Mercurial > libervia-web

annotate libervia/server/tasks/implicit/task_sass.py @ 1260:6161076193e0

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tasks: dir event filter: if a Task instance implements `onDirEvent`, it will be called instead of `start`, this way the task can filter the events or modify the workflow.
author Goffi <goffi@goffi.org>
date Sun, 03 May 2020 21:07:22 +0200
parents 1ec41ac1e7cf
children 10748aa888a9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1257
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1 #!/ur/bin/env python3
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2
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3 import json
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4 from pathlib import Path
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5 from sat.core.i18n import _
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6 from sat.core.log import getLogger
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7 from sat.core import exceptions
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8 from libervia.server.constants import Const as C
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9 from libervia.server.tasks import task
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10
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11
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12 log = getLogger(__name__)
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13
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14 SASS_SUFFIXES = ('.sass', '.scss')
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15
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16
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17 class Task(task.Task):
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18 """Compile .sass and .scss files found in themes browser paths"""
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19 AFTER = ['js_modules']
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20
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21 async def prepare(self):
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22 # we look for any Sass file, and cancel this task if none is found
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23 sass_dirs = set()
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24 for browser_path in self.resource.browser_modules.get('themes_browser_paths', []):
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25 for p in browser_path.iterdir():
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26 if p.suffix in SASS_SUFFIXES:
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27 sass_dirs.add(browser_path)
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28 break
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29
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30 if not sass_dirs:
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31 raise exceptions.CancelError("No Sass file found")
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32
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33 # we have some Sass files, we need to install the compiler
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34 d_path = self.resource.dev_build_path
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35 package_path = d_path / "package.json"
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36 try:
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37 with package_path.open() as f:
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38 package = json.load(f)
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39 except FileNotFoundError:
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40 package = {}
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41 except Exception as e:
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42 log.error(f"Unexepected exception while parsing package.json: {e}")
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43
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44 if 'node-sass' not in package.setdefault('dependencies', {}):
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45 package['dependencies']['node-sass'] = 'latest'
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46 with package_path.open('w') as f:
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47 json.dump(package, f, indent=4)
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48
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49 try:
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50 cmd = self.findCommand('yarn')
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51 except exceptions.NotFound:
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52 cmd = self.findCommand('npm')
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53 await self.runCommand(cmd, 'install', path=str(d_path))
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54
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55 self.WATCH_DIRS = list(sass_dirs)
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56
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57 async def onDirEvent(self, host, filepath, flags):
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58 if filepath.suffix in SASS_SUFFIXES:
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59 await self.manager.runTaskInstance(self)
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60
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61 async def start(self):
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62 d_path = self.resource.dev_build_path
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63 node_sass = d_path / 'node_modules' / 'node-sass' / 'bin' / 'node-sass'
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64 for browser_path in self.resource.browser_modules['themes_browser_paths']:
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65 for p in browser_path.iterdir():
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66 if p.suffix not in SASS_SUFFIXES:
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67 continue
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68 await self.runCommand(
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69 str(node_sass),
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70 "--omit-source-map-url",
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71 "--output-style", "compressed",
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72 "--output", str(self.build_path),
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73 str(p),
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74 path=str(self.build_path)
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75 )