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@@ -1,1091 +1,1095 b'' | |||
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1 | 1 | #!/usr/bin/env python |
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2 | 2 | """The IPython Controller Hub with 0MQ |
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3 | 3 | This is the master object that handles connections from engines and clients, |
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4 | 4 | and monitors traffic through the various queues. |
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5 | 5 | """ |
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6 | 6 | #----------------------------------------------------------------------------- |
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7 | 7 | # Copyright (C) 2010 The IPython Development Team |
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8 | 8 | # |
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9 | 9 | # Distributed under the terms of the BSD License. The full license is in |
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10 | 10 | # the file COPYING, distributed as part of this software. |
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11 | 11 | #----------------------------------------------------------------------------- |
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12 | 12 | |
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13 | 13 | #----------------------------------------------------------------------------- |
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14 | 14 | # Imports |
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15 | 15 | #----------------------------------------------------------------------------- |
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16 | 16 | from __future__ import print_function |
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17 | 17 | |
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18 | 18 | import sys |
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19 | 19 | import time |
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20 | 20 | from datetime import datetime |
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21 | 21 | |
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22 | 22 | import zmq |
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23 | 23 | from zmq.eventloop import ioloop |
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24 | 24 | from zmq.eventloop.zmqstream import ZMQStream |
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25 | 25 | |
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26 | 26 | # internal: |
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27 | 27 | from IPython.utils.importstring import import_item |
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28 | 28 | from IPython.utils.traitlets import HasTraits, Instance, Int, CStr, Str, Dict, Set, List, Bool |
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29 | 29 | |
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30 | 30 | from IPython.parallel import error |
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31 | 31 | from IPython.parallel.factory import RegistrationFactory, LoggingFactory |
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32 | 32 | from IPython.parallel.util import select_random_ports, validate_url_container, ISO8601 |
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33 | 33 | |
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34 | 34 | from .heartmonitor import HeartMonitor |
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35 | 35 | |
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36 | 36 | #----------------------------------------------------------------------------- |
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37 | 37 | # Code |
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38 | 38 | #----------------------------------------------------------------------------- |
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39 | 39 | |
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40 | 40 | def _passer(*args, **kwargs): |
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41 | 41 | return |
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42 | 42 | |
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43 | 43 | def _printer(*args, **kwargs): |
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44 | 44 | print (args) |
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45 | 45 | print (kwargs) |
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46 | 46 | |
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47 | 47 | def empty_record(): |
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48 | 48 | """Return an empty dict with all record keys.""" |
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49 | 49 | return { |
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50 | 50 | 'msg_id' : None, |
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51 | 51 | 'header' : None, |
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52 | 52 | 'content': None, |
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53 | 53 | 'buffers': None, |
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54 | 54 | 'submitted': None, |
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55 | 55 | 'client_uuid' : None, |
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56 | 56 | 'engine_uuid' : None, |
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57 | 57 | 'started': None, |
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58 | 58 | 'completed': None, |
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59 | 59 | 'resubmitted': None, |
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60 | 60 | 'result_header' : None, |
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61 | 61 | 'result_content' : None, |
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62 | 62 | 'result_buffers' : None, |
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63 | 63 | 'queue' : None, |
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64 | 64 | 'pyin' : None, |
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65 | 65 | 'pyout': None, |
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66 | 66 | 'pyerr': None, |
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67 | 67 | 'stdout': '', |
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68 | 68 | 'stderr': '', |
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69 | 69 | } |
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70 | 70 | |
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71 | 71 | def init_record(msg): |
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72 | 72 | """Initialize a TaskRecord based on a request.""" |
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73 | 73 | header = msg['header'] |
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74 | 74 | return { |
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75 | 75 | 'msg_id' : header['msg_id'], |
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76 | 76 | 'header' : header, |
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77 | 77 | 'content': msg['content'], |
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78 | 78 | 'buffers': msg['buffers'], |
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79 | 79 | 'submitted': datetime.strptime(header['date'], ISO8601), |
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80 | 80 | 'client_uuid' : None, |
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81 | 81 | 'engine_uuid' : None, |
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82 | 82 | 'started': None, |
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83 | 83 | 'completed': None, |
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84 | 84 | 'resubmitted': None, |
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85 | 85 | 'result_header' : None, |
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86 | 86 | 'result_content' : None, |
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87 | 87 | 'result_buffers' : None, |
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88 | 88 | 'queue' : None, |
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89 | 89 | 'pyin' : None, |
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90 | 90 | 'pyout': None, |
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91 | 91 | 'pyerr': None, |
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92 | 92 | 'stdout': '', |
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93 | 93 | 'stderr': '', |
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94 | 94 | } |
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95 | 95 | |
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96 | 96 | |
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97 | 97 | class EngineConnector(HasTraits): |
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98 | 98 | """A simple object for accessing the various zmq connections of an object. |
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99 | 99 | Attributes are: |
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100 | 100 | id (int): engine ID |
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101 | 101 | uuid (str): uuid (unused?) |
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102 | 102 | queue (str): identity of queue's XREQ socket |
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103 | 103 | registration (str): identity of registration XREQ socket |
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104 | 104 | heartbeat (str): identity of heartbeat XREQ socket |
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105 | 105 | """ |
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106 | 106 | id=Int(0) |
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107 | 107 | queue=Str() |
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108 | 108 | control=Str() |
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109 | 109 | registration=Str() |
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110 | 110 | heartbeat=Str() |
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111 | 111 | pending=Set() |
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112 | 112 | |
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113 | 113 | class HubFactory(RegistrationFactory): |
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114 | 114 | """The Configurable for setting up a Hub.""" |
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115 | 115 | |
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116 | 116 | # name of a scheduler scheme |
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117 | 117 | scheme = Str('leastload', config=True) |
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118 | 118 | |
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119 | 119 | # port-pairs for monitoredqueues: |
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120 | 120 | hb = Instance(list, config=True) |
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121 | 121 | def _hb_default(self): |
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122 | 122 | return select_random_ports(2) |
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123 | 123 | |
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124 | 124 | mux = Instance(list, config=True) |
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125 | 125 | def _mux_default(self): |
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126 | 126 | return select_random_ports(2) |
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127 | 127 | |
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128 | 128 | task = Instance(list, config=True) |
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129 | 129 | def _task_default(self): |
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130 | 130 | return select_random_ports(2) |
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131 | 131 | |
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132 | 132 | control = Instance(list, config=True) |
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133 | 133 | def _control_default(self): |
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134 | 134 | return select_random_ports(2) |
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135 | 135 | |
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136 | 136 | iopub = Instance(list, config=True) |
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137 | 137 | def _iopub_default(self): |
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138 | 138 | return select_random_ports(2) |
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139 | 139 | |
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140 | 140 | # single ports: |
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141 | 141 | mon_port = Instance(int, config=True) |
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142 | 142 | def _mon_port_default(self): |
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143 | 143 | return select_random_ports(1)[0] |
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144 | 144 | |
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145 | 145 | notifier_port = Instance(int, config=True) |
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146 | 146 | def _notifier_port_default(self): |
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147 | 147 | return select_random_ports(1)[0] |
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148 | 148 | |
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149 | 149 | ping = Int(1000, config=True) # ping frequency |
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150 | 150 | |
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151 | 151 | engine_ip = CStr('127.0.0.1', config=True) |
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152 | 152 | engine_transport = CStr('tcp', config=True) |
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153 | 153 | |
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154 | 154 | client_ip = CStr('127.0.0.1', config=True) |
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155 | 155 | client_transport = CStr('tcp', config=True) |
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156 | 156 | |
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157 | 157 | monitor_ip = CStr('127.0.0.1', config=True) |
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158 | 158 | monitor_transport = CStr('tcp', config=True) |
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159 | 159 | |
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160 | 160 | monitor_url = CStr('') |
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161 | 161 | |
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162 | 162 | db_class = CStr('IPython.parallel.controller.dictdb.DictDB', config=True) |
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163 | 163 | |
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164 | 164 | # not configurable |
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165 | 165 | db = Instance('IPython.parallel.controller.dictdb.BaseDB') |
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166 | 166 | heartmonitor = Instance('IPython.parallel.controller.heartmonitor.HeartMonitor') |
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167 | 167 | subconstructors = List() |
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168 | 168 | _constructed = Bool(False) |
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169 | 169 | |
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170 | 170 | def _ip_changed(self, name, old, new): |
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171 | 171 | self.engine_ip = new |
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172 | 172 | self.client_ip = new |
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173 | 173 | self.monitor_ip = new |
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174 | 174 | self._update_monitor_url() |
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175 | 175 | |
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176 | 176 | def _update_monitor_url(self): |
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177 | 177 | self.monitor_url = "%s://%s:%i"%(self.monitor_transport, self.monitor_ip, self.mon_port) |
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178 | 178 | |
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179 | 179 | def _transport_changed(self, name, old, new): |
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180 | 180 | self.engine_transport = new |
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181 | 181 | self.client_transport = new |
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182 | 182 | self.monitor_transport = new |
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183 | 183 | self._update_monitor_url() |
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184 | 184 | |
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185 | 185 | def __init__(self, **kwargs): |
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186 | 186 | super(HubFactory, self).__init__(**kwargs) |
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187 | 187 | self._update_monitor_url() |
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188 | 188 | # self.on_trait_change(self._sync_ips, 'ip') |
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189 | 189 | # self.on_trait_change(self._sync_transports, 'transport') |
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190 | 190 | self.subconstructors.append(self.construct_hub) |
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191 | 191 | |
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192 | 192 | |
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193 | 193 | def construct(self): |
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194 | 194 | assert not self._constructed, "already constructed!" |
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195 | 195 | |
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196 | 196 | for subc in self.subconstructors: |
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197 | 197 | subc() |
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198 | 198 | |
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199 | 199 | self._constructed = True |
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200 | 200 | |
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201 | 201 | |
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202 | 202 | def start(self): |
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203 | 203 | assert self._constructed, "must be constructed by self.construct() first!" |
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204 | 204 | self.heartmonitor.start() |
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205 | 205 | self.log.info("Heartmonitor started") |
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206 | 206 | |
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207 | 207 | def construct_hub(self): |
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208 | 208 | """construct""" |
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209 | 209 | client_iface = "%s://%s:"%(self.client_transport, self.client_ip) + "%i" |
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210 | 210 | engine_iface = "%s://%s:"%(self.engine_transport, self.engine_ip) + "%i" |
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211 | 211 | |
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212 | 212 | ctx = self.context |
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213 | 213 | loop = self.loop |
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214 | 214 | |
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215 | 215 | # Registrar socket |
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216 | 216 | q = ZMQStream(ctx.socket(zmq.XREP), loop) |
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217 | 217 | q.bind(client_iface % self.regport) |
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218 | 218 | self.log.info("Hub listening on %s for registration."%(client_iface%self.regport)) |
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219 | 219 | if self.client_ip != self.engine_ip: |
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220 | 220 | q.bind(engine_iface % self.regport) |
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221 | 221 | self.log.info("Hub listening on %s for registration."%(engine_iface%self.regport)) |
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222 | 222 | |
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223 | 223 | ### Engine connections ### |
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224 | 224 | |
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225 | 225 | # heartbeat |
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226 | 226 | hpub = ctx.socket(zmq.PUB) |
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227 | 227 | hpub.bind(engine_iface % self.hb[0]) |
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228 | 228 | hrep = ctx.socket(zmq.XREP) |
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229 | 229 | hrep.bind(engine_iface % self.hb[1]) |
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230 | 230 | self.heartmonitor = HeartMonitor(loop=loop, pingstream=ZMQStream(hpub,loop), pongstream=ZMQStream(hrep,loop), |
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231 | 231 | period=self.ping, logname=self.log.name) |
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232 | 232 | |
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233 | 233 | ### Client connections ### |
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234 | 234 | # Notifier socket |
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235 | 235 | n = ZMQStream(ctx.socket(zmq.PUB), loop) |
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236 | 236 | n.bind(client_iface%self.notifier_port) |
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237 | 237 | |
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238 | 238 | ### build and launch the queues ### |
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239 | 239 | |
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240 | 240 | # monitor socket |
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241 | 241 | sub = ctx.socket(zmq.SUB) |
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242 | 242 | sub.setsockopt(zmq.SUBSCRIBE, "") |
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243 | 243 | sub.bind(self.monitor_url) |
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244 | 244 | sub.bind('inproc://monitor') |
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245 | 245 | sub = ZMQStream(sub, loop) |
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246 | 246 | |
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247 | 247 | # connect the db |
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248 | 248 | self.log.info('Hub using DB backend: %r'%(self.db_class.split()[-1])) |
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249 | 249 | # cdir = self.config.Global.cluster_dir |
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250 | 250 | self.db = import_item(self.db_class)(session=self.session.session, config=self.config) |
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251 | 251 | time.sleep(.25) |
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252 | 252 | |
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253 | 253 | # build connection dicts |
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254 | 254 | self.engine_info = { |
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255 | 255 | 'control' : engine_iface%self.control[1], |
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256 | 256 | 'mux': engine_iface%self.mux[1], |
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257 | 257 | 'heartbeat': (engine_iface%self.hb[0], engine_iface%self.hb[1]), |
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258 | 258 | 'task' : engine_iface%self.task[1], |
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259 | 259 | 'iopub' : engine_iface%self.iopub[1], |
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260 | 260 | # 'monitor' : engine_iface%self.mon_port, |
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261 | 261 | } |
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262 | 262 | |
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263 | 263 | self.client_info = { |
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264 | 264 | 'control' : client_iface%self.control[0], |
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265 | 265 | 'mux': client_iface%self.mux[0], |
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266 | 266 | 'task' : (self.scheme, client_iface%self.task[0]), |
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267 | 267 | 'iopub' : client_iface%self.iopub[0], |
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268 | 268 | 'notification': client_iface%self.notifier_port |
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269 | 269 | } |
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270 | 270 | self.log.debug("Hub engine addrs: %s"%self.engine_info) |
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271 | 271 | self.log.debug("Hub client addrs: %s"%self.client_info) |
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272 | 272 | self.hub = Hub(loop=loop, session=self.session, monitor=sub, heartmonitor=self.heartmonitor, |
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273 | 273 | query=q, notifier=n, db=self.db, |
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274 | 274 | engine_info=self.engine_info, client_info=self.client_info, |
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275 | 275 | logname=self.log.name) |
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276 | 276 | |
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277 | 277 | |
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278 | 278 | class Hub(LoggingFactory): |
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279 | 279 | """The IPython Controller Hub with 0MQ connections |
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280 | 280 | |
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281 | 281 | Parameters |
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282 | 282 | ========== |
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283 | 283 | loop: zmq IOLoop instance |
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284 | 284 | session: StreamSession object |
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285 | 285 | <removed> context: zmq context for creating new connections (?) |
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286 | 286 | queue: ZMQStream for monitoring the command queue (SUB) |
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287 | 287 | query: ZMQStream for engine registration and client queries requests (XREP) |
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288 | 288 | heartbeat: HeartMonitor object checking the pulse of the engines |
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289 | 289 | notifier: ZMQStream for broadcasting engine registration changes (PUB) |
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290 | 290 | db: connection to db for out of memory logging of commands |
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291 | 291 | NotImplemented |
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292 | 292 | engine_info: dict of zmq connection information for engines to connect |
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293 | 293 | to the queues. |
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294 | 294 | client_info: dict of zmq connection information for engines to connect |
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295 | 295 | to the queues. |
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296 | 296 | """ |
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297 | 297 | # internal data structures: |
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298 | 298 | ids=Set() # engine IDs |
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299 | 299 | keytable=Dict() |
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300 | 300 | by_ident=Dict() |
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301 | 301 | engines=Dict() |
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302 | 302 | clients=Dict() |
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303 | 303 | hearts=Dict() |
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304 | 304 | pending=Set() |
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305 | 305 | queues=Dict() # pending msg_ids keyed by engine_id |
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306 | 306 | tasks=Dict() # pending msg_ids submitted as tasks, keyed by client_id |
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307 | 307 | completed=Dict() # completed msg_ids keyed by engine_id |
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308 | 308 | all_completed=Set() # completed msg_ids keyed by engine_id |
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309 | 309 | dead_engines=Set() # completed msg_ids keyed by engine_id |
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310 | # mia=None | |
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310 | unassigned=Set() # set of task msg_ds not yet assigned a destination | |
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311 | 311 | incoming_registrations=Dict() |
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312 | 312 | registration_timeout=Int() |
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313 | 313 | _idcounter=Int(0) |
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314 | 314 | |
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315 | 315 | # objects from constructor: |
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316 | 316 | loop=Instance(ioloop.IOLoop) |
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317 | 317 | query=Instance(ZMQStream) |
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318 | 318 | monitor=Instance(ZMQStream) |
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319 | 319 | heartmonitor=Instance(HeartMonitor) |
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320 | 320 | notifier=Instance(ZMQStream) |
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321 | 321 | db=Instance(object) |
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322 | 322 | client_info=Dict() |
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323 | 323 | engine_info=Dict() |
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324 | 324 | |
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325 | 325 | |
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326 | 326 | def __init__(self, **kwargs): |
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327 | 327 | """ |
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328 | 328 | # universal: |
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329 | 329 | loop: IOLoop for creating future connections |
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330 | 330 | session: streamsession for sending serialized data |
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331 | 331 | # engine: |
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332 | 332 | queue: ZMQStream for monitoring queue messages |
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333 | 333 | query: ZMQStream for engine+client registration and client requests |
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334 | 334 | heartbeat: HeartMonitor object for tracking engines |
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335 | 335 | # extra: |
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336 | 336 | db: ZMQStream for db connection (NotImplemented) |
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337 | 337 | engine_info: zmq address/protocol dict for engine connections |
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338 | 338 | client_info: zmq address/protocol dict for client connections |
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339 | 339 | """ |
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340 | 340 | |
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341 | 341 | super(Hub, self).__init__(**kwargs) |
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342 | 342 | self.registration_timeout = max(5000, 2*self.heartmonitor.period) |
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343 | 343 | |
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344 | 344 | # validate connection dicts: |
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345 | 345 | for k,v in self.client_info.iteritems(): |
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346 | 346 | if k == 'task': |
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347 | 347 | validate_url_container(v[1]) |
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348 | 348 | else: |
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349 | 349 | validate_url_container(v) |
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350 | 350 | # validate_url_container(self.client_info) |
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351 | 351 | validate_url_container(self.engine_info) |
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352 | 352 | |
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353 | 353 | # register our callbacks |
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354 | 354 | self.query.on_recv(self.dispatch_query) |
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355 | 355 | self.monitor.on_recv(self.dispatch_monitor_traffic) |
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356 | 356 | |
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357 | 357 | self.heartmonitor.add_heart_failure_handler(self.handle_heart_failure) |
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358 | 358 | self.heartmonitor.add_new_heart_handler(self.handle_new_heart) |
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359 | 359 | |
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360 | 360 | self.monitor_handlers = { 'in' : self.save_queue_request, |
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361 | 361 | 'out': self.save_queue_result, |
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362 | 362 | 'intask': self.save_task_request, |
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363 | 363 | 'outtask': self.save_task_result, |
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364 | 364 | 'tracktask': self.save_task_destination, |
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365 | 365 | 'incontrol': _passer, |
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366 | 366 | 'outcontrol': _passer, |
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367 | 367 | 'iopub': self.save_iopub_message, |
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368 | 368 | } |
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369 | 369 | |
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370 | 370 | self.query_handlers = {'queue_request': self.queue_status, |
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371 | 371 | 'result_request': self.get_results, |
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372 | 372 | 'purge_request': self.purge_results, |
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373 | 373 | 'load_request': self.check_load, |
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374 | 374 | 'resubmit_request': self.resubmit_task, |
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375 | 375 | 'shutdown_request': self.shutdown_request, |
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376 | 376 | 'registration_request' : self.register_engine, |
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377 | 377 | 'unregistration_request' : self.unregister_engine, |
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378 | 378 | 'connection_request': self.connection_request, |
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379 | 379 | } |
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380 | 380 | |
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381 | 381 | self.log.info("hub::created hub") |
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382 | 382 | |
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383 | 383 | @property |
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384 | 384 | def _next_id(self): |
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385 | 385 | """gemerate a new ID. |
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386 | 386 | |
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387 | 387 | No longer reuse old ids, just count from 0.""" |
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388 | 388 | newid = self._idcounter |
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389 | 389 | self._idcounter += 1 |
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390 | 390 | return newid |
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391 | 391 | # newid = 0 |
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392 | 392 | # incoming = [id[0] for id in self.incoming_registrations.itervalues()] |
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393 | 393 | # # print newid, self.ids, self.incoming_registrations |
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394 | 394 | # while newid in self.ids or newid in incoming: |
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395 | 395 | # newid += 1 |
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396 | 396 | # return newid |
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397 | 397 | |
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398 | 398 | #----------------------------------------------------------------------------- |
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399 | 399 | # message validation |
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400 | 400 | #----------------------------------------------------------------------------- |
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401 | 401 | |
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402 | 402 | def _validate_targets(self, targets): |
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403 | 403 | """turn any valid targets argument into a list of integer ids""" |
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404 | 404 | if targets is None: |
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405 | 405 | # default to all |
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406 | 406 | targets = self.ids |
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407 | 407 | |
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408 | 408 | if isinstance(targets, (int,str,unicode)): |
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409 | 409 | # only one target specified |
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410 | 410 | targets = [targets] |
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411 | 411 | _targets = [] |
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412 | 412 | for t in targets: |
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413 | 413 | # map raw identities to ids |
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414 | 414 | if isinstance(t, (str,unicode)): |
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415 | 415 | t = self.by_ident.get(t, t) |
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416 | 416 | _targets.append(t) |
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417 | 417 | targets = _targets |
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418 | 418 | bad_targets = [ t for t in targets if t not in self.ids ] |
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419 | 419 | if bad_targets: |
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420 | 420 | raise IndexError("No Such Engine: %r"%bad_targets) |
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421 | 421 | if not targets: |
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422 | 422 | raise IndexError("No Engines Registered") |
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423 | 423 | return targets |
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424 | 424 | |
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425 | 425 | #----------------------------------------------------------------------------- |
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426 | 426 | # dispatch methods (1 per stream) |
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427 | 427 | #----------------------------------------------------------------------------- |
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428 | 428 | |
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429 | 429 | # def dispatch_registration_request(self, msg): |
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430 | 430 | # """""" |
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431 | 431 | # self.log.debug("registration::dispatch_register_request(%s)"%msg) |
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432 | 432 | # idents,msg = self.session.feed_identities(msg) |
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433 | 433 | # if not idents: |
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434 | 434 | # self.log.error("Bad Query Message: %s"%msg, exc_info=True) |
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435 | 435 | # return |
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436 | 436 | # try: |
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437 | 437 | # msg = self.session.unpack_message(msg,content=True) |
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438 | 438 | # except: |
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439 | 439 | # self.log.error("registration::got bad registration message: %s"%msg, exc_info=True) |
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440 | 440 | # return |
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441 | 441 | # |
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442 | 442 | # msg_type = msg['msg_type'] |
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443 | 443 | # content = msg['content'] |
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444 | 444 | # |
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445 | 445 | # handler = self.query_handlers.get(msg_type, None) |
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446 | 446 | # if handler is None: |
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447 | 447 | # self.log.error("registration::got bad registration message: %s"%msg) |
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448 | 448 | # else: |
|
449 | 449 | # handler(idents, msg) |
|
450 | 450 | |
|
451 | 451 | def dispatch_monitor_traffic(self, msg): |
|
452 | 452 | """all ME and Task queue messages come through here, as well as |
|
453 | 453 | IOPub traffic.""" |
|
454 | 454 | self.log.debug("monitor traffic: %s"%msg[:2]) |
|
455 | 455 | switch = msg[0] |
|
456 | 456 | idents, msg = self.session.feed_identities(msg[1:]) |
|
457 | 457 | if not idents: |
|
458 | 458 | self.log.error("Bad Monitor Message: %s"%msg) |
|
459 | 459 | return |
|
460 | 460 | handler = self.monitor_handlers.get(switch, None) |
|
461 | 461 | if handler is not None: |
|
462 | 462 | handler(idents, msg) |
|
463 | 463 | else: |
|
464 | 464 | self.log.error("Invalid monitor topic: %s"%switch) |
|
465 | 465 | |
|
466 | 466 | |
|
467 | 467 | def dispatch_query(self, msg): |
|
468 | 468 | """Route registration requests and queries from clients.""" |
|
469 | 469 | idents, msg = self.session.feed_identities(msg) |
|
470 | 470 | if not idents: |
|
471 | 471 | self.log.error("Bad Query Message: %s"%msg) |
|
472 | 472 | return |
|
473 | 473 | client_id = idents[0] |
|
474 | 474 | try: |
|
475 | 475 | msg = self.session.unpack_message(msg, content=True) |
|
476 | 476 | except: |
|
477 | 477 | content = error.wrap_exception() |
|
478 | 478 | self.log.error("Bad Query Message: %s"%msg, exc_info=True) |
|
479 | 479 | self.session.send(self.query, "hub_error", ident=client_id, |
|
480 | 480 | content=content) |
|
481 | 481 | return |
|
482 | 482 | |
|
483 | 483 | # print client_id, header, parent, content |
|
484 | 484 | #switch on message type: |
|
485 | 485 | msg_type = msg['msg_type'] |
|
486 | 486 | self.log.info("client::client %s requested %s"%(client_id, msg_type)) |
|
487 | 487 | handler = self.query_handlers.get(msg_type, None) |
|
488 | 488 | try: |
|
489 | 489 | assert handler is not None, "Bad Message Type: %s"%msg_type |
|
490 | 490 | except: |
|
491 | 491 | content = error.wrap_exception() |
|
492 | 492 | self.log.error("Bad Message Type: %s"%msg_type, exc_info=True) |
|
493 | 493 | self.session.send(self.query, "hub_error", ident=client_id, |
|
494 | 494 | content=content) |
|
495 | 495 | return |
|
496 | 496 | else: |
|
497 | 497 | handler(idents, msg) |
|
498 | 498 | |
|
499 | 499 | def dispatch_db(self, msg): |
|
500 | 500 | """""" |
|
501 | 501 | raise NotImplementedError |
|
502 | 502 | |
|
503 | 503 | #--------------------------------------------------------------------------- |
|
504 | 504 | # handler methods (1 per event) |
|
505 | 505 | #--------------------------------------------------------------------------- |
|
506 | 506 | |
|
507 | 507 | #----------------------- Heartbeat -------------------------------------- |
|
508 | 508 | |
|
509 | 509 | def handle_new_heart(self, heart): |
|
510 | 510 | """handler to attach to heartbeater. |
|
511 | 511 | Called when a new heart starts to beat. |
|
512 | 512 | Triggers completion of registration.""" |
|
513 | 513 | self.log.debug("heartbeat::handle_new_heart(%r)"%heart) |
|
514 | 514 | if heart not in self.incoming_registrations: |
|
515 | 515 | self.log.info("heartbeat::ignoring new heart: %r"%heart) |
|
516 | 516 | else: |
|
517 | 517 | self.finish_registration(heart) |
|
518 | 518 | |
|
519 | 519 | |
|
520 | 520 | def handle_heart_failure(self, heart): |
|
521 | 521 | """handler to attach to heartbeater. |
|
522 | 522 | called when a previously registered heart fails to respond to beat request. |
|
523 | 523 | triggers unregistration""" |
|
524 | 524 | self.log.debug("heartbeat::handle_heart_failure(%r)"%heart) |
|
525 | 525 | eid = self.hearts.get(heart, None) |
|
526 | 526 | queue = self.engines[eid].queue |
|
527 | 527 | if eid is None: |
|
528 | 528 | self.log.info("heartbeat::ignoring heart failure %r"%heart) |
|
529 | 529 | else: |
|
530 | 530 | self.unregister_engine(heart, dict(content=dict(id=eid, queue=queue))) |
|
531 | 531 | |
|
532 | 532 | #----------------------- MUX Queue Traffic ------------------------------ |
|
533 | 533 | |
|
534 | 534 | def save_queue_request(self, idents, msg): |
|
535 | 535 | if len(idents) < 2: |
|
536 | 536 | self.log.error("invalid identity prefix: %s"%idents) |
|
537 | 537 | return |
|
538 | 538 | queue_id, client_id = idents[:2] |
|
539 | 539 | try: |
|
540 | 540 | msg = self.session.unpack_message(msg, content=False) |
|
541 | 541 | except: |
|
542 | 542 | self.log.error("queue::client %r sent invalid message to %r: %s"%(client_id, queue_id, msg), exc_info=True) |
|
543 | 543 | return |
|
544 | 544 | |
|
545 | 545 | eid = self.by_ident.get(queue_id, None) |
|
546 | 546 | if eid is None: |
|
547 | 547 | self.log.error("queue::target %r not registered"%queue_id) |
|
548 | 548 | self.log.debug("queue:: valid are: %s"%(self.by_ident.keys())) |
|
549 | 549 | return |
|
550 | 550 | |
|
551 | 551 | header = msg['header'] |
|
552 | 552 | msg_id = header['msg_id'] |
|
553 | 553 | record = init_record(msg) |
|
554 | 554 | record['engine_uuid'] = queue_id |
|
555 | 555 | record['client_uuid'] = client_id |
|
556 | 556 | record['queue'] = 'mux' |
|
557 | 557 | |
|
558 | 558 | try: |
|
559 | 559 | # it's posible iopub arrived first: |
|
560 | 560 | existing = self.db.get_record(msg_id) |
|
561 | 561 | for key,evalue in existing.iteritems(): |
|
562 | 562 | rvalue = record[key] |
|
563 | 563 | if evalue and rvalue and evalue != rvalue: |
|
564 | 564 | self.log.error("conflicting initial state for record: %s:%s <> %s"%(msg_id, rvalue, evalue)) |
|
565 | 565 | elif evalue and not rvalue: |
|
566 | 566 | record[key] = evalue |
|
567 | 567 | self.db.update_record(msg_id, record) |
|
568 | 568 | except KeyError: |
|
569 | 569 | self.db.add_record(msg_id, record) |
|
570 | 570 | |
|
571 | 571 | self.pending.add(msg_id) |
|
572 | 572 | self.queues[eid].append(msg_id) |
|
573 | 573 | |
|
574 | 574 | def save_queue_result(self, idents, msg): |
|
575 | 575 | if len(idents) < 2: |
|
576 | 576 | self.log.error("invalid identity prefix: %s"%idents) |
|
577 | 577 | return |
|
578 | 578 | |
|
579 | 579 | client_id, queue_id = idents[:2] |
|
580 | 580 | try: |
|
581 | 581 | msg = self.session.unpack_message(msg, content=False) |
|
582 | 582 | except: |
|
583 | 583 | self.log.error("queue::engine %r sent invalid message to %r: %s"%( |
|
584 | 584 | queue_id,client_id, msg), exc_info=True) |
|
585 | 585 | return |
|
586 | 586 | |
|
587 | 587 | eid = self.by_ident.get(queue_id, None) |
|
588 | 588 | if eid is None: |
|
589 | 589 | self.log.error("queue::unknown engine %r is sending a reply: "%queue_id) |
|
590 | 590 | # self.log.debug("queue:: %s"%msg[2:]) |
|
591 | 591 | return |
|
592 | 592 | |
|
593 | 593 | parent = msg['parent_header'] |
|
594 | 594 | if not parent: |
|
595 | 595 | return |
|
596 | 596 | msg_id = parent['msg_id'] |
|
597 | 597 | if msg_id in self.pending: |
|
598 | 598 | self.pending.remove(msg_id) |
|
599 | 599 | self.all_completed.add(msg_id) |
|
600 | 600 | self.queues[eid].remove(msg_id) |
|
601 | 601 | self.completed[eid].append(msg_id) |
|
602 | 602 | elif msg_id not in self.all_completed: |
|
603 | 603 | # it could be a result from a dead engine that died before delivering the |
|
604 | 604 | # result |
|
605 | 605 | self.log.warn("queue:: unknown msg finished %s"%msg_id) |
|
606 | 606 | return |
|
607 | 607 | # update record anyway, because the unregistration could have been premature |
|
608 | 608 | rheader = msg['header'] |
|
609 | 609 | completed = datetime.strptime(rheader['date'], ISO8601) |
|
610 | 610 | started = rheader.get('started', None) |
|
611 | 611 | if started is not None: |
|
612 | 612 | started = datetime.strptime(started, ISO8601) |
|
613 | 613 | result = { |
|
614 | 614 | 'result_header' : rheader, |
|
615 | 615 | 'result_content': msg['content'], |
|
616 | 616 | 'started' : started, |
|
617 | 617 | 'completed' : completed |
|
618 | 618 | } |
|
619 | 619 | |
|
620 | 620 | result['result_buffers'] = msg['buffers'] |
|
621 | 621 | self.db.update_record(msg_id, result) |
|
622 | 622 | |
|
623 | 623 | |
|
624 | 624 | #--------------------- Task Queue Traffic ------------------------------ |
|
625 | 625 | |
|
626 | 626 | def save_task_request(self, idents, msg): |
|
627 | 627 | """Save the submission of a task.""" |
|
628 | 628 | client_id = idents[0] |
|
629 | 629 | |
|
630 | 630 | try: |
|
631 | 631 | msg = self.session.unpack_message(msg, content=False) |
|
632 | 632 | except: |
|
633 | 633 | self.log.error("task::client %r sent invalid task message: %s"%( |
|
634 | 634 | client_id, msg), exc_info=True) |
|
635 | 635 | return |
|
636 | 636 | record = init_record(msg) |
|
637 | 637 | |
|
638 | 638 | record['client_uuid'] = client_id |
|
639 | 639 | record['queue'] = 'task' |
|
640 | 640 | header = msg['header'] |
|
641 | 641 | msg_id = header['msg_id'] |
|
642 | 642 | self.pending.add(msg_id) |
|
643 | self.unassigned.add(msg_id) | |
|
643 | 644 | try: |
|
644 | 645 | # it's posible iopub arrived first: |
|
645 | 646 | existing = self.db.get_record(msg_id) |
|
646 | 647 | for key,evalue in existing.iteritems(): |
|
647 | 648 | rvalue = record[key] |
|
648 | 649 | if evalue and rvalue and evalue != rvalue: |
|
649 | 650 | self.log.error("conflicting initial state for record: %s:%s <> %s"%(msg_id, rvalue, evalue)) |
|
650 | 651 | elif evalue and not rvalue: |
|
651 | 652 | record[key] = evalue |
|
652 | 653 | self.db.update_record(msg_id, record) |
|
653 | 654 | except KeyError: |
|
654 | 655 | self.db.add_record(msg_id, record) |
|
655 | 656 | |
|
656 | 657 | def save_task_result(self, idents, msg): |
|
657 | 658 | """save the result of a completed task.""" |
|
658 | 659 | client_id = idents[0] |
|
659 | 660 | try: |
|
660 | 661 | msg = self.session.unpack_message(msg, content=False) |
|
661 | 662 | except: |
|
662 | 663 | self.log.error("task::invalid task result message send to %r: %s"%( |
|
663 | 664 | client_id, msg), exc_info=True) |
|
664 | 665 | raise |
|
665 | 666 | return |
|
666 | 667 | |
|
667 | 668 | parent = msg['parent_header'] |
|
668 | 669 | if not parent: |
|
669 | 670 | # print msg |
|
670 | 671 | self.log.warn("Task %r had no parent!"%msg) |
|
671 | 672 | return |
|
672 | 673 | msg_id = parent['msg_id'] |
|
674 | if msg_id in self.unassigned: | |
|
675 | self.unassigned.remove(msg_id) | |
|
673 | 676 | |
|
674 | 677 | header = msg['header'] |
|
675 | 678 | engine_uuid = header.get('engine', None) |
|
676 | 679 | eid = self.by_ident.get(engine_uuid, None) |
|
677 | 680 | |
|
678 | 681 | if msg_id in self.pending: |
|
679 | 682 | self.pending.remove(msg_id) |
|
680 | 683 | self.all_completed.add(msg_id) |
|
681 | 684 | if eid is not None: |
|
682 | 685 | self.completed[eid].append(msg_id) |
|
683 | 686 | if msg_id in self.tasks[eid]: |
|
684 | 687 | self.tasks[eid].remove(msg_id) |
|
685 | 688 | completed = datetime.strptime(header['date'], ISO8601) |
|
686 | 689 | started = header.get('started', None) |
|
687 | 690 | if started is not None: |
|
688 | 691 | started = datetime.strptime(started, ISO8601) |
|
689 | 692 | result = { |
|
690 | 693 | 'result_header' : header, |
|
691 | 694 | 'result_content': msg['content'], |
|
692 | 695 | 'started' : started, |
|
693 | 696 | 'completed' : completed, |
|
694 | 697 | 'engine_uuid': engine_uuid |
|
695 | 698 | } |
|
696 | 699 | |
|
697 | 700 | result['result_buffers'] = msg['buffers'] |
|
698 | 701 | self.db.update_record(msg_id, result) |
|
699 | 702 | |
|
700 | 703 | else: |
|
701 | 704 | self.log.debug("task::unknown task %s finished"%msg_id) |
|
702 | 705 | |
|
703 | 706 | def save_task_destination(self, idents, msg): |
|
704 | 707 | try: |
|
705 | 708 | msg = self.session.unpack_message(msg, content=True) |
|
706 | 709 | except: |
|
707 | 710 | self.log.error("task::invalid task tracking message", exc_info=True) |
|
708 | 711 | return |
|
709 | 712 | content = msg['content'] |
|
710 | 713 | # print (content) |
|
711 | 714 | msg_id = content['msg_id'] |
|
712 | 715 | engine_uuid = content['engine_id'] |
|
713 | 716 | eid = self.by_ident[engine_uuid] |
|
714 | 717 | |
|
715 | 718 | self.log.info("task::task %s arrived on %s"%(msg_id, eid)) |
|
716 |
|
|
|
717 |
|
|
|
719 | if msg_id in self.unassigned: | |
|
720 | self.unassigned.remove(msg_id) | |
|
718 | 721 | # else: |
|
719 | 722 | # self.log.debug("task::task %s not listed as MIA?!"%(msg_id)) |
|
720 | 723 | |
|
721 | 724 | self.tasks[eid].append(msg_id) |
|
722 | 725 | # self.pending[msg_id][1].update(received=datetime.now(),engine=(eid,engine_uuid)) |
|
723 | 726 | self.db.update_record(msg_id, dict(engine_uuid=engine_uuid)) |
|
724 | 727 | |
|
725 | 728 | def mia_task_request(self, idents, msg): |
|
726 | 729 | raise NotImplementedError |
|
727 | 730 | client_id = idents[0] |
|
728 | 731 | # content = dict(mia=self.mia,status='ok') |
|
729 | 732 | # self.session.send('mia_reply', content=content, idents=client_id) |
|
730 | 733 | |
|
731 | 734 | |
|
732 | 735 | #--------------------- IOPub Traffic ------------------------------ |
|
733 | 736 | |
|
734 | 737 | def save_iopub_message(self, topics, msg): |
|
735 | 738 | """save an iopub message into the db""" |
|
736 | 739 | # print (topics) |
|
737 | 740 | try: |
|
738 | 741 | msg = self.session.unpack_message(msg, content=True) |
|
739 | 742 | except: |
|
740 | 743 | self.log.error("iopub::invalid IOPub message", exc_info=True) |
|
741 | 744 | return |
|
742 | 745 | |
|
743 | 746 | parent = msg['parent_header'] |
|
744 | 747 | if not parent: |
|
745 | 748 | self.log.error("iopub::invalid IOPub message: %s"%msg) |
|
746 | 749 | return |
|
747 | 750 | msg_id = parent['msg_id'] |
|
748 | 751 | msg_type = msg['msg_type'] |
|
749 | 752 | content = msg['content'] |
|
750 | 753 | |
|
751 | 754 | # ensure msg_id is in db |
|
752 | 755 | try: |
|
753 | 756 | rec = self.db.get_record(msg_id) |
|
754 | 757 | except KeyError: |
|
755 | 758 | rec = empty_record() |
|
756 | 759 | rec['msg_id'] = msg_id |
|
757 | 760 | self.db.add_record(msg_id, rec) |
|
758 | 761 | # stream |
|
759 | 762 | d = {} |
|
760 | 763 | if msg_type == 'stream': |
|
761 | 764 | name = content['name'] |
|
762 | 765 | s = rec[name] or '' |
|
763 | 766 | d[name] = s + content['data'] |
|
764 | 767 | |
|
765 | 768 | elif msg_type == 'pyerr': |
|
766 | 769 | d['pyerr'] = content |
|
767 | 770 | elif msg_type == 'pyin': |
|
768 | 771 | d['pyin'] = content['code'] |
|
769 | 772 | else: |
|
770 | 773 | d[msg_type] = content.get('data', '') |
|
771 | 774 | |
|
772 | 775 | self.db.update_record(msg_id, d) |
|
773 | 776 | |
|
774 | 777 | |
|
775 | 778 | |
|
776 | 779 | #------------------------------------------------------------------------- |
|
777 | 780 | # Registration requests |
|
778 | 781 | #------------------------------------------------------------------------- |
|
779 | 782 | |
|
780 | 783 | def connection_request(self, client_id, msg): |
|
781 | 784 | """Reply with connection addresses for clients.""" |
|
782 | 785 | self.log.info("client::client %s connected"%client_id) |
|
783 | 786 | content = dict(status='ok') |
|
784 | 787 | content.update(self.client_info) |
|
785 | 788 | jsonable = {} |
|
786 | 789 | for k,v in self.keytable.iteritems(): |
|
787 | 790 | if v not in self.dead_engines: |
|
788 | 791 | jsonable[str(k)] = v |
|
789 | 792 | content['engines'] = jsonable |
|
790 | 793 | self.session.send(self.query, 'connection_reply', content, parent=msg, ident=client_id) |
|
791 | 794 | |
|
792 | 795 | def register_engine(self, reg, msg): |
|
793 | 796 | """Register a new engine.""" |
|
794 | 797 | content = msg['content'] |
|
795 | 798 | try: |
|
796 | 799 | queue = content['queue'] |
|
797 | 800 | except KeyError: |
|
798 | 801 | self.log.error("registration::queue not specified", exc_info=True) |
|
799 | 802 | return |
|
800 | 803 | heart = content.get('heartbeat', None) |
|
801 | 804 | """register a new engine, and create the socket(s) necessary""" |
|
802 | 805 | eid = self._next_id |
|
803 | 806 | # print (eid, queue, reg, heart) |
|
804 | 807 | |
|
805 | 808 | self.log.debug("registration::register_engine(%i, %r, %r, %r)"%(eid, queue, reg, heart)) |
|
806 | 809 | |
|
807 | 810 | content = dict(id=eid,status='ok') |
|
808 | 811 | content.update(self.engine_info) |
|
809 | 812 | # check if requesting available IDs: |
|
810 | 813 | if queue in self.by_ident: |
|
811 | 814 | try: |
|
812 | 815 | raise KeyError("queue_id %r in use"%queue) |
|
813 | 816 | except: |
|
814 | 817 | content = error.wrap_exception() |
|
815 | 818 | self.log.error("queue_id %r in use"%queue, exc_info=True) |
|
816 | 819 | elif heart in self.hearts: # need to check unique hearts? |
|
817 | 820 | try: |
|
818 | 821 | raise KeyError("heart_id %r in use"%heart) |
|
819 | 822 | except: |
|
820 | 823 | self.log.error("heart_id %r in use"%heart, exc_info=True) |
|
821 | 824 | content = error.wrap_exception() |
|
822 | 825 | else: |
|
823 | 826 | for h, pack in self.incoming_registrations.iteritems(): |
|
824 | 827 | if heart == h: |
|
825 | 828 | try: |
|
826 | 829 | raise KeyError("heart_id %r in use"%heart) |
|
827 | 830 | except: |
|
828 | 831 | self.log.error("heart_id %r in use"%heart, exc_info=True) |
|
829 | 832 | content = error.wrap_exception() |
|
830 | 833 | break |
|
831 | 834 | elif queue == pack[1]: |
|
832 | 835 | try: |
|
833 | 836 | raise KeyError("queue_id %r in use"%queue) |
|
834 | 837 | except: |
|
835 | 838 | self.log.error("queue_id %r in use"%queue, exc_info=True) |
|
836 | 839 | content = error.wrap_exception() |
|
837 | 840 | break |
|
838 | 841 | |
|
839 | 842 | msg = self.session.send(self.query, "registration_reply", |
|
840 | 843 | content=content, |
|
841 | 844 | ident=reg) |
|
842 | 845 | |
|
843 | 846 | if content['status'] == 'ok': |
|
844 | 847 | if heart in self.heartmonitor.hearts: |
|
845 | 848 | # already beating |
|
846 | 849 | self.incoming_registrations[heart] = (eid,queue,reg[0],None) |
|
847 | 850 | self.finish_registration(heart) |
|
848 | 851 | else: |
|
849 | 852 | purge = lambda : self._purge_stalled_registration(heart) |
|
850 | 853 | dc = ioloop.DelayedCallback(purge, self.registration_timeout, self.loop) |
|
851 | 854 | dc.start() |
|
852 | 855 | self.incoming_registrations[heart] = (eid,queue,reg[0],dc) |
|
853 | 856 | else: |
|
854 | 857 | self.log.error("registration::registration %i failed: %s"%(eid, content['evalue'])) |
|
855 | 858 | return eid |
|
856 | 859 | |
|
857 | 860 | def unregister_engine(self, ident, msg): |
|
858 | 861 | """Unregister an engine that explicitly requested to leave.""" |
|
859 | 862 | try: |
|
860 | 863 | eid = msg['content']['id'] |
|
861 | 864 | except: |
|
862 | 865 | self.log.error("registration::bad engine id for unregistration: %s"%ident, exc_info=True) |
|
863 | 866 | return |
|
864 | 867 | self.log.info("registration::unregister_engine(%s)"%eid) |
|
865 | 868 | # print (eid) |
|
866 | 869 | uuid = self.keytable[eid] |
|
867 | 870 | content=dict(id=eid, queue=uuid) |
|
868 | 871 | self.dead_engines.add(uuid) |
|
869 | 872 | # self.ids.remove(eid) |
|
870 | 873 | # uuid = self.keytable.pop(eid) |
|
871 | 874 | # |
|
872 | 875 | # ec = self.engines.pop(eid) |
|
873 | 876 | # self.hearts.pop(ec.heartbeat) |
|
874 | 877 | # self.by_ident.pop(ec.queue) |
|
875 | 878 | # self.completed.pop(eid) |
|
876 | 879 | handleit = lambda : self._handle_stranded_msgs(eid, uuid) |
|
877 | 880 | dc = ioloop.DelayedCallback(handleit, self.registration_timeout, self.loop) |
|
878 | 881 | dc.start() |
|
879 | 882 | ############## TODO: HANDLE IT ################ |
|
880 | 883 | |
|
881 | 884 | if self.notifier: |
|
882 | 885 | self.session.send(self.notifier, "unregistration_notification", content=content) |
|
883 | 886 | |
|
884 | 887 | def _handle_stranded_msgs(self, eid, uuid): |
|
885 | 888 | """Handle messages known to be on an engine when the engine unregisters. |
|
886 | 889 | |
|
887 | 890 | It is possible that this will fire prematurely - that is, an engine will |
|
888 | 891 | go down after completing a result, and the client will be notified |
|
889 | 892 | that the result failed and later receive the actual result. |
|
890 | 893 | """ |
|
891 | 894 | |
|
892 | 895 | outstanding = self.queues[eid] |
|
893 | 896 | |
|
894 | 897 | for msg_id in outstanding: |
|
895 | 898 | self.pending.remove(msg_id) |
|
896 | 899 | self.all_completed.add(msg_id) |
|
897 | 900 | try: |
|
898 | 901 | raise error.EngineError("Engine %r died while running task %r"%(eid, msg_id)) |
|
899 | 902 | except: |
|
900 | 903 | content = error.wrap_exception() |
|
901 | 904 | # build a fake header: |
|
902 | 905 | header = {} |
|
903 | 906 | header['engine'] = uuid |
|
904 | 907 | header['date'] = datetime.now().strftime(ISO8601) |
|
905 | 908 | rec = dict(result_content=content, result_header=header, result_buffers=[]) |
|
906 | 909 | rec['completed'] = header['date'] |
|
907 | 910 | rec['engine_uuid'] = uuid |
|
908 | 911 | self.db.update_record(msg_id, rec) |
|
909 | 912 | |
|
910 | 913 | def finish_registration(self, heart): |
|
911 | 914 | """Second half of engine registration, called after our HeartMonitor |
|
912 | 915 | has received a beat from the Engine's Heart.""" |
|
913 | 916 | try: |
|
914 | 917 | (eid,queue,reg,purge) = self.incoming_registrations.pop(heart) |
|
915 | 918 | except KeyError: |
|
916 | 919 | self.log.error("registration::tried to finish nonexistant registration", exc_info=True) |
|
917 | 920 | return |
|
918 | 921 | self.log.info("registration::finished registering engine %i:%r"%(eid,queue)) |
|
919 | 922 | if purge is not None: |
|
920 | 923 | purge.stop() |
|
921 | 924 | control = queue |
|
922 | 925 | self.ids.add(eid) |
|
923 | 926 | self.keytable[eid] = queue |
|
924 | 927 | self.engines[eid] = EngineConnector(id=eid, queue=queue, registration=reg, |
|
925 | 928 | control=control, heartbeat=heart) |
|
926 | 929 | self.by_ident[queue] = eid |
|
927 | 930 | self.queues[eid] = list() |
|
928 | 931 | self.tasks[eid] = list() |
|
929 | 932 | self.completed[eid] = list() |
|
930 | 933 | self.hearts[heart] = eid |
|
931 | 934 | content = dict(id=eid, queue=self.engines[eid].queue) |
|
932 | 935 | if self.notifier: |
|
933 | 936 | self.session.send(self.notifier, "registration_notification", content=content) |
|
934 | 937 | self.log.info("engine::Engine Connected: %i"%eid) |
|
935 | 938 | |
|
936 | 939 | def _purge_stalled_registration(self, heart): |
|
937 | 940 | if heart in self.incoming_registrations: |
|
938 | 941 | eid = self.incoming_registrations.pop(heart)[0] |
|
939 | 942 | self.log.info("registration::purging stalled registration: %i"%eid) |
|
940 | 943 | else: |
|
941 | 944 | pass |
|
942 | 945 | |
|
943 | 946 | #------------------------------------------------------------------------- |
|
944 | 947 | # Client Requests |
|
945 | 948 | #------------------------------------------------------------------------- |
|
946 | 949 | |
|
947 | 950 | def shutdown_request(self, client_id, msg): |
|
948 | 951 | """handle shutdown request.""" |
|
949 | 952 | self.session.send(self.query, 'shutdown_reply', content={'status': 'ok'}, ident=client_id) |
|
950 | 953 | # also notify other clients of shutdown |
|
951 | 954 | self.session.send(self.notifier, 'shutdown_notice', content={'status': 'ok'}) |
|
952 | 955 | dc = ioloop.DelayedCallback(lambda : self._shutdown(), 1000, self.loop) |
|
953 | 956 | dc.start() |
|
954 | 957 | |
|
955 | 958 | def _shutdown(self): |
|
956 | 959 | self.log.info("hub::hub shutting down.") |
|
957 | 960 | time.sleep(0.1) |
|
958 | 961 | sys.exit(0) |
|
959 | 962 | |
|
960 | 963 | |
|
961 | 964 | def check_load(self, client_id, msg): |
|
962 | 965 | content = msg['content'] |
|
963 | 966 | try: |
|
964 | 967 | targets = content['targets'] |
|
965 | 968 | targets = self._validate_targets(targets) |
|
966 | 969 | except: |
|
967 | 970 | content = error.wrap_exception() |
|
968 | 971 | self.session.send(self.query, "hub_error", |
|
969 | 972 | content=content, ident=client_id) |
|
970 | 973 | return |
|
971 | 974 | |
|
972 | 975 | content = dict(status='ok') |
|
973 | 976 | # loads = {} |
|
974 | 977 | for t in targets: |
|
975 | 978 | content[bytes(t)] = len(self.queues[t])+len(self.tasks[t]) |
|
976 | 979 | self.session.send(self.query, "load_reply", content=content, ident=client_id) |
|
977 | 980 | |
|
978 | 981 | |
|
979 | 982 | def queue_status(self, client_id, msg): |
|
980 | 983 | """Return the Queue status of one or more targets. |
|
981 | 984 | if verbose: return the msg_ids |
|
982 | 985 | else: return len of each type. |
|
983 | 986 | keys: queue (pending MUX jobs) |
|
984 | 987 | tasks (pending Task jobs) |
|
985 | 988 | completed (finished jobs from both queues)""" |
|
986 | 989 | content = msg['content'] |
|
987 | 990 | targets = content['targets'] |
|
988 | 991 | try: |
|
989 | 992 | targets = self._validate_targets(targets) |
|
990 | 993 | except: |
|
991 | 994 | content = error.wrap_exception() |
|
992 | 995 | self.session.send(self.query, "hub_error", |
|
993 | 996 | content=content, ident=client_id) |
|
994 | 997 | return |
|
995 | 998 | verbose = content.get('verbose', False) |
|
996 | 999 | content = dict(status='ok') |
|
997 | 1000 | for t in targets: |
|
998 | 1001 | queue = self.queues[t] |
|
999 | 1002 | completed = self.completed[t] |
|
1000 | 1003 | tasks = self.tasks[t] |
|
1001 | 1004 | if not verbose: |
|
1002 | 1005 | queue = len(queue) |
|
1003 | 1006 | completed = len(completed) |
|
1004 | 1007 | tasks = len(tasks) |
|
1005 | 1008 | content[bytes(t)] = {'queue': queue, 'completed': completed , 'tasks': tasks} |
|
1006 | # pending | |
|
1009 | content['unassigned'] = list(self.unassigned) if verbose else len(self.unassigned) | |
|
1010 | ||
|
1007 | 1011 | self.session.send(self.query, "queue_reply", content=content, ident=client_id) |
|
1008 | 1012 | |
|
1009 | 1013 | def purge_results(self, client_id, msg): |
|
1010 | 1014 | """Purge results from memory. This method is more valuable before we move |
|
1011 | 1015 | to a DB based message storage mechanism.""" |
|
1012 | 1016 | content = msg['content'] |
|
1013 | 1017 | msg_ids = content.get('msg_ids', []) |
|
1014 | 1018 | reply = dict(status='ok') |
|
1015 | 1019 | if msg_ids == 'all': |
|
1016 | 1020 | self.db.drop_matching_records(dict(completed={'$ne':None})) |
|
1017 | 1021 | else: |
|
1018 | 1022 | for msg_id in msg_ids: |
|
1019 | 1023 | if msg_id in self.all_completed: |
|
1020 | 1024 | self.db.drop_record(msg_id) |
|
1021 | 1025 | else: |
|
1022 | 1026 | if msg_id in self.pending: |
|
1023 | 1027 | try: |
|
1024 | 1028 | raise IndexError("msg pending: %r"%msg_id) |
|
1025 | 1029 | except: |
|
1026 | 1030 | reply = error.wrap_exception() |
|
1027 | 1031 | else: |
|
1028 | 1032 | try: |
|
1029 | 1033 | raise IndexError("No such msg: %r"%msg_id) |
|
1030 | 1034 | except: |
|
1031 | 1035 | reply = error.wrap_exception() |
|
1032 | 1036 | break |
|
1033 | 1037 | eids = content.get('engine_ids', []) |
|
1034 | 1038 | for eid in eids: |
|
1035 | 1039 | if eid not in self.engines: |
|
1036 | 1040 | try: |
|
1037 | 1041 | raise IndexError("No such engine: %i"%eid) |
|
1038 | 1042 | except: |
|
1039 | 1043 | reply = error.wrap_exception() |
|
1040 | 1044 | break |
|
1041 | 1045 | msg_ids = self.completed.pop(eid) |
|
1042 | 1046 | uid = self.engines[eid].queue |
|
1043 | 1047 | self.db.drop_matching_records(dict(engine_uuid=uid, completed={'$ne':None})) |
|
1044 | 1048 | |
|
1045 | 1049 | self.session.send(self.query, 'purge_reply', content=reply, ident=client_id) |
|
1046 | 1050 | |
|
1047 | 1051 | def resubmit_task(self, client_id, msg, buffers): |
|
1048 | 1052 | """Resubmit a task.""" |
|
1049 | 1053 | raise NotImplementedError |
|
1050 | 1054 | |
|
1051 | 1055 | def get_results(self, client_id, msg): |
|
1052 | 1056 | """Get the result of 1 or more messages.""" |
|
1053 | 1057 | content = msg['content'] |
|
1054 | 1058 | msg_ids = sorted(set(content['msg_ids'])) |
|
1055 | 1059 | statusonly = content.get('status_only', False) |
|
1056 | 1060 | pending = [] |
|
1057 | 1061 | completed = [] |
|
1058 | 1062 | content = dict(status='ok') |
|
1059 | 1063 | content['pending'] = pending |
|
1060 | 1064 | content['completed'] = completed |
|
1061 | 1065 | buffers = [] |
|
1062 | 1066 | if not statusonly: |
|
1063 | 1067 | content['results'] = {} |
|
1064 | 1068 | records = self.db.find_records(dict(msg_id={'$in':msg_ids})) |
|
1065 | 1069 | for msg_id in msg_ids: |
|
1066 | 1070 | if msg_id in self.pending: |
|
1067 | 1071 | pending.append(msg_id) |
|
1068 | 1072 | elif msg_id in self.all_completed: |
|
1069 | 1073 | completed.append(msg_id) |
|
1070 | 1074 | if not statusonly: |
|
1071 | 1075 | rec = records[msg_id] |
|
1072 | 1076 | io_dict = {} |
|
1073 | 1077 | for key in 'pyin pyout pyerr stdout stderr'.split(): |
|
1074 | 1078 | io_dict[key] = rec[key] |
|
1075 | 1079 | content[msg_id] = { 'result_content': rec['result_content'], |
|
1076 | 1080 | 'header': rec['header'], |
|
1077 | 1081 | 'result_header' : rec['result_header'], |
|
1078 | 1082 | 'io' : io_dict, |
|
1079 | 1083 | } |
|
1080 | 1084 | if rec['result_buffers']: |
|
1081 | 1085 | buffers.extend(map(str, rec['result_buffers'])) |
|
1082 | 1086 | else: |
|
1083 | 1087 | try: |
|
1084 | 1088 | raise KeyError('No such message: '+msg_id) |
|
1085 | 1089 | except: |
|
1086 | 1090 | content = error.wrap_exception() |
|
1087 | 1091 | break |
|
1088 | 1092 | self.session.send(self.query, "result_reply", content=content, |
|
1089 | 1093 | parent=msg, ident=client_id, |
|
1090 | 1094 | buffers=buffers) |
|
1091 | 1095 |
@@ -1,430 +1,431 b'' | |||
|
1 | 1 | #!/usr/bin/env python |
|
2 | 2 | """ |
|
3 | 3 | Kernel adapted from kernel.py to use ZMQ Streams |
|
4 | 4 | """ |
|
5 | 5 | #----------------------------------------------------------------------------- |
|
6 | 6 | # Copyright (C) 2010-2011 The IPython Development Team |
|
7 | 7 | # |
|
8 | 8 | # Distributed under the terms of the BSD License. The full license is in |
|
9 | 9 | # the file COPYING, distributed as part of this software. |
|
10 | 10 | #----------------------------------------------------------------------------- |
|
11 | 11 | |
|
12 | 12 | #----------------------------------------------------------------------------- |
|
13 | 13 | # Imports |
|
14 | 14 | #----------------------------------------------------------------------------- |
|
15 | 15 | |
|
16 | 16 | # Standard library imports. |
|
17 | 17 | from __future__ import print_function |
|
18 | 18 | |
|
19 | 19 | import sys |
|
20 | 20 | import time |
|
21 | 21 | |
|
22 | 22 | from code import CommandCompiler |
|
23 | 23 | from datetime import datetime |
|
24 | 24 | from pprint import pprint |
|
25 | 25 | |
|
26 | 26 | # System library imports. |
|
27 | 27 | import zmq |
|
28 | 28 | from zmq.eventloop import ioloop, zmqstream |
|
29 | 29 | |
|
30 | 30 | # Local imports. |
|
31 | 31 | from IPython.utils.traitlets import Instance, List, Int, Dict, Set, Str |
|
32 | 32 | from IPython.zmq.completer import KernelCompleter |
|
33 | 33 | |
|
34 | 34 | from IPython.parallel.error import wrap_exception |
|
35 | 35 | from IPython.parallel.factory import SessionFactory |
|
36 | 36 | from IPython.parallel.util import serialize_object, unpack_apply_message, ISO8601 |
|
37 | 37 | |
|
38 | 38 | def printer(*args): |
|
39 | 39 | pprint(args, stream=sys.__stdout__) |
|
40 | 40 | |
|
41 | 41 | |
|
42 | 42 | class _Passer(zmqstream.ZMQStream): |
|
43 | 43 | """Empty class that implements `send()` that does nothing. |
|
44 | 44 | |
|
45 | 45 | Subclass ZMQStream for StreamSession typechecking |
|
46 | 46 | |
|
47 | 47 | """ |
|
48 | 48 | def __init__(self, *args, **kwargs): |
|
49 | 49 | pass |
|
50 | 50 | |
|
51 | 51 | def send(self, *args, **kwargs): |
|
52 | 52 | pass |
|
53 | 53 | send_multipart = send |
|
54 | 54 | |
|
55 | 55 | |
|
56 | 56 | #----------------------------------------------------------------------------- |
|
57 | 57 | # Main kernel class |
|
58 | 58 | #----------------------------------------------------------------------------- |
|
59 | 59 | |
|
60 | 60 | class Kernel(SessionFactory): |
|
61 | 61 | |
|
62 | 62 | #--------------------------------------------------------------------------- |
|
63 | 63 | # Kernel interface |
|
64 | 64 | #--------------------------------------------------------------------------- |
|
65 | 65 | |
|
66 | 66 | # kwargs: |
|
67 | 67 | int_id = Int(-1, config=True) |
|
68 | 68 | user_ns = Dict(config=True) |
|
69 | 69 | exec_lines = List(config=True) |
|
70 | 70 | |
|
71 | 71 | control_stream = Instance(zmqstream.ZMQStream) |
|
72 | 72 | task_stream = Instance(zmqstream.ZMQStream) |
|
73 | 73 | iopub_stream = Instance(zmqstream.ZMQStream) |
|
74 | 74 | client = Instance('IPython.parallel.Client') |
|
75 | 75 | |
|
76 | 76 | # internals |
|
77 | 77 | shell_streams = List() |
|
78 | 78 | compiler = Instance(CommandCompiler, (), {}) |
|
79 | 79 | completer = Instance(KernelCompleter) |
|
80 | 80 | |
|
81 | 81 | aborted = Set() |
|
82 | 82 | shell_handlers = Dict() |
|
83 | 83 | control_handlers = Dict() |
|
84 | 84 | |
|
85 | 85 | def _set_prefix(self): |
|
86 | 86 | self.prefix = "engine.%s"%self.int_id |
|
87 | 87 | |
|
88 | 88 | def _connect_completer(self): |
|
89 | 89 | self.completer = KernelCompleter(self.user_ns) |
|
90 | 90 | |
|
91 | 91 | def __init__(self, **kwargs): |
|
92 | 92 | super(Kernel, self).__init__(**kwargs) |
|
93 | 93 | self._set_prefix() |
|
94 | 94 | self._connect_completer() |
|
95 | 95 | |
|
96 | 96 | self.on_trait_change(self._set_prefix, 'id') |
|
97 | 97 | self.on_trait_change(self._connect_completer, 'user_ns') |
|
98 | 98 | |
|
99 | 99 | # Build dict of handlers for message types |
|
100 | 100 | for msg_type in ['execute_request', 'complete_request', 'apply_request', |
|
101 | 101 | 'clear_request']: |
|
102 | 102 | self.shell_handlers[msg_type] = getattr(self, msg_type) |
|
103 | 103 | |
|
104 | 104 | for msg_type in ['shutdown_request', 'abort_request']+self.shell_handlers.keys(): |
|
105 | 105 | self.control_handlers[msg_type] = getattr(self, msg_type) |
|
106 | 106 | |
|
107 | 107 | self._initial_exec_lines() |
|
108 | 108 | |
|
109 | 109 | def _wrap_exception(self, method=None): |
|
110 | 110 | e_info = dict(engine_uuid=self.ident, engine_id=self.int_id, method=method) |
|
111 | 111 | content=wrap_exception(e_info) |
|
112 | 112 | return content |
|
113 | 113 | |
|
114 | 114 | def _initial_exec_lines(self): |
|
115 | 115 | s = _Passer() |
|
116 | 116 | content = dict(silent=True, user_variable=[],user_expressions=[]) |
|
117 | 117 | for line in self.exec_lines: |
|
118 | 118 | self.log.debug("executing initialization: %s"%line) |
|
119 | 119 | content.update({'code':line}) |
|
120 | 120 | msg = self.session.msg('execute_request', content) |
|
121 | 121 | self.execute_request(s, [], msg) |
|
122 | 122 | |
|
123 | 123 | |
|
124 | 124 | #-------------------- control handlers ----------------------------- |
|
125 | 125 | def abort_queues(self): |
|
126 | 126 | for stream in self.shell_streams: |
|
127 | 127 | if stream: |
|
128 | 128 | self.abort_queue(stream) |
|
129 | 129 | |
|
130 | 130 | def abort_queue(self, stream): |
|
131 | 131 | while True: |
|
132 | 132 | try: |
|
133 | 133 | msg = self.session.recv(stream, zmq.NOBLOCK,content=True) |
|
134 | 134 | except zmq.ZMQError as e: |
|
135 | 135 | if e.errno == zmq.EAGAIN: |
|
136 | 136 | break |
|
137 | 137 | else: |
|
138 | 138 | return |
|
139 | 139 | else: |
|
140 | 140 | if msg is None: |
|
141 | 141 | return |
|
142 | 142 | else: |
|
143 | 143 | idents,msg = msg |
|
144 | 144 | |
|
145 | 145 | # assert self.reply_socketly_socket.rcvmore(), "Unexpected missing message part." |
|
146 | 146 | # msg = self.reply_socket.recv_json() |
|
147 | 147 | self.log.info("Aborting:") |
|
148 | 148 | self.log.info(str(msg)) |
|
149 | 149 | msg_type = msg['msg_type'] |
|
150 | 150 | reply_type = msg_type.split('_')[0] + '_reply' |
|
151 | 151 | # reply_msg = self.session.msg(reply_type, {'status' : 'aborted'}, msg) |
|
152 | 152 | # self.reply_socket.send(ident,zmq.SNDMORE) |
|
153 | 153 | # self.reply_socket.send_json(reply_msg) |
|
154 | 154 | reply_msg = self.session.send(stream, reply_type, |
|
155 | 155 | content={'status' : 'aborted'}, parent=msg, ident=idents)[0] |
|
156 | 156 | self.log.debug(str(reply_msg)) |
|
157 | 157 | # We need to wait a bit for requests to come in. This can probably |
|
158 | 158 | # be set shorter for true asynchronous clients. |
|
159 | 159 | time.sleep(0.05) |
|
160 | 160 | |
|
161 | 161 | def abort_request(self, stream, ident, parent): |
|
162 | 162 | """abort a specifig msg by id""" |
|
163 | 163 | msg_ids = parent['content'].get('msg_ids', None) |
|
164 | 164 | if isinstance(msg_ids, basestring): |
|
165 | 165 | msg_ids = [msg_ids] |
|
166 | 166 | if not msg_ids: |
|
167 | 167 | self.abort_queues() |
|
168 | 168 | for mid in msg_ids: |
|
169 | 169 | self.aborted.add(str(mid)) |
|
170 | 170 | |
|
171 | 171 | content = dict(status='ok') |
|
172 | 172 | reply_msg = self.session.send(stream, 'abort_reply', content=content, |
|
173 | 173 | parent=parent, ident=ident) |
|
174 | 174 | self.log.debug(str(reply_msg)) |
|
175 | 175 | |
|
176 | 176 | def shutdown_request(self, stream, ident, parent): |
|
177 | 177 | """kill ourself. This should really be handled in an external process""" |
|
178 | 178 | try: |
|
179 | 179 | self.abort_queues() |
|
180 | 180 | except: |
|
181 | 181 | content = self._wrap_exception('shutdown') |
|
182 | 182 | else: |
|
183 | 183 | content = dict(parent['content']) |
|
184 | 184 | content['status'] = 'ok' |
|
185 | 185 | msg = self.session.send(stream, 'shutdown_reply', |
|
186 | 186 | content=content, parent=parent, ident=ident) |
|
187 | 187 | self.log.debug(str(msg)) |
|
188 | 188 | dc = ioloop.DelayedCallback(lambda : sys.exit(0), 1000, self.loop) |
|
189 | 189 | dc.start() |
|
190 | 190 | |
|
191 | 191 | def dispatch_control(self, msg): |
|
192 | 192 | idents,msg = self.session.feed_identities(msg, copy=False) |
|
193 | 193 | try: |
|
194 | 194 | msg = self.session.unpack_message(msg, content=True, copy=False) |
|
195 | 195 | except: |
|
196 | 196 | self.log.error("Invalid Message", exc_info=True) |
|
197 | 197 | return |
|
198 | 198 | |
|
199 | 199 | header = msg['header'] |
|
200 | 200 | msg_id = header['msg_id'] |
|
201 | 201 | |
|
202 | 202 | handler = self.control_handlers.get(msg['msg_type'], None) |
|
203 | 203 | if handler is None: |
|
204 | 204 | self.log.error("UNKNOWN CONTROL MESSAGE TYPE: %r"%msg['msg_type']) |
|
205 | 205 | else: |
|
206 | 206 | handler(self.control_stream, idents, msg) |
|
207 | 207 | |
|
208 | 208 | |
|
209 | 209 | #-------------------- queue helpers ------------------------------ |
|
210 | 210 | |
|
211 | 211 | def check_dependencies(self, dependencies): |
|
212 | 212 | if not dependencies: |
|
213 | 213 | return True |
|
214 | 214 | if len(dependencies) == 2 and dependencies[0] in 'any all'.split(): |
|
215 | 215 | anyorall = dependencies[0] |
|
216 | 216 | dependencies = dependencies[1] |
|
217 | 217 | else: |
|
218 | 218 | anyorall = 'all' |
|
219 | 219 | results = self.client.get_results(dependencies,status_only=True) |
|
220 | 220 | if results['status'] != 'ok': |
|
221 | 221 | return False |
|
222 | 222 | |
|
223 | 223 | if anyorall == 'any': |
|
224 | 224 | if not results['completed']: |
|
225 | 225 | return False |
|
226 | 226 | else: |
|
227 | 227 | if results['pending']: |
|
228 | 228 | return False |
|
229 | 229 | |
|
230 | 230 | return True |
|
231 | 231 | |
|
232 | 232 | def check_aborted(self, msg_id): |
|
233 | 233 | return msg_id in self.aborted |
|
234 | 234 | |
|
235 | 235 | #-------------------- queue handlers ----------------------------- |
|
236 | 236 | |
|
237 | 237 | def clear_request(self, stream, idents, parent): |
|
238 | 238 | """Clear our namespace.""" |
|
239 | 239 | self.user_ns = {} |
|
240 | 240 | msg = self.session.send(stream, 'clear_reply', ident=idents, parent=parent, |
|
241 | 241 | content = dict(status='ok')) |
|
242 | 242 | self._initial_exec_lines() |
|
243 | 243 | |
|
244 | 244 | def execute_request(self, stream, ident, parent): |
|
245 | 245 | self.log.debug('execute request %s'%parent) |
|
246 | 246 | try: |
|
247 | 247 | code = parent[u'content'][u'code'] |
|
248 | 248 | except: |
|
249 | 249 | self.log.error("Got bad msg: %s"%parent, exc_info=True) |
|
250 | 250 | return |
|
251 | 251 | self.session.send(self.iopub_stream, u'pyin', {u'code':code},parent=parent, |
|
252 | 252 | ident='%s.pyin'%self.prefix) |
|
253 | 253 | started = datetime.now().strftime(ISO8601) |
|
254 | 254 | try: |
|
255 | 255 | comp_code = self.compiler(code, '<zmq-kernel>') |
|
256 | 256 | # allow for not overriding displayhook |
|
257 | 257 | if hasattr(sys.displayhook, 'set_parent'): |
|
258 | 258 | sys.displayhook.set_parent(parent) |
|
259 | 259 | sys.stdout.set_parent(parent) |
|
260 | 260 | sys.stderr.set_parent(parent) |
|
261 | 261 | exec comp_code in self.user_ns, self.user_ns |
|
262 | 262 | except: |
|
263 | 263 | exc_content = self._wrap_exception('execute') |
|
264 | 264 | # exc_msg = self.session.msg(u'pyerr', exc_content, parent) |
|
265 | 265 | self.session.send(self.iopub_stream, u'pyerr', exc_content, parent=parent, |
|
266 | 266 | ident='%s.pyerr'%self.prefix) |
|
267 | 267 | reply_content = exc_content |
|
268 | 268 | else: |
|
269 | 269 | reply_content = {'status' : 'ok'} |
|
270 | 270 | |
|
271 | 271 | reply_msg = self.session.send(stream, u'execute_reply', reply_content, parent=parent, |
|
272 | 272 | ident=ident, subheader = dict(started=started)) |
|
273 | 273 | self.log.debug(str(reply_msg)) |
|
274 | 274 | if reply_msg['content']['status'] == u'error': |
|
275 | 275 | self.abort_queues() |
|
276 | 276 | |
|
277 | 277 | def complete_request(self, stream, ident, parent): |
|
278 | 278 | matches = {'matches' : self.complete(parent), |
|
279 | 279 | 'status' : 'ok'} |
|
280 | 280 | completion_msg = self.session.send(stream, 'complete_reply', |
|
281 | 281 | matches, parent, ident) |
|
282 | 282 | # print >> sys.__stdout__, completion_msg |
|
283 | 283 | |
|
284 | 284 | def complete(self, msg): |
|
285 | 285 | return self.completer.complete(msg.content.line, msg.content.text) |
|
286 | 286 | |
|
287 | 287 | def apply_request(self, stream, ident, parent): |
|
288 | 288 | # flush previous reply, so this request won't block it |
|
289 | 289 | stream.flush(zmq.POLLOUT) |
|
290 | 290 | |
|
291 | 291 | try: |
|
292 | 292 | content = parent[u'content'] |
|
293 | 293 | bufs = parent[u'buffers'] |
|
294 | 294 | msg_id = parent['header']['msg_id'] |
|
295 | 295 | # bound = parent['header'].get('bound', False) |
|
296 | 296 | except: |
|
297 | 297 | self.log.error("Got bad msg: %s"%parent, exc_info=True) |
|
298 | 298 | return |
|
299 | 299 | # pyin_msg = self.session.msg(u'pyin',{u'code':code}, parent=parent) |
|
300 | 300 | # self.iopub_stream.send(pyin_msg) |
|
301 | 301 | # self.session.send(self.iopub_stream, u'pyin', {u'code':code},parent=parent) |
|
302 | 302 | sub = {'dependencies_met' : True, 'engine' : self.ident, |
|
303 | 303 | 'started': datetime.now().strftime(ISO8601)} |
|
304 | 304 | try: |
|
305 | 305 | # allow for not overriding displayhook |
|
306 | 306 | if hasattr(sys.displayhook, 'set_parent'): |
|
307 | 307 | sys.displayhook.set_parent(parent) |
|
308 | 308 | sys.stdout.set_parent(parent) |
|
309 | 309 | sys.stderr.set_parent(parent) |
|
310 | 310 | # exec "f(*args,**kwargs)" in self.user_ns, self.user_ns |
|
311 | 311 | working = self.user_ns |
|
312 | 312 | # suffix = |
|
313 | 313 | prefix = "_"+str(msg_id).replace("-","")+"_" |
|
314 | 314 | |
|
315 | 315 | f,args,kwargs = unpack_apply_message(bufs, working, copy=False) |
|
316 | 316 | # if bound: |
|
317 | 317 | # bound_ns = Namespace(working) |
|
318 | 318 | # args = [bound_ns]+list(args) |
|
319 | 319 | |
|
320 | 320 | fname = getattr(f, '__name__', 'f') |
|
321 | 321 | |
|
322 | 322 | fname = prefix+"f" |
|
323 | 323 | argname = prefix+"args" |
|
324 | 324 | kwargname = prefix+"kwargs" |
|
325 | 325 | resultname = prefix+"result" |
|
326 | 326 | |
|
327 | 327 | ns = { fname : f, argname : args, kwargname : kwargs , resultname : None } |
|
328 | 328 | # print ns |
|
329 | 329 | working.update(ns) |
|
330 | 330 | code = "%s=%s(*%s,**%s)"%(resultname, fname, argname, kwargname) |
|
331 | 331 | try: |
|
332 | 332 | exec code in working,working |
|
333 | 333 | result = working.get(resultname) |
|
334 | 334 | finally: |
|
335 | 335 | for key in ns.iterkeys(): |
|
336 | 336 | working.pop(key) |
|
337 | 337 | # if bound: |
|
338 | 338 | # working.update(bound_ns) |
|
339 | 339 | |
|
340 | 340 | packed_result,buf = serialize_object(result) |
|
341 | 341 | result_buf = [packed_result]+buf |
|
342 | 342 | except: |
|
343 | 343 | exc_content = self._wrap_exception('apply') |
|
344 | 344 | # exc_msg = self.session.msg(u'pyerr', exc_content, parent) |
|
345 | 345 | self.session.send(self.iopub_stream, u'pyerr', exc_content, parent=parent, |
|
346 | 346 | ident='%s.pyerr'%self.prefix) |
|
347 | 347 | reply_content = exc_content |
|
348 | 348 | result_buf = [] |
|
349 | 349 | |
|
350 | 350 | if exc_content['ename'] == 'UnmetDependency': |
|
351 | 351 | sub['dependencies_met'] = False |
|
352 | 352 | else: |
|
353 | 353 | reply_content = {'status' : 'ok'} |
|
354 | 354 | |
|
355 | 355 | # put 'ok'/'error' status in header, for scheduler introspection: |
|
356 | 356 | sub['status'] = reply_content['status'] |
|
357 | 357 | |
|
358 | 358 | reply_msg = self.session.send(stream, u'apply_reply', reply_content, |
|
359 | 359 | parent=parent, ident=ident,buffers=result_buf, subheader=sub) |
|
360 | 360 | |
|
361 | 361 | # flush i/o |
|
362 | 362 | # should this be before reply_msg is sent, like in the single-kernel code, |
|
363 | 363 | # or should nothing get in the way of real results? |
|
364 | 364 | sys.stdout.flush() |
|
365 | 365 | sys.stderr.flush() |
|
366 | 366 | |
|
367 | 367 | def dispatch_queue(self, stream, msg): |
|
368 | 368 | self.control_stream.flush() |
|
369 | 369 | idents,msg = self.session.feed_identities(msg, copy=False) |
|
370 | 370 | try: |
|
371 | 371 | msg = self.session.unpack_message(msg, content=True, copy=False) |
|
372 | 372 | except: |
|
373 | 373 | self.log.error("Invalid Message", exc_info=True) |
|
374 | 374 | return |
|
375 | 375 | |
|
376 | 376 | |
|
377 | 377 | header = msg['header'] |
|
378 | 378 | msg_id = header['msg_id'] |
|
379 | 379 | if self.check_aborted(msg_id): |
|
380 | 380 | self.aborted.remove(msg_id) |
|
381 | 381 | # is it safe to assume a msg_id will not be resubmitted? |
|
382 | 382 | reply_type = msg['msg_type'].split('_')[0] + '_reply' |
|
383 | reply_msg = self.session.send(stream, reply_type, | |
|
384 | content={'status' : 'aborted'}, parent=msg, ident=idents) | |
|
383 | status = {'status' : 'aborted'} | |
|
384 | reply_msg = self.session.send(stream, reply_type, subheader=status, | |
|
385 | content=status, parent=msg, ident=idents) | |
|
385 | 386 | return |
|
386 | 387 | handler = self.shell_handlers.get(msg['msg_type'], None) |
|
387 | 388 | if handler is None: |
|
388 | 389 | self.log.error("UNKNOWN MESSAGE TYPE: %r"%msg['msg_type']) |
|
389 | 390 | else: |
|
390 | 391 | handler(stream, idents, msg) |
|
391 | 392 | |
|
392 | 393 | def start(self): |
|
393 | 394 | #### stream mode: |
|
394 | 395 | if self.control_stream: |
|
395 | 396 | self.control_stream.on_recv(self.dispatch_control, copy=False) |
|
396 | 397 | self.control_stream.on_err(printer) |
|
397 | 398 | |
|
398 | 399 | def make_dispatcher(stream): |
|
399 | 400 | def dispatcher(msg): |
|
400 | 401 | return self.dispatch_queue(stream, msg) |
|
401 | 402 | return dispatcher |
|
402 | 403 | |
|
403 | 404 | for s in self.shell_streams: |
|
404 | 405 | s.on_recv(make_dispatcher(s), copy=False) |
|
405 | 406 | s.on_err(printer) |
|
406 | 407 | |
|
407 | 408 | if self.iopub_stream: |
|
408 | 409 | self.iopub_stream.on_err(printer) |
|
409 | 410 | |
|
410 | 411 | #### while True mode: |
|
411 | 412 | # while True: |
|
412 | 413 | # idle = True |
|
413 | 414 | # try: |
|
414 | 415 | # msg = self.shell_stream.socket.recv_multipart( |
|
415 | 416 | # zmq.NOBLOCK, copy=False) |
|
416 | 417 | # except zmq.ZMQError, e: |
|
417 | 418 | # if e.errno != zmq.EAGAIN: |
|
418 | 419 | # raise e |
|
419 | 420 | # else: |
|
420 | 421 | # idle=False |
|
421 | 422 | # self.dispatch_queue(self.shell_stream, msg) |
|
422 | 423 | # |
|
423 | 424 | # if not self.task_stream.empty(): |
|
424 | 425 | # idle=False |
|
425 | 426 | # msg = self.task_stream.recv_multipart() |
|
426 | 427 | # self.dispatch_queue(self.task_stream, msg) |
|
427 | 428 | # if idle: |
|
428 | 429 | # # don't busywait |
|
429 | 430 | # time.sleep(1e-3) |
|
430 | 431 |
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