fix(sonarr): race condition during version retrieval

src/Common/Common.csproj

@@ -1,8 +1,10 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <ItemGroup>
-    <PackageReference Include="FluentValidation" />
-    <PackageReference Include="YamlDotNet" />
     <PackageReference Include="Autofac" />
+    <PackageReference Include="FluentValidation" />
     <PackageReference Include="Newtonsoft.Json" />
+    <PackageReference Include="Serilog" />
+    <PackageReference Include="System.Reactive" />
+    <PackageReference Include="YamlDotNet" />
   </ItemGroup>
 </Project>

src/Common/Extensions/RxExtensions.cs

@@ -0,0 +1,49 @@
+using System;
+using System.Reactive.Disposables;
+using System.Reactive.Linq;
+using System.Threading;
+using Serilog;
+
+namespace Common.Extensions
+{
+    public static class RxExtensions
+    {
+        public static IObservable<T> Spy<T>(this IObservable<T> source, ILogger log, string? opName = null)
+        {
+            opName ??= "IObservable";
+            log.Debug("{OpName}: Observable obtained on Thread: {ThreadId}",
+                opName,
+                Thread.CurrentThread.ManagedThreadId);
+
+            return Observable.Create<T>(obs =>
+            {
+                log.Debug("{OpName}: Subscribed to on Thread: {ThreadId}",
+                    opName,
+                    Thread.CurrentThread.ManagedThreadId);
+
+                try
+                {
+                    var subscription = source
+                        .Do(
+                            x => log.Debug("{OpName}: OnNext({Result}) on Thread: {ThreadId}", opName, x,
+                                Thread.CurrentThread.ManagedThreadId),
+                            ex => log.Debug("{OpName}: OnError({Result}) on Thread: {ThreadId}", opName, ex.Message,
+                                Thread.CurrentThread.ManagedThreadId),
+                            () => log.Debug("{OpName}: OnCompleted() on Thread: {ThreadId}", opName,
+                                Thread.CurrentThread.ManagedThreadId))
+                        .Subscribe(obs);
+                    return new CompositeDisposable(
+                        subscription,
+                        Disposable.Create(() => log.Debug(
+                            "{OpName}: Cleaned up on Thread: {ThreadId}",
+                            opName,
+                            Thread.CurrentThread.ManagedThreadId)));
+                }
+                finally
+                {
+                    log.Debug("{OpName}: Subscription completed", opName);
+                }
+            });
+        }
+    }
+}

src/Trash/Command/RadarrCommand.cs

@@ -20,17 +20,19 @@ namespace Trash.Command
     {
         private readonly IConfigurationLoader<RadarrConfiguration> _configLoader;
         private readonly Func<ICustomFormatUpdater> _customFormatUpdaterFactory;
+        private readonly ILogger _log;
         private readonly Func<IRadarrQualityDefinitionUpdater> _qualityUpdaterFactory;
 
         public RadarrCommand(
-            ILogger logger,
+            ILogger log,
             LoggingLevelSwitch loggingLevelSwitch,
             ILogJanitor logJanitor,
             IConfigurationLoader<RadarrConfiguration> configLoader,
             Func<IRadarrQualityDefinitionUpdater> qualityUpdaterFactory,
             Func<ICustomFormatUpdater> customFormatUpdaterFactory)
-            : base(logger, loggingLevelSwitch, logJanitor)
+            : base(log, loggingLevelSwitch, logJanitor)
         {
+            _log = log;
             _configLoader = configLoader;
             _qualityUpdaterFactory = qualityUpdaterFactory;
             _customFormatUpdaterFactory = customFormatUpdaterFactory;
@@ -58,7 +60,7 @@ namespace Trash.Command
             }
             catch (FlurlHttpException e)
             {
-                Log.Error(e, "HTTP error while communicating with Radarr");
+                _log.Error(e, "HTTP error while communicating with Radarr");
                 ExitDueToFailure();
             }
         }

src/Trash/Command/SonarrCommand.cs

@@ -19,18 +19,20 @@ namespace Trash.Command
     public class SonarrCommand : ServiceCommand
     {
         private readonly IConfigurationLoader<SonarrConfiguration> _configLoader;
+        private readonly ILogger _log;
         private readonly Func<IReleaseProfileUpdater> _profileUpdaterFactory;
         private readonly Func<ISonarrQualityDefinitionUpdater> _qualityUpdaterFactory;
 
         public SonarrCommand(
-            ILogger logger,
+            ILogger log,
             LoggingLevelSwitch loggingLevelSwitch,
             ILogJanitor logJanitor,
             IConfigurationLoader<SonarrConfiguration> configLoader,
             Func<IReleaseProfileUpdater> profileUpdaterFactory,
             Func<ISonarrQualityDefinitionUpdater> qualityUpdaterFactory)
-            : base(logger, loggingLevelSwitch, logJanitor)
+            : base(log, loggingLevelSwitch, logJanitor)
         {
+            _log = log;
             _configLoader = configLoader;
             _profileUpdaterFactory = profileUpdaterFactory;
             _qualityUpdaterFactory = qualityUpdaterFactory;
@@ -60,7 +62,7 @@ namespace Trash.Command
             }
             catch (FlurlHttpException e)
             {
-                Log.Error(e, "HTTP error while communicating with Sonarr");
+                _log.Error(e, "HTTP error while communicating with Sonarr");
                 ExitDueToFailure();
             }
         }

src/TrashLib.Tests/Sonarr/Api/SonarrReleaseProfileCompatibilityHandlerTest.cs

@@ -1,5 +1,7 @@
 using System;
 using System.Collections.Generic;
+using System.Reactive.Linq;
+using System.Threading.Tasks;
 using AutoMapper;
 using FluentAssertions;
 using Newtonsoft.Json;
@@ -55,7 +57,6 @@ namespace TrashLib.Tests.Sonarr.Api
 
             var result = sut.CompatibleReleaseProfileForReceiving(JObject.Parse(ctx.SerializeJson(dataV1)));
 
-            _ = compat.DidNotReceive().ArraysNeededForReleaseProfileRequiredAndIgnored;
             result.Should().BeEquivalentTo(new SonarrReleaseProfile
             {
                 Ignored = new List<string> {"one", "two", "three"}
@@ -73,38 +74,43 @@ namespace TrashLib.Tests.Sonarr.Api
 
             var result = sut.CompatibleReleaseProfileForReceiving(JObject.Parse(ctx.SerializeJson(dataV2)));
 
-            _ = compat.DidNotReceive().ArraysNeededForReleaseProfileRequiredAndIgnored;
             result.Should().BeEquivalentTo(dataV2);
         }
 
         [Test]
-        public void Send_v2_to_v1()
+        public async Task Send_v2_to_v1()
         {
             using var ctx = new TestContext();
 
             var compat = Substitute.For<ISonarrCompatibility>();
-            compat.ArraysNeededForReleaseProfileRequiredAndIgnored.Returns(false);
+            compat.Capabilities.Returns(new[]
+            {
+                new SonarrCapabilities {ArraysNeededForReleaseProfileRequiredAndIgnored = false}
+            }.ToObservable());
 
             var data = new SonarrReleaseProfile {Ignored = new List<string> {"one", "two", "three"}};
             var sut = new SonarrReleaseProfileCompatibilityHandler(compat, ctx.Mapper);
 
-            var result = sut.CompatibleReleaseProfileForSending(data);
+            var result = await sut.CompatibleReleaseProfileForSendingAsync(data);
 
             result.Should().BeEquivalentTo(new SonarrReleaseProfileV1 {Ignored = "one,two,three"});
         }
 
         [Test]
-        public void Send_v2_to_v2()
+        public async Task Send_v2_to_v2()
         {
             using var ctx = new TestContext();
 
             var compat = Substitute.For<ISonarrCompatibility>();
-            compat.ArraysNeededForReleaseProfileRequiredAndIgnored.Returns(true);
+            compat.Capabilities.Returns(new[]
+            {
+                new SonarrCapabilities {ArraysNeededForReleaseProfileRequiredAndIgnored = true}
+            }.ToObservable());
 
             var data = new SonarrReleaseProfile {Ignored = new List<string> {"one", "two", "three"}};
             var sut = new SonarrReleaseProfileCompatibilityHandler(compat, ctx.Mapper);
 
-            var result = sut.CompatibleReleaseProfileForSending(data);
+            var result = await sut.CompatibleReleaseProfileForSendingAsync(data);
 
             result.Should().BeEquivalentTo(data);
         }

src/TrashLib/Sonarr/Api/ISonarrReleaseProfileCompatibilityHandler.cs

@@ -1,3 +1,4 @@
+using System.Threading.Tasks;
 using Newtonsoft.Json.Linq;
 using TrashLib.Sonarr.Api.Objects;
 
@@ -5,7 +6,7 @@ namespace TrashLib.Sonarr.Api
 {
     public interface ISonarrReleaseProfileCompatibilityHandler
     {
-        object CompatibleReleaseProfileForSending(SonarrReleaseProfile profile);
+        Task<object> CompatibleReleaseProfileForSendingAsync(SonarrReleaseProfile profile);
         SonarrReleaseProfile CompatibleReleaseProfileForReceiving(JObject profile);
     }
 }

src/TrashLib/Sonarr/Api/SonarrApi.cs

@@ -54,16 +54,18 @@ namespace TrashLib.Sonarr.Api
 
         public async Task UpdateReleaseProfile(SonarrReleaseProfile profileToUpdate)
         {
+            var profileToSend = await _profileHandler.CompatibleReleaseProfileForSendingAsync(profileToUpdate);
             await BaseUrl()
                 .AppendPathSegment($"releaseprofile/{profileToUpdate.Id}")
-                .PutJsonAsync(_profileHandler.CompatibleReleaseProfileForSending(profileToUpdate));
+                .PutJsonAsync(profileToSend);
         }
 
         public async Task<SonarrReleaseProfile> CreateReleaseProfile(SonarrReleaseProfile newProfile)
         {
+            var profileToSend = await _profileHandler.CompatibleReleaseProfileForSendingAsync(newProfile);
             var response = await BaseUrl()
                 .AppendPathSegment("releaseprofile")
-                .PostJsonAsync(_profileHandler.CompatibleReleaseProfileForSending(newProfile))
+                .PostJsonAsync(profileToSend)
                 .ReceiveJson<JObject>();
 
             return _profileHandler.CompatibleReleaseProfileForReceiving(response);

src/TrashLib/Sonarr/Api/SonarrReleaseProfileCompatibilityHandler.cs

@@ -1,5 +1,7 @@
 using System.Collections.Generic;
 using System.IO;
+using System.Reactive.Linq;
+using System.Threading.Tasks;
 using AutoMapper;
 using Newtonsoft.Json.Linq;
 using Newtonsoft.Json.Schema;
@@ -22,9 +24,10 @@ namespace TrashLib.Sonarr.Api
             _mapper = mapper;
         }
 
-        public object CompatibleReleaseProfileForSending(SonarrReleaseProfile profile)
+        public async Task<object> CompatibleReleaseProfileForSendingAsync(SonarrReleaseProfile profile)
         {
-            return _compatibility.ArraysNeededForReleaseProfileRequiredAndIgnored
+            var capabilities = await _compatibility.Capabilities.LastAsync();
+            return capabilities.ArraysNeededForReleaseProfileRequiredAndIgnored
                 ? profile
                 : _mapper.Map<SonarrReleaseProfileV1>(profile);
         }

src/TrashLib/Sonarr/ISonarrCompatibility.cs

@@ -1,10 +1,10 @@
+using System;
+
 namespace TrashLib.Sonarr
 {
     public interface ISonarrCompatibility
     {
-        bool SupportsNamedReleaseProfiles { get; }
+        IObservable<SonarrCapabilities> Capabilities { get; }
-        bool ArraysNeededForReleaseProfileRequiredAndIgnored { get; }
+        Version MinimumVersion { get; }
-        string InformationalVersion { get; }
-        string MinimumVersion { get; }
     }
 }

src/TrashLib/Sonarr/ReleaseProfile/ReleaseProfileUpdater.cs

@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using System.Linq;
+using System.Reactive.Linq;
 using System.Threading.Tasks;
 using Common.Extensions;
 using Serilog;
@@ -53,12 +54,19 @@ namespace TrashLib.Sonarr.ReleaseProfile
             }
         }
 
-        private void DoVersionEnforcement()
+        private async Task DoVersionEnforcement()
         {
-            if (!_compatibility.SupportsNamedReleaseProfiles)
+            // _compatibility.Capabilities
+            //     .Where(x => !x.SupportsNamedReleaseProfiles)
+            //     .Subscribe(x => throw new VersionException(
+            //         $"Your Sonarr version {x.Version} does not meet the minimum " +
+            //         $"required version of {_compatibility.MinimumVersion} to use this program"));
+
+            var capabilities = await _compatibility.Capabilities.LastAsync();
+            if (!capabilities.SupportsNamedReleaseProfiles)
             {
                 throw new VersionException(
-                    $"Your Sonarr version {_compatibility.InformationalVersion} does not meet the minimum " +
+                    $"Your Sonarr version {capabilities.Version} does not meet the minimum " +
                     $"required version of {_compatibility.MinimumVersion} to use this program");
             }
         }
@@ -128,7 +136,7 @@ namespace TrashLib.Sonarr.ReleaseProfile
         private async Task ProcessReleaseProfiles(IDictionary<string, ProfileData> profiles,
             ReleaseProfileConfig config)
         {
-            DoVersionEnforcement();
+            await DoVersionEnforcement();
 
             List<int> tagIds = new();
 

src/TrashLib/Sonarr/SonarrCapabilities.cs

@@ -0,0 +1,27 @@
+using System;
+
+namespace TrashLib.Sonarr
+{
+    public record SonarrCapabilities
+    {
+        public SonarrCapabilities()
+        {
+            Version = new Version();
+        }
+
+        public SonarrCapabilities(Version version)
+        {
+            Version = version;
+        }
+
+        public Version Version { get; }
+
+        public bool SupportsNamedReleaseProfiles { get; init; }
+
+        // Background: Issue #16 filed which points to a backward-breaking API
+        // change made in Sonarr at commit [deed85d2f].
+        //
+        // [deed85d2f]: https://github.com/Sonarr/Sonarr/commit/deed85d2f9147e6180014507ef4f5af3695b0c61
+        public bool ArraysNeededForReleaseProfileRequiredAndIgnored { get; init; }
+    }
+}

src/TrashLib/Sonarr/SonarrCompatibility.cs

@@ -1,6 +1,6 @@
 using System;
+using System.Reactive.Concurrency;
 using System.Reactive.Linq;
-using System.Reactive.Threading.Tasks;
 using Flurl.Http;
 using TrashLib.Config;
 
@@ -8,30 +8,32 @@ namespace TrashLib.Sonarr
 {
     public class SonarrCompatibility : ISonarrCompatibility
     {
-        private Version _version = new();
-
         public SonarrCompatibility(IServerInfo serverInfo)
         {
-            var task = serverInfo.BuildRequest()
+            Capabilities = Observable.FromAsync(
-                .AppendPathSegment("system/status")
+                    async () => await serverInfo.BuildRequest()
-                .GetJsonAsync();
+                        .AppendPathSegment("system/status")
-
+                        .GetJsonAsync(), NewThreadScheduler.Default)
-            task.ToObservable()
+                .Timeout(TimeSpan.FromSeconds(15))
                 .Select(x => new Version(x.version))
-                .Subscribe(x => _version = x);
+                .Select(BuildCapabilitiesObject)
+                .Replay(1)
+                .AutoConnect();
         }
 
-        public bool SupportsNamedReleaseProfiles =>
+        public IObservable<SonarrCapabilities> Capabilities { get; }
-            _version >= new Version(MinimumVersion);
+        public Version MinimumVersion => new("3.0.4.1098");
 
-        // Background: Issue #16 filed which points to a backward-breaking API
+        private SonarrCapabilities BuildCapabilitiesObject(Version version)
-        // change made in Sonarr at commit [deed85d2f].
+        {
-        //
+            return new SonarrCapabilities(version)
-        // [deed85d2f]: https://github.com/Sonarr/Sonarr/commit/deed85d2f9147e6180014507ef4f5af3695b0c61
+            {
-        public bool ArraysNeededForReleaseProfileRequiredAndIgnored =>
+                SupportsNamedReleaseProfiles =
-            _version >= new Version("3.0.6.1355");
+                    version >= MinimumVersion,
 
-        public string InformationalVersion => _version.ToString();
+                ArraysNeededForReleaseProfileRequiredAndIgnored =
-        public string MinimumVersion => "3.0.4.1098";
+                    version >= new Version("3.0.6.1355")
+            };
+        }
     }
 }