fix(logging): Avoid livelog ratelimit.

src/meta/logger.py

@@ -17,6 +17,7 @@ from .config import conf
 from . import sharding
 from .context import context
 from utils.lib import utc_now
+from utils.ratelimits import Bucket, BucketOverFull, BucketFull
 
 
 log_logger = logging.getLogger(__name__)
@@ -258,7 +259,7 @@ class LocalQueueHandler(QueueHandler):
 
 
 class WebHookHandler(logging.StreamHandler):
-    def __init__(self, webhook_url, prefix="", batch=False, loop=None):
+    def __init__(self, webhook_url, prefix="", batch=True, loop=None):
         super().__init__()
         self.webhook_url = webhook_url
         self.prefix = prefix
@@ -270,6 +271,12 @@ class WebHookHandler(logging.StreamHandler):
         self.last_batched = None
         self.waiting = []
 
+        self.bucket = Bucket(20, 40)
+        self.ignored = 0
+
+        self.session = None
+        self.webhook = None
+
     def get_loop(self):
         if self.loop is None:
             self.loop = asyncio.new_event_loop()
@@ -281,8 +288,14 @@ class WebHookHandler(logging.StreamHandler):
         self.get_loop().call_soon_threadsafe(self._post, record)
 
     def _post(self, record):
+        if self.session is None:
+            self.setup()
         asyncio.create_task(self.post(record))
 
+    def setup(self):
+        self.session = aiohttp.ClientSession()
+        self.webhook = Webhook.from_url(self.webhook_url, session=self.session)
+
     async def post(self, record):
         log_context.set("Webhook Logger")
         log_action_stack.set(("Logging",))
@@ -314,7 +327,7 @@ class WebHookHandler(logging.StreamHandler):
             else:
                 await self._send(message, as_file=as_file)
         except Exception as ex:
-            print(ex)
+            print(f"Unexpected error occurred while logging to webhook: {repr(ex)}", file=sys.stderr)
 
     async def _schedule_batched(self):
         if self.batch_task is not None and not (self.batch_task.done() or self.batch_task.cancelled()):
@@ -327,7 +340,7 @@ class WebHookHandler(logging.StreamHandler):
         except asyncio.CancelledError:
             return
         except Exception as ex:
-            print(ex)
+            print(f"Unexpected error occurred while scheduling batched webhook log: {repr(ex)}", file=sys.stderr)
 
     async def _send_batched_now(self):
         if self.batch_task is not None and not self.batch_task.done():
@@ -342,18 +355,36 @@ class WebHookHandler(logging.StreamHandler):
             await self._send(batched)
 
     async def _send(self, message, as_file=False):
-        async with aiohttp.ClientSession() as session:
-            webhook = Webhook.from_url(self.webhook_url, session=session)
-            if as_file or len(message) > 1900:
-                with StringIO(message) as fp:
-                    fp.seek(0)
-                    await webhook.send(
-                        f"{self.prefix}\n`{message.splitlines()[0]}`",
-                        file=File(fp, filename="logs.md"),
-                        username=log_app.get()
-                    )
-            else:
-                await webhook.send(self.prefix + '\n' + message, username=log_app.get())
+        try:
+            self.bucket.request()
+        except BucketOverFull:
+            # Silently ignore
+            self.ignored += 1
+            return
+        except BucketFull:
+            logger.warning(
+                f"Live logging webhook {self.webhook.id} going too fast! "
+                "Ignoring records until rate slows down."
+            )
+            self.ignored += 1
+            return
+        else:
+            if self.ignored > 0:
+                logger.warning(
+                    f"{self.ignored} live logging records on webhook {self.webhook.id} skipped, continuing."
+                )
+                self.ignored = 0
+
+        if as_file or len(message) > 1900:
+            with StringIO(message) as fp:
+                fp.seek(0)
+                await self.webhook.send(
+                    f"{self.prefix}\n`{message.splitlines()[0]}`",
+                    file=File(fp, filename="logs.md"),
+                    username=log_app.get()
+                )
+        else:
+            await self.webhook.send(self.prefix + '\n' + message, username=log_app.get())
 
 
 handlers = []
@@ -362,8 +393,8 @@ if webhook := conf.logging['general_log']:
     handlers.append(handler)
 
 if webhook := conf.logging['error_log']:
-    handler = WebHookHandler(webhook, prefix=conf.logging['error_prefix'], batch=False)
-    handler.setLevel(logging.ERROR)
+    handler = WebHookHandler(webhook, prefix=conf.logging['error_prefix'], batch=True)
+    handler.setLevel(logging.WARNING)
     handlers.append(handler)
 
 if webhook := conf.logging['critical_log']:

src/utils/ratelimits.py

@@ -67,9 +67,9 @@ class Bucket:
 
     def request(self):
         self._leak()
-        if self._level + 1 > self.max_level + 1:
+        if self._level > self.max_level:
             raise BucketOverFull
-        elif self._level + 1 > self.max_level:
+        elif self._level == self.max_level:
             self._level += 1
             if self._last_full:
                 raise BucketOverFull