projects / oddments / cappie.git / blame
| Commit | Line | Data |
|---|---|---|
| 53478050 MT |
1 | #!/usr/bin/python |
| 2 | ############################################################################### | |
| 3 | # # | |
| 4 | # Cappie # | |
| 5 | # Copyright (C) 2010 Michael Tremer # | |
| 6 | # # | |
| 7 | # This program is free software: you can redistribute it and/or modify # | |
| 8 | # it under the terms of the GNU General Public License as published by # | |
| 9 | # the Free Software Foundation, either version 3 of the License, or # | |
| 10 | # (at your option) any later version. # | |
| 11 | # # | |
| 12 | # This program is distributed in the hope that it will be useful, # | |
| 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of # | |
| 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # | |
| 15 | # GNU General Public License for more details. # | |
| 16 | # # | |
| 17 | # You should have received a copy of the GNU General Public License # | |
| 18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. # | |
| 19 | # # | |
| 20 | ############################################################################### | |
| 21 | ||
| 22 | import os | |
| 23 | import subprocess | |
| 24 | import time | |
| 25 | ||
| 26 | from errors import * | |
| 27 | ||
| 28 | class Event(object): | |
| 29 | def __init__(self, interface): | |
| 30 | self.cappie = interface.cappie | |
| 31 | self.interface = interface | |
| 32 | self.log = interface.log | |
| 33 | ||
| 34 | def __str__(self): | |
| 35 | return self.__class__.__name__ | |
| 36 | ||
| 37 | def run(self): | |
| 38 | raise NotImplementedError | |
| 39 | ||
| 40 | ||
| 41 | class EventShell(Event): | |
| 42 | heartbeat = 0.1 | |
| 43 | timeout = 10 | |
| 44 | ||
| 45 | def __init__(self, interface, script): | |
| 46 | Event.__init__(self, interface) | |
| 47 | ||
| 48 | self.script = script | |
| 49 | ||
| 50 | def run(self): | |
| 51 | args = " ".join([self.script, self.interface.dev]) | |
| 52 | ||
| 53 | start = time.time() | |
| 54 | self.log.debug("Running: %s" % args) | |
| 55 | ||
| 56 | p = subprocess.Popen(args, | |
| 57 | close_fds=True, | |
| 58 | shell=True, | |
| 59 | stdin=open("/dev/null", "r"), | |
| 60 | stdout=subprocess.PIPE, | |
| 61 | stderr=subprocess.STDOUT) | |
| 62 | ||
| 63 | while p.poll() is None: | |
| 64 | time.sleep(self.heartbeat) | |
| 65 | if (time.time() - start) > self.timeout: | |
| 66 | try: | |
| 67 | os.killpg(p.pid, 9) | |
| 68 | except OSError: | |
| 69 | pass | |
| 70 | raise EventTimeout, "Script took too long to return" | |
| 71 | ||
| 72 | for line in p.stdout.read().splitlines(): | |
| 73 | if not line: continue | |
| 74 | self.log.debug(" %s" % line) | |
| 75 | ||
| 76 | self.cappie.log.debug("Child process returned with exit code: %s" % \ | |
| 77 | p.returncode) | |
| 78 | ||
| 79 | return p.returncode |