From b4e034e3d8eb4f913e2a171eab0c25afad16eac2 Mon Sep 17 00:00:00 2001
From: Dragory <2606411+Dragory@users.noreply.github.com>
Date: Sun, 14 Jun 2020 23:59:51 +0300
Subject: [PATCH] Mutes: Add locks to prevent multiple simultaneous attempts to
 mute a user

---
 backend/src/plugins/Mutes.ts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/backend/src/plugins/Mutes.ts b/backend/src/plugins/Mutes.ts
index a5df9e09..aafb510e 100644
--- a/backend/src/plugins/Mutes.ts
+++ b/backend/src/plugins/Mutes.ts
@@ -150,8 +150,11 @@ export class MutesPlugin extends ZeppelinPlugin<TConfigSchema> {
     reason: string = null,
     muteOptions: MuteOptions = {},
   ): Promise<MuteResult> {
+    const lock = await this.locks.acquire(`mute-${userId}`);
+
     const muteRole = this.getConfig().mute_role;
     if (!muteRole) {
+      lock.unlock();
       this.throwRecoverablePluginError(ERRORS.NO_MUTE_ROLE_IN_CONFIG);
     }
 
@@ -287,6 +290,8 @@ export class MutesPlugin extends ZeppelinPlugin<TConfigSchema> {
       });
     }
 
+    lock.unlock();
+
     return {
       case: theCase,
       notifyResult,