From: Stephen Soltesz <soltesz@cs.princeton.edu>
Date: Thu, 12 Mar 2009 17:33:28 +0000 (+0000)
Subject: moved to pcucontrol module
X-Git-Tag: Monitor-2.0-4~5
X-Git-Url: http://git.onelab.eu/?a=commitdiff_plain;h=e290e60217d9df5e4576345f2266703554630ab8;p=monitor.git
moved to pcucontrol module
---
diff --git a/monitor/util/command.py b/monitor/util/command.py
deleted file mode 100644
index e5663c3..0000000
--- a/monitor/util/command.py
+++ /dev/null
@@ -1,240 +0,0 @@
-import os
-from select import select
-import subprocess
-import signal
-import time
-import traceback
-import fcntl
-
-DEBUG= 0
-
-class ExceptionTimeout(Exception): pass
-class ExceptionReadTimeout(Exception): pass
-COMMAND_TIMEOUT = 60
-ssh_options = { 'StrictHostKeyChecking':'no',
- 'BatchMode':'yes',
- 'PasswordAuthentication':'no',
- 'ConnectTimeout':'%s' % COMMAND_TIMEOUT}
-
-class Sopen(subprocess.Popen):
- def kill(self, sig = signal.SIGTERM):
- try:
- # NOTE: this also kills parent... so doesn't work like I want.
- # NOTE: adding 'exec' before the cmd removes the extra sh, and
- # partially addresses this problem.
- #os.killpg(os.getpgid(self.pid), signal.SIGKILL)
- os.kill(self.pid, sig)
- except OSError:
- # no such process, due to it already exiting...
- pass
-
-
-def read_t(stream, count=1, timeout=COMMAND_TIMEOUT*2):
- if count == 1:
- retstr = ""
-
- while True:
- lin, lout, lerr = select([stream], [], [], timeout)
- if len(lin) == 0:
- print "timeout!"
- raise ExceptionReadTimeout("TIMEOUT reading from command")
-
- try:
- outbytes = stream.read(count)
- except IOError, err:
- print 'no content yet.'
- # due to no content.
- # the select timeout should catch this.
- continue
-
- if not outbytes:
- break
- retstr += outbytes
-
- return retstr
- else:
- lin, lout, lerr = select([stream], [], [], timeout)
- if len(lin) == 0:
- raise ExceptionReadTimeout("TIMEOUT reading from command")
-
- return stream.read(count)
-
-class CMD:
- def __init__(self):
- pass
-
- def run_noexcept(self, cmd, timeout=COMMAND_TIMEOUT*2):
-
- try:
- return CMD.run(self,cmd,timeout)
- except ExceptionTimeout:
- print traceback.print_exc()
- return ("", "ScriptTimeout")
- except ExceptionReadTimeout:
- print traceback.print_exc()
- return ("", "RunningScriptTimeout")
- except Exception, err:
- from monitor.common import email_exception
- email_exception()
- return ("", str(err))
-
- def system(self, cmd, timeout=COMMAND_TIMEOUT*2):
- (o,e) = self.run(cmd, timeout)
- self.output = o
- self.error = e
- if self.s.returncode is None:
- self.s.wait()
- return self.s.returncode
-
- def run(self, cmd, timeout=COMMAND_TIMEOUT*2):
-
- s = Sopen(cmd, shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True)
- self.s = s
- (f_in, f_out, f_err) = (s.stdin, s.stdout, s.stderr)
- lout, lin, lerr = select([f_out], [], [f_err], timeout)
- if len(lin) == 0 and len(lout) == 0 and len(lerr) == 0:
- # Reached a timeout! Nuke process so it does not hang.
- print "TIMEOUT!!!!!!!!!!!!!!!!!!!"
- s.kill(signal.SIGKILL)
- raise ExceptionTimeout("TIMEOUT Running: %s" % cmd)
- else:
- #print "RETURNING"
- #print len(lin), len(lout), len(lerr)
- pass
-
- o_value = ""
- e_value = ""
-
- #o_value = f_out.read()
- flags = fcntl.fcntl(f_out, fcntl.F_GETFL)
- fcntl.fcntl(f_out, fcntl.F_SETFL, flags | os.O_NONBLOCK)
-
- try:
- o_value = read_t(f_out,1,30)
- except ExceptionReadTimeout:
- s.kill(signal.SIGKILL)
- raise ExceptionReadTimeout("TIMEOUT: failed to read from cmd: %s" % cmd)
-
- e_value = f_err.read()
-
- o_value = o_value.strip()
- e_value = e_value.strip()
-
- f_out.close()
- f_in.close()
- f_err.close()
- s.kill(signal.SIGKILL)
-
- return (o_value, e_value)
-
- def runargs(self, args, timeout=COMMAND_TIMEOUT*2):
-
- #print "CMD.run(%s)" % " ".join(args)
- s = Sopen(args, shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True)
- self.s = s
- (f_in, f_out, f_err) = (s.stdin, s.stdout, s.stderr)
- lout, lin, lerr = select([f_out], [], [f_err], timeout)
- if len(lin) == 0 and len(lout) == 0 and len(lerr) == 0:
- # Reached a timeout! Nuke process so it does not hang.
- s.kill(signal.SIGKILL)
- raise ExceptionTimeout("TIMEOUT Running: %s" % cmd)
- o_value = f_out.read()
- e_value = ""
- if o_value == "": # An error has occured
- e_value = f_err.read()
-
- o_value = o_value.strip()
- e_value = e_value.strip()
-
- f_out.close()
- f_in.close()
- f_err.close()
- s.kill(signal.SIGKILL)
-
- return (o_value, e_value)
-
-
-class SSH(CMD):
- def __init__(self, user, host, port=22, options = ssh_options):
- self.options = options
- self.user = user
- self.host = host
- self.port = port
- return
-
- def __options_to_str(self):
- options = ""
- for o,v in self.options.iteritems():
- options = options + "-o %s=%s " % (o,v)
- return options
-
- def run(self, cmd, timeout=COMMAND_TIMEOUT*2):
- cmd = "ssh -p %s %s %s@%s '%s'" % (self.port, self.__options_to_str(),
- self.user, self.host, cmd)
- #print "SSH.run(%s)" % cmd
- return CMD.run(self, cmd, timeout)
-
- def get_file(self, rmt_filename, local_filename=None):
- if local_filename == None:
- local_filename = "./"
- cmd = "scp -P %s -B %s %s@%s:%s %s" % (self.port, self.__options_to_str(),
- self.user, self.host,
- rmt_filename, local_filename)
- # output :
- # errors will be on stderr,
- # success will have a blank stderr...
- return CMD.run_noexcept(self, cmd)
-
- def run_noexcept(self, cmd):
- cmd = "ssh -p %s %s %s@%s '%s'" % (self.port, self.__options_to_str(),
- self.user, self.host, cmd)
- #print "SSH.run_noexcept(%s)" % cmd
- return CMD.run_noexcept(self, cmd)
-
- def run_noexcept2(self, cmd, timeout=COMMAND_TIMEOUT*2):
- cmd = "exec ssh -p %s %s %s@%s %s" % (self.port, self.__options_to_str(),
- self.user, self.host, cmd)
- r = CMD.run_noexcept(self, cmd, timeout)
- self.ret = -1
-
- return r
-
- def system2(self, cmd, timeout=COMMAND_TIMEOUT*2):
- cmd = "ssh -p %s %s %s@%s %s" % (self.port, self.__options_to_str(),
- self.user, self.host, cmd)
- #print "SSH.system2(%s)" % cmd
- return CMD.system(self, cmd, timeout)
-
- def runE(self, cmd):
- cmd = "ssh -p %s %s %s@%s '%s'" % (self.port, self.__options_to_str(),
- self.user, self.host, cmd)
- if ( DEBUG == 1 ):
- print cmd,
- (f_in, f_out, f_err) = os.popen3(cmd)
-
- value = f_out.read()
- if value == "": # An error has occured
- value = f_err.read()
- value = value.strip()
-
- if ( DEBUG == 1 ):
- print " == %s" % value
- f_out.close()
- f_in.close()
- f_err.close()
- return value.strip()
-
-class MyTimer:
- def __init__(self):
- self.start = time.time()
-
- def end(self):
- self.end = time.time()
- t = self.end-self.start
- return t
-
- def diff(self):
- self.end = time.time()
- t = self.end-self.start
- self.start = self.end
- return t