From 44b776ef32413febcf0e140cb5d839a798e35e3d Mon Sep 17 00:00:00 2001
From: Christoph Hagen <github@christophhagen.de>
Date: Thu, 7 Sep 2023 16:00:02 +0200
Subject: [PATCH] Wait to write metrics

---
 Sources/App/configure.swift | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Sources/App/configure.swift b/Sources/App/configure.swift
index 374012c..1ee1cab 100755
--- a/Sources/App/configure.swift
+++ b/Sources/App/configure.swift
@@ -118,10 +118,13 @@ private func migrateMetric<T>(_ id: String, containing type: T.Type, in folder:
     // TODO: Write values back to disk
     let observer = MetricObserver(logFileFolder: folder, logMetricId: "sesame.migration")
     let metric: Metric<T> = observer.addMetric(id: id)
+    private let semaphore = DispatchSemaphore(value: 0)
     Task {
         try await metric.update(all)
         print("Saved all values for metric \(id)")
+        semaphore.signal()
     }
+    semaphore.wait()
     print("Finished metric \(id)")
 }