add Push-based monitoring (#279)

src/util.ts

@@ -113,3 +113,13 @@ export function getRandomInt(min: number, max: number) {
     max = Math.floor(max);
     return Math.floor(Math.random() * (max - min + 1)) + min;
 }
+
+export function genSecret(length = 64) {
+    let secret = "";
+    let chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+    let charsLength = chars.length;
+    for ( let i = 0; i < length; i++ ) {
+        secret += chars.charAt(Math.floor(Math.random() * charsLength));
+    }
+    return secret;
+}