1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
|
from __future__ import annotations
from asyncio import AbstractEventLoop, Queue, sleep
from logging import getLogger
from os import listdir, path
from pathlib import Path
from traceback import format_exc, print_exc
from typing import Any, Tuple, Dict, cast
from aiohttp import web
from os.path import exists
from watchdog.events import RegexMatchingEventHandler, DirCreatedEvent, DirModifiedEvent, FileCreatedEvent, FileModifiedEvent
from watchdog.observers import Observer
from typing import TYPE_CHECKING, List
if TYPE_CHECKING:
from .main import PluginManager
from .plugin.plugin import PluginWrapper
from .wsrouter import WSRouter
from .enums import PluginLoadType
Plugins = dict[str, PluginWrapper]
ReloadQueue = Queue[Tuple[str, str, bool | None] | Tuple[str, str]]
class FileChangeHandler(RegexMatchingEventHandler):
def __init__(self, queue: ReloadQueue, plugin_path: str) -> None:
super().__init__(regexes=[r'^.*?dist\/index\.js$', r'^.*?main\.py$']) # pyright: ignore [reportUnknownMemberType]
self.logger = getLogger("file-watcher")
self.plugin_path = plugin_path
self.queue = queue
self.disabled = True
def maybe_reload(self, src_path: str):
if self.disabled:
return
plugin_dir = Path(path.relpath(src_path, self.plugin_path)).parts[0]
if exists(path.join(self.plugin_path, plugin_dir, "plugin.json")):
self.queue.put_nowait((path.join(self.plugin_path, plugin_dir, "main.py"), plugin_dir, True))
def on_created(self, event: DirCreatedEvent | FileCreatedEvent): # pyright: ignore [reportIncompatibleMethodOverride]
src_path = cast(str, event.src_path) # type: ignore the correct type for this is in later versions of watchdog
if "__pycache__" in src_path:
return
# check to make sure this isn't a directory
if path.isdir(src_path):
return
# get the directory name of the plugin so that we can find its "main.py" and reload it; the
# file that changed is not necessarily the one that needs to be reloaded
self.logger.debug(f"file created: {src_path}")
self.maybe_reload(src_path)
def on_modified(self, event: DirModifiedEvent | FileModifiedEvent): # pyright: ignore [reportIncompatibleMethodOverride]
src_path = cast(str, event.src_path) # type: ignore
if "__pycache__" in src_path:
return
# check to make sure this isn't a directory
if path.isdir(src_path):
return
# get the directory name of the plugin so that we can find its "main.py" and reload it; the
# file that changed is not necessarily the one that needs to be reloaded
self.logger.debug(f"file modified: {src_path}")
self.maybe_reload(src_path)
class Loader:
def __init__(self, server_instance: PluginManager, ws: WSRouter, plugin_path: str, loop: AbstractEventLoop, live_reload: bool = False) -> None:
self.loop = loop
self.logger = getLogger("Loader")
self.ws = ws
self.plugin_path = plugin_path
self.logger.info(f"plugin_path: {self.plugin_path}")
self.plugins: Plugins = {}
self.watcher = None
self.live_reload = live_reload
self.reload_queue: ReloadQueue = Queue()
self.loop.create_task(self.handle_reloads())
if live_reload:
self.observer = Observer()
self.watcher = FileChangeHandler(self.reload_queue, plugin_path)
self.observer.schedule(self.watcher, self.plugin_path, recursive=True) # pyright: ignore [reportUnknownMemberType]
self.observer.start()
self.loop.create_task(self.enable_reload_wait())
server_instance.web_app.add_routes([
web.get("/frontend/{path:.*}", self.handle_frontend_assets),
web.get("/locales/{path:.*}", self.handle_frontend_locales),
web.get("/plugins/{plugin_name}/frontend_bundle", self.handle_frontend_bundle),
web.get("/plugins/{plugin_name}/dist/{path:.*}", self.handle_plugin_dist),
web.get("/plugins/{plugin_name}/assets/{path:.*}", self.handle_plugin_frontend_assets),
])
server_instance.ws.add_route("loader/get_plugins", self.get_plugins)
server_instance.ws.add_route("loader/reload_plugin", self.handle_plugin_backend_reload)
server_instance.ws.add_route("loader/call_plugin_method", self.handle_plugin_method_call)
server_instance.ws.add_route("loader/call_legacy_plugin_method", self.handle_plugin_method_call_legacy)
async def enable_reload_wait(self):
if self.live_reload:
await sleep(10)
if self.watcher:
self.logger.info("Hot reload enabled")
self.watcher.disabled = False
async def handle_frontend_assets(self, request: web.Request):
file = Path(__file__).parents[1].joinpath("static").joinpath(request.match_info["path"])
return web.FileResponse(file, headers={"Cache-Control": "no-cache"})
async def handle_frontend_locales(self, request: web.Request):
req_lang = request.match_info["path"]
file = Path(__file__).parents[1].joinpath("locales").joinpath(req_lang)
if exists(file):
return web.FileResponse(file, headers={"Cache-Control": "no-cache", "Content-Type": "application/json"})
else:
self.logger.info(f"Language {req_lang} not available, returning an empty dictionary")
return web.json_response(data={}, headers={"Cache-Control": "no-cache"})
async def get_plugins(self):
plugins = list(self.plugins.values())
return [{"name": str(i), "version": i.version, "load_type": i.load_type} for i in plugins]
async def handle_plugin_dist(self, request: web.Request):
plugin = self.plugins[request.match_info["plugin_name"]]
file = path.join(self.plugin_path, plugin.plugin_directory, "dist", request.match_info["path"])
return web.FileResponse(file, headers={"Cache-Control": "no-cache"})
async def handle_plugin_frontend_assets(self, request: web.Request):
plugin = self.plugins[request.match_info["plugin_name"]]
file = path.join(self.plugin_path, plugin.plugin_directory, "dist/assets", request.match_info["path"])
return web.FileResponse(file, headers={"Cache-Control": "no-cache"})
async def handle_frontend_bundle(self, request: web.Request):
plugin = self.plugins[request.match_info["plugin_name"]]
with open(path.join(self.plugin_path, plugin.plugin_directory, "dist/index.js"), "r", encoding="utf-8") as bundle:
return web.Response(text=bundle.read(), content_type="application/javascript")
def import_plugin(self, file: str, plugin_directory: str, refresh: bool | None = False, batch: bool | None = False):
try:
async def plugin_emitted_event(event: str, args: Any):
self.logger.debug(f"PLUGIN EMITTED EVENT: {event} with args {args}")
await self.ws.emit(f"loader/plugin_event", {plugin:plugin.name, event:event, args:args})
plugin = PluginWrapper(file, plugin_directory, self.plugin_path, plugin_emitted_event)
if plugin.name in self.plugins:
if not "debug" in plugin.flags and refresh:
self.logger.info(f"Plugin {plugin.name} is already loaded and has requested to not be re-loaded")
return
else:
self.plugins[plugin.name].stop()
self.plugins.pop(plugin.name, None)
if plugin.passive:
self.logger.info(f"Plugin {plugin.name} is passive")
self.plugins[plugin.name] = plugin.start()
self.logger.info(f"Loaded {plugin.name}")
if not batch:
self.loop.create_task(self.dispatch_plugin(plugin.name, plugin.version))
except Exception as e:
self.logger.error(f"Could not load {file}. {e}")
print_exc()
async def dispatch_plugin(self, name: str, version: str | None, load_type: int = PluginLoadType.ESMODULE_V1.value):
await self.ws.emit("loader/import_plugin", name, version, load_type)
def import_plugins(self):
self.logger.info(f"import plugins from {self.plugin_path}")
directories = [i for i in listdir(self.plugin_path) if path.isdir(path.join(self.plugin_path, i)) and path.isfile(path.join(self.plugin_path, i, "plugin.json"))]
for directory in directories:
self.logger.info(f"found plugin: {directory}")
self.import_plugin(path.join(self.plugin_path, directory, "main.py"), directory, False, True)
async def handle_reloads(self):
while True:
args = await self.reload_queue.get()
self.import_plugin(*args) # pyright: ignore [reportArgumentType]
async def handle_plugin_method_call_legacy(self, plugin_name: str, method_name: str, kwargs: Dict[Any, Any]):
res: Dict[Any, Any] = {}
plugin = self.plugins[plugin_name]
try:
if method_name.startswith("_"):
raise RuntimeError(f"Plugin {plugin.name} tried to call private method {method_name}")
res["result"] = await plugin.execute_legacy_method(method_name, kwargs)
res["success"] = True
except Exception as e:
res["result"] = str(e)
res["success"] = False
return res
async def handle_plugin_method_call(self, plugin_name: str, method_name: str, *args: List[Any]):
plugin = self.plugins[plugin_name]
try:
if method_name.startswith("_"):
raise RuntimeError(f"Plugin {plugin.name} tried to call private method {method_name}")
result = await plugin.execute_method(method_name, *args)
except Exception as e:
self.logger.error(f"Method {method_name} of plugin {plugin.name} failed with the following exception:\n{format_exc()}")
raise e # throw again to pass the error to the frontend
return result
async def handle_plugin_backend_reload(self, plugin_name: str):
plugin = self.plugins[plugin_name]
await self.reload_queue.put((plugin.file, plugin.plugin_directory))
|
