root / lib / daemon.py @ 1fe93c75
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1 | 821d9e43 | Michael Hanselmann | #
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2 | 821d9e43 | Michael Hanselmann | #
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3 | 821d9e43 | Michael Hanselmann | |
4 | 821d9e43 | Michael Hanselmann | # Copyright (C) 2006, 2007, 2008 Google Inc.
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5 | 821d9e43 | Michael Hanselmann | #
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6 | 821d9e43 | Michael Hanselmann | # This program is free software; you can redistribute it and/or modify
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7 | 821d9e43 | Michael Hanselmann | # it under the terms of the GNU General Public License as published by
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8 | 821d9e43 | Michael Hanselmann | # the Free Software Foundation; either version 2 of the License, or
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9 | 821d9e43 | Michael Hanselmann | # (at your option) any later version.
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10 | 821d9e43 | Michael Hanselmann | #
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11 | 821d9e43 | Michael Hanselmann | # This program is distributed in the hope that it will be useful, but
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12 | 821d9e43 | Michael Hanselmann | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | 821d9e43 | Michael Hanselmann | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | 821d9e43 | Michael Hanselmann | # General Public License for more details.
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15 | 821d9e43 | Michael Hanselmann | #
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16 | 821d9e43 | Michael Hanselmann | # You should have received a copy of the GNU General Public License
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17 | 821d9e43 | Michael Hanselmann | # along with this program; if not, write to the Free Software
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18 | 821d9e43 | Michael Hanselmann | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | 821d9e43 | Michael Hanselmann | # 02110-1301, USA.
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20 | 821d9e43 | Michael Hanselmann | |
21 | 821d9e43 | Michael Hanselmann | |
22 | 821d9e43 | Michael Hanselmann | """Module with helper classes and functions for daemons"""
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23 | 821d9e43 | Michael Hanselmann | |
24 | 821d9e43 | Michael Hanselmann | |
25 | 3b1b0cb6 | Guido Trotter | import os |
26 | 821d9e43 | Michael Hanselmann | import select |
27 | 821d9e43 | Michael Hanselmann | import signal |
28 | 821d9e43 | Michael Hanselmann | import errno |
29 | b11c9e5c | Michael Hanselmann | import time |
30 | 04ccf5e9 | Guido Trotter | import logging |
31 | 821d9e43 | Michael Hanselmann | |
32 | 821d9e43 | Michael Hanselmann | from ganeti import utils |
33 | 04ccf5e9 | Guido Trotter | from ganeti import constants |
34 | 821d9e43 | Michael Hanselmann | |
35 | 821d9e43 | Michael Hanselmann | |
36 | b11c9e5c | Michael Hanselmann | class Timer(object): |
37 | b11c9e5c | Michael Hanselmann | def __init__(self, owner, timer_id, start, interval, repeat): |
38 | b11c9e5c | Michael Hanselmann | self.owner = owner
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39 | b11c9e5c | Michael Hanselmann | self.timer_id = timer_id
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40 | b11c9e5c | Michael Hanselmann | self.start = start
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41 | b11c9e5c | Michael Hanselmann | self.interval = interval
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42 | b11c9e5c | Michael Hanselmann | self.repeat = repeat
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43 | b11c9e5c | Michael Hanselmann | |
44 | b11c9e5c | Michael Hanselmann | |
45 | 821d9e43 | Michael Hanselmann | class Mainloop(object): |
46 | 821d9e43 | Michael Hanselmann | """Generic mainloop for daemons
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47 | 821d9e43 | Michael Hanselmann |
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48 | 821d9e43 | Michael Hanselmann | """
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49 | 821d9e43 | Michael Hanselmann | def __init__(self): |
50 | b14b975f | Michael Hanselmann | """Constructs a new Mainloop instance.
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51 | b14b975f | Michael Hanselmann |
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52 | b14b975f | Michael Hanselmann | """
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53 | b14b975f | Michael Hanselmann | self._io_wait = {}
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54 | b14b975f | Michael Hanselmann | self._io_wait_add = []
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55 | b14b975f | Michael Hanselmann | self._io_wait_remove = []
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56 | 821d9e43 | Michael Hanselmann | self._signal_wait = []
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57 | b11c9e5c | Michael Hanselmann | self._timer_id_last = 0 |
58 | b11c9e5c | Michael Hanselmann | self._timer = {}
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59 | b11c9e5c | Michael Hanselmann | self._timer_add = []
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60 | b11c9e5c | Michael Hanselmann | self._timer_remove = []
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61 | 821d9e43 | Michael Hanselmann | |
62 | b14b975f | Michael Hanselmann | def Run(self, handle_sigchld=True, handle_sigterm=True, stop_on_empty=False): |
63 | b14b975f | Michael Hanselmann | """Runs the mainloop.
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64 | b14b975f | Michael Hanselmann |
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65 | b14b975f | Michael Hanselmann | @type handle_sigchld: bool
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66 | b14b975f | Michael Hanselmann | @param handle_sigchld: Whether to install handler for SIGCHLD
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67 | b14b975f | Michael Hanselmann | @type handle_sigterm: bool
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68 | b14b975f | Michael Hanselmann | @param handle_sigterm: Whether to install handler for SIGTERM
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69 | b14b975f | Michael Hanselmann | @type stop_on_empty: bool
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70 | b14b975f | Michael Hanselmann | @param stop_on_empty: Whether to stop mainloop once all I/O waiters
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71 | b14b975f | Michael Hanselmann | unregistered
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72 | b14b975f | Michael Hanselmann |
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73 | b14b975f | Michael Hanselmann | """
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74 | 821d9e43 | Michael Hanselmann | poller = select.poll() |
75 | 821d9e43 | Michael Hanselmann | |
76 | b14b975f | Michael Hanselmann | # Setup signal handlers
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77 | b14b975f | Michael Hanselmann | if handle_sigchld:
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78 | b14b975f | Michael Hanselmann | sigchld_handler = utils.SignalHandler([signal.SIGCHLD]) |
79 | b14b975f | Michael Hanselmann | else:
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80 | b14b975f | Michael Hanselmann | sigchld_handler = None
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81 | 821d9e43 | Michael Hanselmann | try:
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82 | b14b975f | Michael Hanselmann | if handle_sigterm:
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83 | b14b975f | Michael Hanselmann | sigterm_handler = utils.SignalHandler([signal.SIGTERM]) |
84 | b14b975f | Michael Hanselmann | else:
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85 | b14b975f | Michael Hanselmann | sigterm_handler = None
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86 | b14b975f | Michael Hanselmann | |
87 | b14b975f | Michael Hanselmann | try:
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88 | b14b975f | Michael Hanselmann | running = True
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89 | b11c9e5c | Michael Hanselmann | timeout = None
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90 | b11c9e5c | Michael Hanselmann | timeout_needs_update = True
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91 | b14b975f | Michael Hanselmann | |
92 | b14b975f | Michael Hanselmann | # Start actual main loop
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93 | b14b975f | Michael Hanselmann | while running:
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94 | b14b975f | Michael Hanselmann | # Entries could be added again afterwards, hence removing first
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95 | b14b975f | Michael Hanselmann | if self._io_wait_remove: |
96 | b14b975f | Michael Hanselmann | for fd in self._io_wait_remove: |
97 | b14b975f | Michael Hanselmann | try:
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98 | b14b975f | Michael Hanselmann | poller.unregister(fd) |
99 | b14b975f | Michael Hanselmann | except KeyError: |
100 | b14b975f | Michael Hanselmann | pass
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101 | b14b975f | Michael Hanselmann | try:
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102 | b14b975f | Michael Hanselmann | del self._io_wait[fd] |
103 | b14b975f | Michael Hanselmann | except KeyError: |
104 | b14b975f | Michael Hanselmann | pass
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105 | b14b975f | Michael Hanselmann | self._io_wait_remove = []
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106 | b14b975f | Michael Hanselmann | |
107 | b14b975f | Michael Hanselmann | # Add new entries
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108 | b14b975f | Michael Hanselmann | if self._io_wait_add: |
109 | b14b975f | Michael Hanselmann | for (owner, fd, conditions) in self._io_wait_add: |
110 | b14b975f | Michael Hanselmann | self._io_wait[fd] = owner
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111 | b14b975f | Michael Hanselmann | poller.register(fd, conditions) |
112 | b14b975f | Michael Hanselmann | self._io_wait_add = []
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113 | b14b975f | Michael Hanselmann | |
114 | b11c9e5c | Michael Hanselmann | # Add new timers
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115 | b11c9e5c | Michael Hanselmann | if self._timer_add: |
116 | b11c9e5c | Michael Hanselmann | timeout_needs_update = True
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117 | b11c9e5c | Michael Hanselmann | for timer in self._timer_add: |
118 | b11c9e5c | Michael Hanselmann | self._timer[timer.timer_id] = timer
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119 | b11c9e5c | Michael Hanselmann | del self._timer_add[:] |
120 | b11c9e5c | Michael Hanselmann | |
121 | b11c9e5c | Michael Hanselmann | # Remove timers
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122 | b11c9e5c | Michael Hanselmann | if self._timer_remove: |
123 | b11c9e5c | Michael Hanselmann | timeout_needs_update = True
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124 | b11c9e5c | Michael Hanselmann | for timer_id in self._timer_remove: |
125 | b11c9e5c | Michael Hanselmann | try:
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126 | b11c9e5c | Michael Hanselmann | del self._timer[timer_id] |
127 | b11c9e5c | Michael Hanselmann | except KeyError: |
128 | b11c9e5c | Michael Hanselmann | pass
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129 | b11c9e5c | Michael Hanselmann | del self._timer_remove[:] |
130 | b11c9e5c | Michael Hanselmann | |
131 | b14b975f | Michael Hanselmann | # Stop if nothing is listening anymore
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132 | b11c9e5c | Michael Hanselmann | if stop_on_empty and not (self._io_wait or self._timer): |
133 | b14b975f | Michael Hanselmann | break
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134 | b14b975f | Michael Hanselmann | |
135 | b11c9e5c | Michael Hanselmann | # Calculate timeout again if required
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136 | b11c9e5c | Michael Hanselmann | if timeout_needs_update:
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137 | b11c9e5c | Michael Hanselmann | timeout = self._CalcTimeout(time.time())
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138 | 53d47a06 | Guido Trotter | timeout_needs_update = False
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139 | b11c9e5c | Michael Hanselmann | |
140 | b14b975f | Michael Hanselmann | # Wait for I/O events
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141 | b14b975f | Michael Hanselmann | try:
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142 | b11c9e5c | Michael Hanselmann | io_events = poller.poll(timeout) |
143 | b14b975f | Michael Hanselmann | except select.error, err:
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144 | b14b975f | Michael Hanselmann | # EINTR can happen when signals are sent
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145 | b14b975f | Michael Hanselmann | if err.args and err.args[0] in (errno.EINTR,): |
146 | b14b975f | Michael Hanselmann | io_events = None
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147 | b14b975f | Michael Hanselmann | else:
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148 | b14b975f | Michael Hanselmann | raise
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149 | b14b975f | Michael Hanselmann | |
150 | b11c9e5c | Michael Hanselmann | after_poll = time.time() |
151 | b11c9e5c | Michael Hanselmann | |
152 | b14b975f | Michael Hanselmann | if io_events:
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153 | b14b975f | Michael Hanselmann | # Check for I/O events
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154 | b14b975f | Michael Hanselmann | for (evfd, evcond) in io_events: |
155 | b14b975f | Michael Hanselmann | owner = self._io_wait.get(evfd, None) |
156 | b14b975f | Michael Hanselmann | if owner:
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157 | b14b975f | Michael Hanselmann | owner.OnIO(evfd, evcond) |
158 | b14b975f | Michael Hanselmann | |
159 | b11c9e5c | Michael Hanselmann | if self._timer: |
160 | b11c9e5c | Michael Hanselmann | self._CheckTimers(after_poll)
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161 | b11c9e5c | Michael Hanselmann | |
162 | b14b975f | Michael Hanselmann | # Check whether signal was raised
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163 | b14b975f | Michael Hanselmann | if sigchld_handler and sigchld_handler.called: |
164 | b14b975f | Michael Hanselmann | self._CallSignalWaiters(signal.SIGCHLD)
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165 | b14b975f | Michael Hanselmann | sigchld_handler.Clear() |
166 | b14b975f | Michael Hanselmann | |
167 | b14b975f | Michael Hanselmann | if sigterm_handler and sigterm_handler.called: |
168 | b14b975f | Michael Hanselmann | self._CallSignalWaiters(signal.SIGTERM)
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169 | b14b975f | Michael Hanselmann | running = False
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170 | b14b975f | Michael Hanselmann | sigterm_handler.Clear() |
171 | b14b975f | Michael Hanselmann | finally:
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172 | b14b975f | Michael Hanselmann | # Restore signal handlers
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173 | b14b975f | Michael Hanselmann | if sigterm_handler:
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174 | b14b975f | Michael Hanselmann | sigterm_handler.Reset() |
175 | 821d9e43 | Michael Hanselmann | finally:
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176 | b14b975f | Michael Hanselmann | if sigchld_handler:
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177 | b14b975f | Michael Hanselmann | sigchld_handler.Reset() |
178 | a570e2a8 | Guido Trotter | |
179 | b11c9e5c | Michael Hanselmann | def _CalcTimeout(self, now): |
180 | b11c9e5c | Michael Hanselmann | if not self._timer: |
181 | b11c9e5c | Michael Hanselmann | return None |
182 | b11c9e5c | Michael Hanselmann | |
183 | b11c9e5c | Michael Hanselmann | timeout = None
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184 | b11c9e5c | Michael Hanselmann | |
185 | b11c9e5c | Michael Hanselmann | # TODO: Repeating timers
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186 | b11c9e5c | Michael Hanselmann | |
187 | b11c9e5c | Michael Hanselmann | min_timeout = 0.001
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188 | b11c9e5c | Michael Hanselmann | |
189 | b11c9e5c | Michael Hanselmann | for timer in self._timer.itervalues(): |
190 | b11c9e5c | Michael Hanselmann | time_left = (timer.start + timer.interval) - now |
191 | b11c9e5c | Michael Hanselmann | if timeout is None or time_left < timeout: |
192 | b11c9e5c | Michael Hanselmann | timeout = time_left |
193 | b11c9e5c | Michael Hanselmann | if timeout < 0: |
194 | b11c9e5c | Michael Hanselmann | timeout = 0
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195 | b11c9e5c | Michael Hanselmann | break
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196 | b11c9e5c | Michael Hanselmann | elif timeout < min_timeout:
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197 | b11c9e5c | Michael Hanselmann | timeout = min_timeout |
198 | b11c9e5c | Michael Hanselmann | break
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199 | b11c9e5c | Michael Hanselmann | |
200 | b11c9e5c | Michael Hanselmann | return timeout * 1000.0 |
201 | b11c9e5c | Michael Hanselmann | |
202 | b11c9e5c | Michael Hanselmann | def _CheckTimers(self, now): |
203 | b11c9e5c | Michael Hanselmann | # TODO: Repeating timers
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204 | b11c9e5c | Michael Hanselmann | for timer in self._timer.itervalues(): |
205 | b11c9e5c | Michael Hanselmann | if now < (timer.start + timer.interval):
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206 | b11c9e5c | Michael Hanselmann | continue
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207 | b11c9e5c | Michael Hanselmann | |
208 | b11c9e5c | Michael Hanselmann | timer.owner.OnTimer(timer.timer_id) |
209 | b11c9e5c | Michael Hanselmann | |
210 | b11c9e5c | Michael Hanselmann | # TODO: Repeating timers should not be removed
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211 | b11c9e5c | Michael Hanselmann | self._timer_remove.append(timer.timer_id)
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212 | b11c9e5c | Michael Hanselmann | |
213 | b14b975f | Michael Hanselmann | def _CallSignalWaiters(self, signum): |
214 | b14b975f | Michael Hanselmann | """Calls all signal waiters for a certain signal.
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215 | b14b975f | Michael Hanselmann |
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216 | b14b975f | Michael Hanselmann | @type signum: int
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217 | b14b975f | Michael Hanselmann | @param signum: Signal number
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218 | b14b975f | Michael Hanselmann |
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219 | b14b975f | Michael Hanselmann | """
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220 | b14b975f | Michael Hanselmann | for owner in self._signal_wait: |
221 | b14b975f | Michael Hanselmann | owner.OnSignal(signal.SIGCHLD) |
222 | 821d9e43 | Michael Hanselmann | |
223 | 821d9e43 | Michael Hanselmann | def RegisterIO(self, owner, fd, condition): |
224 | 821d9e43 | Michael Hanselmann | """Registers a receiver for I/O notifications
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225 | 821d9e43 | Michael Hanselmann |
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226 | 821d9e43 | Michael Hanselmann | The receiver must support a "OnIO(self, fd, conditions)" function.
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227 | 821d9e43 | Michael Hanselmann |
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228 | 821d9e43 | Michael Hanselmann | @type owner: instance
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229 | 821d9e43 | Michael Hanselmann | @param owner: Receiver
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230 | 821d9e43 | Michael Hanselmann | @type fd: int
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231 | 821d9e43 | Michael Hanselmann | @param fd: File descriptor
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232 | 821d9e43 | Michael Hanselmann | @type condition: int
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233 | 821d9e43 | Michael Hanselmann | @param condition: ORed field of conditions to be notified
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234 | 821d9e43 | Michael Hanselmann | (see select module)
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235 | 821d9e43 | Michael Hanselmann |
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236 | 821d9e43 | Michael Hanselmann | """
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237 | b14b975f | Michael Hanselmann | # select.Poller also supports file() like objects, but we don't.
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238 | b14b975f | Michael Hanselmann | assert isinstance(fd, (int, long)), \ |
239 | b14b975f | Michael Hanselmann | "Only integers are supported for file descriptors"
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240 | b14b975f | Michael Hanselmann | |
241 | b14b975f | Michael Hanselmann | self._io_wait_add.append((owner, fd, condition))
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242 | b14b975f | Michael Hanselmann | |
243 | b14b975f | Michael Hanselmann | def UnregisterIO(self, fd): |
244 | b14b975f | Michael Hanselmann | """Unregister a file descriptor.
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245 | b14b975f | Michael Hanselmann |
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246 | b14b975f | Michael Hanselmann | It'll be unregistered the next time the mainloop checks for it.
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247 | b14b975f | Michael Hanselmann |
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248 | b14b975f | Michael Hanselmann | @type fd: int
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249 | b14b975f | Michael Hanselmann | @param fd: File descriptor
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250 | b14b975f | Michael Hanselmann |
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251 | b14b975f | Michael Hanselmann | """
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252 | b14b975f | Michael Hanselmann | # select.Poller also supports file() like objects, but we don't.
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253 | b14b975f | Michael Hanselmann | assert isinstance(fd, (int, long)), \ |
254 | b14b975f | Michael Hanselmann | "Only integers are supported for file descriptors"
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255 | b14b975f | Michael Hanselmann | |
256 | b14b975f | Michael Hanselmann | self._io_wait_remove.append(fd)
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257 | 821d9e43 | Michael Hanselmann | |
258 | 821d9e43 | Michael Hanselmann | def RegisterSignal(self, owner): |
259 | 821d9e43 | Michael Hanselmann | """Registers a receiver for signal notifications
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260 | 821d9e43 | Michael Hanselmann |
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261 | 821d9e43 | Michael Hanselmann | The receiver must support a "OnSignal(self, signum)" function.
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262 | 821d9e43 | Michael Hanselmann |
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263 | 821d9e43 | Michael Hanselmann | @type owner: instance
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264 | 821d9e43 | Michael Hanselmann | @param owner: Receiver
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265 | 821d9e43 | Michael Hanselmann |
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266 | 821d9e43 | Michael Hanselmann | """
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267 | 821d9e43 | Michael Hanselmann | self._signal_wait.append(owner)
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268 | b11c9e5c | Michael Hanselmann | |
269 | b11c9e5c | Michael Hanselmann | def AddTimer(self, owner, interval, repeat): |
270 | b11c9e5c | Michael Hanselmann | """Add a new timer.
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271 | b11c9e5c | Michael Hanselmann |
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272 | b11c9e5c | Michael Hanselmann | The receiver must support a "OnTimer(self, timer_id)" function.
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273 | b11c9e5c | Michael Hanselmann |
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274 | b11c9e5c | Michael Hanselmann | @type owner: instance
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275 | b11c9e5c | Michael Hanselmann | @param owner: Receiver
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276 | b11c9e5c | Michael Hanselmann | @type interval: int or float
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277 | b11c9e5c | Michael Hanselmann | @param interval: Timer interval in seconds
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278 | b11c9e5c | Michael Hanselmann | @type repeat: bool
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279 | b11c9e5c | Michael Hanselmann | @param repeat: Whether this is a repeating timer or one-off
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280 | b11c9e5c | Michael Hanselmann |
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281 | b11c9e5c | Michael Hanselmann | """
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282 | b11c9e5c | Michael Hanselmann | # TODO: Implement repeating timers
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283 | b11c9e5c | Michael Hanselmann | assert not repeat, "Repeating timers are not yet supported" |
284 | b11c9e5c | Michael Hanselmann | |
285 | b11c9e5c | Michael Hanselmann | # Get new ID
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286 | b11c9e5c | Michael Hanselmann | self._timer_id_last += 1 |
287 | b11c9e5c | Michael Hanselmann | |
288 | b11c9e5c | Michael Hanselmann | timer_id = self._timer_id_last
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289 | b11c9e5c | Michael Hanselmann | |
290 | b11c9e5c | Michael Hanselmann | self._timer_add.append(Timer(owner, timer_id, time.time(),
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291 | b11c9e5c | Michael Hanselmann | float(interval), repeat))
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292 | b11c9e5c | Michael Hanselmann | |
293 | b11c9e5c | Michael Hanselmann | return timer_id
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294 | b11c9e5c | Michael Hanselmann | |
295 | b11c9e5c | Michael Hanselmann | def RemoveTimer(self, timer_id): |
296 | b11c9e5c | Michael Hanselmann | """Removes a timer.
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297 | b11c9e5c | Michael Hanselmann |
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298 | b11c9e5c | Michael Hanselmann | @type timer_id: int
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299 | b11c9e5c | Michael Hanselmann | @param timer_id: Timer ID
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300 | b11c9e5c | Michael Hanselmann |
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301 | b11c9e5c | Michael Hanselmann | """
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302 | b11c9e5c | Michael Hanselmann | self._timer_remove.append(timer_id)
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303 | 04ccf5e9 | Guido Trotter | |
304 | 04ccf5e9 | Guido Trotter | |
305 | 04ccf5e9 | Guido Trotter | def GenericMain(daemon_name, optionparser, dirs, check_fn, exec_fn): |
306 | 04ccf5e9 | Guido Trotter | """Shared main function for daemons.
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307 | 04ccf5e9 | Guido Trotter |
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308 | 04ccf5e9 | Guido Trotter | @type daemon_name: string
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309 | 04ccf5e9 | Guido Trotter | @param daemon_name: daemon name
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310 | 04ccf5e9 | Guido Trotter | @type optionparser: L{optparse.OptionParser}
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311 | 04ccf5e9 | Guido Trotter | @param optionparser: initialized optionparser with daemon-specific options
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312 | 04ccf5e9 | Guido Trotter | (common -f -d options will be handled by this module)
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313 | 04ccf5e9 | Guido Trotter | @type options: object @param options: OptionParser result, should contain at
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314 | 04ccf5e9 | Guido Trotter | least the fork and the debug options
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315 | 04ccf5e9 | Guido Trotter | @type dirs: list of strings
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316 | 04ccf5e9 | Guido Trotter | @param dirs: list of directories that must exist for this daemon to work
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317 | 04ccf5e9 | Guido Trotter | @type check_fn: function which accepts (options, args)
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318 | 04ccf5e9 | Guido Trotter | @param check_fn: function that checks start conditions and exits if they're
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319 | 04ccf5e9 | Guido Trotter | not met
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320 | 04ccf5e9 | Guido Trotter | @type exec_fn: function which accepts (options, args)
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321 | 04ccf5e9 | Guido Trotter | @param exec_fn: function that's executed with the daemon's pid file held, and
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322 | 04ccf5e9 | Guido Trotter | runs the daemon itself.
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323 | 04ccf5e9 | Guido Trotter |
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324 | 04ccf5e9 | Guido Trotter | """
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325 | 04ccf5e9 | Guido Trotter | optionparser.add_option("-f", "--foreground", dest="fork", |
326 | 04ccf5e9 | Guido Trotter | help="Don't detach from the current terminal",
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327 | 04ccf5e9 | Guido Trotter | default=True, action="store_false") |
328 | 04ccf5e9 | Guido Trotter | optionparser.add_option("-d", "--debug", dest="debug", |
329 | 04ccf5e9 | Guido Trotter | help="Enable some debug messages",
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330 | 04ccf5e9 | Guido Trotter | default=False, action="store_true") |
331 | 04ccf5e9 | Guido Trotter | if daemon_name in constants.DAEMONS_PORTS: |
332 | 04ccf5e9 | Guido Trotter | # for networked daemons we also allow choosing the bind port and address.
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333 | 04ccf5e9 | Guido Trotter | # by default we use the port provided by utils.GetDaemonPort, and bind to
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334 | 04ccf5e9 | Guido Trotter | # 0.0.0.0 (which is represented by and empty bind address.
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335 | 04ccf5e9 | Guido Trotter | port = utils.GetDaemonPort(daemon_name) |
336 | 04ccf5e9 | Guido Trotter | optionparser.add_option("-p", "--port", dest="port", |
337 | 04ccf5e9 | Guido Trotter | help="Network port (%s default)." % port,
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338 | 04ccf5e9 | Guido Trotter | default=port, type="int")
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339 | 04ccf5e9 | Guido Trotter | optionparser.add_option("-b", "--bind", dest="bind_address", |
340 | 04ccf5e9 | Guido Trotter | help="Bind address",
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341 | 04ccf5e9 | Guido Trotter | default="", metavar="ADDRESS") |
342 | 04ccf5e9 | Guido Trotter | |
343 | 3b1b0cb6 | Guido Trotter | if daemon_name in constants.DAEMONS_SSL: |
344 | 3b1b0cb6 | Guido Trotter | default_cert, default_key = constants.DAEMONS_SSL[daemon_name] |
345 | 3b1b0cb6 | Guido Trotter | optionparser.add_option("--no-ssl", dest="ssl", |
346 | 3b1b0cb6 | Guido Trotter | help="Do not secure HTTP protocol with SSL",
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347 | 3b1b0cb6 | Guido Trotter | default=True, action="store_false") |
348 | 3b1b0cb6 | Guido Trotter | optionparser.add_option("-K", "--ssl-key", dest="ssl_key", |
349 | 3b1b0cb6 | Guido Trotter | help="SSL key",
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350 | 3b1b0cb6 | Guido Trotter | default=default_key, type="string")
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351 | 3b1b0cb6 | Guido Trotter | optionparser.add_option("-C", "--ssl-cert", dest="ssl_cert", |
352 | 3b1b0cb6 | Guido Trotter | help="SSL certificate",
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353 | 3b1b0cb6 | Guido Trotter | default=default_cert, type="string")
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354 | 3b1b0cb6 | Guido Trotter | |
355 | 04ccf5e9 | Guido Trotter | multithread = utils.no_fork = daemon_name in constants.MULTITHREADED_DAEMONS
|
356 | 04ccf5e9 | Guido Trotter | |
357 | 04ccf5e9 | Guido Trotter | options, args = optionparser.parse_args() |
358 | 04ccf5e9 | Guido Trotter | |
359 | 3b1b0cb6 | Guido Trotter | if hasattr(options, 'ssl') and options.ssl: |
360 | 3b1b0cb6 | Guido Trotter | if not (options.ssl_cert and options.ssl_key): |
361 | 3b1b0cb6 | Guido Trotter | print >> sys.stderr, "Need key and certificate to use ssl" |
362 | 3b1b0cb6 | Guido Trotter | sys.exit(constants.EXIT_FAILURE) |
363 | 3b1b0cb6 | Guido Trotter | for fname in (options.ssl_cert, options.ssl_key): |
364 | 3b1b0cb6 | Guido Trotter | if not os.path.isfile(fname): |
365 | 3b1b0cb6 | Guido Trotter | print >> sys.stderr, "Need ssl file %s to run" % fname |
366 | 3b1b0cb6 | Guido Trotter | sys.exit(constants.EXIT_FAILURE) |
367 | 3b1b0cb6 | Guido Trotter | |
368 | 3b1b0cb6 | Guido Trotter | if check_fn is not None: |
369 | 3b1b0cb6 | Guido Trotter | check_fn(options, args) |
370 | 3b1b0cb6 | Guido Trotter | |
371 | 04ccf5e9 | Guido Trotter | utils.EnsureDirs(dirs) |
372 | 04ccf5e9 | Guido Trotter | |
373 | 04ccf5e9 | Guido Trotter | if options.fork:
|
374 | 04ccf5e9 | Guido Trotter | utils.CloseFDs() |
375 | 04ccf5e9 | Guido Trotter | utils.Daemonize(logfile=constants.DAEMONS_LOGFILES[daemon_name]) |
376 | 04ccf5e9 | Guido Trotter | |
377 | 04ccf5e9 | Guido Trotter | utils.WritePidFile(daemon_name) |
378 | 04ccf5e9 | Guido Trotter | try:
|
379 | 04ccf5e9 | Guido Trotter | utils.SetupLogging(logfile=constants.DAEMONS_LOGFILES[daemon_name], |
380 | 04ccf5e9 | Guido Trotter | debug=options.debug, |
381 | 04ccf5e9 | Guido Trotter | stderr_logging=not options.fork,
|
382 | 04ccf5e9 | Guido Trotter | multithreaded=multithread) |
383 | 04ccf5e9 | Guido Trotter | logging.info("%s daemon startup" % daemon_name)
|
384 | 04ccf5e9 | Guido Trotter | exec_fn(options, args) |
385 | 04ccf5e9 | Guido Trotter | finally:
|
386 | 04ccf5e9 | Guido Trotter | utils.RemovePidFile(daemon_name) |