added job parallel lock, file structure, diagnostics

Selector.CLI/Jobs/ScrobbleWatcherJob.cs

@@ -12,6 +12,7 @@ using System.Threading.Tasks;
 
 namespace Selector.CLI.Jobs
 {
+    [DisallowConcurrentExecution]
     public class ScrobbleWatcherJob : IJob
     {
         private readonly ILogger<ScrobbleWatcherJob> logger;

Selector.Web/Startup.cs

@@ -125,11 +125,11 @@ namespace Selector.Web
             if (env.IsDevelopment())
             {
                 app.UseDeveloperExceptionPage();
-                app.UseHttpsRedirection();
             }
             else
             {
                 app.UseExceptionHandler("/Error");
+                app.UseHttpsRedirection();
                 // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                 //app.UseHsts();
             }

Selector/Scrobble/Mapping/ScrobbleMapping.cs

@@ -2,6 +2,7 @@
 using Selector.Operations;
 using SpotifyAPI.Web;
 using System;
+using System.Diagnostics;
 using System.Threading.Tasks;
 
 namespace Selector
@@ -40,9 +41,13 @@ namespace Selector
         {
             logger.LogInformation("Mapping Last.fm {} ({}) to Spotify", Query, QueryType);
 
+            var netTime = Stopwatch.StartNew();
             currentTask = searchClient.Item(new (QueryType, Query));
             currentTask.ContinueWith(async t =>
             {
+                netTime.Stop();
+                logger.LogTrace("Network request took {:n} ms", netTime.ElapsedMilliseconds);
+
                 if (t.IsCompletedSuccessfully)
                 {
                     HandleResponse(t);

Selector/Scrobble/ScrobbleRequest.cs

@@ -5,6 +5,7 @@ using Microsoft.Extensions.Logging;
 using Selector.Operations;
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
 using System.Threading.Tasks;
 
@@ -50,9 +51,14 @@ namespace Selector
         public Task Execute()
         {
             logger.LogInformation("Scrobble request #{} for {} by {} from {} to {}", pageNumber, username, pageSize, from, to);
+
+            var netTime = Stopwatch.StartNew();
             currentTask = userClient.GetRecentScrobbles(username, pagenumber: pageNumber, count: pageSize, from: from, to: to);
             currentTask.ContinueWith(async t =>
             {
+                netTime.Stop();
+                logger.LogTrace("Network request took {:n} ms", netTime.ElapsedMilliseconds);
+
                 if (t.IsCompletedSuccessfully)
                 {
                     var result = t.Result;