Mercurial > p > roundup > code
annotate roundup/config.py @ 481:a261b0bbba43 config-0-4-0-branch
Fixed a number of minor syntax issues & error handling.
| author | Titus Brown <titus@users.sourceforge.net> |
|---|---|
| date | Thu, 03 Jan 2002 04:28:21 +0000 |
| parents | a5cd27d33516 |
| children | fdee2ff82b40 |
| rev | line source |
|---|---|
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1 import sys |
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2 import os |
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3 import ConfigParser |
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4 import string |
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5 |
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6 class Error(Exception): |
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7 pass |
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8 |
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9 def debug_mode(): |
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10 """ |
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11 Returns the basic debug mode/level. |
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12 """ |
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13 return os.environ.get('ROUNDUP_DEBUG', 0) |
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14 |
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15 def load_base_config(): |
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16 """ |
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17 Loads the base configuration for Roundup. |
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18 """ |
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19 |
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20 c = ConfigParser.ConfigParser() |
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21 |
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22 ## |
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23 ## CTB: this is where to search for all overrides, including |
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24 ## system-specific files, registry settings, etc. |
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25 ## |
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26 |
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27 # For the moment, search for the config file in |
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28 # |
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29 # %(sys.prefix)s/share/roundup/roundup.rc, |
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30 # |
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31 # with ROUNDUP_CONF overriding it. |
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32 |
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33 filenames_to_check = [] # list of files to check: |
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34 if os.environ.has_key('ROUNDUP_CONF'): |
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35 filenames_to_check.append(os.environ['ROUNDUP_CONF']) |
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36 |
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37 filenames_to_check.append('%s/share/roundup/roundup.rc'%(sys.prefix,)) |
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38 |
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39 for filename in filenames_to_check: |
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40 if os.path.exists(filename): |
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41 c.read(filename) |
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42 break |
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43 else: |
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44 raise Error("could not find configuration file") |
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45 |
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46 if debug_mode(): |
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47 print 'Loaded configuration from "%s".'%(filename,) |
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48 |
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49 # we also want to give a base path for other config file names; |
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50 # for the moment, make it the base path of the filename we chose. |
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51 base_path = os.path.dirname(filename) |
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52 |
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53 return BaseConfig(c, base_path) |
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54 |
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55 class BaseConfig: |
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56 """ |
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57 A container for the installation-wide roundup configuration. |
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58 """ |
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59 def __init__(self, c, base_path): |
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60 assert isinstance(c, ConfigParser.ConfigParser) |
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61 self.conf = c |
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62 self.base_path = base_path |
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63 |
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64 def get(self, group, attr): |
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65 return self.conf.get(group, attr) |
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66 |
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67 def load_instances_config(self): |
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68 filename = string.strip(self.conf.get('base', 'instances')) |
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69 |
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70 # if it looks like an absolute path, leave it alone; otherwise, |
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71 # add on the base path. |
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72 if filename[0] == '/' or filename[0] == '\\': |
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73 pass |
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74 else: |
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75 filename = os.path.normpath(self.base_path + '/' + filename) |
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76 |
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77 defaults_dictionary = { 'roundup_conf_dir' : self.base_path } |
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78 |
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79 c = ConfigParser.ConfigParser(defaults_dictionary) |
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80 c.read(filename) |
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81 |
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82 return InstancesConfig(c, filename) |
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83 |
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84 class InstancesConfig: |
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85 """ |
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86 A container for the installation-wide list of instances. |
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87 """ |
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88 def __init__(self, c, filename=""): |
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89 assert isinstance(c, ConfigParser.ConfigParser) |
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90 self.conf = c |
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91 self.filename = filename |
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92 |
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93 instance_names = {} |
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94 instance_dirs = {} |
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95 |
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96 for name in c.sections(): |
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97 dir = c.get(name, 'homedir') |
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98 |
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99 if instance_names.has_key(dir) or instance_dirs.has_key(name): |
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100 error_text = 'ERROR: dir/name correspondence is not unique (%s)'%(self.filename,) |
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101 raise ValueError(error_text) |
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102 |
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103 instance_dirs[name] = dir |
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104 instance_names[dir] = name |
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105 |
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106 self.instance_dirs = instance_dirs |
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107 self.instance_names = instance_names |
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108 |
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109 def get_instance_names(self): |
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110 return self.instance_dirs.keys() |
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111 |
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112 def get_instance_name(self, dir): |
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113 return self.instance_names[dir] |
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114 |
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115 def get_instance_dir(self, name): |
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116 return self.instance_dirs[name] |
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117 |
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118 def load_instance_config(self, name): |
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119 instance_dir = self.get_instance_dir(name) |
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120 |
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121 defaults_file = self.conf.get(name, 'defaults') |
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122 config_file = self.conf.get(name, 'config') |
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123 |
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124 defaults_dictionary = { 'homedir' : instance_dir, |
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125 'instance_name' : name, |
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126 } |
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127 |
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128 |
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129 c = ConfigParser.ConfigParser(defaults_dictionary) |
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130 c.read(defaults_file) |
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131 c.read(config_file) |
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132 |
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133 return InstanceConfig(c, name, instance_dir) |
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134 |
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135 class InstanceConfig: |
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136 """ |
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137 A container for each per-instance configuration. |
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138 """ |
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139 |
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140 def __init__(self, c, instanceName, instanceDirectory): |
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141 assert isinstance(c, ConfigParser.ConfigParser) |
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142 self.conf = c |
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143 self.name = instanceName |
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144 self.directory = instanceDirectory |
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145 |
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146 def get_name(self): |
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147 return self.name |
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148 |
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149 def get_directory(self): |
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150 return self.directory |
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151 |
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152 def get(self, group, attr): |
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153 return self.conf.get(group, attr) |
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154 |
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155 if __name__ == '__main__': |
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156 base_config = load_base_config() |
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157 instances_config = base_config.load_instances_config() |
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158 |
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159 for k in instances_config.get_instance_names(): |
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160 print "%s:%s"%(k, instances_config.get_instance_dir(k),) |
