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#!/usr/bin/python
#
# Copyright 2010, 2011 Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import cliapp
import ConfigParser
import glob
import logging
import os
import shutil
import socket
import subprocess
import tempfile
class ObnamBenchmark(cliapp.Application):
default_sizes = ['1g/100m']
keyid = '3B1802F81B321347'
opers = ('backup', 'restore', 'list_files', 'forget')
def add_settings(self):
self.settings.string(['results'], 'put results under DIR (%default)',
metavar='DIR', default='../benchmarks')
self.settings.string(['obnam-branch'],
'use DIR as the obnam branch to benchmark '
'(default: %default)',
metavar='DIR',
default='.')
self.settings.string(['larch-branch'],
'use DIR as the larch branch (default: %default)',
metavar='DIR',
default=os.path.expanduser('~/larch/trunk'))
self.settings.string(['seivot-branch'],
'use DIR as the seivot branch '
'(default: installed seivot)',
metavar='DIR')
self.settings.boolean(['with-encryption'],
'run benchmark using encryption')
self.settings.string(['profile-name'],
'short name for benchmark scenario',
default='unknown')
self.settings.string_list(['size'],
'add PAIR to list of sizes to '
'benchmark (e.g., 10g/1m)',
metavar='PAIR')
self.settings.bytesize(['file-size'], 'how big should files be?',
default=4096)
self.settings.integer(['generations'],
'benchmark N generations (default: %default)',
metavar='N',
default=5)
self.settings.boolean(['use-sftp-repository'],
'access the repository over SFTP '
'(requires ssh to localhost to work)')
self.settings.boolean(['use-sftp-root'],
'access the live data over SFTP '
'(requires ssh to localhost to work)')
self.settings.integer(['sftp-delay'],
'add artifical delay to sftp transfers '
'(in milliseconds)')
self.settings.string(['description'], 'describe benchmark')
self.settings.boolean(['drop-caches'], 'drop kernel buffer caches')
self.settings.string(['seivot-log'], 'seivot log setting')
self.settings.boolean(['verify'], 'verify restores')
def process_args(self, args):
self.require_tmpdir()
obnam_revno = self.bzr_revno(self.settings['obnam-branch'])
larch_revno = self.bzr_revno(self.settings['larch-branch'])
results = self.results_dir(obnam_revno, larch_revno)
obnam_branch = self.settings['obnam-branch']
larch_branch = self.settings['larch-branch']
if self.settings['seivot-branch']:
seivot = os.path.join(self.settings['seivot-branch'], 'seivot')
else:
seivot = 'seivot'
generations = self.settings['generations']
tempdir = tempfile.mkdtemp()
env = self.setup_gnupghome(tempdir)
sizes = self.settings['size'] or self.default_sizes
logging.debug('sizes: %s' % repr(sizes))
file_size = self.settings['file-size']
profile_name = self.settings['profile-name']
for pair in sizes:
initial, inc = self.parse_size_pair(pair)
msg = 'Profile %s, size %s inc %s' % (profile_name, initial, inc)
print
print msg
print '-' * len(msg)
print
obnam_profile = os.path.join(results,
'obnam--%(op)s-%(gen)s.prof')
output = os.path.join(results, 'obnam.seivot')
if os.path.exists(output):
print ('%s already exists, not re-running benchmark' %
output)
else:
argv = [seivot,
'--obnam-branch', obnam_branch,
'--larch-branch', larch_branch,
'--incremental-data', inc,
'--file-size', str(file_size),
'--obnam-profile', obnam_profile,
'--generations', str(generations),
'--profile-name', profile_name,
'--sftp-delay', str(self.settings['sftp-delay']),
'--initial-data', initial,
'--output', output]
if self.settings['seivot-log']:
argv.extend(['--log', self.settings['seivot-log']])
if self.settings['drop-caches']:
argv.append('--drop-caches')
if self.settings['use-sftp-repository']:
argv.append('--use-sftp-repository')
if self.settings['use-sftp-root']:
argv.append('--use-sftp-root')
if self.settings['with-encryption']:
argv.extend(['--encrypt-with', self.keyid])
if self.settings['description']:
argv.extend(['--description',
self.settings['description']])
if self.settings['verify']:
argv.append('--verify')
self.runcmd(argv, env=env)
shutil.rmtree(tempdir)
def require_tmpdir(self):
if 'TMPDIR' not in os.environ:
raise cliapp.AppException('TMPDIR is not set. '
'You would probably run out of space '
'on /tmp.')
if not os.path.exists(os.environ['TMPDIR']):
raise cliapp.AppException('TMPDIR points at a non-existent '
'directory %s' % os.environ['TMPDIR'])
logging.debug('TMPDIR=%s' % repr(os.environ['TMPDIR']))
@property
def hostname(self):
return socket.gethostname()
@property
def obnam_branch_name(self):
obnam_branch = os.path.abspath(self.settings['obnam-branch'])
return os.path.basename(obnam_branch)
def results_dir(self, obnam_revno, larch_revno):
parent = self.settings['results']
counter = 0
while True:
counter += 1
parts = [
self.hostname,
self.obnam_branch_name,
str(obnam_revno),
str(larch_revno),
str(counter),
]
basename = '-'.join(parts)
dirname = os.path.join(parent, basename)
if not os.path.exists(dirname):
os.mkdir(dirname)
return dirname
def setup_gnupghome(self, tempdir):
gnupghome = os.path.join(tempdir, 'gnupghome')
shutil.copytree('test-gpghome', gnupghome)
env = dict(os.environ)
env['GNUPGHOME'] = gnupghome
return env
def bzr_revno(self, branch):
p = subprocess.Popen(['bzr', 'revno'], cwd=branch,
stdout=subprocess.PIPE)
out, err = p.communicate()
if p.returncode != 0:
raise cliapp.AppException('bzr failed')
revno = out.strip()
logging.debug('bzr branch %s has revno %s' % (branch, revno))
return revno
def parse_size_pair(self, pair):
return pair.split('/', 1)
if __name__ == '__main__':
ObnamBenchmark().run()
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