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import config from "$config";
import { fail, sleep } from "$lib/utils";
import { createClient, defineScript } from "redis";
import { warn, err } from "$lib/logging";
const DEBIT = `
local balanceKey = KEYS[1]
local creditKey = KEYS[2]
local insufficientString = KEYS[3];
local amount = tonumber(ARGV[1])
local tip = tonumber(ARGV[2])
local fee = tonumber(ARGV[3])
local ourfee = tonumber(ARGV[4])
local frozen = tonumber(ARGV[5])
local balance = tonumber(redis.call('get', balanceKey) or '0')
local credit = tonumber(redis.call('get', creditKey) or '0')
local covered = math.min(credit, ourfee)
ourfee = ourfee - covered
if balance - frozen < amount + tip + fee + ourfee then
return {err = insufficientString .. ' ⚡️' .. balance - frozen .. ' / ' .. amount + tip + fee + ourfee}
end
redis.call('decrby', creditKey, tostring(math.floor(covered)))
redis.call('decrby', balanceKey, tostring(math.floor(amount + tip + fee + ourfee)))
return ourfee
`;
const REVERSE = `
local paymentKey = KEYS[1]
local balanceKey = KEYS[2]
local creditKey = KEYS[3]
local hashKey = KEYS[4]
local paymentsKey = KEYS[5]
local pid = KEYS[6]
local total = tonumber(ARGV[1])
local credit = tonumber(ARGV[2])
local hash = ARGV[3]
if redis.call('exists', paymentKey) == 1 then
redis.call('del', paymentKey)
redis.call('srem', 'pending', hash)
redis.call('incrby', balanceKey, total)
redis.call('incrby', creditKey, credit)
redis.call('del', hashKey)
redis.call('lrem', paymentsKey, 0, pid)
return pid
else
error("Payment has already been reversed" .. paymentKey)
end
`;
const debit = defineScript({
NUMBER_OF_KEYS: 3,
SCRIPT: DEBIT,
transformArguments: (...args) => args.map((a) => a.toString()),
});
const reverse = defineScript({
NUMBER_OF_KEYS: 6,
SCRIPT: REVERSE,
transformArguments: (...args) => args.map((a) => a.toString()),
});
export const db = createClient({
url: config.db,
scripts: { debit, reverse },
socket: {
reconnectStrategy: (retries) => Math.min(retries * 50, 5000),
},
});
export const archive = createClient({
url: config.archive,
socket: {
reconnectStrategy: (retries) => Math.min(retries * 50, 5000),
},
});
export const arc2 = createClient({
url: config.arc2,
socket: {
reconnectStrategy: (retries) => Math.min(retries * 50, 5000),
},
});
async function dbReconnect() {
try {
await db.connect();
} catch (err) {
console.error("Failed to connect to Redis, retrying...", err);
setTimeout(dbReconnect, 5000); // Retry after 5 seconds
}
}
async function archiveReconnect() {
try {
await archive.connect();
} catch (err) {
console.error("Failed to connect to Redis, retrying...", err);
setTimeout(archiveReconnect, 5000); // Retry after 5 seconds
}
}
dbReconnect();
archiveReconnect();
db.on("error", (e) => {
if (e.message.startsWith("getaddr")) return;
err("Redis error", e.message);
});
db.on("end", () => {
warn("Redis connection ended");
});
export default db;
export const g = async (k) => {
const v = await db.get(k);
try {
return JSON.parse(v);
} catch (e) {
return v;
}
};
export const s = (k, v) => {
if (k === "user:null" || k === "user:undefined") fail("null user");
db.set(k, JSON.stringify(v));
};
export const ga = async (k) => {
const v = await archive.get(k);
try {
return JSON.parse(v);
} catch (e) {
return v;
}
};
export const sa = (k, v) => {
if (k === "user:null" || k === "user:undefined") {
warn("###### NULL USER #######");
console.trace();
}
archive.set(k, JSON.stringify(v));
};
const retries = {};
export const t = async (k, f) => {
try {
await db.watch(k);
await f(await db.get(k), db);
} catch (err) {
if (!err.message.includes("watch")) throw err;
const r = retries[k] || 0;
retries[k] = r + 1;
if (r < 10) {
await sleep(100);
await t(k, f);
} else {
delete retries[k];
fail("unable to obtain lock");
}
}
delete retries[k];
};
|
