75 lines
2.5 KiB
Python
75 lines
2.5 KiB
Python
# © 2020 io mintz <io@mintz.cc>
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#
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# Emote Manager is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# Emote Manager is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with Emote Manager. If not, see <https://www.gnu.org/licenses/>.
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from multiprocessing.shared_memory import ShareableList
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from discord.ext import commands
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from bot_bin.stats import BotBinStats
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class Stats(BotBinStats):
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def __init__(self, bot):
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super().__init__(bot)
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seq = [0] * self.bot.shard_count if self.is_opener() else None
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# Use our user ID as part of the shm name
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# to allow running multiple instances of the bot on the same machine.
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# The shard count is incorporated to prevent the following situation:
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# - Shard count is increased in the launcher script / unit file from 30 to 33
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# - All clusters are restarted
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# - Clusters begin using the old 30-element-long list to store their shard counts,
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# but because some clusters that haven't restarted yet are still using the old shlist.
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shm_name = f'emote-manager-{self.bot.user_id}-{self.bot.shard_count}'
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self.shlist = ShareableList(seq, name=shm_name)
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self.count()
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def is_opener(self):
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"""return whether this is the process that should open the shared memory"""
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return 0 in self.bot.shard_ids
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def is_reporter(self):
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"""return whether we should report stats to the bot lists"""
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return self.bot.shard_count - 1 in self.bot.shard_ids
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def cog_unload(self):
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self.shlist.shm.close()
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if self.is_opener():
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self.shlist.shm.unlink()
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@commands.Cog.listener()
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async def on_ready(self):
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self.count()
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if self.is_reporter():
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await self.send()
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def count(self):
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for shard_id in self.bot.shard_ids:
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self.shlist[shard_id] = 0
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for guild in self.bot.guilds:
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self.shlist[guild.shard_id] += 1
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@commands.Cog.listener()
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async def on_guild_join(self, guild):
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self.shlist[guild.shard_id] += 1
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@commands.Cog.listener()
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async def on_guild_remove(self, guild):
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self.shlist[guild.shard_id] -= 1
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async def guild_count(self):
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return sum(self.shlist)
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def setup(bot):
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bot.add_cog(Stats(bot))
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