rewrite: Update meta.

bot/meta/LionBot.py

@@ -1,4 +1,4 @@
-from typing import List
+from typing import List, Optional, TYPE_CHECKING
 import logging
 import asyncio
 
@@ -18,12 +18,15 @@ from .LionContext import LionContext
 from .LionTree import LionTree
 from .errors import HandledException, SafeCancellation
 
+if TYPE_CHECKING:
+    from core import CoreCog
+
 logger = logging.getLogger(__name__)
 
 
 class LionBot(Bot):
     def __init__(
-        self, *args, appname: str, db: Database, config: Conf,
+        self, *args, appname: str, shardname: str, db: Database, config: Conf,
         initial_extensions: List[str], web_client: ClientSession, app_ipc,
         testing_guilds: List[int] = [], **kwargs
     ):
@@ -34,9 +37,11 @@ class LionBot(Bot):
         self.initial_extensions = initial_extensions
         self.db = db
         self.appname = appname
+        self.shardname = shardname
 #        self.appdata = appdata
         self.config = config
         self.app_ipc = app_ipc
+        self.core: Optional['CoreCog'] = None
 
     async def setup_hook(self) -> None:
         log_context.set(f"APP: {self.application_id}")
@@ -72,10 +77,11 @@ class LionBot(Bot):
         logger.info(
             f"Logged in as {self.application.name}\n"
             f"Application id {self.application.id}\n"
-            f"Shard Talk identifier {self.appname}\n"
+            f"Shard Talk identifier {self.shardname}\n"
             "------------------------------\n"
             f"Enabled Modules: {', '.join(self.extensions.keys())}\n"
             f"Loaded Cogs: {', '.join(self.cogs.keys())}\n"
+            f"Registered Data: {', '.join(self.db.registries.keys())}\n"
             f"Listening for {sum(1 for _ in self.walk_commands())} commands\n"
             "------------------------------\n"
             f"Logged in to {len(self.guilds)} guilds on shard {self.shard_id} of {self.shard_count}\n"

bot/meta/LionCog.py

@@ -2,4 +2,12 @@ from discord.ext.commands import Cog
 
 
 class LionCog(Cog):
-    ...
+    # A set of other cogs that this cog depends on
+    depends_on: set['LionCog'] = set()
+
+    async def _inject(self, bot, *args, **kwargs):
+        if self.depends_on:
+            not_found = {cogname for cogname in self.depends_on if not bot.get_cog(cogname)}
+            raise ValueError(f"Could not load cog '{self.__class__.__name__}', dependencies missing: {not_found}")
+
+        return await super()._inject(bot, *args, *kwargs)

bot/meta/LionContext.py

@@ -1,11 +1,14 @@
 import types
 import logging
 from collections import namedtuple
-from typing import Optional
+from typing import Optional, TYPE_CHECKING
 
 import discord
 from discord.ext.commands import Context
 
+if TYPE_CHECKING:
+    from .LionBot import LionBot
+
 
 logger = logging.getLogger(__name__)
 
@@ -34,7 +37,7 @@ FlatContext = namedtuple(
 )
 
 
-class LionContext(Context):
+class LionContext(Context['LionBot']):
     """
     Represents the context a command is invoked under.
 

bot/meta/__init__.py

@@ -1,7 +1,15 @@
 from .LionBot import LionBot
-from .config import conf
+from .LionCog import LionCog
+from .LionContext import LionContext
+from .LionTree import LionTree
+
+from .logger import logging_context, log_wrap, log_action_stack, log_context, log_app
+from .config import conf, configEmoji
 from .args import args
-from .app import appname, shard_talk
+from .app import appname, shard_talk, appname_from_shard, shard_from_appname
+from .errors import HandledException, UserInputError, ResponseTimedOut, SafeCancellation, UserCancelled
+from .context import context, ctx_bot
+
 from . import sharding
 from . import logger
 from . import app

bot/meta/app.py

@@ -1,9 +1,24 @@
+"""
+appname: str
+    The base identifer for this application.
+    This identifies which services the app offers.
+shardname: str
+    The specific name of the running application.
+    Only one process should be connecteded with a given appname.
+    For the bot apps, usually specifies the shard id and shard number.
+"""
+# TODO: Find a better schema for these. We use appname for shard_talk, do we need it for data?
+
 from . import sharding, conf
 from .logger import log_app
 from .ipc.client import AppClient
 from .args import args
 
 
+appname = conf.data['appid']
+appid = appname  # backwards compatibility
+
+
 def appname_from_shard(shardid):
     appname = f"{conf.data['appid']}_{sharding.shard_count:02}_{shardid:02}"
     return appname
@@ -13,16 +28,13 @@ def shard_from_appname(appname: str):
     return int(appname.rsplit('_', maxsplit=1)[-1])
 
 
-if sharding.sharded:
+shardname = appname_from_shard(sharding.shard_number)
-    appname = appname_from_shard(sharding.shard_number)
-else:
-    appname = conf.data['appid']
 
-log_app.set(appname)
+log_app.set(shardname)
 
 
 shard_talk = AppClient(
-    appname,
+    shardname,
     {'host': args.host, 'port': args.port},
     {'host': conf.appipc['server_host'], 'port': int(conf.appipc['server_port'])}
 )

bot/meta/context.py

@@ -14,7 +14,7 @@ if TYPE_CHECKING:
 
 
 # Contains the current command context, if applicable
-context: Optional['LionContext'] = ContextVar('context', default=None)
+context: ContextVar[Optional['LionContext']] = ContextVar('context', default=None)
 
 # Contains the current LionBot instance
-ctx_bot: Optional['LionBot'] = ContextVar('bot', default=None)
+ctx_bot: ContextVar[Optional['LionBot']] = ContextVar('bot', default=None)

bot/meta/errors.py

@@ -1,4 +1,5 @@
 from typing import Optional
+from string import Template
 
 
 class SafeCancellation(Exception):
@@ -12,8 +13,12 @@ class SafeCancellation(Exception):
     """
     default_message = ""
 
-    def __init__(self, msg: Optional[str] = None, details: Optional[str] = None, **kwargs):
+    @property
-        self.msg: Optional[str] = msg if msg is not None else self.default_message
+    def msg(self):
+        return self._msg if self._msg is not None else self.default_message
+
+    def __init__(self, _msg: Optional[str] = None, details: Optional[str] = None, **kwargs):
+        self._msg: Optional[str] = _msg
         self.details: str = details if details is not None else self.msg
         super().__init__(**kwargs)
 
@@ -24,6 +29,14 @@ class UserInputError(SafeCancellation):
     """
     default_message = "Could not understand your input."
 
+    @property
+    def msg(self):
+        return Template(self._msg).substitute(**self.info) if self._msg is not None else self.default_message
+
+    def __init__(self, _msg: Optional[str] = None, info: dict[str, str] = {}, **kwargs):
+        self.info = info
+        super().__init__(_msg, **kwargs)
+
 
 class UserCancelled(SafeCancellation):
     """

bot/meta/ipc/client.py

@@ -3,6 +3,8 @@ import asyncio
 import logging
 import pickle
 
+from ..logger import logging_context
+
 
 logger = logging.getLogger(__name__)
 
@@ -22,6 +24,7 @@ class AppClient:
 
         self._listener: Optional[asyncio.Server] = None  # Local client server
         self._server = None  # Connection to the registry server
+        self._keepalive = None
 
         self.register_route('new_peer')(self.new_peer)
         self.register_route('drop_peer')(self.drop_peer)
@@ -29,7 +32,7 @@ class AppClient:
 
     def register_route(self, name=None):
         def wrapper(coro):
-            route = AppRoute(coro, name)
+            route = AppRoute(coro, client=self, name=name)
             self.routes[route.name] = route
             return route
         return wrapper
@@ -49,14 +52,21 @@ class AppClient:
             self.peers = peers
             self._server = (reader, writer)
         except Exception:
-            logger.exception("Could not connect to registry server. Trying again in 30 seconds.")
+            logger.exception(
+                "Could not connect to registry server. Trying again in 30 seconds.",
+                extra={'action': 'Connect'}
+            )
             await asyncio.sleep(30)
             asyncio.create_task(self.server_connection())
         else:
-            logger.info("Connected to the registry server, launching keepalive.")
+            logger.debug(
-            asyncio.create_task(self._server_keepalive())
+                "Connected to the registry server, launching keepalive.",
+                extra={'action': 'Connect'}
+            )
+            self._keepalive = asyncio.create_task(self._server_keepalive())
 
     async def _server_keepalive(self):
+        with logging_context(action='Keepalive'):
             if self._server is None:
                 raise ValueError("Cannot keepalive non-existent server!")
             reader, write = self._server
@@ -85,6 +95,7 @@ class AppClient:
         ...
 
     async def request(self, appid, payload: 'AppPayload'):
+        with logging_context(action=f"Req {appid}"):
             try:
                 if appid not in self.peers:
                     raise ValueError(f"Peer '{appid}' not found.")
@@ -104,15 +115,21 @@ class AppClient:
                 logging.exception(f"Failed to send request to {appid}'")
                 return None
 
-    async def requestall(self, payload):
+    async def requestall(self, payload, except_self=True):
-        results = await asyncio.gather(*(self.request(appid, payload) for appid in self.peers))
+        with logging_context(action="Broadcast"):
+            results = await asyncio.gather(
+                *(self.request(appid, payload) for appid in self.peers if (appid != self.appid or not except_self)),
+                return_exceptions=True
+            )
             return dict(zip(self.peers.keys(), results))
 
     async def handle_request(self, reader, writer):
+        with logging_context(action="SERV"):
             data = await reader.read()
             loaded = pickle.loads(data)
             route, args, kwargs = loaded
 
+        with logging_context(action=f"SERV {route}"):
             logger.debug(f"AppClient {self.appid} handling request on route '{route}' with args {args} and kwargs {kwargs}")
 
             if route in self.routes:
@@ -129,6 +146,7 @@ class AppClient:
         Start the local peer server.
         Connect to the address server.
         """
+        with logging_context(stack=['ShardTalk']):
             # Start the client server
             self._listener = await asyncio.start_server(self.handle_request, **self.address, start_serving=True)
 
@@ -150,13 +168,20 @@ class AppPayload:
     def encoded(self):
         return pickle.dumps((self.route.name, self.args, self.kwargs))
 
+    async def send(self, appid, **kwargs):
+        return await self.route._client.request(appid, self, **kwargs)
+
+    async def broadcast(self, **kwargs):
+        return await self.route._client.requestall(self, **kwargs)
+
 
 class AppRoute:
-    __slots__ = ('func', 'name')
+    __slots__ = ('func', 'name', '_client')
 
-    def __init__(self, func, name=None):
+    def __init__(self, func, client=None, name=None):
         self.func = func
         self.name = name or func.__name__
+        self._client = client
 
     def __call__(self, *args, **kwargs):
         return AppPayload(self, *args, **kwargs)

bot/meta/logger.py

@@ -6,8 +6,9 @@ from logging.handlers import QueueListener, QueueHandler
 from queue import SimpleQueue
 from contextlib import contextmanager
 from io import StringIO
-
+from functools import wraps
 from contextvars import ContextVar
+
 from discord import Webhook, File
 import aiohttp
 
@@ -46,6 +47,16 @@ def logging_context(context=None, action=None, stack=None):
             log_action_stack.set(astack)
 
 
+def log_wrap(**kwargs):
+    def decorator(func):
+        @wraps(func)
+        async def wrapped(*w_args, **w_kwargs):
+            with logging_context(**kwargs):
+                return await func(*w_args, **w_kwargs)
+        return wrapped
+    return decorator
+
+
 RESET_SEQ = "\033[0m"
 COLOR_SEQ = "\033[3%dm"
 BOLD_SEQ = "\033[1m"