90 lines
3.1 KiB
TypeScript
90 lines
3.1 KiB
TypeScript
import { MigrationInterface, QueryRunner, TableColumn, TableIndex } from "typeorm";
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import { TableForeignKey } from "typeorm/index";
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export class UpdateCounterTriggers1617363975046 implements MigrationInterface {
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public async up(queryRunner: QueryRunner): Promise<void> {
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// Since we're adding a non-nullable unique name column and existing triggers won't have that, clear the table first
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await queryRunner.query("DELETE FROM counter_triggers");
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await queryRunner.addColumns("counter_triggers", [
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new TableColumn({
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name: "name",
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type: "varchar",
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length: "255",
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}),
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new TableColumn({
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name: "reverse_comparison_op",
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type: "varchar",
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length: "16",
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}),
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new TableColumn({
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name: "reverse_comparison_value",
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type: "int",
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}),
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]);
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// Drop foreign key for counter_id -- needed to be able to drop the following unique index
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await queryRunner.dropForeignKey("counter_triggers", "FK_6bb47849ec95c87e58c5d3e6ae1");
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// Index for ["counter_id", "comparison_op", "comparison_value"]
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await queryRunner.dropIndex("counter_triggers", "IDX_ddc8a6701f1234b926d35aebf3");
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await queryRunner.createIndex(
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"counter_triggers",
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new TableIndex({
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columnNames: ["counter_id", "name"],
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isUnique: true,
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}),
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);
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// Recreate foreign key for counter_id
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await queryRunner.createForeignKey(
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"counter_triggers",
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new TableForeignKey({
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columnNames: ["counter_id"],
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referencedTableName: "counters",
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referencedColumnNames: ["id"],
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onDelete: "CASCADE",
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onUpdate: "CASCADE",
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}),
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);
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}
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public async down(queryRunner: QueryRunner): Promise<void> {
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// Since we're going back to unique comparison op and comparison value in this reverse-migration,
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// clear table contents first so we don't run into any conflicts with triggers with different names but identical comparison op and comparison value
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await queryRunner.query("DELETE FROM counter_triggers");
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// Drop foreign key for counter_id -- needed to be able to drop the following unique index
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await queryRunner.dropForeignKey("counter_triggers", "FK_6bb47849ec95c87e58c5d3e6ae1");
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// Index for ["counter_id", "name"]
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await queryRunner.dropIndex("counter_triggers", "IDX_2ec128e1d74bedd0288b60cdd1");
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await queryRunner.createIndex(
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"counter_triggers",
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new TableIndex({
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columnNames: ["counter_id", "comparison_op", "comparison_value"],
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isUnique: true,
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}),
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);
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// Recreate foreign key for counter_id
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await queryRunner.createForeignKey(
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"counter_triggers",
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new TableForeignKey({
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columnNames: ["counter_id"],
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referencedTableName: "counters",
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referencedColumnNames: ["id"],
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onDelete: "CASCADE",
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onUpdate: "CASCADE",
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}),
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);
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await queryRunner.dropColumn("counter_triggers", "reverse_comparison_value");
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await queryRunner.dropColumn("counter_triggers", "reverse_comparison_op");
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await queryRunner.dropColumn("counter_triggers", "name");
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}
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}
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