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we dont really need which; it is a pain in the ass dep anyway
author Jeff Hammel <k0scist@gmail.com>
date Mon, 13 Apr 2015 15:47:46 -0700
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1 #!/usr/bin/env python
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2 # -*- coding: utf-8 -*-
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3
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4 """
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5 add supervisor jobs
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6 """
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7
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8 # imports
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9 import argparse
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10 import os
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11 import shlex
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12 import subprocess
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13 import sys
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14 import time
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15
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16 # module globals
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17 __all__ = ['main', 'SupervisorAdminParser']
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18 SUPERVISOR_CONF = '/etc/supervisor/conf.d'
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20 template = """[program:{name}]
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21 command={command}
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22 autorestart=true
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23 redirect_stderr=true
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24 startretries={retries}
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25 stopasgroup=true
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26 stopwaitsecs=180
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27 user={user}
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28 """
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29
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30 def basename(filename):
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31 return os.path.splitext(os.path.basename(filename))[0]
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32
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33 class SupervisorAdminParser(argparse.ArgumentParser):
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34 """CLI option parser"""
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35 def __init__(self, **kwargs):
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36 kwargs.setdefault('formatter_class', argparse.RawTextHelpFormatter)
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37 kwargs.setdefault('description', __doc__)
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38 argparse.ArgumentParser.__init__(self, **kwargs)
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39 self.add_argument('command',
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40 help="command to add")
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41 self.add_argument('-n', '--name', dest='name',
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42 help="name of program; by default taken from command")
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43 self.add_argument('-u', '--user', dest='user', default='root',
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44 help="run program as this user [DEFAULT: %(default)s]")
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45 self.add_argument('--retries', dest='retries',
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46 type=int, default=100,
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47 help="number of retries [DEFAULT: %(default)s]")
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48 self.add_argument('-o', '--output', dest='output',
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49 type=argparse.FileType('w'),
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50 nargs='?',
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51 const=sys.stdout,
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52 help="output configuration and exit [DEFAULT: %(default)s]")
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53 self.options = None
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54
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55 def parse_args(self, *args, **kw):
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56 options = argparse.ArgumentParser.parse_args(self, *args, **kw)
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57 self.validate(options)
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58 self.options = options
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59 return options
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60
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61 def validate(self, options):
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62 """validate options"""
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63
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64 def main(args=sys.argv[1:]):
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65 """CLI"""
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66
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67 # parse command line options
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68 parser = SupervisorAdminParser()
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69 options = parser.parse_args(args)
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70
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71 # get command
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72 command = shlex.split(options.command)
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73 if not command:
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74 parser.error("Please supply a command")
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75
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76 # name
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77 name = options.name or basename(command[0])
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78
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79 # output configuration file
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80 output = options.output or open(os.path.join(SUPERVISOR_CONF, '{}.conf'.format(name)), 'w')
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81
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82 output.write(template.format(name=name,
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83 user=options.user,
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84 retries=options.retries,
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85 command=options.command))
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86 output.close()
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87
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88 if options.output is None:
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89 # update the supervisor state
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90 subprocess.check_call(['sudo', 'supervisorctl', 'update'])
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91
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92 if __name__ == '__main__':
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93 main()