Fixed: Releases no longer available on the indexer should be removed from the pending queue

src/NzbDrone.Core.Test/Download/DownloadApprovedReportsTests/DownloadApprovedFixture.cs

@@ -8,6 +8,7 @@ using NzbDrone.Core.DecisionEngine;
 using NzbDrone.Core.Download;
 using NzbDrone.Core.Download.Clients;
 using NzbDrone.Core.Download.Pending;
+using NzbDrone.Core.Exceptions;
 using NzbDrone.Core.Indexers;
 using NzbDrone.Core.Parser.Model;
 using NzbDrone.Core.Profiles.Qualities;
@@ -262,5 +263,26 @@ namespace NzbDrone.Core.Test.Download.DownloadApprovedReportsTests
             Mocker.GetMock<IDownloadService>().Verify(v => v.DownloadReport(It.Is<RemoteAlbum>(r => r.Release.DownloadProtocol == DownloadProtocol.Usenet)), Times.Once());
             Mocker.GetMock<IDownloadService>().Verify(v => v.DownloadReport(It.Is<RemoteAlbum>(r => r.Release.DownloadProtocol == DownloadProtocol.Torrent)), Times.Once());
         }
+
+        [Test]
+        public void should_add_to_rejected_if_release_unavailable_on_indexer()
+        {
+            var albums = new List<Album> { GetAlbum(1) };
+            var remoteAlbum = GetRemoteAlbum(albums, new QualityModel(Quality.MP3_320));
+
+            var decisions = new List<DownloadDecision>();
+            decisions.Add(new DownloadDecision(remoteAlbum));
+
+            Mocker.GetMock<IDownloadService>()
+                  .Setup(s => s.DownloadReport(It.IsAny<RemoteAlbum>()))
+                  .Throws(new ReleaseUnavailableException(remoteAlbum.Release, "That 404 Error is not just a Quirk"));
+
+            var result = Subject.ProcessDecisions(decisions);
+
+            result.Grabbed.Should().BeEmpty();
+            result.Rejected.Should().NotBeEmpty();
+
+            ExceptionVerification.ExpectedWarns(1);
+        }
     }
 }

src/NzbDrone.Core.Test/Download/DownloadServiceFixture.cs

@@ -179,6 +179,21 @@ namespace NzbDrone.Core.Test.Download
                 .Verify(v => v.RecordFailure(It.IsAny<int>(), It.IsAny<TimeSpan>()), Times.Never());
         }
 
+        [Test]
+        public void Download_report_should_not_trigger_indexer_backoff_on_indexer_404_error()
+        {
+            var mock = WithUsenetClient();
+            mock.Setup(s => s.Download(It.IsAny<RemoteAlbum>()))
+                .Callback<RemoteAlbum>(v => {
+                    throw new ReleaseUnavailableException(v.Release, "Error", new WebException());
+                });
+
+            Assert.Throws<ReleaseUnavailableException>(() => Subject.DownloadReport(_parseResult));
+
+            Mocker.GetMock<IIndexerStatusService>()
+                .Verify(v => v.RecordFailure(It.IsAny<int>(), It.IsAny<TimeSpan>()), Times.Never());
+        }
+
         [Test]
         public void should_not_attempt_download_if_client_isnt_configured()
         {

src/NzbDrone.Core/Download/DownloadService.cs

@@ -74,6 +74,11 @@ namespace NzbDrone.Core.Download
                 _downloadClientStatusService.RecordSuccess(downloadClient.Definition.Id);
                 _indexerStatusService.RecordSuccess(remoteAlbum.Release.IndexerId);
             }
+            catch (ReleaseUnavailableException)
+            {
+                _logger.Trace("Release {0} no longer available on indexer.", remoteAlbum);
+                throw;
+            }
             catch (ReleaseDownloadException ex)
             {
                 var http429 = ex.InnerException as TooManyRequestsException;

src/NzbDrone.Core/Download/ProcessDownloadDecisions.cs

@@ -6,6 +6,7 @@ using NLog;
 using NzbDrone.Core.DecisionEngine;
 using NzbDrone.Core.Download.Clients;
 using NzbDrone.Core.Download.Pending;
+using NzbDrone.Core.Exceptions;
 using NzbDrone.Core.Indexers;
 
 namespace NzbDrone.Core.Download
@@ -40,6 +41,7 @@ namespace NzbDrone.Core.Download
             var grabbed = new List<DownloadDecision>();
             var pending = new List<DownloadDecision>();
             var failed = new List<DownloadDecision>();
+            var rejected = decisions.Where(d => d.Rejected).ToList();
 
             var usenetFailed = false;
             var torrentFailed = false;
@@ -74,6 +76,11 @@ namespace NzbDrone.Core.Download
                     _downloadService.DownloadReport(remoteAlbum);
                     grabbed.Add(report);
                 }
+                catch (ReleaseUnavailableException)
+                {
+                    _logger.Warn("Failed to download release from indexer, no longer available. " + remoteAlbum);
+                    rejected.Add(report);
+                }
                 catch (Exception ex)
                 {
                     if (ex is DownloadClientUnavailableException || ex is DownloadClientAuthenticationException)
@@ -99,7 +106,7 @@ namespace NzbDrone.Core.Download
 
             pending.AddRange(ProcessFailedGrabs(grabbed, failed));
 
-            return new ProcessedDecisions(grabbed, pending, decisions.Where(d => d.Rejected).ToList());
+            return new ProcessedDecisions(grabbed, pending, rejected);
         }
 
         internal List<DownloadDecision> GetQualifiedReports(IEnumerable<DownloadDecision> decisions)

src/NzbDrone.Core/Download/TorrentClientBase.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Net;
 using MonoTorrent;
 using NzbDrone.Common.Disk;
@@ -160,6 +160,12 @@ namespace NzbDrone.Core.Download
             }
             catch (HttpException ex)
             {
+                if (ex.Response.StatusCode == HttpStatusCode.NotFound)
+                {
+                    _logger.Error(ex, "Downloading torrent file for album '{0}' failed since it no longer exists ({1})", remoteAlbum.Release.Title, torrentUrl);
+                    throw new ReleaseUnavailableException(remoteAlbum.Release, "Downloading torrent failed", ex);
+                }
+
                 if ((int)ex.Response.StatusCode == 429)
                 {
                     _logger.Error("API Grab Limit reached for {0}", torrentUrl);

src/NzbDrone.Core/Download/UsenetClientBase.cs

@@ -1,4 +1,4 @@
-using System.Net;
+using System.Net;
 using NzbDrone.Common.Disk;
 using NzbDrone.Common.Http;
 using NzbDrone.Core.Exceptions;
@@ -46,6 +46,12 @@ namespace NzbDrone.Core.Download
             }
             catch (HttpException ex)
             {
+                if (ex.Response.StatusCode == HttpStatusCode.NotFound)
+                {
+                    _logger.Error(ex, "Downloading nzb file for album '{0}' failed since it no longer exists ({1})", remoteAlbum.Release.Title, url);
+                    throw new ReleaseUnavailableException(remoteAlbum.Release, "Downloading torrent failed", ex);
+                }
+
                 if ((int)ex.Response.StatusCode == 429)
                 {
                     _logger.Error("API Grab Limit reached for {0}", url);

src/NzbDrone.Core/Exceptions/ArtistNotFoundException.cs

@@ -1,4 +1,4 @@
-using NzbDrone.Common.Exceptions;
+using NzbDrone.Common.Exceptions;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -8,24 +8,24 @@ namespace NzbDrone.Core.Exceptions
 {
     public class ArtistNotFoundException : NzbDroneException
     {
-        public string SpotifyId { get; set; }
+        public string MusicBrainzId { get; set; }
 
-        public ArtistNotFoundException(string spotifyId)
-            : base(string.Format("Artist with SpotifyId {0} was not found, it may have been removed from Spotify.", spotifyId))
+        public ArtistNotFoundException(string musicbrainzId)
+            : base(string.Format("Artist with MusicBrainz {0} was not found, it may have been removed from MusicBrainz.", musicbrainzId))
         {
-            SpotifyId = spotifyId;
+            MusicBrainzId = musicbrainzId;
         }
 
-        public ArtistNotFoundException(string spotifyId, string message, params object[] args)
+        public ArtistNotFoundException(string musicbrainzId, string message, params object[] args)
             : base(message, args)
         {
-            SpotifyId = spotifyId;
+            MusicBrainzId = musicbrainzId;
         }
 
-        public ArtistNotFoundException(string spotifyId, string message)
+        public ArtistNotFoundException(string musicbrainzId, string message)
             : base(message)
         {
-            SpotifyId = spotifyId;
+            MusicBrainzId = musicbrainzId;
         }
     }
 }

src/NzbDrone.Core/Exceptions/ReleaseUnavailableException.cs

@@ -0,0 +1,28 @@
+using System;
+using NzbDrone.Core.Parser.Model;
+
+namespace NzbDrone.Core.Exceptions
+{
+    public class ReleaseUnavailableException : ReleaseDownloadException
+    {
+        public ReleaseUnavailableException(ReleaseInfo release, string message, params object[] args)
+            : base(release, message, args)
+        {
+        }
+
+        public ReleaseUnavailableException(ReleaseInfo release, string message)
+            : base(release, message)
+        {
+        }
+
+        public ReleaseUnavailableException(ReleaseInfo release, string message, Exception innerException, params object[] args)
+            : base(release, message, innerException, args)
+        {
+        }
+
+        public ReleaseUnavailableException(ReleaseInfo release, string message, Exception innerException)
+            : base(release, message, innerException)
+        {
+        }
+    }
+}

src/NzbDrone.Core/Exceptions/SeriesNotFoundException.cs

@@ -1,27 +0,0 @@
-using NzbDrone.Common.Exceptions;
-
-namespace NzbDrone.Core.Exceptions
-{
-    public class SeriesNotFoundException : NzbDroneException
-    {
-        public int TvdbSeriesId { get; set; }
-
-        public SeriesNotFoundException(int tvdbSeriesId)
-            : base(string.Format("Series with tvdbid {0} was not found, it may have been removed from TheTVDB.", tvdbSeriesId))
-        {
-            TvdbSeriesId = tvdbSeriesId;
-        }
-
-        public SeriesNotFoundException(int tvdbSeriesId, string message, params object[] args)
-            : base(message, args)
-        {
-            TvdbSeriesId = tvdbSeriesId;
-        }
-
-        public SeriesNotFoundException(int tvdbSeriesId, string message)
-            : base(message)
-        {
-            TvdbSeriesId = tvdbSeriesId;
-        }
-    }
-}

src/NzbDrone.Core/NzbDrone.Core.csproj

@@ -417,7 +417,7 @@
     <Compile Include="Exceptions\BadRequestException.cs" />
     <Compile Include="Exceptions\DownstreamException.cs" />
     <Compile Include="Exceptions\NzbDroneClientException.cs" />
-    <Compile Include="Exceptions\SeriesNotFoundException.cs" />
+    <Compile Include="Exceptions\ReleaseUnavailableException.cs" />
     <Compile Include="Exceptions\ReleaseDownloadException.cs" />
     <Compile Include="Exceptions\StatusCodeToExceptions.cs" />
     <Compile Include="Extras\ExistingExtraFileService.cs" />