better database shutdown handling

v6d3music/core/queueaudio.py

@@ -47,9 +47,10 @@ class QueueAudio(discord.AudioSource):
     async def create(cls, guild: discord.Guild):
         return cls(guild, await QueueAudio.respawned(guild))
 
-    async def save(self):
+    async def save(self, delay: bool):
         hybernated = []
         for audio in list(self.queue):
+            if delay:
                 await asyncio.sleep(0.01)
             hybernated.append(audio.hybernate())
         queue_db.set_nowait(self.guild.id, hybernated)

v6d3music/run-bot.py

@@ -6,7 +6,6 @@ import time
 
 import discord
 from v6d1tokens.client import request_token
-from v6d2ctx.context import Benchmark, monitor
 from v6d2ctx.handle_content import handle_content
 from v6d2ctx.lock_for import lock_for
 from v6d2ctx.serve import serve
@@ -83,17 +82,19 @@ async def on_message(message: discord.Message) -> None:
     await handle_content(message, message.content, prefix)
 
 
-async def save_queues():
+async def save_queues(delay: bool):
     for mainasrc in list(mainasrcs.values()):
+        if delay:
             await asyncio.sleep(0.01)
-        await mainasrc.queue.save()
+        await mainasrc.queue.save(delay)
 
 
-async def save_vcs():
+async def save_vcs(delay: bool):
     if vcs_restored:
         vcs = []
         vc: discord.VoiceClient
         for vc in list(client.voice_clients):
+            if delay:
                 await asyncio.sleep(0.01)
             if vc.is_playing():
                 if vc.guild is not None and vc.channel is not None:
@@ -105,15 +106,23 @@ async def save_commit():
     await queue_db.set('commit', time.time())
 
 
+async def save_all(delay: bool):
+    await save_queues(delay)
+    await save_vcs(delay)
+    await save_commit()
+
+
 async def save_job():
     while True:
         await asyncio.sleep(1)
-        with Benchmark('SVQ'):
+        await save_all(True)
-            await save_queues()
+
-        with Benchmark('SVV'):
+
-            await save_vcs()
+async def save_daemon():
-        with Benchmark('SVC'):
+    try:
-            await save_commit()
+        await save_job()
+    except asyncio.CancelledError:
+        pass
 
 
 async def start_app():
@@ -121,7 +130,8 @@ async def start_app():
 
 
 async def setup_tasks():
-    loop.create_task(save_job())
+    global save_task
+    save_task = loop.create_task(save_daemon())
     loop.create_task(start_app())
 
 
@@ -139,14 +149,14 @@ async def main():
             token = await request_token('music', 'token')
         await client.login(token)
         loop.create_task(setup_tasks())
-        if os.getenv('v6monitor'):
-            loop.create_task(monitor())
         if os.getenv('v6tor', None) is None:
             try:
                 subprocess.Popen('tor')
             except FileNotFoundError:
                 print('no tor')
         await client.connect()
+        save_task.cancel()
+        await save_all(False)
 
 
 if __name__ == '__main__':