Mercurial > libervia-web
annotate libervia/web/server/tasks/implicit/task_js_modules.py @ 1518:eb00d593801d
refactoring: rename `libervia` to `libervia.web` + update imports following backend changes
author | Goffi <goffi@goffi.org> |
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date | Fri, 02 Jun 2023 16:49:28 +0200 (19 months ago) |
parents | libervia/server/tasks/implicit/task_js_modules.py@106bae41f5c8 |
children | 038d4bfdd967 |
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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 libervia.backend.core.i18n import _ |
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6 from libervia.backend.core.log import getLogger |
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7 from libervia.backend.core import exceptions |
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8 from libervia.web.server.constants import Const as C |
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9 from libervia.web.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 |
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15 class Task(task.Task): |
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16 |
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17 async def prepare(self): |
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18 if "js" not in self.resource.browser_modules: |
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19 raise exceptions.CancelError("No JS module needed") |
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20 |
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21 async def start(self): |
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22 js_data = self.resource.browser_modules['js'] |
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23 package = js_data.get('package', {}) |
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24 package_path = self.build_path / 'package.json' |
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25 with package_path.open('w') as f: |
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26 json.dump(package, f) |
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27 |
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28 cmd = self.find_command('yarnpkg', 'yarn') |
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29 await self.runCommand(cmd, 'install', path=str(self.build_path)) |
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30 |
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31 try: |
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32 brython_map = js_data['brython_map'] |
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33 except KeyError: |
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34 pass |
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35 else: |
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36 log.info(_("creating JS modules mapping for Brython")) |
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37 js_modules_path = self.build_path / 'js_modules' |
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38 js_modules_path.mkdir(exist_ok=True) |
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39 init_path = js_modules_path / '__init__.py' |
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40 init_path.touch() |
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41 |
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42 for module_name, module_data in brython_map.items(): |
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43 log.debug(f"generating mapping for {module_name}") |
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44 if ' ' in module_name: |
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45 raise ValueError( |
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46 f"module {module_name!r} has space(s), it must not!") |
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47 module_path = js_modules_path / f"{module_name}.py" |
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48 if isinstance(module_data, str): |
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49 module_data = {'path': module_data} |
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50 try: |
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51 js_path = module_data.pop('path') |
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52 except KeyError: |
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53 raise ValueError( |
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54 f'module data for {module_name} must have a "path" key') |
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55 module_data['path'] = Path('node_modules') / js_path.strip(' /') |
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56 export = module_data.get('export') or [module_name] |
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57 export_objects = '\n'.join(f'{e} = window.{e}' for e in export) |
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58 extra_kwargs = {"build_dir": C.BUILD_DIR} |
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59 |
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60 with module_path.open('w') as f: |
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61 f.write(f"""\ |
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62 #!/usr/bin/env python3 |
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63 from browser import window, load |
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64 {module_data.get('extra_import', '')} |
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65 |
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66 load("{Path('/').joinpath(C.BUILD_DIR, module_data['path'])}") |
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67 {export_objects} |
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68 {module_data.get('extra_init', '').format(**extra_kwargs)} |
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69 """) |