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import { Database } from "$lib/server/database";
import { acquireLock, refreshLock } from "$lib/migrations/lock";
import type { ObjectId } from "mongodb";
import { subDays } from "date-fns";
import { logger } from "$lib/server/logger";
const LOCK_KEY = "assistants.count";
let hasLock = false;
let lockId: ObjectId | null = null;
async function refreshAssistantsCountsHelper() {
if (!hasLock) {
return;
}
try {
await Database.getInstance()
.getClient()
.withSession((session) =>
session.withTransaction(async () => {
await Database.getInstance()
.getCollections()
.assistants.aggregate([
{ $project: { _id: 1 } },
{ $set: { last24HoursCount: 0 } },
{
$unionWith: {
coll: "assistants.stats",
pipeline: [
{
$match: { "date.at": { $gte: subDays(new Date(), 1) }, "date.span": "hour" },
},
{
$group: {
_id: "$assistantId",
last24HoursCount: { $sum: "$count" },
},
},
],
},
},
{
$group: {
_id: "$_id",
last24HoursCount: { $sum: "$last24HoursCount" },
},
},
{
$merge: {
into: "assistants",
on: "_id",
whenMatched: "merge",
whenNotMatched: "discard",
},
},
])
.next();
})
);
} catch (e) {
logger.error("Refresh assistants counter failed!");
logger.error(e);
}
}
async function maintainLock() {
if (hasLock && lockId) {
hasLock = await refreshLock(LOCK_KEY, lockId);
if (!hasLock) {
lockId = null;
}
} else if (!hasLock) {
lockId = (await acquireLock(LOCK_KEY)) || null;
hasLock = !!lockId;
}
setTimeout(maintainLock, 10_000);
}
export function refreshAssistantsCounts() {
const ONE_HOUR_MS = 3_600_000;
maintainLock().then(() => {
refreshAssistantsCountsHelper();
setInterval(refreshAssistantsCountsHelper, ONE_HOUR_MS);
});
}
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