Mercurial > libervia-web
annotate libervia/server/tasks/implicit/task_brython.py @ 1250:821b6ce57f99
server (tasks/brython): log an error if brython is missing and needed
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Mon, 27 Apr 2020 10:55:23 +0200 |
| parents | a6c7f07f1e4d |
| children | 6d49fae517ba |
| rev | line source |
|---|---|
| 1247 | 1 #!/ur/bin/env python3 |
| 2 | |
| 3 import shutil | |
| 4 import json | |
| 5 from pathlib import Path | |
| 6 from ast import literal_eval | |
| 7 from sat.core.i18n import _ | |
| 8 from sat.core.log import getLogger | |
| 9 from sat.core import exceptions | |
| 10 from sat.tools.common.template import safe | |
| 11 from libervia.server.constants import Const as C | |
| 12 from libervia.server.tasks import task | |
| 13 | |
| 14 | |
| 15 log = getLogger(__name__) | |
| 16 | |
| 17 | |
| 18 class Task(task.Task): | |
| 19 DOC_DIRS_DEFAULT = ('doc', 'docs') | |
| 20 | |
| 21 def prepare(self): | |
| 22 if "brython" not in self.resource.browser_modules: | |
| 23 raise exceptions.CancelError(f"No brython module found") | |
| 24 | |
| 25 brython_js = self.build_path / "brython.js" | |
| 26 if not brython_js.is_file(): | |
| 27 installed_ver = None | |
| 28 else: | |
| 29 with brython_js.open() as f: | |
| 30 for line in f: | |
| 31 if line.startswith('// implementation ['): | |
| 32 installed_ver = literal_eval(line[18:])[:3] | |
| 33 log.debug( | |
| 34 f"brython v{'.'.join(str(v) for v in installed_ver)} already " | |
| 35 f"installed") | |
| 36 break | |
| 37 else: | |
| 38 log.warning( | |
| 39 f"brython file at {brython_js} doesn't has implementation " | |
| 40 f"version" | |
| 41 ) | |
| 42 installed_ver = None | |
| 43 | |
|
1250
821b6ce57f99
server (tasks/brython): log an error if brython is missing and needed
Goffi <goffi@goffi.org>
parents:
1247
diff
changeset
|
44 try: |
|
821b6ce57f99
server (tasks/brython): log an error if brython is missing and needed
Goffi <goffi@goffi.org>
parents:
1247
diff
changeset
|
45 import brython |
|
821b6ce57f99
server (tasks/brython): log an error if brython is missing and needed
Goffi <goffi@goffi.org>
parents:
1247
diff
changeset
|
46 except ModuleNotFoundError as e: |
|
821b6ce57f99
server (tasks/brython): log an error if brython is missing and needed
Goffi <goffi@goffi.org>
parents:
1247
diff
changeset
|
47 log.error('"brython" module is missing, can\'t use browser code for Brython') |
|
821b6ce57f99
server (tasks/brython): log an error if brython is missing and needed
Goffi <goffi@goffi.org>
parents:
1247
diff
changeset
|
48 raise e |
| 1247 | 49 ver = [int(v) for v in brython.implementation.split('.')[:3]] |
| 50 if ver != installed_ver: | |
| 51 log.info(_("Installing Brython v{version}").format( | |
| 52 version='.'.join(str(v) for v in ver))) | |
| 53 data_path = Path(brython.__file__).parent / 'data' | |
| 54 # shutil has blocking method, but the task is run before we start | |
| 55 # the web server, so it's not a big deal | |
| 56 shutil.copyfile(data_path / "brython.js", brython_js) | |
| 57 else: | |
| 58 log.debug("Brython is already installed") | |
| 59 | |
| 60 self.WATCH_DIRS = [] | |
| 61 | |
| 62 for dyn_data in self.resource.browser_modules["brython"]: | |
| 63 url_hash = dyn_data['url_hash'] | |
| 64 import_url = f"/{C.BUILD_DIR}/{C.BUILD_DIR_DYN}/{url_hash}" | |
| 65 on_load_opts = { | |
| 66 "debug": 1, | |
| 67 "pythonpath": [import_url], | |
| 68 } | |
| 69 dyn_data['template'] = { | |
| 70 "scripts": [{"src": f"/{C.BUILD_DIR}/brython.js"}], | |
| 71 "body_onload": f"brython({json.dumps(on_load_opts)})", | |
| 72 } | |
| 73 self.WATCH_DIRS.append(dyn_data['path'].resolve()) | |
| 74 | |
| 75 def start(self): | |
| 76 dyn_path = self.build_path / C.BUILD_DIR_DYN | |
| 77 for dyn_data in self.resource.browser_modules["brython"]: | |
| 78 url_hash = dyn_data['url_hash'] | |
| 79 page_dyn_path = dyn_path / url_hash | |
| 80 if page_dyn_path.exists(): | |
| 81 log.debug("cleaning existing path") | |
| 82 shutil.rmtree(page_dyn_path) | |
| 83 | |
| 84 page_dyn_path.mkdir(parents=True, exist_ok=True) | |
| 85 log.debug("copying browser python files") | |
| 86 for p in dyn_data['path'].iterdir(): | |
| 87 log.debug(f"copying {p}") | |
| 88 if p.is_dir(): | |
| 89 shutil.copytree(p, page_dyn_path) | |
| 90 else: | |
| 91 shutil.copy(p, page_dyn_path) | |
| 92 | |
| 93 script = { | |
| 94 'type': 'text/python', | |
| 95 'src': f"/{C.BUILD_DIR}/{C.BUILD_DIR_DYN}/{url_hash}/__init__.py" | |
| 96 } | |
| 97 scripts = dyn_data['template']['scripts'] | |
| 98 if script not in scripts: | |
| 99 scripts.append(script) |