Add WIP example of database usage in bot

This commit is contained in:
Tulir Asokan 2019-01-16 11:40:51 +02:00
parent 9d38c43576
commit 92c9072257
3 changed files with 50 additions and 0 deletions

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@ -4,3 +4,4 @@ All examples are published under the [MIT license](LICENSE).
* [Hello World](helloworld/) - Very basic event handling bot that responds "Hello, World!" to all messages.
* [Echo bot](https://github.com/maubot/echo) - Basic command handling bot with !echo and !ping commands
* [Config example](config/) - Simple example of using a config file
* [Database example](database/) - Simple example of using a database

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@ -0,0 +1,39 @@
from typing import Type
from sqlalchemy import Column, String, Text, Table, MetaData, orm, func
from mautrix.types import EventType
from maubot import Plugin, MessageEvent
from maubot.handlers import event, command
class DatabaseBot(Plugin):
db: orm.Session
events: Type[Table]
async def start(self) -> None:
await super().start()
db_factory = orm.sessionmaker(bind=self.database)
self.db = orm.scoped_session(db_factory)
table_meta = MetaData(bind=self.db)
self.events = Table("event", table_meta,
Column("room_id", String(255), primary_key=True),
Column("event_id", String(255), primary_key=True),
Column("sender", String(255)),
Column("body", Text))
# In the future, there will be a proper way to include Alembic upgrades in plugins.
table_meta.create_all()
@event.on(EventType.ROOM_MESSAGE)
async def handler(self, event: MessageEvent) -> None:
self.db.add(self.events(room_id=event.room_id, event_id=event.event_id,
sender=event.sender, body=event.content.body))
@command.new("stats")
async def find(self, _: MessageEvent) -> None:
res = (self.db
.query(func.sum(self.events.event_id))
.group_by(self.events.room_id, self.events.sender)
.all())
print(res)

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@ -0,0 +1,10 @@
maubot: 0.1.0
id: xyz.maubot.databasebot
version: 1.0.0
license: MIT
modules:
- databasebot
main_class: DatabaseBot
# This is required for a database to be available.
database: true