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If-Abfrage für ObjectId-Filterung eingebaut

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This commit is contained in:
Timo Reichl 2025-03-30 13:39:12 +02:00
parent 25485dde69
commit 35cfe20062
1 changed files with 45 additions and 29 deletions
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74
index.js
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@ -1,5 +1,5 @@
import { WebSocketServer } from 'ws';
import { MongoClient } from 'mongodb';
import { WebSocketServer } from "ws";
import { MongoClient, ObjectId } from "mongodb";
const mongo = new MongoClient(process.env.MONGO_CONN_STR);
const db = mongo.db();
@ -14,56 +14,72 @@ async function executeSet(message, ws) {
if (!subject) {
subject = collections[message.subject] = db.collection(message.subject);
}
let newValue = {$set: {}};
newValue.$set[message.field + '.modifiedAt'] = Date.now();
newValue.$set[message.field + '.modifiedBy'] = 'anonymous';
newValue.$set[message.field + '.transientValue'] = message.value;
let newValue = { $set: {} };
newValue.$set[message.field + ".modifiedAt"] = Date.now();
newValue.$set[message.field + ".modifiedBy"] = "anonymous";
newValue.$set[message.field + ".transientValue"] = message.value;
await subject.updateMany(message.filter, newValue, { upsert: true })
await subject.updateMany(message.filter, newValue, { upsert: true });
}
wss.on('connection', function connection(ws) {
wss.on("connection", function connection(ws) {
connections.push(ws);
console.log('accepted new connection');
console.log("accepted new connection");
ws.on('error', console.error);
ws.on('close', e => {
console.log('closed a connection');
ws.on("error", console.error);
ws.on("close", (e) => {
console.log("closed a connection");
connections.splice(connections.indexOf(ws), 1);
});
ws.on('message', function message(data, isBinary) {
console.log('received a new message');
ws.on("message", function message(data, isBinary) {
console.log("received a new message");
if (
message.filter &&
message.filter._id &&
typeof message.filter._id === "string"
) {
try {
message.filter._id = new ObjectId(message.filter._id);
} catch (e) {
console.error("Invalid ObjectId in filter:", e);
}
}
try {
let message = JSON.parse(data);
console.log('message action is ' + message.action);
console.log("message action is " + message.action);
switch (message.action) {
case 'set':
case "set":
executeSet(message, ws).catch(console.error);
break;
case 'subscribe':
case "subscribe":
let subject = collections[message.subject];
if (!subject) {
subject = collections[message.subject] = db.collection(message.subject);
subject = collections[message.subject] = db.collection(
message.subject
);
}
subject.find(message.filter, {}).toArray().then(r => {
ws.send(JSON.stringify({
subject: message.subject,
field: message.field,
filter: message.filter,
value: r.map(v => v[message.field])
}));
});
subject
.find(message.filter, {})
.toArray()
.then((r) => {
ws.send(
JSON.stringify({
subject: message.subject,
field: message.field,
filter: message.filter,
value: r.map((v) => v[message.field]),
})
);
});
break;
}
} catch (e) {
console.error('error while processing message', e);
console.error("error while processing message", e);
ws.send(JSON.stringify(e));
}
});
});