Support tracking feature channels (#186)

src/dnvm/Channel.cs

@@ -13,7 +13,8 @@ public static class Channels
 {
     public static string GetDesc(this Channel c) => c switch
     {
-        Channel.Versioned v => $"The latest version in the {v} support channel",
+        Channel.VersionedMajorMinor v => $"The latest version in the {v} support channel",
+        Channel.VersionedFeature v => $"The latest version in the {v} support channel",
         Channel.Lts => "The latest version in Long-Term support",
         Channel.Sts => "The latest version in Short-Term support",
         Channel.Latest => "The latest supported version from either the LTS or STS support channels.",
@@ -30,7 +31,12 @@ private Channel() { }
     /// <summary>
     /// A major-minor versioned channel.
     /// </summary>
-    public sealed partial record Versioned(int Major, int Minor) : Channel;
+    public sealed partial record VersionedMajorMinor(int Major, int Minor) : Channel;
+    /// <summary>
+    /// A major-minor-patch versioned channel.
+    /// </summary>
+    /// <param name="FeatureLevel"> The feature level of the version, e.g. 1 in 9.0.100</param>
+    public sealed partial record VersionedFeature(int Major, int Minor, int FeatureLevel) : Channel;
     /// <summary>
     /// Newest Long Term Support release.
     /// </summary>
@@ -67,10 +73,14 @@ void ISerialize<Channel>.Serialize(Channel channel, ISerializer serializer)
             => serializer.SerializeString(channel.GetLowerName());
     }
 
-    partial record Versioned
+    partial record VersionedMajorMinor
     {
         public override string GetDisplayName() => $"{Major}.{Minor}";
     }
+    partial record VersionedFeature
+    {
+        public override string GetDisplayName() => $"{Major}.{Minor}.{FeatureLevel}xx";
+    }
     partial record Lts : Channel
     {
         public override string GetDisplayName() => "LTS";
@@ -103,13 +113,24 @@ public static Channel FromString(string str)
             case "preview": return new Preview();
             default:
                 var components = str.Split('.');
-                if (components.Length != 2)
+                switch (components)
                 {
-                    throw new DeserializeException($"Invalid channel version: {str}");
+                    case [_, _]:
+                        var major = int.Parse(components[0]);
+                        var minor = int.Parse(components[1]);
+                        return new VersionedMajorMinor(major, minor);
+                    case [_, _, _]:
+                        if (components[2] is not [<= '9' and >= '0', 'x', 'x'])
+                        {
+                            throw new DeserializeException($"Feature band must be 3 characters and end in 'xx': {str}");
+                        }
+                        major = int.Parse(components[0]);
+                        minor = int.Parse(components[1]);
+                        var featureLevel = components[2][0] - '0';
+                        return new VersionedFeature(major, minor, featureLevel);
+                    default:
+                        throw new DeserializeException($"Invalid channel version: {str}");
                 }
-                var major = int.Parse(components[0]);
-                var minor = int.Parse(components[1]);
-                return new Versioned(major, minor);
         }
     }
 

src/dnvm/DotnetReleasesIndex.cs

@@ -63,7 +63,8 @@ await CancelScope.WithTimeoutAfter(DnvmEnv.DefaultTimeout,
                 or (Channel.Sts, "active", "sts")
                 or (Channel.Preview, "go-live", _)
                 or (Channel.Preview, "preview", _) => true,
-                (Channel.Versioned v, _, _) when v.ToString() == releaseVersion.ToMajorMinor() => true,
+                (Channel.VersionedMajorMinor v, _, _) when v.ToString() == releaseVersion.ToMajorMinor() => true,
+                (Channel.VersionedFeature v, _, _) when v.ToString() == releaseVersion.ToFeature() => true,
                 _ => false
             };
             if (found &&
@@ -163,4 +164,4 @@ public partial record File
         public required string Rid { get; init; }
         public string? Hash { get; init; } = null;
     }
-}
+}

src/dnvm/InstallCommand.cs

@@ -45,7 +45,7 @@ public static async Task<Result> Run(DnvmEnv env, Logger logger, CommandArgument
         }
 
         var sdkVersion = options.SdkVersion;
-        var channel = new Channel.Versioned(sdkVersion.Major, sdkVersion.Minor);
+        var channel = new Channel.VersionedMajorMinor(sdkVersion.Major, sdkVersion.Minor);
 
         if (!options.Force && manifest.InstalledSdks.Any(s => s.SdkVersion == sdkVersion && s.SdkDirName == sdkDir))
         {
@@ -351,4 +351,4 @@ @echo off
             }
         }
     }
-}
+}

src/dnvm/TrackCommand.cs

@@ -148,7 +148,7 @@ internal static async Task<Result> InstallLatestFromChannel(
             //   2. The channel is supported but there are currently no builds available
             // We want to provide a helpful error message about the first case, but let the second
             // case go through without attempting to install anything.
-            if (channel is Channel.Versioned)
+            if (channel is Channel.VersionedMajorMinor or Channel.VersionedFeature)
             {
                 logger.Error($"Could not find channel '{channel}' in the dotnet releases index.");
                 return Result.UnknownChannel;

src/dnvm/Utilities/Utilities.cs

@@ -159,6 +159,17 @@ public static void ChmodExec(IFileSystem vfs, UPath upath)
 
     public static string ToMajorMinor(this SemVersion version) => $"{version.Major}.{version.Minor}";
 
+    public static string ToFeature(this SemVersion version)
+    {
+        int feature = version.Patch;
+        while (feature >= 10)
+        {
+            feature /= 10;
+        }
+
+        return $"{version.Major}.{version.Minor}.{feature}xx";
+    }
+
     public static string SeqToString<T>(this IEnumerable<T> e)
     {
         return "[ " + string.Join(", ", e) + " ]";
@@ -337,4 +348,4 @@ public override string ToString()
             Libc.Musl => string.Join('-', os, arch, "musl")
         };
     }
-}
+}

test/UnitTests/CommandLineTests.cs

@@ -86,16 +86,33 @@ public void TrackMajorMinor()
             "99.99"
         ]);
         Assert.True(options!.Command is CommandArguments.TrackArguments {
-            Channel: Channel.Versioned { Major: 99, Minor: 99 }
+            Channel: Channel.VersionedMajorMinor { Major: 99, Minor: 99 }
         });
     }
 
     [Fact]
-    public void TrackBadChannel()
+    public void TrackFeature()
+    {
+        var options = CommandLineArguments.ParseRaw(new TestConsole(), [
+            "track",
+            "99.99.9xx"
+        ]);
+        Assert.True(options!.Command is CommandArguments.TrackArguments {
+            Channel: Channel.VersionedFeature { Major: 99, Minor: 99, FeatureLevel: 9 }
+        });
+    }
+
+    [Theory]
+    [InlineData("badchannel")]
+    [InlineData("99.99.9x")]
+    [InlineData("99.99.9xxx")]
+    [InlineData("99.99.900")]
+    [InlineData("99.99.axx")]
+    public void TrackBadChannel(string channel)
     {
         var ex = Assert.Throws<ArgumentSyntaxException>(() => CommandLineArguments.ParseRaw(new TestConsole(), [
             "track",
-            "badversion"
+            channel
         ]));
         var tab = "\t";
         Assert.Equal($"""
@@ -440,4 +457,4 @@ to the .dotnet folder in the same directory.
 
 """.NormalizeLineEndings(), console.Output.TrimLines());
     }
-}
+}

test/UnitTests/TrackTests.cs

@@ -156,7 +156,24 @@ public Task ChannelOverlap() => RunWithServer(async (server, env) =>
     [Fact]
     public Task TrackMajorMinor() => RunWithServer(async (server, env) =>
     {
-        var result = await TrackCommand.Run(env, _logger, new() { Channel = new Channel.Versioned(99, 99) });
+        var result = await TrackCommand.Run(env, _logger, new() { Channel = new Channel.VersionedMajorMinor(99, 99) });
+        Assert.Equal(TrackCommand.Result.Success, result);
+
+        var manifest = await env.ReadManifest();
+        var version = SemVersion.Parse("99.99.99-preview", SemVersionStyles.Strict);
+        Assert.Equal([ new() {
+            ReleaseVersion = version,
+            SdkVersion = version,
+            RuntimeVersion = version,
+            AspNetVersion = version,
+            SdkDirName = DnvmEnv.DefaultSdkDirName
+        } ], manifest.InstalledSdks);
+    });
+
+    [Fact]
+    public Task TrackFeature() => RunWithServer(async (server, env) =>
+    {
+        var result = await TrackCommand.Run(env, _logger, new() { Channel = new Channel.VersionedFeature(99, 99, 9) });
         Assert.Equal(TrackCommand.Result.Success, result);
 
         var manifest = await env.ReadManifest();
@@ -219,4 +236,4 @@ public Task TrackNoBuilds() => RunWithServer(async (mockServer, env) =>
             InstalledSdkVersions = [ ]
         }], manifest.RegisteredChannels);
     });
-}
+}