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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 | 112d240d | Guido Trotter | import asyncore |
26 | 3b1b0cb6 | Guido Trotter | import os |
27 | 821d9e43 | Michael Hanselmann | import signal |
28 | 04ccf5e9 | Guido Trotter | import logging |
29 | a02b89cf | Guido Trotter | import sched |
30 | a02b89cf | Guido Trotter | import time |
31 | 5f3269fc | Guido Trotter | import socket |
32 | 6ddf5c8f | Guido Trotter | import select |
33 | c124045f | Iustin Pop | import sys |
34 | 821d9e43 | Michael Hanselmann | |
35 | 821d9e43 | Michael Hanselmann | from ganeti import utils |
36 | 04ccf5e9 | Guido Trotter | from ganeti import constants |
37 | a02b89cf | Guido Trotter | from ganeti import errors |
38 | a02b89cf | Guido Trotter | |
39 | a02b89cf | Guido Trotter | |
40 | a02b89cf | Guido Trotter | class SchedulerBreakout(Exception): |
41 | a02b89cf | Guido Trotter | """Exception used to get out of the scheduler loop
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42 | a02b89cf | Guido Trotter |
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43 | a02b89cf | Guido Trotter | """
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44 | a02b89cf | Guido Trotter | |
45 | a02b89cf | Guido Trotter | |
46 | a02b89cf | Guido Trotter | def AsyncoreDelayFunction(timeout): |
47 | a02b89cf | Guido Trotter | """Asyncore-compatible scheduler delay function.
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48 | a02b89cf | Guido Trotter |
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49 | a02b89cf | Guido Trotter | This is a delay function for sched that, rather than actually sleeping,
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50 | a02b89cf | Guido Trotter | executes asyncore events happening in the meantime.
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51 | a02b89cf | Guido Trotter |
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52 | a02b89cf | Guido Trotter | After an event has occurred, rather than returning, it raises a
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53 | a02b89cf | Guido Trotter | SchedulerBreakout exception, which will force the current scheduler.run()
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54 | a02b89cf | Guido Trotter | invocation to terminate, so that we can also check for signals. The main loop
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55 | a02b89cf | Guido Trotter | will then call the scheduler run again, which will allow it to actually
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56 | a02b89cf | Guido Trotter | process any due events.
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57 | a02b89cf | Guido Trotter |
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58 | a02b89cf | Guido Trotter | This is needed because scheduler.run() doesn't support a count=..., as
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59 | a02b89cf | Guido Trotter | asyncore loop, and the scheduler module documents throwing exceptions from
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60 | a02b89cf | Guido Trotter | inside the delay function as an allowed usage model.
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61 | a02b89cf | Guido Trotter |
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62 | a02b89cf | Guido Trotter | """
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63 | a02b89cf | Guido Trotter | asyncore.loop(timeout=timeout, count=1, use_poll=True) |
64 | a02b89cf | Guido Trotter | raise SchedulerBreakout()
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65 | a02b89cf | Guido Trotter | |
66 | a02b89cf | Guido Trotter | |
67 | a02b89cf | Guido Trotter | class AsyncoreScheduler(sched.scheduler): |
68 | a02b89cf | Guido Trotter | """Event scheduler integrated with asyncore
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69 | a02b89cf | Guido Trotter |
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70 | a02b89cf | Guido Trotter | """
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71 | a02b89cf | Guido Trotter | def __init__(self, timefunc): |
72 | a02b89cf | Guido Trotter | sched.scheduler.__init__(self, timefunc, AsyncoreDelayFunction)
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73 | 821d9e43 | Michael Hanselmann | |
74 | 821d9e43 | Michael Hanselmann | |
75 | b11780bb | Guido Trotter | class GanetiBaseAsyncoreDispatcher(asyncore.dispatcher): |
76 | b11780bb | Guido Trotter | """Base Ganeti Asyncore Dispacher
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77 | b11780bb | Guido Trotter |
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78 | b11780bb | Guido Trotter | """
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79 | b11780bb | Guido Trotter | # this method is overriding an asyncore.dispatcher method
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80 | b11780bb | Guido Trotter | def handle_error(self): |
81 | b11780bb | Guido Trotter | """Log an error in handling any request, and proceed.
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82 | b11780bb | Guido Trotter |
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83 | b11780bb | Guido Trotter | """
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84 | b11780bb | Guido Trotter | logging.exception("Error while handling asyncore request")
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85 | b11780bb | Guido Trotter | |
86 | b11780bb | Guido Trotter | # this method is overriding an asyncore.dispatcher method
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87 | b11780bb | Guido Trotter | def writable(self): |
88 | b11780bb | Guido Trotter | """Most of the time we don't want to check for writability.
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89 | b11780bb | Guido Trotter |
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90 | b11780bb | Guido Trotter | """
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91 | b11780bb | Guido Trotter | return False |
92 | b11780bb | Guido Trotter | |
93 | b11780bb | Guido Trotter | |
94 | b11780bb | Guido Trotter | class AsyncUDPSocket(GanetiBaseAsyncoreDispatcher): |
95 | 5f3269fc | Guido Trotter | """An improved asyncore udp socket.
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96 | 5f3269fc | Guido Trotter |
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97 | 5f3269fc | Guido Trotter | """
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98 | 5f3269fc | Guido Trotter | def __init__(self): |
99 | 5f3269fc | Guido Trotter | """Constructor for AsyncUDPSocket
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100 | 5f3269fc | Guido Trotter |
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101 | 5f3269fc | Guido Trotter | """
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102 | b11780bb | Guido Trotter | GanetiBaseAsyncoreDispatcher.__init__(self)
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103 | 5f3269fc | Guido Trotter | self._out_queue = []
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104 | 5f3269fc | Guido Trotter | self.create_socket(socket.AF_INET, socket.SOCK_DGRAM)
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105 | 5f3269fc | Guido Trotter | |
106 | 5f3269fc | Guido Trotter | # this method is overriding an asyncore.dispatcher method
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107 | 5f3269fc | Guido Trotter | def handle_connect(self): |
108 | 5f3269fc | Guido Trotter | # Python thinks that the first udp message from a source qualifies as a
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109 | 5f3269fc | Guido Trotter | # "connect" and further ones are part of the same connection. We beg to
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110 | 5f3269fc | Guido Trotter | # differ and treat all messages equally.
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111 | 5f3269fc | Guido Trotter | pass
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112 | 5f3269fc | Guido Trotter | |
113 | 5f3269fc | Guido Trotter | # this method is overriding an asyncore.dispatcher method
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114 | 5f3269fc | Guido Trotter | def handle_read(self): |
115 | 232144d0 | Guido Trotter | payload, address = utils.IgnoreSignals(self.recvfrom,
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116 | 232144d0 | Guido Trotter | constants.MAX_UDP_DATA_SIZE) |
117 | 8216580d | Guido Trotter | ip, port = address |
118 | 8216580d | Guido Trotter | self.handle_datagram(payload, ip, port)
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119 | 5f3269fc | Guido Trotter | |
120 | 5f3269fc | Guido Trotter | def handle_datagram(self, payload, ip, port): |
121 | 5f3269fc | Guido Trotter | """Handle an already read udp datagram
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122 | 5f3269fc | Guido Trotter |
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123 | 5f3269fc | Guido Trotter | """
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124 | 5f3269fc | Guido Trotter | raise NotImplementedError |
125 | 5f3269fc | Guido Trotter | |
126 | 5f3269fc | Guido Trotter | # this method is overriding an asyncore.dispatcher method
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127 | 5f3269fc | Guido Trotter | def writable(self): |
128 | 5f3269fc | Guido Trotter | # We should check whether we can write to the socket only if we have
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129 | 5f3269fc | Guido Trotter | # something scheduled to be written
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130 | 5f3269fc | Guido Trotter | return bool(self._out_queue) |
131 | 5f3269fc | Guido Trotter | |
132 | 48bf6352 | Guido Trotter | # this method is overriding an asyncore.dispatcher method
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133 | 5f3269fc | Guido Trotter | def handle_write(self): |
134 | 3660fcf5 | Guido Trotter | if not self._out_queue: |
135 | 3660fcf5 | Guido Trotter | logging.error("handle_write called with empty output queue")
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136 | 3660fcf5 | Guido Trotter | return
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137 | 3660fcf5 | Guido Trotter | (ip, port, payload) = self._out_queue[0] |
138 | 232144d0 | Guido Trotter | utils.IgnoreSignals(self.sendto, payload, 0, (ip, port)) |
139 | 3660fcf5 | Guido Trotter | self._out_queue.pop(0) |
140 | 3660fcf5 | Guido Trotter | |
141 | 5f3269fc | Guido Trotter | def enqueue_send(self, ip, port, payload): |
142 | 5f3269fc | Guido Trotter | """Enqueue a datagram to be sent when possible
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143 | 5f3269fc | Guido Trotter |
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144 | 5f3269fc | Guido Trotter | """
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145 | c8eded0b | Guido Trotter | if len(payload) > constants.MAX_UDP_DATA_SIZE: |
146 | c8eded0b | Guido Trotter | raise errors.UdpDataSizeError('Packet too big: %s > %s' % (len(payload), |
147 | c8eded0b | Guido Trotter | constants.MAX_UDP_DATA_SIZE)) |
148 | 5f3269fc | Guido Trotter | self._out_queue.append((ip, port, payload))
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149 | 5f3269fc | Guido Trotter | |
150 | 6ddf5c8f | Guido Trotter | def process_next_packet(self, timeout=0): |
151 | 6ddf5c8f | Guido Trotter | """Process the next datagram, waiting for it if necessary.
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152 | 6ddf5c8f | Guido Trotter |
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153 | 6ddf5c8f | Guido Trotter | @type timeout: float
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154 | 6ddf5c8f | Guido Trotter | @param timeout: how long to wait for data
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155 | 6ddf5c8f | Guido Trotter | @rtype: boolean
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156 | 6ddf5c8f | Guido Trotter | @return: True if some data has been handled, False otherwise
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157 | 6ddf5c8f | Guido Trotter |
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158 | 6ddf5c8f | Guido Trotter | """
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159 | 1b429e2a | Iustin Pop | result = utils.WaitForFdCondition(self, select.POLLIN, timeout)
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160 | 1b429e2a | Iustin Pop | if result is not None and result & select.POLLIN: |
161 | 3660fcf5 | Guido Trotter | self.handle_read()
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162 | 6ddf5c8f | Guido Trotter | return True |
163 | 6ddf5c8f | Guido Trotter | else:
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164 | 6ddf5c8f | Guido Trotter | return False |
165 | 6ddf5c8f | Guido Trotter | |
166 | 5f3269fc | Guido Trotter | |
167 | 821d9e43 | Michael Hanselmann | class Mainloop(object): |
168 | 821d9e43 | Michael Hanselmann | """Generic mainloop for daemons
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169 | 821d9e43 | Michael Hanselmann |
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170 | 69b99987 | Michael Hanselmann | @ivar scheduler: A sched.scheduler object, which can be used to register
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171 | 69b99987 | Michael Hanselmann | timed events
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172 | 69b99987 | Michael Hanselmann |
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173 | 821d9e43 | Michael Hanselmann | """
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174 | 821d9e43 | Michael Hanselmann | def __init__(self): |
175 | b14b975f | Michael Hanselmann | """Constructs a new Mainloop instance.
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176 | b14b975f | Michael Hanselmann |
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177 | b14b975f | Michael Hanselmann | """
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178 | 821d9e43 | Michael Hanselmann | self._signal_wait = []
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179 | a02b89cf | Guido Trotter | self.scheduler = AsyncoreScheduler(time.time)
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180 | 821d9e43 | Michael Hanselmann | |
181 | 9b739173 | Guido Trotter | @utils.SignalHandled([signal.SIGCHLD])
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182 | 9b739173 | Guido Trotter | @utils.SignalHandled([signal.SIGTERM])
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183 | f59dce3e | Guido Trotter | @utils.SignalHandled([signal.SIGINT])
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184 | 69b99987 | Michael Hanselmann | def Run(self, signal_handlers=None): |
185 | b14b975f | Michael Hanselmann | """Runs the mainloop.
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186 | b14b975f | Michael Hanselmann |
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187 | 9b739173 | Guido Trotter | @type signal_handlers: dict
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188 | 9b739173 | Guido Trotter | @param signal_handlers: signal->L{utils.SignalHandler} passed by decorator
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189 | b14b975f | Michael Hanselmann |
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190 | b14b975f | Michael Hanselmann | """
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191 | 9b739173 | Guido Trotter | assert isinstance(signal_handlers, dict) and \ |
192 | 9b739173 | Guido Trotter | len(signal_handlers) > 0, \ |
193 | 9b739173 | Guido Trotter | "Broken SignalHandled decorator"
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194 | 9b739173 | Guido Trotter | running = True
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195 | 9b739173 | Guido Trotter | # Start actual main loop
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196 | 9b739173 | Guido Trotter | while running:
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197 | a02b89cf | Guido Trotter | if not self.scheduler.empty(): |
198 | a02b89cf | Guido Trotter | try:
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199 | a02b89cf | Guido Trotter | self.scheduler.run()
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200 | a02b89cf | Guido Trotter | except SchedulerBreakout:
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201 | a02b89cf | Guido Trotter | pass
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202 | a02b89cf | Guido Trotter | else:
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203 | a02b89cf | Guido Trotter | asyncore.loop(count=1, use_poll=True) |
204 | 9b739173 | Guido Trotter | |
205 | 9b739173 | Guido Trotter | # Check whether a signal was raised
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206 | 9b739173 | Guido Trotter | for sig in signal_handlers: |
207 | 9b739173 | Guido Trotter | handler = signal_handlers[sig] |
208 | 9b739173 | Guido Trotter | if handler.called:
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209 | 9b739173 | Guido Trotter | self._CallSignalWaiters(sig)
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210 | f59dce3e | Guido Trotter | running = sig not in (signal.SIGTERM, signal.SIGINT) |
211 | 9b739173 | Guido Trotter | handler.Clear() |
212 | a570e2a8 | Guido Trotter | |
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 | a9fe7232 | Guido Trotter | owner.OnSignal(signum) |
222 | 821d9e43 | Michael Hanselmann | |
223 | 821d9e43 | Michael Hanselmann | def RegisterSignal(self, owner): |
224 | 821d9e43 | Michael Hanselmann | """Registers a receiver for signal notifications
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225 | 821d9e43 | Michael Hanselmann |
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226 | 821d9e43 | Michael Hanselmann | The receiver must support a "OnSignal(self, signum)" 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 |
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231 | 821d9e43 | Michael Hanselmann | """
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232 | 821d9e43 | Michael Hanselmann | self._signal_wait.append(owner)
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233 | b11c9e5c | Michael Hanselmann | |
234 | 04ccf5e9 | Guido Trotter | |
235 | 30dabd03 | Michael Hanselmann | def GenericMain(daemon_name, optionparser, dirs, check_fn, exec_fn, |
236 | 1c54156d | Luca Bigliardi | multithreaded=False, console_logging=False, |
237 | 0648750e | Michael Hanselmann | default_ssl_cert=None, default_ssl_key=None): |
238 | 04ccf5e9 | Guido Trotter | """Shared main function for daemons.
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239 | 04ccf5e9 | Guido Trotter |
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240 | 04ccf5e9 | Guido Trotter | @type daemon_name: string
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241 | 04ccf5e9 | Guido Trotter | @param daemon_name: daemon name
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242 | 69b99987 | Michael Hanselmann | @type optionparser: optparse.OptionParser
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243 | 04ccf5e9 | Guido Trotter | @param optionparser: initialized optionparser with daemon-specific options
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244 | 04ccf5e9 | Guido Trotter | (common -f -d options will be handled by this module)
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245 | 5a062513 | Guido Trotter | @type dirs: list of (string, integer)
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246 | 5a062513 | Guido Trotter | @param dirs: list of directories that must be created if they don't exist,
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247 | 5a062513 | Guido Trotter | and the permissions to be used to create them
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248 | 04ccf5e9 | Guido Trotter | @type check_fn: function which accepts (options, args)
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249 | 04ccf5e9 | Guido Trotter | @param check_fn: function that checks start conditions and exits if they're
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250 | 04ccf5e9 | Guido Trotter | not met
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251 | 04ccf5e9 | Guido Trotter | @type exec_fn: function which accepts (options, args)
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252 | 04ccf5e9 | Guido Trotter | @param exec_fn: function that's executed with the daemon's pid file held, and
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253 | 04ccf5e9 | Guido Trotter | runs the daemon itself.
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254 | 30dabd03 | Michael Hanselmann | @type multithreaded: bool
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255 | 30dabd03 | Michael Hanselmann | @param multithreaded: Whether the daemon uses threads
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256 | ff917534 | Luca Bigliardi | @type console_logging: boolean
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257 | ff917534 | Luca Bigliardi | @param console_logging: if True, the daemon will fall back to the system
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258 | ff917534 | Luca Bigliardi | console if logging fails
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259 | 0648750e | Michael Hanselmann | @type default_ssl_cert: string
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260 | 0648750e | Michael Hanselmann | @param default_ssl_cert: Default SSL certificate path
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261 | 0648750e | Michael Hanselmann | @type default_ssl_key: string
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262 | 0648750e | Michael Hanselmann | @param default_ssl_key: Default SSL key path
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263 | 04ccf5e9 | Guido Trotter |
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264 | 04ccf5e9 | Guido Trotter | """
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265 | 04ccf5e9 | Guido Trotter | optionparser.add_option("-f", "--foreground", dest="fork", |
266 | 04ccf5e9 | Guido Trotter | help="Don't detach from the current terminal",
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267 | 04ccf5e9 | Guido Trotter | default=True, action="store_false") |
268 | 04ccf5e9 | Guido Trotter | optionparser.add_option("-d", "--debug", dest="debug", |
269 | 04ccf5e9 | Guido Trotter | help="Enable some debug messages",
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270 | 04ccf5e9 | Guido Trotter | default=False, action="store_true") |
271 | 551b6283 | Iustin Pop | optionparser.add_option("--syslog", dest="syslog", |
272 | 551b6283 | Iustin Pop | help="Enable logging to syslog (except debug"
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273 | 551b6283 | Iustin Pop | " messages); one of 'no', 'yes' or 'only' [%s]" %
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274 | 551b6283 | Iustin Pop | constants.SYSLOG_USAGE, |
275 | 551b6283 | Iustin Pop | default=constants.SYSLOG_USAGE, |
276 | 551b6283 | Iustin Pop | choices=["no", "yes", "only"]) |
277 | 0a71aa17 | Michael Hanselmann | |
278 | 04ccf5e9 | Guido Trotter | if daemon_name in constants.DAEMONS_PORTS: |
279 | 0a71aa17 | Michael Hanselmann | default_bind_address = "0.0.0.0"
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280 | 0a71aa17 | Michael Hanselmann | default_port = utils.GetDaemonPort(daemon_name) |
281 | 0a71aa17 | Michael Hanselmann | |
282 | 0a71aa17 | Michael Hanselmann | # For networked daemons we allow choosing the port and bind address
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283 | 04ccf5e9 | Guido Trotter | optionparser.add_option("-p", "--port", dest="port", |
284 | 0a71aa17 | Michael Hanselmann | help="Network port (default: %s)" % default_port,
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285 | 0a71aa17 | Michael Hanselmann | default=default_port, type="int")
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286 | 04ccf5e9 | Guido Trotter | optionparser.add_option("-b", "--bind", dest="bind_address", |
287 | 0a71aa17 | Michael Hanselmann | help=("Bind address (default: %s)" %
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288 | 0a71aa17 | Michael Hanselmann | default_bind_address), |
289 | 0a71aa17 | Michael Hanselmann | default=default_bind_address, metavar="ADDRESS")
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290 | 04ccf5e9 | Guido Trotter | |
291 | 0648750e | Michael Hanselmann | if default_ssl_key is not None and default_ssl_cert is not None: |
292 | 3b1b0cb6 | Guido Trotter | optionparser.add_option("--no-ssl", dest="ssl", |
293 | 3b1b0cb6 | Guido Trotter | help="Do not secure HTTP protocol with SSL",
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294 | 3b1b0cb6 | Guido Trotter | default=True, action="store_false") |
295 | 3b1b0cb6 | Guido Trotter | optionparser.add_option("-K", "--ssl-key", dest="ssl_key", |
296 | 0648750e | Michael Hanselmann | help=("SSL key path (default: %s)" %
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297 | 0648750e | Michael Hanselmann | default_ssl_key), |
298 | 0648750e | Michael Hanselmann | default=default_ssl_key, type="string",
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299 | 0648750e | Michael Hanselmann | metavar="SSL_KEY_PATH")
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300 | 3b1b0cb6 | Guido Trotter | optionparser.add_option("-C", "--ssl-cert", dest="ssl_cert", |
301 | 0648750e | Michael Hanselmann | help=("SSL certificate path (default: %s)" %
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302 | 0648750e | Michael Hanselmann | default_ssl_cert), |
303 | 0648750e | Michael Hanselmann | default=default_ssl_cert, type="string",
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304 | 0648750e | Michael Hanselmann | metavar="SSL_CERT_PATH")
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305 | 3b1b0cb6 | Guido Trotter | |
306 | 30dabd03 | Michael Hanselmann | # Disable the use of fork(2) if the daemon uses threads
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307 | 30dabd03 | Michael Hanselmann | utils.no_fork = multithreaded |
308 | 04ccf5e9 | Guido Trotter | |
309 | 04ccf5e9 | Guido Trotter | options, args = optionparser.parse_args() |
310 | 04ccf5e9 | Guido Trotter | |
311 | 0648750e | Michael Hanselmann | if getattr(options, "ssl", False): |
312 | 0648750e | Michael Hanselmann | ssl_paths = { |
313 | 0648750e | Michael Hanselmann | "certificate": options.ssl_cert,
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314 | 0648750e | Michael Hanselmann | "key": options.ssl_key,
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315 | 0648750e | Michael Hanselmann | } |
316 | 0648750e | Michael Hanselmann | |
317 | 0648750e | Michael Hanselmann | for name, path in ssl_paths.iteritems(): |
318 | 0648750e | Michael Hanselmann | if not os.path.isfile(path): |
319 | 0648750e | Michael Hanselmann | print >> sys.stderr, "SSL %s file '%s' was not found" % (name, path) |
320 | 3b1b0cb6 | Guido Trotter | sys.exit(constants.EXIT_FAILURE) |
321 | 3b1b0cb6 | Guido Trotter | |
322 | 0648750e | Michael Hanselmann | # TODO: By initiating http.HttpSslParams here we would only read the files
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323 | 0648750e | Michael Hanselmann | # once and have a proper validation (isfile returns False on directories)
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324 | 0648750e | Michael Hanselmann | # at the same time.
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325 | 0648750e | Michael Hanselmann | |
326 | 3b1b0cb6 | Guido Trotter | if check_fn is not None: |
327 | 3b1b0cb6 | Guido Trotter | check_fn(options, args) |
328 | 3b1b0cb6 | Guido Trotter | |
329 | 04ccf5e9 | Guido Trotter | utils.EnsureDirs(dirs) |
330 | 04ccf5e9 | Guido Trotter | |
331 | 04ccf5e9 | Guido Trotter | if options.fork:
|
332 | 04ccf5e9 | Guido Trotter | utils.CloseFDs() |
333 | 04ccf5e9 | Guido Trotter | utils.Daemonize(logfile=constants.DAEMONS_LOGFILES[daemon_name]) |
334 | 04ccf5e9 | Guido Trotter | |
335 | 04ccf5e9 | Guido Trotter | utils.WritePidFile(daemon_name) |
336 | 04ccf5e9 | Guido Trotter | try:
|
337 | 04ccf5e9 | Guido Trotter | utils.SetupLogging(logfile=constants.DAEMONS_LOGFILES[daemon_name], |
338 | 04ccf5e9 | Guido Trotter | debug=options.debug, |
339 | 04ccf5e9 | Guido Trotter | stderr_logging=not options.fork,
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340 | e7307f08 | Michael Hanselmann | multithreaded=multithreaded, |
341 | 551b6283 | Iustin Pop | program=daemon_name, |
342 | ff917534 | Luca Bigliardi | syslog=options.syslog, |
343 | ff917534 | Luca Bigliardi | console_logging=console_logging) |
344 | 099c52ad | Iustin Pop | logging.info("%s daemon startup", daemon_name)
|
345 | 04ccf5e9 | Guido Trotter | exec_fn(options, args) |
346 | 04ccf5e9 | Guido Trotter | finally:
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347 | 04ccf5e9 | Guido Trotter | utils.RemovePidFile(daemon_name) |