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annotate piecrust/main.py @ 929:cebeedfa034f

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serve: Don't start the admin panel SSE until the window is ready.
author Ludovic Chabant <ludovic@chabant.com>
date Wed, 04 Oct 2017 09:08:31 -0700
parents eed19a80c00e
children 45ad976712ec
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
612
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1 import os
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2 import os.path
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8703be118430 Changes to `help` command and extendable commands:
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3 import io
3
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4 import sys
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5 import time
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6 import hashlib
3
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7 import logging
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8 import argparse
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9 import colorama
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cb1ed436642c Always use version generated by `setup.py`. Better version generation.
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10 from piecrust import APP_VERSION
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456db44dcc53 bake: Pass the config variants and values from the CLI to the baker.
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11 from piecrust.app import (
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12 PieCrustFactory, PieCrustConfiguration)
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13 from piecrust.chefutil import (
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14 format_timed, log_friendly_exception, print_help_item)
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c8c522dacfea Add `help` function, cleanup argument handling.
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15 from piecrust.commands.base import CommandContext
3
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16 from piecrust.pathutil import SiteNotFoundError, find_app_root
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17 from piecrust.plugins.base import PluginLoader
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18
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19
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20 logger = logging.getLogger(__name__)
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21
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22
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23 class ColoredFormatter(logging.Formatter):
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24 COLORS = {
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25 'DEBUG': colorama.Fore.BLACK + colorama.Style.BRIGHT,
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26 'INFO': '',
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27 'WARNING': colorama.Fore.YELLOW,
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28 'ERROR': colorama.Fore.RED,
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29 'CRITICAL': colorama.Back.RED + colorama.Fore.WHITE
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30 }
3
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31
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32 def __init__(self, fmt=None, datefmt=None):
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33 super(ColoredFormatter, self).__init__(fmt, datefmt)
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34
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35 def format(self, record):
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36 color = self.COLORS.get(record.levelname)
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37 res = super(ColoredFormatter, self).format(record)
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38 if color:
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39 res = color + res + colorama.Style.RESET_ALL
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40 return res
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41
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42
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43 class NullPieCrust:
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44 def __init__(self, theme_site=False):
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45 self.theme_site = theme_site
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46 self.root_dir = None
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47 self.debug = False
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48 self.templates_dirs = []
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49 self.theme_dir = None
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50 self.cache_dir = None
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51 self.config = PieCrustConfiguration()
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52 self.plugin_loader = PluginLoader(self)
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53 self.env = None
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54
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55
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56 def main():
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57 if sys.platform == 'darwin':
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58 # There's a bug on MacOSX that can cause Python to be confused
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59 # about the locale. Let's try to fix that.
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60 # See: http://bugs.python.org/issue18378
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61 import locale
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62 try:
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63 locale.getdefaultlocale()
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64 except ValueError:
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65 locale.setlocale(locale.LC_ALL, 'en_US.UTF-8')
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66
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67 argv = sys.argv[1:]
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68 pre_args = _pre_parse_chef_args(argv)
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69 try:
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70 exit_code = _run_chef(pre_args, argv)
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71 except Exception as ex:
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72 if pre_args.debug:
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73 logger.exception(ex)
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74 else:
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75 log_friendly_exception(logger, ex)
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76 exit_code = 1
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77 sys.exit(exit_code)
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78
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79
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80 def _setup_main_parser_arguments(parser):
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81 parser.add_argument(
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82 '--version',
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83 action='version',
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84 version=('%(prog)s ' + APP_VERSION))
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85 parser.add_argument(
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86 '--root',
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87 help="The root directory of the website.")
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88 parser.add_argument(
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89 '--theme',
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90 action='store_true',
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91 help="Makes the current command apply to a theme website.")
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92 parser.add_argument(
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93 '--config',
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94 action='append',
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95 dest='config_variants',
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96 help="The configuration variant(s) to use for this command.")
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97 parser.add_argument(
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98 '--config-set',
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99 nargs=2,
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100 metavar=('NAME', 'VALUE'),
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101 action='append',
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102 dest='config_values',
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103 help="Sets a specific site configuration setting.")
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104 parser.add_argument(
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105 '--debug',
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106 help="Show debug information.", action='store_true')
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107 parser.add_argument(
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108 '--debug-only',
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109 action='append',
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110 help="Only show debug information for the given categories.")
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111 parser.add_argument(
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112 '--no-cache',
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113 help="When applicable, disable caching.",
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114 action='store_true')
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115 parser.add_argument(
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116 '--quiet',
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117 help="Print only important information.",
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118 action='store_true')
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119 parser.add_argument(
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120 '--log',
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121 dest='log_file',
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122 help="Send log messages to the specified file.")
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123 parser.add_argument(
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124 '--log-debug',
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125 help="Log debug messages to the log file.",
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126 action='store_true')
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127 parser.add_argument(
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128 '--no-color',
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129 help="Don't use colorized output.",
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130 action='store_true')
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131 parser.add_argument(
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132 '--pid-file',
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133 dest='pid_file',
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134 help="Write a PID file for the current process.")
38
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135
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136
666
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137 """ Kinda hacky, but we want the `serve` command to use a different cache
852
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138 so that PieCrust doesn't need to re-render all the pages when going
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139 between `serve` and `bake` (or, worse, *not* re-render them all correctly
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diff changeset
140 and end up serving or baking the wrong version).
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141 """
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diff changeset
142 _command_caches = {
852
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143 'serve': 'server'}
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144
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145
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diff changeset
146 def _pre_parse_chef_args(argv):
3
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147 # We need to parse some arguments before we can build the actual argument
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148 # parser, because it can affect which plugins will be loaded. Also, log-
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149 # related arguments must be parsed first because we want to log everything
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150 # from the beginning.
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151 parser = argparse.ArgumentParser()
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152 _setup_main_parser_arguments(parser)
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153 parser.add_argument('extra_args', nargs=argparse.REMAINDER)
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154 res, _ = parser.parse_known_args(argv)
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155
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156 # Setup the logger.
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157 if res.debug and res.quiet:
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158 raise Exception("You can't specify both --debug and --quiet.")
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159
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160 strip_colors = None
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diff changeset
161 if res.no_color:
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diff changeset
162 strip_colors = True
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163
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diff changeset
164 colorama.init(strip=strip_colors)
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165 root_logger = logging.getLogger()
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166 root_logger.setLevel(logging.INFO)
97
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diff changeset
167 if res.debug or res.log_debug:
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168 root_logger.setLevel(logging.DEBUG)
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diff changeset
169
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170 if res.debug_only:
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diff changeset
171 for n in res.debug_only:
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diff changeset
172 logging.getLogger(n).setLevel(logging.DEBUG)
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diff changeset
173
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174 log_handler = logging.StreamHandler(sys.stdout)
564
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diff changeset
175 if res.debug or res.debug_only:
97
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diff changeset
176 log_handler.setLevel(logging.DEBUG)
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177 log_handler.setFormatter(ColoredFormatter("[%(name)s] %(message)s"))
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178 else:
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diff changeset
179 if res.quiet:
97
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diff changeset
180 log_handler.setLevel(logging.WARNING)
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181 else:
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diff changeset
182 log_handler.setLevel(logging.INFO)
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183 log_handler.setFormatter(ColoredFormatter("%(message)s"))
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184 root_logger.addHandler(log_handler)
97
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diff changeset
185
38
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diff changeset
186 if res.log_file:
97
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diff changeset
187 file_handler = logging.FileHandler(res.log_file, mode='w')
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diff changeset
188 root_logger.addHandler(file_handler)
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diff changeset
189 if res.log_debug:
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diff changeset
190 file_handler.setLevel(logging.DEBUG)
38
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diff changeset
191
612
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diff changeset
192 # PID file.
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193 if res.pid_file:
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diff changeset
194 try:
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195 pid_file_dir = os.path.dirname(res.pid_file)
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196 if pid_file_dir and not os.path.isdir(pid_file_dir):
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diff changeset
197 os.makedirs(pid_file_dir)
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diff changeset
198
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199 with open(res.pid_file, 'w') as fp:
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200 fp.write(str(os.getpid()))
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diff changeset
201 except OSError as ex:
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diff changeset
202 raise Exception("Can't write PID file: %s" % res.pid_file) from ex
2edaefcb82cd chef: Add `--pid-file` option.
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diff changeset
203
38
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diff changeset
204 return res
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diff changeset
205
3
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206
666
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diff changeset
207 def _build_cache_key(pre_args):
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diff changeset
208 cache_key_str = 'default'
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diff changeset
209 if pre_args.extra_args:
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diff changeset
210 cmd_name = pre_args.extra_args[0]
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diff changeset
211 if cmd_name in _command_caches:
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diff changeset
212 cache_key_str = _command_caches[cmd_name]
909
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diff changeset
213 if pre_args.config_variants:
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parents: 852
diff changeset
214 for value in pre_args.config_variants:
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diff changeset
215 cache_key_str += ',variant=%s' % value
666
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diff changeset
216 if pre_args.config_values:
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diff changeset
217 for name, value in pre_args.config_values:
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diff changeset
218 cache_key_str += ',%s=%s' % (name, value)
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diff changeset
219
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diff changeset
220 logger.debug("Using cache key: %s" % cache_key_str)
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diff changeset
221 cache_key = hashlib.md5(cache_key_str.encode('utf8')).hexdigest()
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diff changeset
222 return cache_key
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diff changeset
223
81d9c3a3a0b5 internal: Get rid of the whole "sub cache" business.
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diff changeset
224
384
d241585412ad internal: Make it possible to pass `argv` to the main Chef function.
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parents: 371
diff changeset
225 def _run_chef(pre_args, argv):
3
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diff changeset
226 # Setup the app.
489
186a29f61ddc internal: Fix timing info.
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parents: 467
diff changeset
227 start_time = time.perf_counter()
583
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diff changeset
228 root = None
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diff changeset
229 if pre_args.root:
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diff changeset
230 root = os.path.expanduser(pre_args.root)
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diff changeset
231 else:
38
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parents: 7
diff changeset
232 try:
663
3ceeca7bb71c themes: Add support for a `--theme` argument to `chef`.
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parents: 632
diff changeset
233 root = find_app_root(theme=pre_args.theme)
38
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parents: 7
diff changeset
234 except SiteNotFoundError:
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diff changeset
235 root = None
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parents:
diff changeset
236
666
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diff changeset
237 # Can't apply custom configuration stuff if there's no website.
909
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parents: 852
diff changeset
238 if (pre_args.config_variants or pre_args.config_values) and not root:
666
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diff changeset
239 raise SiteNotFoundError(
852
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diff changeset
240 "Can't apply any configuration variant or value overrides, "
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diff changeset
241 "there is no website here.")
666
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diff changeset
242
81d9c3a3a0b5 internal: Get rid of the whole "sub cache" business.
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parents: 663
diff changeset
243 if root:
81d9c3a3a0b5 internal: Get rid of the whole "sub cache" business.
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parents: 663
diff changeset
244 cache_key = None
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diff changeset
245 if not pre_args.no_cache:
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parents: 663
diff changeset
246 cache_key = _build_cache_key(pre_args)
852
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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diff changeset
247 appfactory = PieCrustFactory(
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diff changeset
248 root,
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diff changeset
249 theme_site=pre_args.theme,
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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parents: 689
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250 cache=(not pre_args.no_cache),
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251 cache_key=cache_key,
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252 debug=pre_args.debug,
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253 config_variants=pre_args.config_variants,
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254 config_values=pre_args.config_values)
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255 app = appfactory.create()
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256 else:
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257 appfactory = None
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258 app = NullPieCrust(
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259 theme_site=pre_args.theme)
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260
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261 # Setup the arg parser.
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262 parser = argparse.ArgumentParser(
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263 prog='chef',
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264 description="The PieCrust chef manages your website.",
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265 formatter_class=argparse.RawDescriptionHelpFormatter)
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266 _setup_main_parser_arguments(parser)
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267
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268 commands = sorted(app.plugin_loader.getCommands(),
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269 key=lambda c: c.name)
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270 subparsers = parser.add_subparsers(title='list of commands')
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271 for c in commands:
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272 p = subparsers.add_parser(c.name, help=c.description)
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273 c.setupParser(p, app)
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274 p.set_defaults(func=c.checkedRun)
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275 p.set_defaults(cache_name=c.cache_name)
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276
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277 help_cmd = next(filter(lambda c: c.name == 'help', commands), None)
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278 if help_cmd and help_cmd.has_topics:
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279 with io.StringIO() as epilog:
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280 epilog.write("additional help topics:\n")
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281 for name, desc in help_cmd.getTopics():
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282 print_help_item(epilog, name, desc)
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283 parser.epilog = epilog.getvalue()
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284
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285 # Parse the command line.
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286 result = parser.parse_args(argv)
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287 logger.debug(format_timed(start_time, 'initialized PieCrust',
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288 colored=False))
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289
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290 # Print the help if no command was specified.
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291 if not hasattr(result, 'func'):
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292 parser.print_help()
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293 return 0
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294
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295 # Run the command!
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296 ctx = CommandContext(appfactory, app, parser, result)
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297 exit_code = result.func(ctx)
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298 if exit_code is None:
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299 return 0
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300 if not isinstance(exit_code, int):
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301 logger.error("Got non-integer exit code: %s" % exit_code)
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302 return -1
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303 return exit_code
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304