first lol

server/src/services/logStreamService.js

@@ -0,0 +1,40 @@
+const { v4: uuidv4 } = require('uuid');
+const io = require('../globals/io');
+const loggerRoot = require('../globals/logger');
+const logger = loggerRoot.child('logStream');
+
+const MAX_HISTORY = 200;
+const history = [];
+
+function pushEntry(entry) {
+  history.push(entry);
+  if (history.length > MAX_HISTORY) {
+    history.shift();
+  }
+}
+
+function broadcast(entry) {
+  io.emit('log:entry', entry);
+}
+
+function hydrateSocket(socket) {
+  if (!socket) return;
+  socket.emit('log:init', history);
+}
+
+loggerRoot.registerSink(({ level, label, message, timestamp }) => {
+  const entry = {
+    id: uuidv4(),
+    level,
+    label,
+    message,
+    timestamp,
+  };
+  pushEntry(entry);
+  broadcast(entry);
+});
+
+io.on('connection', (socket) => {
+  logger.info('Hydrating log history for', socket.id);
+  hydrateSocket(socket);
+});