations']:
print('Error: Line %d: vm %s in dif %s already specified'
% (line_cnt, vm, dif))
continue
nodes.setdefault(vm, {'name': vm, 'difs': [],
'dif_registrations': {},
'registrations': {}})
nodes[vm]['difs'].append(dif)
nodes[vm]['dif_registrations'] \
[dif] = dif_list
# It is not defined yet, per check above.
continue
# No match, spit a warning
print('Warning: Line %d unrecognized and ignored' % line_cnt)
# File parsed
output = '#!/usr/bin/env/python\n\n'
output += (
"from rumba.model import *\n\n"
"# import testbed plugins\n"
"import rumba.testbeds.emulab as emulab\n"
"import rumba.testbeds.jfed as jfed\n"
"import rumba.testbeds.faketestbed as fake\n"
"import rumba.testbeds.qemu as qemu\n\n"
"# import prototype plugins\n"
"import rumba.prototypes.ouroboros as our\n"
"import rumba.prototypes.rlite as rl\n"
"import rumba.prototypes.irati as irati\n\n"
)
for shim_name, shim in shims.items():
output += '%(n)s = ShimEthDIF("%(n)s", link_speed=%(speed)s))\n' \
% {'n': shim_name, 'speed': shim["speed"]}
output += '\n'
for dif_name, dif in difs.items():
output += '%(n)s = NormalDIF("%(n)s")\n' % {'n': dif_name}
output += '\n'
def str_of_list(i):
return '[' + ', '.join(i) + ']'
def str_of_dict(d):
return '{' + ', '.join(['%s: %s' % (k, str_of_list(v))
for (k, v) in d.items()]) + '}'
for node, node_data in nodes.items():
name = node_data['name']
output += '%(n)s = Node("%(n)s",\n' % {'n': name}
output += ' difs=%s,\n' \
% (str_of_list(node_data['difs']))
output += ' dif_registrations=%s)\n\n' \
% (str_of_dict(node_data['dif_registrations']))
output += ('tb = qemu.Testbed(exp_name = "%(ex_name)s",\n'
' bzimage = "%(bzImage)s",\n'
' initramfs = "%(initramfs)s")\n\n'
'exp = rl.Experiment(tb, nodes = [a, b, c, d])\n\n'
'print(exp)\n\n'
'exp.run()\n'
% {'ex_name': ex_name,
'bzImage': bzImage,
'initramfs': initramfs})
with open(ex_name + '.py', 'w') as out_file:
out_file.write(output)
if __name__ == '__main__':
description = "Demonstrator config file to rumba script converter"
epilog = "2017 Marco Capitani <m.capitani@nextworks.it>"
parser = argparse.ArgumentParser(description=description,
epilog=epilog)
parser.add_argument('config', metavar='CONFIG', type=str,
help='Path to the config file to parse')
parser.add_argument('bz_image', metavar='BZIMAGE', type=str,
help='path to the bzImage file to use')
parser.add_argument('initramfs', metavar='INITRAMFS', type=str,
help='path to the initramfs file to use')
args = parser.parse_args()
try:
make_experiment(args.config, args.bz_image, args.initramfs)
except KeyboardInterrupt:
print("Interrupted. Closing down.")
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