Mercurial > piecrust2

annotate piecrust/pipelines/_pagebaker.py @ 1143:1c324407bd1f

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internal: Cleanup in the paginator's code.
author Ludovic Chabant <ludovic@chabant.com>
date Tue, 05 Jun 2018 21:59:41 -0700
parents 5f97b5b59dfe
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 import os.path
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2 import copy
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3 import queue
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4 import shutil
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5 import logging
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6 import threading
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7 import urllib.parse
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8 from piecrust.pipelines._pagerecords import (
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9 SubPageFlags, create_subpage_job_result)
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10 from piecrust.rendering import RenderingContext, render_page
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11 from piecrust.sources.base import AbortedSourceUseError
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12 from piecrust.uriutil import split_uri
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13
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14
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15 logger = logging.getLogger(__name__)
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16
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17
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18 def get_output_path(app, out_dir, uri, pretty_urls):
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19 uri_root, uri_path = split_uri(app, uri)
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20
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21 bake_path = [out_dir]
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22 decoded_uri = urllib.parse.unquote(uri_path)
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23 if pretty_urls:
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24 bake_path.append(decoded_uri)
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25 bake_path.append('index.html')
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26 elif decoded_uri == '':
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27 bake_path.append('index.html')
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28 else:
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29 bake_path.append(decoded_uri)
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30
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31 return os.path.normpath(os.path.join(*bake_path))
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32
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33
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34 class BakingError(Exception):
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35 pass
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36
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37
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38 class PageBaker(object):
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39 def __init__(self, app, out_dir, force=False):
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40 self.app = app
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41 self.out_dir = out_dir
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42 self.force = force
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43 self.site_root = app.config.get('site/root')
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44 self.pretty_urls = app.config.get('site/pretty_urls')
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45 self._do_write = self._writeDirect
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46 self._writer_queue = None
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47 self._writer = None
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48 self._stats = app.env.stats
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49 self._rsr = app.env.rendered_segments_repository
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50
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51 def startWriterQueue(self):
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52 self._writer_queue = queue.Queue()
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53 self._writer = threading.Thread(
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54 name='PageSerializer',
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55 daemon=True,
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56 target=_text_writer,
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57 args=(self._writer_queue,))
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58 self._writer.start()
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59 self._do_write = self._sendToWriterQueue
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60
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61 def stopWriterQueue(self):
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62 self._writer_queue.put_nowait(None)
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63 self._writer.join()
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64
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65 def _sendToWriterQueue(self, out_path, content):
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66 self._writer_queue.put_nowait((out_path, content))
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67
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68 def _writeDirect(self, out_path, content):
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69 with open(out_path, 'w', encoding='utf8') as fp:
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70 fp.write(content)
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71
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72 def bake(self, page, prev_entry,
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73 force_segments=False, force_layout=False):
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74 cur_sub = 1
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75 has_more_subs = True
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76 app = self.app
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77 out_dir = self.out_dir
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78 force_segments = self.force or force_segments
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79 force_layout = self.force or force_layout
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80 pretty_urls = page.config.get('pretty_urls', self.pretty_urls)
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81
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82 rendered_subs = []
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83
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84 # Start baking the sub-pages.
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85 while has_more_subs:
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86 sub_uri = page.getUri(sub_num=cur_sub)
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87 logger.debug("Baking '%s' [%d]..." % (sub_uri, cur_sub))
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88
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89 out_path = get_output_path(app, out_dir, sub_uri, pretty_urls)
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90
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91 # Create the sub-entry for the bake record.
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92 cur_sub_entry = create_subpage_job_result(sub_uri, out_path)
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93 rendered_subs.append(cur_sub_entry)
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94
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95 # Find a corresponding sub-entry in the previous bake record.
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96 prev_sub_entry = None
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97 if prev_entry is not None:
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98 try:
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99 prev_sub_entry = prev_entry.getSub(cur_sub)
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100 except IndexError:
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101 pass
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102
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103 # Figure out if we need to bake this page.
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104 bake_status = _get_bake_status(page, out_path,
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105 force_segments, force_layout,
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106 prev_sub_entry, cur_sub_entry)
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107
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108 # If this page didn't bake because it's already up-to-date.
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109 # Keep trying for as many subs as we know this page has.
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110 if bake_status == STATUS_CLEAN:
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111 cur_sub_entry['render_info'] = copy.deepcopy(
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112 prev_sub_entry['render_info'])
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113 cur_sub_entry['flags'] = \
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114 SubPageFlags.FLAG_COLLAPSED_FROM_LAST_RUN
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115
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116 if prev_entry.num_subs >= cur_sub + 1:
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117 cur_sub += 1
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118 has_more_subs = True
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119 logger.debug(" %s is up to date, skipping to next "
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120 "sub-page." % out_path)
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121 continue
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122
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123 logger.debug(" %s is up to date, skipping bake." % out_path)
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parents:
diff changeset
124 break
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parents:
diff changeset
125
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parents:
diff changeset
126 # All good, proceed.
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parents:
diff changeset
127 try:
871
504ddb370df8 refactor: Fixing some issues with baking assets.
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diff changeset
128 if bake_status == STATUS_INVALIDATE_AND_BAKE:
852
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parents:
diff changeset
129 cache_key = sub_uri
871
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
130 self._rsr.invalidate(cache_key)
989
8adc27285d93 bake: Big pass on bake performance.
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diff changeset
131 cur_sub_entry['flags'] |= \
8adc27285d93 bake: Big pass on bake performance.
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diff changeset
132 SubPageFlags.FLAG_RENDER_CACHE_INVALIDATED
852
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parents:
diff changeset
133
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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parents:
diff changeset
134 logger.debug(" p%d -> %s" % (cur_sub, out_path))
854
08e02c2a2a1a core: Keep refactoring, this time to prepare for generator sources.
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parents: 852
diff changeset
135 rp = self._bakeSingle(page, cur_sub, out_path)
877
d6d35b2efd04 bake: Rename "pass" to "step" and make the page pipeline use different steps.
Ludovic Chabant <ludovic@chabant.com>
parents: 871
diff changeset
136 except AbortedSourceUseError:
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parents: 871
diff changeset
137 raise
852
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parents:
diff changeset
138 except Exception as ex:
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parents:
diff changeset
139 logger.exception(ex)
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parents:
diff changeset
140 raise BakingError("%s: error baking '%s'." %
854
08e02c2a2a1a core: Keep refactoring, this time to prepare for generator sources.
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parents: 852
diff changeset
141 (page.content_spec, sub_uri)) from ex
852
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diff changeset
142
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parents:
diff changeset
143 # Record what we did.
989
8adc27285d93 bake: Big pass on bake performance.
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diff changeset
144 cur_sub_entry['flags'] |= SubPageFlags.FLAG_BAKED
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diff changeset
145 cur_sub_entry['render_info'] = copy.deepcopy(rp.render_info)
852
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parents:
diff changeset
146
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parents:
diff changeset
147 # Copy page assets.
871
504ddb370df8 refactor: Fixing some issues with baking assets.
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diff changeset
148 if (cur_sub == 1 and
989
8adc27285d93 bake: Big pass on bake performance.
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diff changeset
149 cur_sub_entry['render_info']['used_assets']):
852
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diff changeset
150 if pretty_urls:
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parents:
diff changeset
151 out_assets_dir = os.path.dirname(out_path)
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152 else:
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diff changeset
153 out_assets_dir, out_name = os.path.split(out_path)
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parents:
diff changeset
154 if sub_uri != self.site_root:
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parents:
diff changeset
155 out_name_noext, _ = os.path.splitext(out_name)
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parents:
diff changeset
156 out_assets_dir = os.path.join(out_assets_dir,
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parents:
diff changeset
157 out_name_noext)
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parents:
diff changeset
158
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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parents:
diff changeset
159 logger.debug("Copying page assets to: %s" % out_assets_dir)
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parents:
diff changeset
160 _ensure_dir_exists(out_assets_dir)
871
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
161 assetor = rp.data.get('assets')
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
162 if assetor is not None:
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
163 for i in assetor._getAssetItems():
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
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diff changeset
164 fn = os.path.basename(i.spec)
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parents: 854
diff changeset
165 out_asset_path = os.path.join(out_assets_dir, fn)
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diff changeset
166 logger.debug(" %s -> %s" % (i.spec, out_asset_path))
504ddb370df8 refactor: Fixing some issues with baking assets.
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parents: 854
diff changeset
167 shutil.copy(i.spec, out_asset_path)
852
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parents:
diff changeset
168
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parents:
diff changeset
169 # Figure out if we have more work.
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parents:
diff changeset
170 has_more_subs = False
989
8adc27285d93 bake: Big pass on bake performance.
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parents: 979
diff changeset
171 if cur_sub_entry['render_info']['pagination_has_more']:
852
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parents:
diff changeset
172 cur_sub += 1
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parents:
diff changeset
173 has_more_subs = True
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parents:
diff changeset
174
989
8adc27285d93 bake: Big pass on bake performance.
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diff changeset
175 return rendered_subs
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diff changeset
176
854
08e02c2a2a1a core: Keep refactoring, this time to prepare for generator sources.
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diff changeset
177 def _bakeSingle(self, page, sub_num, out_path):
08e02c2a2a1a core: Keep refactoring, this time to prepare for generator sources.
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diff changeset
178 ctx = RenderingContext(page, sub_num=sub_num)
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diff changeset
179 page.source.prepareRenderContext(ctx)
852
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parents:
diff changeset
180
854
08e02c2a2a1a core: Keep refactoring, this time to prepare for generator sources.
Ludovic Chabant <ludovic@chabant.com>
parents: 852
diff changeset
181 with self._stats.timerScope("PageRender"):
852
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parents:
diff changeset
182 rp = render_page(ctx)
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parents:
diff changeset
183
854
08e02c2a2a1a core: Keep refactoring, this time to prepare for generator sources.
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diff changeset
184 with self._stats.timerScope("PageSerialize"):
871
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
185 self._do_write(out_path, rp.content)
852
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parents:
diff changeset
186
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parents:
diff changeset
187 return rp
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parents:
diff changeset
188
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parents:
diff changeset
189
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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parents:
diff changeset
190 def _text_writer(q):
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parents:
diff changeset
191 while True:
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parents:
diff changeset
192 item = q.get()
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parents:
diff changeset
193 if item is not None:
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parents:
diff changeset
194 out_path, txt = item
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parents:
diff changeset
195 out_dir = os.path.dirname(out_path)
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parents:
diff changeset
196 _ensure_dir_exists(out_dir)
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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parents:
diff changeset
197
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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parents:
diff changeset
198 with open(out_path, 'w', encoding='utf8') as fp:
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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parents:
diff changeset
199 fp.write(txt)
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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parents:
diff changeset
200
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
201 q.task_done()
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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parents:
diff changeset
202 else:
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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parents:
diff changeset
203 # Sentinel object, terminate the thread.
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parents:
diff changeset
204 q.task_done()
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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parents:
diff changeset
205 break
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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parents:
diff changeset
206
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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parents:
diff changeset
207
871
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
208 STATUS_CLEAN = 0
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
209 STATUS_BAKE = 1
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
210 STATUS_INVALIDATE_AND_BAKE = 2
852
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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parents:
diff changeset
211
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
Ludovic Chabant <ludovic@chabant.com>
parents:
diff changeset
212
1132
3bcb2d446397 fix: Correctly invalidate pages that use dirtied sources.
Ludovic Chabant <ludovic@chabant.com>
parents: 1020
diff changeset
213 def _get_bake_status(page, out_path, force_segments, force_layout,
3bcb2d446397 fix: Correctly invalidate pages that use dirtied sources.
Ludovic Chabant <ludovic@chabant.com>
parents: 1020
diff changeset
214 prev_sub_entry, cur_sub_entry):
3bcb2d446397 fix: Correctly invalidate pages that use dirtied sources.
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parents: 1020
diff changeset
215 # Easy tests.
3bcb2d446397 fix: Correctly invalidate pages that use dirtied sources.
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parents: 1020
diff changeset
216 if force_segments:
3bcb2d446397 fix: Correctly invalidate pages that use dirtied sources.
Ludovic Chabant <ludovic@chabant.com>
parents: 1020
diff changeset
217 return STATUS_INVALIDATE_AND_BAKE
3bcb2d446397 fix: Correctly invalidate pages that use dirtied sources.
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parents: 1020
diff changeset
218 if force_layout:
3bcb2d446397 fix: Correctly invalidate pages that use dirtied sources.
Ludovic Chabant <ludovic@chabant.com>
parents: 1020
diff changeset
219 return STATUS_BAKE
3bcb2d446397 fix: Correctly invalidate pages that use dirtied sources.
Ludovic Chabant <ludovic@chabant.com>
parents: 1020
diff changeset
220
871
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
221 # Figure out if we need to invalidate or force anything.
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
222 status = _compute_force_flags(prev_sub_entry, cur_sub_entry)
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
223 if status != STATUS_CLEAN:
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
224 return status
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
225
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
226 # Check for up-to-date outputs.
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
227 in_path_time = page.content_mtime
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
228 try:
504ddb370df8 refactor: Fixing some issues with baking assets.
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parents: 854
diff changeset
229 out_path_time = os.path.getmtime(out_path)
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
230 except OSError:
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
231 # File doesn't exist, we'll need to bake.
989
8adc27285d93 bake: Big pass on bake performance.
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parents: 979
diff changeset
232 cur_sub_entry['flags'] |= \
8adc27285d93 bake: Big pass on bake performance.
Ludovic Chabant <ludovic@chabant.com>
parents: 979
diff changeset
233 SubPageFlags.FLAG_FORCED_BY_NO_PREVIOUS
871
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diff changeset
234 return STATUS_BAKE
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
235
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
236 if out_path_time <= in_path_time:
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Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
237 return STATUS_BAKE
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
238
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
239 # Nope, all good.
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
240 return STATUS_CLEAN
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
241
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
242
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
243 def _compute_force_flags(prev_sub_entry, cur_sub_entry):
989
8adc27285d93 bake: Big pass on bake performance.
Ludovic Chabant <ludovic@chabant.com>
parents: 979
diff changeset
244 if prev_sub_entry and len(prev_sub_entry['errors']) > 0:
871
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
245 # Previous bake failed. We'll have to bake it again.
989
8adc27285d93 bake: Big pass on bake performance.
Ludovic Chabant <ludovic@chabant.com>
parents: 979
diff changeset
246 cur_sub_entry['flags'] |= \
8adc27285d93 bake: Big pass on bake performance.
Ludovic Chabant <ludovic@chabant.com>
parents: 979
diff changeset
247 SubPageFlags.FLAG_FORCED_BY_PREVIOUS_ERRORS
871
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
248 return STATUS_BAKE
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
parents: 854
diff changeset
249
504ddb370df8 refactor: Fixing some issues with baking assets.
Ludovic Chabant <ludovic@chabant.com>
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250 if not prev_sub_entry:
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251 # No previous record, so most probably was never baked. Bake it.
8adc27285d93 bake: Big pass on bake performance.
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252 cur_sub_entry['flags'] |= \
1136
5f97b5b59dfe bake: Optimize cache handling for the baking process.
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253 SubPageFlags.FLAG_FORCED_BY_NO_RECORD
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254 return STATUS_BAKE
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255
504ddb370df8 refactor: Fixing some issues with baking assets.
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256 return STATUS_CLEAN
852
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
Ludovic Chabant <ludovic@chabant.com>
parents:
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257
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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258
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259 def _ensure_dir_exists(path):
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parents:
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260 try:
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261 os.makedirs(path, mode=0o755, exist_ok=True)
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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262 except OSError:
4850f8c21b6e core: Start of the big refactor for PieCrust 3.0.
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parents:
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263 # In a multiprocess environment, several process may very
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parents:
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264 # occasionally try to create the same directory at the same time.
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parents:
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265 # Let's ignore any error and if something's really wrong (like file
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266 # acces permissions or whatever), then it will more legitimately fail
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parents:
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267 # just after this when we try to write files.
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268 pass
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269