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@@ -1,450 +1,463 b'' | |||
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1 | 1 | #!/usr/bin/env python |
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2 | 2 | # encoding: utf-8 |
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3 | 3 | """ |
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4 | 4 | The IPython cluster directory |
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5 | 5 | """ |
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6 | 6 | |
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7 | 7 | #----------------------------------------------------------------------------- |
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8 | 8 | # Copyright (C) 2008-2009 The IPython Development Team |
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9 | 9 | # |
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10 | 10 | # Distributed under the terms of the BSD License. The full license is in |
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11 | 11 | # the file COPYING, distributed as part of this software. |
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12 | 12 | #----------------------------------------------------------------------------- |
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13 | 13 | |
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14 | 14 | #----------------------------------------------------------------------------- |
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15 | 15 | # Imports |
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16 | 16 | #----------------------------------------------------------------------------- |
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17 | 17 | |
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18 | 18 | from __future__ import with_statement |
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19 | 19 | |
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20 | 20 | import os |
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21 | 21 | import shutil |
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22 | 22 | import sys |
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23 | import warnings | |
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23 | 24 | |
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24 | 25 | from twisted.python import log |
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25 | 26 | |
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26 | 27 | from IPython.core import release |
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27 | 28 | from IPython.config.loader import PyFileConfigLoader |
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28 | 29 | from IPython.core.application import Application |
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29 | 30 | from IPython.core.component import Component |
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31 | from IPython.utils.genutils import get_ipython_dir, get_ipython_package_dir | |
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30 | 32 | from IPython.utils.traitlets import Unicode, Bool |
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31 | 33 | from IPython.utils import genutils |
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32 | 34 | |
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33 | 35 | #----------------------------------------------------------------------------- |
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34 | # Imports | |
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36 | # Warnings control | |
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35 | 37 | #----------------------------------------------------------------------------- |
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38 | # Twisted generates annoying warnings with Python 2.6, as will do other code | |
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39 | # that imports 'sets' as of today | |
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40 | warnings.filterwarnings('ignore', 'the sets module is deprecated', | |
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41 | DeprecationWarning ) | |
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36 | 42 | |
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43 | # This one also comes from Twisted | |
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44 | warnings.filterwarnings('ignore', 'the sha module is deprecated', | |
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45 | DeprecationWarning) | |
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46 | ||
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47 | #----------------------------------------------------------------------------- | |
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48 | # Classes and functions | |
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49 | #----------------------------------------------------------------------------- | |
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37 | 50 | |
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38 | 51 | class ClusterDirError(Exception): |
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39 | 52 | pass |
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40 | 53 | |
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41 | 54 | |
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42 | 55 | class PIDFileError(Exception): |
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43 | 56 | pass |
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44 | 57 | |
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45 | 58 | |
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46 | 59 | class ClusterDir(Component): |
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47 | 60 | """An object to manage the cluster directory and its resources. |
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48 | 61 | |
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49 | 62 | The cluster directory is used by :command:`ipcontroller`, |
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50 | 63 | :command:`ipcontroller` and :command:`ipcontroller` to manage the |
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51 | 64 | configuration, logging and security of these applications. |
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52 | 65 | |
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53 | 66 | This object knows how to find, create and manage these directories. This |
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54 | 67 | should be used by any code that want's to handle cluster directories. |
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55 | 68 | """ |
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56 | 69 | |
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57 | 70 | security_dir_name = Unicode('security') |
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58 | 71 | log_dir_name = Unicode('log') |
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59 | 72 | pid_dir_name = Unicode('pid') |
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60 | 73 | security_dir = Unicode(u'') |
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61 | 74 | log_dir = Unicode(u'') |
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62 | 75 | pid_dir = Unicode(u'') |
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63 | 76 | location = Unicode(u'') |
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64 | 77 | |
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65 | 78 | def __init__(self, location): |
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66 | 79 | super(ClusterDir, self).__init__(None) |
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67 | 80 | self.location = location |
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68 | 81 | |
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69 | 82 | def _location_changed(self, name, old, new): |
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70 | 83 | if not os.path.isdir(new): |
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71 | 84 | os.makedirs(new) |
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72 | 85 | self.security_dir = os.path.join(new, self.security_dir_name) |
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73 | 86 | self.log_dir = os.path.join(new, self.log_dir_name) |
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74 | 87 | self.pid_dir = os.path.join(new, self.pid_dir_name) |
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75 | 88 | self.check_dirs() |
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76 | 89 | |
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77 | 90 | def _log_dir_changed(self, name, old, new): |
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78 | 91 | self.check_log_dir() |
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79 | 92 | |
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80 | 93 | def check_log_dir(self): |
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81 | 94 | if not os.path.isdir(self.log_dir): |
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82 | 95 | os.mkdir(self.log_dir) |
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83 | 96 | |
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84 | 97 | def _security_dir_changed(self, name, old, new): |
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85 | 98 | self.check_security_dir() |
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86 | 99 | |
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87 | 100 | def check_security_dir(self): |
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88 | 101 | if not os.path.isdir(self.security_dir): |
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89 | 102 | os.mkdir(self.security_dir, 0700) |
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90 | 103 | os.chmod(self.security_dir, 0700) |
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91 | 104 | |
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92 | 105 | def _pid_dir_changed(self, name, old, new): |
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93 | 106 | self.check_pid_dir() |
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94 | 107 | |
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95 | 108 | def check_pid_dir(self): |
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96 | 109 | if not os.path.isdir(self.pid_dir): |
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97 | 110 | os.mkdir(self.pid_dir, 0700) |
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98 | 111 | os.chmod(self.pid_dir, 0700) |
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99 | 112 | |
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100 | 113 | def check_dirs(self): |
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101 | 114 | self.check_security_dir() |
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102 | 115 | self.check_log_dir() |
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103 | 116 | self.check_pid_dir() |
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104 | 117 | |
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105 | 118 | def load_config_file(self, filename): |
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106 | 119 | """Load a config file from the top level of the cluster dir. |
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107 | 120 | |
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108 | 121 | Parameters |
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109 | 122 | ---------- |
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110 | 123 | filename : unicode or str |
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111 | 124 | The filename only of the config file that must be located in |
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112 | 125 | the top-level of the cluster directory. |
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113 | 126 | """ |
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114 | 127 | loader = PyFileConfigLoader(filename, self.location) |
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115 | 128 | return loader.load_config() |
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116 | 129 | |
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117 | 130 | def copy_config_file(self, config_file, path=None, overwrite=False): |
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118 | 131 | """Copy a default config file into the active cluster directory. |
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119 | 132 | |
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120 | 133 | Default configuration files are kept in :mod:`IPython.config.default`. |
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121 | 134 | This function moves these from that location to the working cluster |
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122 | 135 | directory. |
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123 | 136 | """ |
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124 | 137 | if path is None: |
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125 | 138 | import IPython.config.default |
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126 | 139 | path = IPython.config.default.__file__.split(os.path.sep)[:-1] |
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127 | 140 | path = os.path.sep.join(path) |
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128 | 141 | src = os.path.join(path, config_file) |
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129 | 142 | dst = os.path.join(self.location, config_file) |
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130 | 143 | if not os.path.isfile(dst) or overwrite: |
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131 | 144 | shutil.copy(src, dst) |
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132 | 145 | |
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133 | 146 | def copy_all_config_files(self, path=None, overwrite=False): |
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134 | 147 | """Copy all config files into the active cluster directory.""" |
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135 | 148 | for f in [u'ipcontroller_config.py', u'ipengine_config.py', |
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136 | 149 | u'ipcluster_config.py']: |
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137 | 150 | self.copy_config_file(f, path=path, overwrite=overwrite) |
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138 | 151 | |
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139 | 152 | @classmethod |
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140 | 153 | def create_cluster_dir(csl, cluster_dir): |
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141 | 154 | """Create a new cluster directory given a full path. |
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142 | 155 | |
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143 | 156 | Parameters |
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144 | 157 | ---------- |
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145 | 158 | cluster_dir : str |
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146 | 159 | The full path to the cluster directory. If it does exist, it will |
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147 | 160 | be used. If not, it will be created. |
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148 | 161 | """ |
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149 | 162 | return ClusterDir(cluster_dir) |
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150 | 163 | |
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151 | 164 | @classmethod |
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152 | 165 | def create_cluster_dir_by_profile(cls, path, profile=u'default'): |
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153 | 166 | """Create a cluster dir by profile name and path. |
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154 | 167 | |
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155 | 168 | Parameters |
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156 | 169 | ---------- |
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157 | 170 | path : str |
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158 | 171 | The path (directory) to put the cluster directory in. |
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159 | 172 | profile : str |
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160 | 173 | The name of the profile. The name of the cluster directory will |
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161 | 174 | be "cluster_<profile>". |
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162 | 175 | """ |
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163 | 176 | if not os.path.isdir(path): |
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164 | 177 | raise ClusterDirError('Directory not found: %s' % path) |
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165 | 178 | cluster_dir = os.path.join(path, u'cluster_' + profile) |
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166 | 179 | return ClusterDir(cluster_dir) |
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167 | 180 | |
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168 | 181 | @classmethod |
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169 | 182 | def find_cluster_dir_by_profile(cls, ipython_dir, profile=u'default'): |
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170 | 183 | """Find an existing cluster dir by profile name, return its ClusterDir. |
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171 | 184 | |
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172 | 185 | This searches through a sequence of paths for a cluster dir. If it |
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173 | 186 | is not found, a :class:`ClusterDirError` exception will be raised. |
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174 | 187 | |
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175 | 188 | The search path algorithm is: |
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176 | 189 | 1. ``os.getcwd()`` |
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177 | 190 | 2. ``ipython_dir`` |
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178 | 191 | 3. The directories found in the ":" separated |
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179 | 192 | :env:`IPCLUSTER_DIR_PATH` environment variable. |
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180 | 193 | |
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181 | 194 | Parameters |
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182 | 195 | ---------- |
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183 | 196 | ipython_dir : unicode or str |
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184 | 197 | The IPython directory to use. |
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185 | 198 | profile : unicode or str |
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186 | 199 | The name of the profile. The name of the cluster directory |
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187 | 200 | will be "cluster_<profile>". |
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188 | 201 | """ |
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189 | 202 | dirname = u'cluster_' + profile |
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190 | 203 | cluster_dir_paths = os.environ.get('IPCLUSTER_DIR_PATH','') |
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191 | 204 | if cluster_dir_paths: |
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192 | 205 | cluster_dir_paths = cluster_dir_paths.split(':') |
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193 | 206 | else: |
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194 | 207 | cluster_dir_paths = [] |
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195 | 208 | paths = [os.getcwd(), ipython_dir] + cluster_dir_paths |
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196 | 209 | for p in paths: |
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197 | 210 | cluster_dir = os.path.join(p, dirname) |
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198 | 211 | if os.path.isdir(cluster_dir): |
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199 | 212 | return ClusterDir(cluster_dir) |
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200 | 213 | else: |
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201 | 214 | raise ClusterDirError('Cluster directory not found in paths: %s' % dirname) |
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202 | 215 | |
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203 | 216 | @classmethod |
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204 | 217 | def find_cluster_dir(cls, cluster_dir): |
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205 | 218 | """Find/create a cluster dir and return its ClusterDir. |
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206 | 219 | |
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207 | 220 | This will create the cluster directory if it doesn't exist. |
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208 | 221 | |
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209 | 222 | Parameters |
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210 | 223 | ---------- |
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211 | 224 | cluster_dir : unicode or str |
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212 | 225 | The path of the cluster directory. This is expanded using |
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213 | 226 | :func:`IPython.utils.genutils.expand_path`. |
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214 | 227 | """ |
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215 | 228 | cluster_dir = genutils.expand_path(cluster_dir) |
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216 | 229 | if not os.path.isdir(cluster_dir): |
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217 | 230 | raise ClusterDirError('Cluster directory not found: %s' % cluster_dir) |
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218 | 231 | return ClusterDir(cluster_dir) |
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219 | 232 | |
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220 | 233 | |
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221 | 234 | # Default command line options for IPython cluster applications. |
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222 | 235 | cl_args = ( |
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223 | 236 | (('--ipython-dir',), dict( |
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224 | 237 | dest='Global.ipython_dir',type=unicode, |
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225 | 238 | help='Set to override default location of Global.ipython_dir.', |
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226 | 239 | metavar='Global.ipython_dir') ), |
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227 | 240 | (('-p', '--profile',), dict( |
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228 | 241 | dest='Global.profile',type=unicode, |
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229 | 242 | help= |
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230 | 243 | """The string name of the profile to be used. This determines the name |
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231 | 244 | of the cluster dir as: cluster_<profile>. The default profile is named |
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232 | 245 | 'default'. The cluster directory is resolve this way if the |
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233 | 246 | --cluster-dir option is not used.""", |
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234 | 247 | metavar='Global.profile') ), |
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235 | 248 | (('--cluster-dir',), dict( |
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236 | 249 | dest='Global.cluster_dir',type=unicode, |
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237 | 250 | help="""Set the cluster dir. This overrides the logic used by the |
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238 | 251 | --profile option.""", |
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239 | 252 | metavar='Global.cluster_dir') ), |
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240 | 253 | (('--work-dir',), dict( |
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241 | 254 | dest='Global.work_dir',type=unicode, |
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242 | 255 | help='Set the working dir for the process.', |
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243 | 256 | metavar='Global.work_dir') ), |
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244 | 257 | (('--clean-logs',), dict( |
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245 | 258 | dest='Global.clean_logs', action='store_true', |
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246 | 259 | help='Delete old log flies before starting.') ), |
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247 | 260 | (('--no-clean-logs',), dict( |
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248 | 261 | dest='Global.clean_logs', action='store_false', |
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249 | 262 | help="Don't Delete old log flies before starting.") ), |
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250 | 263 | ) |
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251 | 264 | |
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252 | 265 | |
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253 | 266 | class ApplicationWithClusterDir(Application): |
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254 | 267 | """An application that puts everything into a cluster directory. |
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255 | 268 | |
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256 | 269 | Instead of looking for things in the ipython_dir, this type of application |
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257 | 270 | will use its own private directory called the "cluster directory" |
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258 | 271 | for things like config files, log files, etc. |
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259 | 272 | |
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260 | 273 | The cluster directory is resolved as follows: |
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261 | 274 | |
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262 | 275 | * If the ``--cluster-dir`` option is given, it is used. |
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263 | 276 | * If ``--cluster-dir`` is not given, the application directory is |
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264 | 277 | resolve using the profile name as ``cluster_<profile>``. The search |
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265 | 278 | path for this directory is then i) cwd if it is found there |
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266 | 279 | and ii) in ipython_dir otherwise. |
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267 | 280 | |
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268 | 281 | The config file for the application is to be put in the cluster |
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269 | 282 | dir and named the value of the ``config_file_name`` class attribute. |
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270 | 283 | """ |
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271 | 284 | |
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272 | 285 | auto_create_cluster_dir = True |
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273 | 286 | |
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274 | 287 | cl_arguments = Application.cl_arguments + cl_args |
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275 | 288 | |
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276 | 289 | def create_default_config(self): |
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277 | 290 | super(ApplicationWithClusterDir, self).create_default_config() |
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278 | 291 | self.default_config.Global.profile = u'default' |
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279 | 292 | self.default_config.Global.cluster_dir = u'' |
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280 | 293 | self.default_config.Global.work_dir = os.getcwd() |
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281 | 294 | self.default_config.Global.log_to_file = False |
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282 | 295 | self.default_config.Global.clean_logs = False |
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283 | 296 | |
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284 | 297 | def find_resources(self): |
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285 | 298 | """This resolves the cluster directory. |
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286 | 299 | |
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287 | 300 | This tries to find the cluster directory and if successful, it will |
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288 | 301 | have done: |
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289 | 302 | * Sets ``self.cluster_dir_obj`` to the :class:`ClusterDir` object for |
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290 | 303 | the application. |
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291 | 304 | * Sets ``self.cluster_dir`` attribute of the application and config |
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292 | 305 | objects. |
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293 | 306 | |
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294 | 307 | The algorithm used for this is as follows: |
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295 | 308 | 1. Try ``Global.cluster_dir``. |
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296 | 309 | 2. Try using ``Global.profile``. |
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297 | 310 | 3. If both of these fail and ``self.auto_create_cluster_dir`` is |
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298 | 311 | ``True``, then create the new cluster dir in the IPython directory. |
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299 | 312 | 4. If all fails, then raise :class:`ClusterDirError`. |
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300 | 313 | """ |
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301 | 314 | |
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302 | 315 | try: |
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303 | 316 | cluster_dir = self.command_line_config.Global.cluster_dir |
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304 | 317 | except AttributeError: |
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305 | 318 | cluster_dir = self.default_config.Global.cluster_dir |
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306 | 319 | cluster_dir = genutils.expand_path(cluster_dir) |
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307 | 320 | try: |
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308 | 321 | self.cluster_dir_obj = ClusterDir.find_cluster_dir(cluster_dir) |
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309 | 322 | except ClusterDirError: |
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310 | 323 | pass |
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311 | 324 | else: |
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312 | 325 | self.log.info('Using existing cluster dir: %s' % \ |
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313 | 326 | self.cluster_dir_obj.location |
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314 | 327 | ) |
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315 | 328 | self.finish_cluster_dir() |
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316 | 329 | return |
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317 | 330 | |
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318 | 331 | try: |
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319 | 332 | self.profile = self.command_line_config.Global.profile |
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320 | 333 | except AttributeError: |
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321 | 334 | self.profile = self.default_config.Global.profile |
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322 | 335 | try: |
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323 | 336 | self.cluster_dir_obj = ClusterDir.find_cluster_dir_by_profile( |
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324 | 337 | self.ipython_dir, self.profile) |
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325 | 338 | except ClusterDirError: |
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326 | 339 | pass |
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327 | 340 | else: |
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328 | 341 | self.log.info('Using existing cluster dir: %s' % \ |
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329 | 342 | self.cluster_dir_obj.location |
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330 | 343 | ) |
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331 | 344 | self.finish_cluster_dir() |
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332 | 345 | return |
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333 | 346 | |
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334 | 347 | if self.auto_create_cluster_dir: |
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335 | 348 | self.cluster_dir_obj = ClusterDir.create_cluster_dir_by_profile( |
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336 | 349 | self.ipython_dir, self.profile |
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337 | 350 | ) |
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338 | 351 | self.log.info('Creating new cluster dir: %s' % \ |
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339 | 352 | self.cluster_dir_obj.location |
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340 | 353 | ) |
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341 | 354 | self.finish_cluster_dir() |
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342 | 355 | else: |
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343 | 356 | raise ClusterDirError('Could not find a valid cluster directory.') |
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344 | 357 | |
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345 | 358 | def finish_cluster_dir(self): |
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346 | 359 | # Set the cluster directory |
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347 | 360 | self.cluster_dir = self.cluster_dir_obj.location |
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348 | 361 | |
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349 | 362 | # These have to be set because they could be different from the one |
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350 | 363 | # that we just computed. Because command line has the highest |
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351 | 364 | # priority, this will always end up in the master_config. |
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352 | 365 | self.default_config.Global.cluster_dir = self.cluster_dir |
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353 | 366 | self.command_line_config.Global.cluster_dir = self.cluster_dir |
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354 | 367 | |
|
355 | # Set the search path to the cluster directory | |
|
356 | self.config_file_paths = (self.cluster_dir,) | |
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357 | ||
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358 | 368 | def find_config_file_name(self): |
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359 | 369 | """Find the config file name for this application.""" |
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360 | 370 | # For this type of Application it should be set as a class attribute. |
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361 | 371 | if not hasattr(self, 'config_file_name'): |
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362 | 372 | self.log.critical("No config filename found") |
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363 | 373 | |
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364 | 374 | def find_config_file_paths(self): |
|
365 | # Set the search path to the cluster directory | |
|
366 | self.config_file_paths = (self.cluster_dir,) | |
|
375 | # Include our own config directory last, so that users can still find | |
|
376 | # our shipped copies of builtin config files even if they don't have | |
|
377 | # them in their ipython cluster directory. | |
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378 | conf_dir = os.path.join(get_ipython_package_dir(), 'config', 'default') | |
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379 | self.config_file_paths = (self.cluster_dir, conf_dir) | |
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367 | 380 | |
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368 | 381 | def pre_construct(self): |
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369 | 382 | # The log and security dirs were set earlier, but here we put them |
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370 | 383 | # into the config and log them. |
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371 | 384 | config = self.master_config |
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372 | 385 | sdir = self.cluster_dir_obj.security_dir |
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373 | 386 | self.security_dir = config.Global.security_dir = sdir |
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374 | 387 | ldir = self.cluster_dir_obj.log_dir |
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375 | 388 | self.log_dir = config.Global.log_dir = ldir |
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376 | 389 | pdir = self.cluster_dir_obj.pid_dir |
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377 | 390 | self.pid_dir = config.Global.pid_dir = pdir |
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378 | 391 | self.log.info("Cluster directory set to: %s" % self.cluster_dir) |
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379 | 392 | config.Global.work_dir = unicode(genutils.expand_path(config.Global.work_dir)) |
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380 | 393 | # Change to the working directory. We do this just before construct |
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381 | 394 | # is called so all the components there have the right working dir. |
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382 | 395 | self.to_work_dir() |
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383 | 396 | |
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384 | 397 | def to_work_dir(self): |
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385 | 398 | wd = self.master_config.Global.work_dir |
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386 | 399 | if unicode(wd) != unicode(os.getcwd()): |
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387 | 400 | os.chdir(wd) |
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388 | 401 | self.log.info("Changing to working dir: %s" % wd) |
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389 | 402 | |
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390 | 403 | def start_logging(self): |
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391 | 404 | # Remove old log files |
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392 | 405 | if self.master_config.Global.clean_logs: |
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393 | 406 | log_dir = self.master_config.Global.log_dir |
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394 | 407 | for f in os.listdir(log_dir): |
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395 | 408 | if f.startswith(self.name + u'-') and f.endswith('.log'): |
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396 | 409 | os.remove(os.path.join(log_dir, f)) |
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397 | 410 | # Start logging to the new log file |
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398 | 411 | if self.master_config.Global.log_to_file: |
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399 | 412 | log_filename = self.name + u'-' + str(os.getpid()) + u'.log' |
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400 | 413 | logfile = os.path.join(self.log_dir, log_filename) |
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401 | 414 | open_log_file = open(logfile, 'w') |
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402 | 415 | else: |
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403 | 416 | open_log_file = sys.stdout |
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404 | 417 | log.startLogging(open_log_file) |
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405 | 418 | |
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406 | 419 | def write_pid_file(self, overwrite=False): |
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407 | 420 | """Create a .pid file in the pid_dir with my pid. |
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408 | 421 | |
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409 | 422 | This must be called after pre_construct, which sets `self.pid_dir`. |
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410 | 423 | This raises :exc:`PIDFileError` if the pid file exists already. |
|
411 | 424 | """ |
|
412 | 425 | pid_file = os.path.join(self.pid_dir, self.name + u'.pid') |
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413 | 426 | if os.path.isfile(pid_file): |
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414 | 427 | pid = self.get_pid_from_file() |
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415 | 428 | if not overwrite: |
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416 | 429 | raise PIDFileError( |
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417 | 430 | 'The pid file [%s] already exists. \nThis could mean that this ' |
|
418 | 431 | 'server is already running with [pid=%s].' % (pid_file, pid) |
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419 | 432 | ) |
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420 | 433 | with open(pid_file, 'w') as f: |
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421 | 434 | self.log.info("Creating pid file: %s" % pid_file) |
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422 | 435 | f.write(repr(os.getpid())+'\n') |
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423 | 436 | |
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424 | 437 | def remove_pid_file(self): |
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425 | 438 | """Remove the pid file. |
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426 | 439 | |
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427 | 440 | This should be called at shutdown by registering a callback with |
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428 | 441 | :func:`reactor.addSystemEventTrigger`. This needs to return |
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429 | 442 | ``None``. |
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430 | 443 | """ |
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431 | 444 | pid_file = os.path.join(self.pid_dir, self.name + u'.pid') |
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432 | 445 | if os.path.isfile(pid_file): |
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433 | 446 | try: |
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434 | 447 | self.log.info("Removing pid file: %s" % pid_file) |
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435 | 448 | os.remove(pid_file) |
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436 | 449 | except: |
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437 | 450 | self.log.warn("Error removing the pid file: %s" % pid_file) |
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438 | 451 | |
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439 | 452 | def get_pid_from_file(self): |
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440 | 453 | """Get the pid from the pid file. |
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441 | 454 | |
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442 | 455 | If the pid file doesn't exist a :exc:`PIDFileError` is raised. |
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443 | 456 | """ |
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444 | 457 | pid_file = os.path.join(self.pid_dir, self.name + u'.pid') |
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445 | 458 | if os.path.isfile(pid_file): |
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446 | 459 | with open(pid_file, 'r') as f: |
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447 | 460 | pid = int(f.read().strip()) |
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448 | 461 | return pid |
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449 | 462 | else: |
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450 | 463 | raise PIDFileError('pid file not found: %s' % pid_file) |
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