87b9f0b87b
In some newer Linux distributions, env python default to Python 3.0. This patch explicitly uses "python2" instead of just "python" for all scripts that use #! Reported-by: Sanchayan Maity <maitysanchayan@gmail.com> Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
239 lines
8.8 KiB
Python
Executable file
239 lines
8.8 KiB
Python
Executable file
#! /usr/bin/env python2
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# Copyright (c) 2004-2005, 2007 The Regents of The University of Michigan
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# Authors: Steve Reinhardt
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# Ali Saidi
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# Important!
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# This script expects a simple $ prompt, if you are using a shell other than
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# sh which defaults to this you'll need to add something like the following
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# to your bashrc/bash_profile script:
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#if [ "$OAR_USER" = "xxxx" ]; then
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# PS1='$ '
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import sys
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import os
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import re
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import time
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import optparse
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import pexpect
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progname = os.path.basename(sys.argv[0])
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usage = "%prog [options] command [command arguments]"
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optparser = optparse.OptionParser(usage=usage)
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optparser.allow_interspersed_args=False
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optparser.add_option('-e', dest='stderr_file',
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help='command stderr output file')
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optparser.add_option('-o', dest='stdout_file',
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help='command stdout output file')
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optparser.add_option('-l', dest='save_log', action='store_true',
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help='save oarsub output log file')
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optparser.add_option('-N', dest='job_name',
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help='oarsub job name')
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optparser.add_option('-q', dest='dest_queue',
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help='oarsub destination queue')
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optparser.add_option('--qwait', dest='oarsub_timeout', type='int',
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help='oarsub queue wait timeout', default=30*60)
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optparser.add_option('-t', dest='cmd_timeout', type='int',
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help='command execution timeout', default=600*60)
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(options, cmd) = optparser.parse_args()
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if cmd == []:
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print >>sys.stderr, "%s: missing command" % progname
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sys.exit(1)
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# If we want to do this, need to add check here to make sure cmd[0] is
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# a valid PBS job name, else oarsub will die on us.
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#
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#if not options.job_name:
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# options.job_name = cmd[0]
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cwd = os.getcwd()
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# Deal with systems where /n is a symlink to /.automount
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if cwd.startswith('/.automount/'):
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cwd = cwd.replace('/.automount/', '/n/', 1)
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if not cwd.startswith('/n/poolfs/'):
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print >>sys.stderr, "Error: current directory must be under /n/poolfs."
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sys.exit(1)
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# The Shell class wraps pexpect.spawn with some handy functions that
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# assume the thing on the other end is a Bourne/bash shell.
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class Shell(pexpect.spawn):
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# Regexp to match the shell prompt. We change the prompt to
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# something fixed and distinctive to make it easier to match
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# reliably.
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prompt_re = re.compile('qdo\$ ')
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def __init__(self, cmd):
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# initialize base pexpect.spawn object
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try:
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pexpect.spawn.__init__(self, cmd)
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except pexpect.ExceptionPexpect, exc:
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print "%s:" % progname, exc
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sys.exit(1)
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# full_output accumulates the full output of the session
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self.full_output = ""
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self.quick_timeout = 15
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# wait for a prompt, then change it
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try:
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self.expect('\$ ', options.oarsub_timeout)
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except pexpect.TIMEOUT:
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print >>sys.stderr, "%s: oarsub timed out." % progname
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self.kill(9)
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self.safe_close()
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sys.exit(1)
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self.do_command('unset PROMPT_COMMAND; PS1="qdo$ "')
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# version of expect that updates full_output too
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def expect(self, regexp, timeout = -1):
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pexpect.spawn.expect(self, regexp, timeout)
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self.full_output += self.before + self.after
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# Just issue a command and wait for the next prompt.
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# Returns a string containing the output of the command.
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def do_bare_command(self, cmd, timeout = -1):
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global full_output
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self.sendline(cmd)
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# read back the echo of the command
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self.readline()
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# wait for the next prompt
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self.expect(self.prompt_re, timeout)
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output = self.before.rstrip()
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return output
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# Issue a command, then query its exit status.
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# Returns a (string, int) tuple with the command output and the status.
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def do_command(self, cmd, timeout = -1):
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# do the command itself
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output = self.do_bare_command(cmd, timeout)
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# collect status
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status = int(self.do_bare_command("echo $?", self.quick_timeout))
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return (output, status)
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# Check to see if the given directory exists.
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def dir_exists(self, dirname):
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(output, status) = shell.do_command('[ -d %s ]' % dirname,
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self.quick_timeout)
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return status == 0
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# Don't actually try to close it.. just wait until it closes by itself
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# We can't actually kill the pid which is what it's trying to do, and if
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# we call wait we could be in an unfortunate situation of it printing input
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# right as we call wait, so the input is never read and the process never ends
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def safe_close(self):
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count = 0
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while self.isalive() and count < 10:
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time.sleep(1)
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self.close(force=False)
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# Spawn the interactive pool job.
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# Hack to do link on poolfs... disabled for now since
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# compiler/linker/library versioning problems between poolfs and
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# nodes. May never work since poolfs is x86-64 and nodes are 32-bit.
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if False and len(cmd) > 50:
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shell_cmd = 'ssh -t poolfs /bin/sh -l'
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print "%s: running %s on poolfs" % (progname, cmd[0])
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else:
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shell_cmd = 'oarsub -I'
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if options.job_name:
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shell_cmd += ' -n "%s"' % options.job_name
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if options.dest_queue:
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shell_cmd += ' -q ' + options.dest_queue
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shell_cmd += ' -d %s' % cwd
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shell = Shell(shell_cmd)
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try:
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# chdir to cwd
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(output, status) = shell.do_command('cd ' + cwd)
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if status != 0:
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raise OSError, "Can't chdir to %s" % cwd
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# wacky hack: sometimes scons will create an output directory then
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# fork a job to generate files in that directory, and the job will
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# get run before the directory creation propagates through NFS.
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# This hack looks for a '-o' option indicating an output file and
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# waits for the corresponding directory to appear if necessary.
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try:
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if 'cc' in cmd[0] or 'g++' in cmd[0]:
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output_dir = os.path.dirname(cmd[cmd.index('-o')+1])
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elif 'm5' in cmd[0]:
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output_dir = cmd[cmd.index('-d')+1]
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else:
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output_dir = None
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except (ValueError, IndexError):
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# no big deal if there's no '-o'/'-d' or if it's the final argument
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output_dir = None
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if output_dir:
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secs_waited = 0
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while not shell.dir_exists(output_dir) and secs_waited < 90:
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time.sleep(5)
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secs_waited += 5
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if secs_waited > 30:
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print "waited", secs_waited, "seconds for", output_dir
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# run command
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if options.stdout_file:
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cmd += ['>', options.stdout_file]
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if options.stderr_file:
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cmd += ['2>', options.stderr_file]
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try:
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(output, status) = shell.do_command(' '.join(cmd), options.cmd_timeout)
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except pexpect.TIMEOUT:
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print >>sys.stderr, "%s: command timed out after %d seconds." \
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% (progname, options.cmd_timeout)
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shell.sendline('~.') # oarsub/ssh termination escape sequence
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shell.safe_close()
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status = 3
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if output:
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print output
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finally:
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# end job
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if shell.isalive():
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shell.sendline('exit')
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shell.expect('Disconnected from OAR job .*')
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shell.safe_close()
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# if there was an error, log the output even if not requested
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if status != 0 or options.save_log:
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log = file('qdo-log.' + str(os.getpid()), 'w')
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log.write(shell.full_output)
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log.close()
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del shell
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sys.exit(status)
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