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""" Copyright 2012 NetApp, Inc. All Rights Reserved,
contribution by Weston Andros Adamson <dros@netapp.com>
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 2 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.
"""
import os
import errno
import re
from .cmd import *
from .config import *
_re_which = re.compile('[\s\S]*which: no (\S+) in \([\s\S]*')
def _mkdir_quiet(path):
try:
os.mkdir(path)
except OSError as e:
if e.errno != errno.EEXIST:
raise e
# Base Class for NFS workloads
class Workload:
def __init__(self, defname, rundir_suffix=''):
self.defname = defname
self.env = {}
self.env['PATH'] = '.:/bin:/sbin:/usr/bin:/usr/sbin/:/usr/local/bin:/usr/local/sbin/'
self.rundir = os.path.join(RUNROOT, defname.replace(' ', '_'))
if rundir_suffix:
self.rundir += '_' + rundir_suffix.replace(' ', '_')
self.localdir = os.path.join(WORKLOADFILES_ROOT, defname.replace(' ', '_'))
self.script = """RUNDIR="%s" LOCALDIR="%s" %s""" % \
(self.rundir, self.localdir, WORKLOADS_SCRIPT)
self._cache = {}
self.create_localdir()
def create_rundir(self):
_mkdir_quiet(RUNROOT)
_mkdir_quiet(self.rundir)
def create_localdir(self):
_mkdir_quiet(NFSOMETER_DIR)
_mkdir_quiet(WORKLOADFILES_ROOT)
_mkdir_quiet(self.localdir)
def remove_rundir(self):
sys.stdout.write('removing run directory...')
sys.stdout.flush()
cmd('rm -rf %s' % self.rundir)
sys.stdout.write('done\n')
sys.stdout.flush()
def loadgen_setup(self):
self.remove_rundir()
self.create_rundir()
def setup(self):
self.remove_rundir()
self.create_rundir()
oldcwd = os.getcwd()
os.chdir(self.localdir)
sys.stdout.flush()
cmd('%s setup %s' % (self.script, self.defname))
os.chdir(oldcwd)
def fetch(self):
url = self.url()
url_out = self.url_out()
if url and url_out:
assert not '/' in url_out
oldcwd = os.getcwd()
os.chdir(self.localdir)
if not os.path.exists(url_out):
if url.startswith('git://'):
print("Fetching git: %s" % url)
fetch_cmd = 'git clone "%s" "%s"' % (url, url_out)
else:
print("Fetching url: %s" % url)
fetch_cmd = 'wget -O "%s" "%s"' % (url_out, url)
try:
cmd(fetch_cmd, pass_output=True, raiseerrorout=True)
except Exception as e:
cmd('rm -rf "%s"' % url_out)
finally:
if not os.path.exists(url_out):
warn("Error error fetching '%s'" % url)
sys.exit(1)
os.chdir(oldcwd)
else:
assert not url and not url_out
def check(self):
if not 'check' in self._cache:
res = cmd('%s check %s' % (self.script, self.defname))
res = ', '.join([ x.strip() for x in res[0]]).strip()
self._cache['check'] = res
return self._cache['check']
def command(self):
if not 'command' in self._cache:
res = cmd('%s command %s' % (self.script, self.defname))
res = '\n'.join(res[0]).strip()
assert not '\n' in res
self._cache['command'] = res
return self._cache['command']
def description(self):
if not 'description' in self._cache:
res = cmd('%s description %s' % (self.script, self.defname))
res = '\n'.join(res[0]).strip()
assert not '\n' in res
self._cache['description'] = res
return self._cache['description']
def name(self):
if not 'name' in self._cache:
res = cmd('%s name %s' % (self.script, self.defname))
res = '\n'.join(res[0]).strip()
assert not '\n' in res
self._cache['name'] = res
return self._cache['name']
def url(self):
if not 'url' in self._cache:
res = cmd('%s url %s' % (self.script, self.defname))
res = '\n'.join(res[0]).strip()
assert not '\n' in res
self._cache['url'] = res
return self._cache['url']
def url_out(self):
if not 'url_out' in self._cache:
res = cmd('%s url_out %s' % (self.script, self.defname))
res = '\n'.join(res[0]).strip()
assert not '\n' in res
self._cache['url_out'] = res
return self._cache['url_out']
def run(self):
logfile = os.path.join(RUNNING_TRACE_DIR, 'test.log')
timefile = os.path.join(RUNNING_TRACE_DIR, 'test.time')
cmdfile = os.path.join(RUNNING_TRACE_DIR, 'command.sh')
command = self.command()
print("Running command: %s" % command)
sys.stdout.flush()
oldcwd = os.getcwd()
os.chdir(self.rundir)
# write command to file
with open(cmdfile, 'w+') as f:
f.write(command)
sh_cmd = "sh %s > %s 2>&1" % (cmdfile, logfile)
wrapped_cmd = '( time ( %s ) ) 2> %s' % (sh_cmd, timefile)
try:
cmd(wrapped_cmd, env=self.env, pass_output=True, raiseerrorout=False)
except KeyboardInterrupt:
os.chdir(oldcwd)
# re-raise
raise KeyboardInterrupt
except Exception as e:
os.chdir(oldcwd)
# re-raise
raise e
else:
os.chdir(oldcwd)
def run_no_tracedir(self):
# we're not tracing, so just store these files in NFSland
logfile = os.path.join(self.rundir, 'test.log')
cmdfile = os.path.join(self.rundir, 'command.sh')
command = self.command()
print("Running command without trace: %s" % command)
sys.stdout.flush()
oldcwd = os.getcwd()
os.chdir(self.rundir)
# write command to file
with open(cmdfile, 'w+') as f:
f.write(command)
sh_cmd = "sh %s > %s 2>&1" % (cmdfile, logfile)
try:
cmd(sh_cmd, env=self.env, pass_output=True, raiseerrorout=False)
except KeyboardInterrupt:
os.chdir(oldcwd)
# re-raise
raise KeyboardInterrupt
except Exception as e:
os.chdir(oldcwd)
# re-raise
raise e
else:
os.chdir(oldcwd)
WORKLOADS = {}
res = cmd('%s list' % WORKLOADS_SCRIPT)
workloads = '\n'.join(res[0]).strip().split(' ')
for w in workloads:
WORKLOADS[w] = Workload(w)
def workload_command(workload, pretty=False):
if workload == os.getenv('NFSOMETER_NAME', None):
workload = 'custom'
try:
obj = WORKLOADS[workload]
except:
return '# (unknown)'
cmdstr = obj.command()
if pretty:
cmdstr = cmdstr.replace(' && ', '\n')
cmdstr = cmdstr.replace(os.path.join(WORKLOADFILES_ROOT, workload),
'${workload_dir}')
cmdstr = cmdstr.replace(os.path.join(RUNROOT, workload),
'${run_dir}')
return cmdstr
def workload_description(workload):
if workload == os.getenv('NFSOMETER_NAME', None):
workload = 'custom'
try:
obj = WORKLOADS[workload]
except:
return '# (unknown)'
return obj.description()
def available_workloads():
o = []
defnames = sorted( WORKLOADS.keys() )
for defname in defnames:
check_mesg = WORKLOADS[defname].check()
if not check_mesg:
o.append('%s' % (defname,))
return o
def unavailable_workloads():
""" return a string containing a comma separated list of the available
workload """
o = []
defnames = list(WORKLOADS.keys())
defnames.sort()
for defname in defnames:
check_mesg = WORKLOADS[defname].check()
if check_mesg:
o.append('%-20s - %s' % (defname, check_mesg))
return o
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