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File size: 1,917 Bytes
6491ad4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | import { sql } from "../sql/index.js";
function readMigrationFiles({ journal, migrations }) {
const migrationQueries = [];
for (const journalEntry of journal.entries) {
const query = migrations[`m${journalEntry.idx.toString().padStart(4, "0")}`];
if (!query) {
throw new Error(`Missing migration: ${journalEntry.tag}`);
}
try {
const result = query.split("--> statement-breakpoint").map((it) => {
return it;
});
migrationQueries.push({
sql: result,
bps: journalEntry.breakpoints,
folderMillis: journalEntry.when,
hash: ""
});
} catch {
throw new Error(`Failed to parse migration: ${journalEntry.tag}`);
}
}
return migrationQueries;
}
async function migrate(db, config) {
const migrations = readMigrationFiles(config);
db.transaction((tx) => {
try {
const migrationsTable = "__drizzle_migrations";
const migrationTableCreate = sql`
CREATE TABLE IF NOT EXISTS ${sql.identifier(migrationsTable)} (
id SERIAL PRIMARY KEY,
hash text NOT NULL,
created_at numeric
)
`;
db.run(migrationTableCreate);
const dbMigrations = db.values(
sql`SELECT id, hash, created_at FROM ${sql.identifier(migrationsTable)} ORDER BY created_at DESC LIMIT 1`
);
const lastDbMigration = dbMigrations[0] ?? void 0;
for (const migration of migrations) {
if (!lastDbMigration || Number(lastDbMigration[2]) < migration.folderMillis) {
for (const stmt of migration.sql) {
db.run(sql.raw(stmt));
}
db.run(
sql`INSERT INTO ${sql.identifier(migrationsTable)} ("hash", "created_at") VALUES(${migration.hash}, ${migration.folderMillis})`
);
}
}
} catch (error) {
tx.rollback();
throw error;
}
});
}
export {
migrate
};
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