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Fix race conditions and duplicate stars in starboard

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This commit is contained in:
Dragory 2020-12-23 05:28:21 +02:00
parent 1484f6b9a7
commit e1e1854041
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5 changed files with 63 additions and 9 deletions
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26
backend/src/migrations/1608692857722-FixStarboardReactionsIndices.ts Normal file
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import { MigrationInterface, QueryRunner, TableIndex, TableUnique } from "typeorm";
export class FixStarboardReactionsIndices1608692857722 implements MigrationInterface {
public async up(queryRunner: QueryRunner): Promise<any> {
// Remove previously-added duplicate stars
await queryRunner.query(`
DELETE r1.* FROM starboard_reactions AS r1
INNER JOIN starboard_reactions AS r2
ON r2.guild_id = r1.guild_id AND r2.message_id = r1.message_id AND r2.reactor_id = r1.reactor_id AND r2.id < r1.id
`);
await queryRunner.dropIndex("starboard_reactions", "IDX_dd871a4ef459dd294aa368e736");
await queryRunner.createIndex(
"starboard_reactions",
new TableIndex({
isUnique: true,
columnNames: ["guild_id", "message_id", "reactor_id"],
}),
);
}
public async down(queryRunner: QueryRunner): Promise<any> {
await queryRunner.dropIndex("starboard_reactions", "IDX_d08ee47552c92ec8afd1a5bd1b");
await queryRunner.createIndex("starboard_reactions", new TableIndex({ columnNames: ["reactor_id", "message_id"] }));
}
}