From c73ac28e09e8f4b4bdddf9d6185dede31daadb82 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ivan=20Sch=C3=BCtz?= <ivanschuetz@gmail.com>
Date: Tue, 30 Jun 2020 10:13:13 +0200
Subject: [PATCH] Fix RxSwift synchronization warning on bootstrap (#295)

---
 CoEpi/common/log/CachingLog.swift | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/CoEpi/common/log/CachingLog.swift b/CoEpi/common/log/CachingLog.swift
index 88bc66e..85ae341 100644
--- a/CoEpi/common/log/CachingLog.swift
+++ b/CoEpi/common/log/CachingLog.swift
@@ -28,6 +28,8 @@ class CachingLog: LogNonVariadicTags {
     private let addLogTrigger: PublishSubject<LogMessage> = PublishSubject()
     private let disposeBag = DisposeBag()
 
+    private let loggerSerialQueue = DispatchQueue(label: "org.coepi.logger")
+
     init() {
         addLogTrigger.withLatestFrom(logs, resultSelector: {(message, logs) in
             (message, logs)
@@ -62,7 +64,9 @@ class CachingLog: LogNonVariadicTags {
     }
 
     private func log(_ message: LogMessage) {
-        addLogTrigger.onNext(message)
+        loggerSerialQueue.async { [weak self] in
+            self?.addLogTrigger.onNext(message)
+        }
     }
 
     private func addTag(tags: [LogTag], message: String) -> String {