fix (voice): Fix data preconditions.

Fixes issue where voice session would start without member data.
Fixes issue where voice session would start without channel data.
Fixes issue on init where sessions would start without keys.
Fixes issue on guild join where sessions would start without keys.
Fixes issue in schedule where data cache key was built incorrectly.

src/tracking/voice/cog.py

@@ -247,6 +247,16 @@ class VoiceTrackerCog(LionCog):
                             ))
                 # Bulk create the ongoing sessions
                 if to_create:
+                    # First ensure the lion members exist
+                    await self.bot.core.lions.fetch_members(
+                        *(item[:2] for item in to_create)
+                    )
+
+                    # Then ensure the TrackedChannels exist
+                    cids = set((item[2], item[0]) for item in to_create)
+                    await self.data.TrackedChannel.fetch_multiple(*cids)
+
+                    # Then actually create the ongoing sessions
                     rows = await self.data.VoiceSessionsOngoing.table.insert_many(
                         ('guildid', 'userid', 'channelid', 'start_time', 'last_update', 'live_stream',
                          'live_video', 'hourly_coins'),
@@ -415,6 +425,16 @@ class VoiceTrackerCog(LionCog):
                     ))
 
             if to_create:
+                # Ensure LionMembers exist
+                await self.bot.core.lions.fetch_members(
+                    *(item[:2] for item in to_create)
+                )
+
+                # Ensure TrackedChannels exist
+                cids = set((item[2], item[0]) for item in to_create)
+                await self.data.TrackedChannel.fetch_multiple(*cids)
+
+                # Create new sessions
                 rows = await self.data.VoiceSessionsOngoing.table.insert_many(
                     ('guildid', 'userid', 'channelid', 'start_time', 'last_update', 'live_stream',
                         'live_video', 'hourly_coins'),
@@ -567,6 +587,16 @@ class VoiceTrackerCog(LionCog):
                     ))
 
             if to_create:
+                # Ensure LionMembers exist
+                await self.bot.core.lions.fetch_members(
+                    *(item[:2] for item in to_create)
+                )
+
+                # Ensure TrackedChannels exist
+                cids = set((item[2], item[0]) for item in to_create)
+                await self.data.TrackedChannel.fetch_multiple(*cids)
+
+                # Create new sessions
                 rows = await self.data.VoiceSessionsOngoing.table.insert_many(
                     ('guildid', 'userid', 'channelid', 'start_time', 'last_update', 'live_stream',
                         'live_video', 'hourly_coins'),
@@ -599,7 +629,8 @@ class VoiceTrackerCog(LionCog):
                 if session.expiry_task is not None:
                     session.expiry_task.cancel()
                 to_close.append(session.guildid, session.userid, now)
-            await self.data.VoiceSessionsOngoing.close_voice_sessions_at(*to_close)
+            if to_close:
+                await self.data.VoiceSessionsOngoing.close_voice_sessions_at(*to_close)
             logger.info(
                 f"Closed {len(to_close)} voice sessions after leaving guild '{guild.name}' <gid:{guild.id}>"
             )

src/tracking/voice/data.py

@@ -37,6 +37,39 @@ class VoiceTrackerData(Registry):
         deleted = Bool()
         _timestamp = Timestamp()
 
+        @classmethod
+        async def fetch_multiple(cls, *keys, create=True):
+            """
+            Fetch and optionally create multiple row, applying cache where possible.
+
+            Provided keys should be in the form (channelid, guildid)
+            Results will be provided as a map channelid -> Row
+            """
+            cidmap = {cid: gid for cid, gid in keys}
+
+            results = {}
+            to_fetch = set()
+            for cid in cidmap:
+                row = cls._cache_.get((cid,), None)
+                if row is None or row.data is None:
+                    to_fetch.add(cid)
+                else:
+                    results[cid] = row
+
+            if to_fetch:
+                rows = await cls.fetch_where(channelid=list(cidmap.keys()))
+                for row in rows:
+                    results[row.channelid] = row
+                    to_fetch.remove(row.channelid)
+            if to_fetch and create:
+                rows = await cls.table.insert_many(
+                    ('channelid', 'guildid', 'deleted'),
+                    *((cid, cidmap[cid], False) for cid in to_fetch)
+                ).with_adapter(cls._make_rows)
+                for row in rows:
+                    results[row.channelid] = row
+            return results
+
     class VoiceSessionsOngoing(RowModel):
         """
         Model describing currently active voice sessions.

src/tracking/voice/session.py

@@ -153,14 +153,16 @@ class VoiceSession:
             f"Starting voice session for member <uid:{self.userid}> in guild <gid:{self.guildid}> "
             f"and channel <cid:{self.state.channelid}>."
         )
+        # Create the lion if required
+        await self.bot.core.lions.fetch_member(self.guildid, self.userid)
+
+        # Create the tracked channel if required
+        await self.registry.TrackedChannel.fetch_or_create(
+            self.state.channelid, guildid=self.guildid, deleted=False
+        )
 
         conn = await self.bot.db.get_connection()
         async with conn.transaction():
-            # Create the tracked channel if required
-            await self.registry.TrackedChannel.fetch_or_create(
-                self.state.channelid, guildid=self.guildid, deleted=False
-            )
-
             # Insert an ongoing_session with the correct state, set data
             state = self.state
             self.data = await self.registry.VoiceSessionsOngoing.create(