Mercurial > libervia-web
annotate libervia/web/server/tasks/implicit/task_brython.py @ 1561:7dbb131bbb9e
browser (calls): update status on various events (connection established, connection lost, etc.)
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Thu, 17 Aug 2023 14:58:21 +0200 |
| parents | eb00d593801d |
| children |
| rev | line source |
|---|---|
| 1247 | 1 #!/ur/bin/env python3 |
| 2 | |
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3 from ast import literal_eval |
| 1247 | 4 import json |
| 5 from pathlib import Path | |
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6 import shutil |
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7 from typing import Any, Dict |
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8 |
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9 from libervia.backend.core import exceptions |
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10 from libervia.backend.core.i18n import _ |
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11 from libervia.backend.core.log import getLogger |
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12 from libervia.backend.tools.common import utils |
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13 |
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14 from libervia.web.server.classes import Script |
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15 from libervia.web.server.constants import Const as C |
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16 from libervia.web.server.tasks import task |
| 1247 | 17 |
| 18 | |
| 19 log = getLogger(__name__) | |
| 20 | |
| 21 | |
| 22 class Task(task.Task): | |
| 23 | |
| 24 def prepare(self): | |
| 25 if "brython" not in self.resource.browser_modules: | |
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26 raise exceptions.CancelError("No brython module found") |
| 1247 | 27 |
| 28 brython_js = self.build_path / "brython.js" | |
| 29 if not brython_js.is_file(): | |
| 30 installed_ver = None | |
| 31 else: | |
| 32 with brython_js.open() as f: | |
| 33 for line in f: | |
| 34 if line.startswith('// implementation ['): | |
| 35 installed_ver = literal_eval(line[18:])[:3] | |
| 36 log.debug( | |
| 37 f"brython v{'.'.join(str(v) for v in installed_ver)} already " | |
| 38 f"installed") | |
| 39 break | |
| 40 else: | |
| 41 log.warning( | |
| 42 f"brython file at {brython_js} doesn't has implementation " | |
| 43 f"version" | |
| 44 ) | |
| 45 installed_ver = None | |
| 46 | |
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47 try: |
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48 import brython |
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49 try: |
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50 from brython.__main__ import implementation |
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51 except ImportError: |
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52 from brython.version import implementation |
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53 except ModuleNotFoundError as e: |
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54 log.error('"brython" module is missing, can\'t use browser code for Brython') |
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55 raise e |
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56 ver = [int(v) for v in implementation.split('.')[:3]] |
| 1247 | 57 if ver != installed_ver: |
| 58 log.info(_("Installing Brython v{version}").format( | |
| 59 version='.'.join(str(v) for v in ver))) | |
| 60 data_path = Path(brython.__file__).parent / 'data' | |
| 61 # shutil has blocking method, but the task is run before we start | |
| 62 # the web server, so it's not a big deal | |
| 63 shutil.copyfile(data_path / "brython.js", brython_js) | |
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64 shutil.copy(data_path / "brython_stdlib.js", self.build_path) |
| 1247 | 65 else: |
| 66 log.debug("Brython is already installed") | |
| 67 | |
| 68 self.WATCH_DIRS = [] | |
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69 self.set_common_scripts() |
| 1247 | 70 |
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71 def set_common_scripts(self): |
| 1247 | 72 for dyn_data in self.resource.browser_modules["brython"]: |
| 73 url_hash = dyn_data['url_hash'] | |
| 74 import_url = f"/{C.BUILD_DIR}/{C.BUILD_DIR_DYN}/{url_hash}" | |
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75 dyn_data.setdefault('scripts', utils.OrderedSet()).update([ |
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76 Script(src=f"/{C.BUILD_DIR}/brython.js"), |
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77 Script(src=f"/{C.BUILD_DIR}/brython_stdlib.js"), |
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78 ]) |
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79 dyn_data.setdefault('template', {})['body_onload'] = self.get_body_onload( |
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80 extra_path=[import_url]) |
| 1247 | 81 self.WATCH_DIRS.append(dyn_data['path'].resolve()) |
| 82 | |
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83 def get_body_onload(self, debug=True, cache=True, extra_path=None): |
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84 on_load_opts: Dict[str, Any] = {"pythonpath": [f"/{C.BUILD_DIR}"]} |
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85 if debug: |
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86 on_load_opts["debug"] = 1 |
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87 if cache: |
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88 on_load_opts["cache"] = True |
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89 if extra_path is not None: |
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90 on_load_opts["pythonpath"].extend(extra_path) |
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91 |
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92 return f"brython({json.dumps(on_load_opts)})" |
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93 |
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94 def copy_files(self, files_paths, dest): |
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95 for p in files_paths: |
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96 log.debug(f"copying {p}") |
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97 if p.is_dir(): |
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98 if p.name == '__pycache__': |
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99 continue |
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100 shutil.copytree(p, dest / p.name) |
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101 else: |
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102 shutil.copy(p, dest) |
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103 |
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104 async def on_dir_event(self, host, filepath, flags): |
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105 self.set_common_scripts() |
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106 await self.manager.run_task_instance(self) |
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107 |
| 1247 | 108 def start(self): |
| 109 dyn_path = self.build_path / C.BUILD_DIR_DYN | |
| 110 for dyn_data in self.resource.browser_modules["brython"]: | |
| 111 url_hash = dyn_data['url_hash'] | |
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112 if url_hash is None: |
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113 # root modules |
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114 url_prefix = dyn_data.get('url_prefix') |
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115 if url_prefix is None: |
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116 dest = self.build_path |
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117 init_dest_url = f"/{C.BUILD_DIR}/__init__.py" |
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118 else: |
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119 dest = self.build_path / url_prefix |
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120 dest.mkdir(exist_ok = True) |
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121 init_dest_url = f"/{C.BUILD_DIR}/{url_prefix}/__init__.py" |
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122 |
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123 self.copy_files(dyn_data['path'].glob('*py'), dest) |
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124 |
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125 init_file = dyn_data['path'] / '__init__.py' |
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126 if init_file.is_file(): |
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127 self.resource.dyn_data_common['scripts'].update([ |
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128 Script(src=f"/{C.BUILD_DIR}/brython.js"), |
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129 Script(src=f"/{C.BUILD_DIR}/brython_stdlib.js"), |
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130 Script(type='text/python', src=init_dest_url) |
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131 ]) |
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132 self.resource.dyn_data_common.setdefault( |
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133 "template", {})['body_onload'] = self.get_body_onload() |
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134 else: |
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135 page_dyn_path = dyn_path / url_hash |
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136 log.debug(f"using dynamic path at {page_dyn_path}") |
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137 if page_dyn_path.exists(): |
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138 log.debug("cleaning existing path") |
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139 shutil.rmtree(page_dyn_path) |
| 1247 | 140 |
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141 page_dyn_path.mkdir(parents=True, exist_ok=True) |
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142 log.debug("copying browser python files") |
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143 self.copy_files(dyn_data['path'].iterdir(), page_dyn_path) |
| 1247 | 144 |
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145 script = Script( |
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146 type='text/python', |
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pages, tasks (brython): use set for scripts + common template data:
Goffi <goffi@goffi.org>
parents:
1262
diff
changeset
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147 src=f"/{C.BUILD_DIR}/{C.BUILD_DIR_DYN}/{url_hash}/__init__.py" |
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e628724530ec
pages, tasks (brython): use set for scripts + common template data:
Goffi <goffi@goffi.org>
parents:
1262
diff
changeset
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148 ) |
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b61509c47cac
tasks (brython): fixed Brython scripts during dev mode reload
Goffi <goffi@goffi.org>
parents:
1335
diff
changeset
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149 dyn_data.setdefault('scripts', utils.OrderedSet()).add(script) |