@shopify/shopify-app-session-storage-redis/dist/esm/redis-migrator.mjs

Shopify App Session Storage for Redis

import { AbstractMigrationEngine } from '@shopify/shopify-app-session-storage';

class RedisSessionStorageMigrator extends AbstractMigrationEngine {
    constructor(dbConnection, opts = {}, migrations) {
        // The name has already been decided whith the last migration
        opts.migrationDBIdentifier = 'migrations';
        super(dbConnection, opts, migrations);
    }
    async initMigrationPersistence() {
        // nothing to do here
        return Promise.resolve();
    }
    async hasMigrationBeenApplied(migrationName) {
        const migrations = await this.getMigrationRecords();
        const found = migrations.get(migrationName) ?? false;
        return Promise.resolve(found);
    }
    async saveAppliedMigration(migrationName) {
        const migrations = await this.getMigrationRecords();
        migrations.set(migrationName, true);
        this.connection.set(this.options.migrationDBIdentifier, JSON.stringify(Object.fromEntries(migrations)));
        return Promise.resolve();
    }
    async getMigrationRecords() {
        const migrationsRecord = await this.connection.get(this.options.migrationDBIdentifier);
        let migrations = new Map();
        if (migrationsRecord) {
            migrations = new Map(Object.entries(JSON.parse(migrationsRecord)));
        }
        return Promise.resolve(migrations);
    }
}

export { RedisSessionStorageMigrator };
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