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annotate piecrust/data/builder.py @ 406:9caaf78a17db

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debug: Log error when an exception gets raised during debug info building.
author Ludovic Chabant <ludovic@chabant.com>
date Mon, 25 May 2015 18:35:27 -0700
parents 4b1019bb2533
children f1b759c188b0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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f9f67086415c Allow adding to the default content model instead of replacing it.
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1 import re
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2 import time
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3 import copy
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4 import logging
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5 from werkzeug.utils import cached_property
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6 from piecrust import APP_VERSION
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7 from piecrust.configuration import merge_dicts
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8 from piecrust.data.assetor import Assetor
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9 from piecrust.data.debug import build_debug_info
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10 from piecrust.data.linker import PageLinkerData
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11 from piecrust.data.paginator import Paginator
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12 from piecrust.uriutil import split_sub_uri
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15 logger = logging.getLogger(__name__)
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17
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18 class DataBuildingContext(object):
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19 def __init__(self, qualified_page, page_num=1):
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20 self.page = qualified_page
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21 self.page_num = page_num
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22 self.pagination_source = None
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23 self.pagination_filter = None
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24
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25 @property
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26 def app(self):
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27 return self.page.app
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28
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29 @cached_property
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30 def uri(self):
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31 return self.page.getUri(self.page_num)
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34 def build_page_data(ctx):
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35 app = ctx.app
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36 page = ctx.page
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37 first_uri, _ = split_sub_uri(app, ctx.uri)
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38
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39 pc_data = PieCrustData()
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40 pgn_source = ctx.pagination_source or get_default_pagination_source(page)
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41 paginator = Paginator(page, pgn_source,
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42 page_num=ctx.page_num,
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43 pgn_filter=ctx.pagination_filter)
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44 assetor = Assetor(page, first_uri)
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45 linker = PageLinkerData(page.source, page.rel_path)
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46 data = {
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47 'piecrust': pc_data,
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48 'page': {},
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49 'assets': assetor,
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50 'pagination': paginator,
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51 'family': linker
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52 }
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53 page_data = data['page']
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54 page_data.update(copy.deepcopy(page.source_metadata))
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55 page_data.update(page.config.getDeepcopy(app.debug))
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56 page_data['url'] = ctx.uri
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57 page_data['timestamp'] = time.mktime(page.datetime.timetuple())
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58 date_format = app.config.get('site/date_format')
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59 if date_format:
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60 page_data['date'] = page.datetime.strftime(date_format)
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61
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62 #TODO: handle slugified taxonomy terms.
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63
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64 site_data = build_site_data(page)
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65 merge_dicts(data, site_data)
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66
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67 # Do this at the end because we want all the data to be ready to be
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68 # displayed in the debugger window.
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69 if (app.config.get('site/show_debug_info') and
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70 not app.config.get('baker/is_baking')):
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71 pc_data._enableDebugInfo(page, data)
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72
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73 return data
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75
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76 def build_layout_data(page, page_data, contents):
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77 for name, txt in contents.items():
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78 if name in page_data:
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79 logger.warning("Content segment '%s' will hide existing data." %
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80 name)
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81 page_data[name] = txt
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83
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84 class PieCrustData(object):
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85 debug_render = ['version', 'url', 'branding', 'debug_info']
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86 debug_render_invoke = ['version', 'url', 'branding', 'debug_info']
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87 debug_render_redirect = {'debug_info': '_debugRenderDebugInfo'}
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88
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89 def __init__(self):
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90 self.version = APP_VERSION
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91 self.url = 'http://bolt80.com/piecrust/'
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92 self.branding = 'Baked with <em><a href="%s">PieCrust</a> %s</em>.' % (
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93 'http://bolt80.com/piecrust/', APP_VERSION)
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94 self._page = None
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95 self._data = None
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96
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97 @property
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98 def debug_info(self):
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99 if self._page is not None and self._data is not None:
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100 try:
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101 return build_debug_info(self._page, self._data)
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102 except Exception as ex:
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103 logger.exception(ex)
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104 return ('An error occured while generating debug info. '
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105 'Please check the logs.')
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106 return ''
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107
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108 def _enableDebugInfo(self, page, data):
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109 self._page = page
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110 self._data = data
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111
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112 def _debugRenderDebugInfo(self):
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113 return "The very thing you're looking at!"
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114
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115
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116 re_endpoint_sep = re.compile(r'[\/\.]')
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117
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118
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119 def build_site_data(page):
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120 app = page.app
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121 data = app.config.getDeepcopy(app.debug)
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122 for source in app.sources:
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123 endpoint_bits = re_endpoint_sep.split(source.data_endpoint)
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124 endpoint = data
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125 for e in endpoint_bits[:-1]:
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126 if e not in endpoint:
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127 endpoint[e] = {}
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128 endpoint = endpoint[e]
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129 user_data = endpoint.get(endpoint_bits[-1])
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130 provider = source.buildDataProvider(page, user_data)
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131 endpoint[endpoint_bits[-1]] = provider
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132 return data
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133
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134
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135 def get_default_pagination_source(page):
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136 app = page.app
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137 source_name = page.config.get('source') or page.config.get('blog')
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138 if source_name is None:
323
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139 source_name = app.config.get('site/default_pagination_source')
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140 if source_name is None:
3
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141 blog_names = app.config.get('site/blogs')
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142 if blog_names is not None:
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143 source_name = blog_names[0]
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144 else:
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145 source_name = app.sources[0].name
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146 source = app.getSource(source_name)
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147 return source
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148