Files
bun-mariadb/dist/lib/db-handler.js
T

93 lines
2.8 KiB
JavaScript

import grabMariaDBClient from "../functions/grab-mariadb-client";
/**
* Resolve a shared MariaDB client. Prefer the global client so schema sync
* and CRUD do not open a new connection per query.
*/
export function resolveClient(config) {
if (!config) {
return global.MARIADB_CLIENT;
}
// Returns the global client when it was created from the same config
return grabMariaDBClient({ config });
}
/**
* Keep the event loop alive until `fn` settles.
* An idle Bun.SQL connection does not hold the process open, so a query sent
* on it after something else released the loop (e.g. an inquirer prompt
* releasing stdin) lets Bun exit silently mid-query.
*/
export async function holdEventLoop(fn) {
const timer = setInterval(() => { }, 1 << 30);
try {
return await fn();
}
finally {
clearInterval(timer);
}
}
/**
* Convert driver rows to plain objects.
* - BigInt -> number (or string when outside the safe integer range)
* - Date -> ISO string (matches the generated `string` typedefs)
* - Buffers / typed arrays (BLOB, VECTOR) are kept as-is
*/
function normalizeValue(value) {
if (typeof value == "bigint") {
const num = Number(value);
return Number.isSafeInteger(num) ? num : value.toString();
}
if (value instanceof Date) {
return Number.isNaN(value.getTime()) ? null : value.toISOString();
}
return value;
}
function normalizeRows(res) {
if (!Array.isArray(res))
return undefined;
return res.map((row) => {
if (!row || typeof row != "object")
return row;
const normalized = {};
for (const [key, value] of Object.entries(row)) {
normalized[key] = normalizeValue(value);
}
return normalized;
});
}
/**
* # Main DB Handler Function
*/
export default async function dbHandler({ query, values, config, client }) {
try {
const CLIENT = client || resolveClient(config);
if (!CLIENT) {
throw new Error(`Couldn't grab MariaDB Client.`);
}
const res = await holdEventLoop(() => CLIENT.unsafe(query, values));
const count = res.count;
const res_array = normalizeRows(res);
const last_insert_id = res_array?.[0] ? res_array[0]?.id : undefined;
const affected_rows = res_array?.[0] ? res_array.length : undefined;
const insert_return = {
count,
last_insert_id,
affected_rows,
};
return {
success: true,
payload: res_array,
single_res: res_array?.[0],
insert_return,
count,
db_res: res,
};
}
catch (error) {
return {
success: false,
error: "DB Handler Error => " + error.message,
msg: "DB Handler Error => " + error.message,
};
}
}