Mercurial > piecrust2

annotate piecrust/main.py @ 980:5d867e6ed83f 2.1.0

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cm: Regenerate the CHANGELOG.
author Ludovic Chabant <ludovic@chabant.com>
date Sun, 29 Oct 2017 23:13:05 -0700
parents cd3a00455b87
children 4850f8c21b6e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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10 from piecrust import APP_VERSION
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11 from piecrust.app import (
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12 PieCrust, PieCrustConfiguration, apply_variant_and_values)
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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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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 }
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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
3
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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
3
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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 dest='config_variant',
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95 help="The configuration variant to use for this command.")
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96 parser.add_argument(
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97 '--config-set',
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98 nargs=2,
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99 metavar=('NAME', 'VALUE'),
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100 action='append',
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101 dest='config_values',
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102 help="Sets a specific site configuration setting.")
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103 parser.add_argument(
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104 '--debug',
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105 help="Show debug information.", action='store_true')
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106 parser.add_argument(
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107 '--debug-only',
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108 action='append',
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109 help="Only show debug information for the given categories.")
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110 parser.add_argument(
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111 '--no-cache',
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112 help="When applicable, disable caching.",
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113 action='store_true')
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114 parser.add_argument(
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115 '--quiet',
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116 help="Print only important information.",
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117 action='store_true')
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118 parser.add_argument(
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119 '--log',
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120 dest='log_file',
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121 help="Send log messages to the specified file.")
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122 parser.add_argument(
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123 '--log-debug',
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124 help="Log debug messages to the log file.",
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125 action='store_true')
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126 parser.add_argument(
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127 '--no-color',
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128 help="Don't use colorized output.",
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129 action='store_true')
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130 parser.add_argument(
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131 '--pid-file',
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132 dest='pid_file',
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133 help="Write a PID file for the current process.")
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134
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135
666
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136 """ Kinda hacky, but we want the `serve` command to use a different cache
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137 so that PieCrust doesn't need to re-render all the pages when going
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138 between `serve` and `bake` (or, worse, *not* re-render them all correctly
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139 and end up serving or baking the wrong version).
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140 """
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141 _command_caches = {
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142 'serve': 'server'}
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143
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144
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145 def _pre_parse_chef_args(argv):
3
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146 # We need to parse some arguments before we can build the actual argument
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147 # parser, because it can affect which plugins will be loaded. Also, log-
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148 # related arguments must be parsed first because we want to log everything
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149 # from the beginning.
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150 parser = argparse.ArgumentParser()
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151 _setup_main_parser_arguments(parser)
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152 parser.add_argument('extra_args', nargs=argparse.REMAINDER)
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153 res, _ = parser.parse_known_args(argv)
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154
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155 # Setup the logger.
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156 if res.debug and res.quiet:
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157 raise Exception("You can't specify both --debug and --quiet.")
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158
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159 strip_colors = None
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160 if res.no_color:
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161 strip_colors = True
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162
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163 colorama.init(strip=strip_colors)
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164 root_logger = logging.getLogger()
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165 root_logger.setLevel(logging.INFO)
97
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166 if res.debug or res.log_debug:
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167 root_logger.setLevel(logging.DEBUG)
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168
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169 if res.debug_only:
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170 for n in res.debug_only:
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171 logging.getLogger(n).setLevel(logging.DEBUG)
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172
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173 log_handler = logging.StreamHandler(sys.stdout)
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174 if res.debug or res.debug_only:
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175 log_handler.setLevel(logging.DEBUG)
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176 log_handler.setFormatter(ColoredFormatter("[%(name)s] %(message)s"))
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177 else:
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178 if res.quiet:
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179 log_handler.setLevel(logging.WARNING)
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180 else:
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181 log_handler.setLevel(logging.INFO)
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182 log_handler.setFormatter(ColoredFormatter("%(message)s"))
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183 root_logger.addHandler(log_handler)
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diff changeset
184
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185 if res.log_file:
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186 file_handler = logging.FileHandler(res.log_file, mode='w')
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187 root_logger.addHandler(file_handler)
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188 if res.log_debug:
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189 file_handler.setLevel(logging.DEBUG)
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190
612
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191 # PID file.
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192 if res.pid_file:
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193 try:
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194 pid_file_dir = os.path.dirname(res.pid_file)
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195 if pid_file_dir and not os.path.isdir(pid_file_dir):
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196 os.makedirs(pid_file_dir)
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197
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198 with open(res.pid_file, 'w') as fp:
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199 fp.write(str(os.getpid()))
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200 except OSError as ex:
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201 raise Exception("Can't write PID file: %s" % res.pid_file) from ex
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202
38
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203 return res
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204
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205
666
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206 def _build_cache_key(pre_args):
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207 cache_key_str = 'default'
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208 if pre_args.extra_args:
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209 cmd_name = pre_args.extra_args[0]
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210 if cmd_name in _command_caches:
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211 cache_key_str = _command_caches[cmd_name]
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212 if pre_args.config_variant is not None:
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213 cache_key_str += ',variant=%s' % pre_args.config_variant
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214 if pre_args.config_values:
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215 for name, value in pre_args.config_values:
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216 cache_key_str += ',%s=%s' % (name, value)
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diff changeset
217
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diff changeset
218 logger.debug("Using cache key: %s" % cache_key_str)
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219 cache_key = hashlib.md5(cache_key_str.encode('utf8')).hexdigest()
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220 return cache_key
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diff changeset
221
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diff changeset
222
384
d241585412ad internal: Make it possible to pass `argv` to the main Chef function.
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diff changeset
223 def _run_chef(pre_args, argv):
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224 # Setup the app.
489
186a29f61ddc internal: Fix timing info.
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diff changeset
225 start_time = time.perf_counter()
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226 root = None
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227 if pre_args.root:
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228 root = os.path.expanduser(pre_args.root)
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229 else:
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diff changeset
230 try:
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diff changeset
231 root = find_app_root(theme=pre_args.theme)
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diff changeset
232 except SiteNotFoundError:
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233 root = None
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234
666
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235 # Can't apply custom configuration stuff if there's no website.
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236 if (pre_args.config_variant or pre_args.config_values) and not root:
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237 raise SiteNotFoundError(
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238 "Can't apply any configuration variant or value overrides, "
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diff changeset
239 "there is no website here.")
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240
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diff changeset
241 if root:
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diff changeset
242 cache_key = None
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diff changeset
243 if not pre_args.no_cache:
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diff changeset
244 cache_key = _build_cache_key(pre_args)
663
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diff changeset
245 app = PieCrust(
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diff changeset
246 root,
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diff changeset
247 theme_site=pre_args.theme,
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diff changeset
248 cache=(not pre_args.no_cache),
666
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diff changeset
249 cache_key=cache_key,
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diff changeset
250 debug=pre_args.debug)
666
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diff changeset
251 apply_variant_and_values(
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diff changeset
252 app, pre_args.config_variant, pre_args.config_values)
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diff changeset
253 else:
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diff changeset
254 app = NullPieCrust(
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diff changeset
255 theme_site=pre_args.theme)
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256
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257 # Setup the arg parser.
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258 parser = argparse.ArgumentParser(
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259 prog='chef',
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260 description="The PieCrust chef manages your website.",
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261 formatter_class=argparse.RawDescriptionHelpFormatter)
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262 _setup_main_parser_arguments(parser)
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263
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264 commands = sorted(app.plugin_loader.getCommands(),
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265 key=lambda c: c.name)
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266 subparsers = parser.add_subparsers(title='list of commands')
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267 for c in commands:
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268 p = subparsers.add_parser(c.name, help=c.description)
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269 c.setupParser(p, app)
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270 p.set_defaults(func=c.checkedRun)
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271 p.set_defaults(cache_name=c.cache_name)
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272
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273 help_cmd = next(filter(lambda c: c.name == 'help', commands), None)
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274 if help_cmd and help_cmd.has_topics:
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275 with io.StringIO() as epilog:
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276 epilog.write("additional help topics:\n")
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277 for name, desc in help_cmd.getTopics():
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278 print_help_item(epilog, name, desc)
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279 parser.epilog = epilog.getvalue()
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280
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281 # Parse the command line.
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282 result = parser.parse_args(argv)
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283 logger.debug(format_timed(start_time, 'initialized PieCrust',
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284 colored=False))
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285
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286 # Print the help if no command was specified.
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287 if not hasattr(result, 'func'):
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288 parser.print_help()
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289 return 0
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290
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291 # Run the command!
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292 ctx = CommandContext(app, parser, result)
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293 ctx.config_variant = pre_args.config_variant
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294 ctx.config_values = pre_args.config_values
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295
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296 exit_code = result.func(ctx)
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297 if exit_code is None:
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298 return 0
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299 if not isinstance(exit_code, int):
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300 logger.error("Got non-integer exit code: %s" % exit_code)
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301 return -1
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302 return exit_code
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303