Uptime calculation improvement and 1-year uptime (#2750)

server/utils/limit-queue.js

@@ -0,0 +1,37 @@
+const { ArrayWithKey } = require("./array-with-key");
+
+/**
+ * Limit Queue
+ * The first element will be removed when the length exceeds the limit
+ */
+class LimitQueue extends ArrayWithKey {
+
+    __limit;
+    __onExceed = null;
+
+    /**
+     * @param {number} limit
+     */
+    constructor(limit) {
+        super();
+        this.__limit = limit;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    push(key, value) {
+        super.push(key, value);
+        if (this.length() > this.__limit) {
+            let item = this.shift();
+            if (this.__onExceed) {
+                this.__onExceed(item);
+            }
+        }
+    }
+
+}
+
+module.exports = {
+    LimitQueue
+};