Mercurial > libervia-web
annotate libervia/server/tasks/implicit/task_brython.py @ 1296:b1215347b5c3
pages (bridge): better handling of errors:
when a BridgeError is catched, set a PROXY_ERROR code, and build a JSON object from the
exception.
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Fri, 19 Jun 2020 16:47:51 +0200 |
| parents | 0e4e413eb8db |
| children | 089742e065e3 |
| 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 | |
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10 from sat.tools.common import utils |
| 1247 | 11 from libervia.server.constants import Const as C |
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12 from libervia.server.classes import Script |
| 1247 | 13 from libervia.server.tasks import task |
| 14 | |
| 15 | |
| 16 log = getLogger(__name__) | |
| 17 | |
| 18 | |
| 19 class Task(task.Task): | |
| 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 | |
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44 try: |
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45 import brython |
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46 except ModuleNotFoundError as e: |
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47 log.error('"brython" module is missing, can\'t use browser code for Brython') |
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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) | |
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57 shutil.copy(data_path / "brython_stdlib.js", self.build_path) |
| 1247 | 58 else: |
| 59 log.debug("Brython is already installed") | |
| 60 | |
| 61 self.WATCH_DIRS = [] | |
| 62 | |
| 63 for dyn_data in self.resource.browser_modules["brython"]: | |
| 64 url_hash = dyn_data['url_hash'] | |
| 65 import_url = f"/{C.BUILD_DIR}/{C.BUILD_DIR_DYN}/{url_hash}" | |
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66 dyn_data.setdefault('scripts', utils.OrderedSet()).update([ |
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67 Script(src=f"/{C.BUILD_DIR}/brython.js"), |
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68 Script(src=f"/{C.BUILD_DIR}/brython_stdlib.js"), |
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69 ]) |
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70 dyn_data.setdefault('template', {})['body_onload'] = self.getBodyOnload( |
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71 extra_path=[import_url]) |
| 1247 | 72 self.WATCH_DIRS.append(dyn_data['path'].resolve()) |
| 73 | |
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74 def getBodyOnload(self, debug=True, cache=True, extra_path=None): |
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75 on_load_opts = {"pythonpath": [f"/{C.BUILD_DIR}"]} |
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76 if debug: |
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77 on_load_opts[debug] = 1 |
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78 if cache: |
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79 on_load_opts["cache"] = True |
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80 if extra_path is not None: |
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81 on_load_opts["pythonpath"].extend(extra_path) |
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82 |
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83 return f"brython({json.dumps(on_load_opts)})" |
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84 |
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85 def copyFiles(self, files_paths, dest): |
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86 for p in files_paths: |
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87 log.debug(f"copying {p}") |
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88 if p.is_dir(): |
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89 shutil.copytree(p, dest) |
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90 else: |
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91 shutil.copy(p, dest) |
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92 |
| 1247 | 93 def start(self): |
| 94 dyn_path = self.build_path / C.BUILD_DIR_DYN | |
| 95 for dyn_data in self.resource.browser_modules["brython"]: | |
| 96 url_hash = dyn_data['url_hash'] | |
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97 if url_hash is None: |
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98 # root modules |
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99 url_prefix = dyn_data.get('url_prefix') |
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100 if url_prefix is None: |
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101 dest = self.build_path |
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102 init_dest_url = f"/{C.BUILD_DIR}/__init__.py" |
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103 else: |
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104 dest = self.build_path / url_prefix |
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105 dest.mkdir(exist_ok = True) |
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106 init_dest_url = f"/{C.BUILD_DIR}/{url_prefix}/__init__.py" |
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107 |
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108 self.copyFiles(dyn_data['path'].glob('*py'), dest) |
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109 |
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110 init_file = dyn_data['path'] / '__init__.py' |
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111 if init_file.is_file(): |
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112 self.resource.dyn_data_common['scripts'].update([ |
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113 Script(src=f"/{C.BUILD_DIR}/brython.js"), |
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114 Script(type='text/python', src=init_dest_url) |
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115 ]) |
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116 self.resource.dyn_data_common.setdefault( |
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117 "template", {})['body_onload'] = self.getBodyOnload() |
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118 else: |
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119 page_dyn_path = dyn_path / url_hash |
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120 if page_dyn_path.exists(): |
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121 log.debug("cleaning existing path") |
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122 shutil.rmtree(page_dyn_path) |
| 1247 | 123 |
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124 page_dyn_path.mkdir(parents=True, exist_ok=True) |
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125 log.debug("copying browser python files") |
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126 self.copyFiles(dyn_data['path'].iterdir(), page_dyn_path) |
| 1247 | 127 |
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128 script = Script( |
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129 type='text/python', |
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130 src=f"/{C.BUILD_DIR}/{C.BUILD_DIR_DYN}/{url_hash}/__init__.py" |
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131 ) |
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132 dyn_data['scripts'].add(script) |