Implement GetAvailableChannels

Author: dsplaisted

src/Installer/Microsoft.Dotnet.Installation/Internal/DotnetReleaseInfoProvider.cs

@@ -10,7 +10,11 @@ namespace Microsoft.Dotnet.Installation.Internal;
 
 internal class DotnetReleaseInfoProvider : IDotnetReleaseInfoProvider
 {
- public IEnumerable<string> GetAvailableChannels() => throw new NotImplementedException();
+ public IEnumerable<string> GetAvailableChannels()
+ {
+ var releaseManifest = new ReleaseManifest();
+ return releaseManifest.GetAvailableChannels();
+ }
  public ReleaseVersion? GetLatestVersion(InstallComponent component, string channel)
  {
  var releaseManifest = new ReleaseManifest();

src/Installer/Microsoft.Dotnet.Installation/Internal/ReleaseManifest.cs

@@ -53,6 +53,17 @@ internal class ReleaseManifest(HttpClient httpClient) : IDisposable
  return (major, minor, featureBand, isFullySpecified);
  }
 
+ public IEnumerable<string> GetAvailableChannels()
+ {
+
+ return ["latest", "preview", "lts", "sts",
+ ..GetProductCollection()
+ .Where(p => p.IsSupported)
+ .Select(p => p.ProductVersion.ToString())
+ ];
+
+ }
+
  /// <summary>
  /// Finds the latest fully specified version for a given channel string (major, major.minor, or feature band).
  /// </summary>
@@ -64,17 +75,17 @@ internal class ReleaseManifest(HttpClient httpClient) : IDisposable
  if (string.Equals(channel.Name, "lts", StringComparison.OrdinalIgnoreCase) || string.Equals(channel.Name, "sts", StringComparison.OrdinalIgnoreCase))
  {
  var releaseType = string.Equals(channel.Name, "lts", StringComparison.OrdinalIgnoreCase) ? ReleaseType.LTS : ReleaseType.STS;
- var productIndex = ProductCollection.GetAsync().GetAwaiter().GetResult();
+ var productIndex = GetProductCollection();
  return GetLatestVersionByReleaseType(productIndex, releaseType, component);
  }
  else if (string.Equals(channel.Name, "preview", StringComparison.OrdinalIgnoreCase))
  {
- var productIndex = ProductCollection.GetAsync().GetAwaiter().GetResult();
+ var productIndex = GetProductCollection();
  return GetLatestPreviewVersion(productIndex, component);
  }
  else if (string.Equals(channel.Name, "latest", StringComparison.OrdinalIgnoreCase))
  {
- var productIndex = ProductCollection.GetAsync().GetAwaiter().GetResult();
+ var productIndex = GetProductCollection();
  return GetLatestActiveVersion(productIndex, component);
  }
 
@@ -93,7 +104,7 @@ internal class ReleaseManifest(HttpClient httpClient) : IDisposable
  }
 
  // Load the index manifest
- var index = ProductCollection.GetAsync().GetAwaiter().GetResult();
+ var index = GetProductCollection();
  if (minor < 0)
  {
  return GetLatestVersionForMajorOrMajorMinor(index, major, component); // Major Only (e.g., "9")

src/Installer/dnup/Commands/Sdk/Install/SdkInstallCommand.cs

@@ -23,7 +23,7 @@ internal class SdkInstallCommand(ParseResult result) : CommandBase(result)
  private readonly bool _noProgress = result.GetValue(SdkInstallCommandParser.NoProgressOption);
 
  private readonly IDotnetInstallManager _dotnetInstaller = new DotnetInstallManager();
- private readonly IDotnetReleaseInfoProvider _releaseInfoProvider = new EnvironmentVariableMockReleaseInfoProvider();
+ private readonly IDotnetReleaseInfoProvider _releaseInfoProvider = new DotnetReleaseInfoProvider();
  private readonly ManifestChannelVersionResolver _channelVersionResolver = new ManifestChannelVersionResolver();
 
  public override int Execute()