hyperboria/nexus/actions/document_operations_pb/vote_pb.py

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from library.aiopostgres.pool_holder import AioPostgresPoolHolder
from nexus.models.proto.operation_pb2 import \
DocumentOperation as DocumentOperationPb
from pypika import (
PostgreSQLQuery,
Table,
)
from ..base import BaseAction
class ToPostgresAction(BaseAction):
votes_table = Table('votes')
def __init__(self, database):
super().__init__()
self.pool_holder = AioPostgresPoolHolder(
conninfo=f'dbname={database["database"]} '
f'user={database["username"]} '
f'password={database["password"]} '
f'host={database["host"]}',
max_size=2,
)
self.waits.append(self.pool_holder)
def generate_insert_sql(self, document_id: int, value: int, voter_id: int):
query = PostgreSQLQuery.into(self.votes_table).columns(
'document_id',
'value',
'voter_id',
).insert(
document_id,
value,
voter_id,
)
query = query.on_conflict('document_id', 'voter_id').do_update('value', value)
return query.get_sql()
async def do(self, document_operation_pb: DocumentOperationPb) -> DocumentOperationPb:
vote_pb = document_operation_pb.vote
sql = self.generate_insert_sql(
document_id=vote_pb.document_id,
value=vote_pb.value,
voter_id=vote_pb.voter_id,
)
await self.pool_holder.execute(sql)
return vote_pb