From a57b22a6bc20df951c70212943b018ba8039a914 Mon Sep 17 00:00:00 2001
From: Leonid Logvinov <logvinov.leon@gmail.com>
Date: Wed, 6 Sep 2017 17:41:40 +0200
Subject: Fix overlapping async intervals issue

---
 src/utils/interval_utils.ts | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 src/utils/interval_utils.ts

(limited to 'src/utils')

diff --git a/src/utils/interval_utils.ts b/src/utils/interval_utils.ts
new file mode 100644
index 000000000..23e6acc5b
--- /dev/null
+++ b/src/utils/interval_utils.ts
@@ -0,0 +1,20 @@
+import * as _ from 'lodash';
+
+export class IntervalUtils {
+    private mutex: {[intervalId: number]: boolean} = {};
+    public setAsyncExcludingInterval(fn: () => Promise<void>, intervalMs: number) {
+        const intervalId = setInterval(async () => {
+            if (_.isUndefined(this.mutex[intervalId])) {
+                return;
+            } else {
+                this.mutex[intervalId] = true;
+                await fn();
+                delete this.mutex[intervalId];
+            }
+        });
+        return intervalId;
+    }
+    public clearAsyncExcludingInterval(intervalId: number): void {
+        clearInterval(intervalId);
+    }
+}
-- 
cgit v1.2.3