Remove vertical priority list (#46741)

Author: jkoritzinsky

src/SourceBuild/content/eng/tools/tasks/Microsoft.DotNet.UnifiedBuild.Tasks/ManifestAssets/JoinVerticalsAssetSelector.cs

@@ -106,13 +106,9 @@ bool IsExternalAsset(ManifestAsset asset)
             }
 
             // Apply general priority ordered list of primary verticals
-            foreach (string primaryVerticalName in _config.PriorityVerticals)
+            if (verticalNames.Contains(_config.PriorityVertical, StringComparer.OrdinalIgnoreCase))
             {
-                string? verticalName = verticalNames.FirstOrDefault(verticalName => VerticalNameMatches(verticalName, primaryVerticalName));
-                if (verticalName != null)
-                {
-                    return (AssetVerticalMatchType.PriorityVerticals, verticalName);
-                }
+                return (AssetVerticalMatchType.PriorityVerticals, _config.PriorityVertical);
             }
 
             // Select first vertical from the list and report it as ambiguous match

src/SourceBuild/content/eng/tools/tasks/Microsoft.DotNet.UnifiedBuild.Tasks/ManifestAssets/JoinVerticalsConfig.cs

@@ -10,22 +10,13 @@ namespace Microsoft.DotNet.UnifiedBuild.Tasks.ManifestAssets
 {
     public class JoinVerticalsConfig
     {
-        public IReadOnlyList<string> PriorityVerticals { get; set; } = [];
+        public required string PriorityVertical { get; init; }
 
         public static JoinVerticalsConfig GetDefaultConfig()
         {
             JoinVerticalsConfig joinVerticalsConfig = new JoinVerticalsConfig
             {
-                PriorityVerticals = [
-                    "Windows_x64_BuildPass2",
-                    "Windows_x64",
-                    "OSX_arm64",
-                    "AzureLinux_x64_Cross_x64",
-                    "AzureLinux_x64_Cross_arm64",
-                    "Android_Shortstack_x64",
-                    "Browser_Shortstack_wasm",
-                    "iOS_Shortstack_arm64"
-                ]
+                PriorityVertical = "Windows_x64"
             };
             return joinVerticalsConfig;
         }

src/SourceBuild/content/test/Microsoft.DotNet.Tests/JoinVertialsTests.cs

@@ -35,39 +35,6 @@ public void LoadVerticalManifestTest()
             Assert.Equal("Windows_x64", manifest.GetAttribute("VerticalName"));
         }
 
-        [Fact]
-        public void JoinVerticalsExampleTest()
-        {
-            // prepare
-            HashSet<string> verticalNames = [
-                "Windows_x64", "Windows_x86", "Windows_x64_BuildPass2",
-                "AzureLinux_x64_Cross_x64", "AzureLinux_x64_Cross_Alpine_x64",
-                "OSX_x64", "OSX_arm64", ];
-            var manifests = verticalNames.Select(LoadVerticalManifest);
-
-            JoinVerticalsConfig joinVerticalsConfig = new JoinVerticalsConfig
-            {
-                PriorityVerticals = [
-                    "Windows_x64_BuildPass2",
-                    "Windows_x64",
-                    "AzureLinux_x64_Cross_x64",
-                    "OSX_arm64",
-                ]
-            };
-            JoinVerticalsAssetSelector joinVerticalsAssetSelector = new JoinVerticalsAssetSelector(joinVerticalsConfig);
-
-            // act
-            var selectedVerticals = joinVerticalsAssetSelector.SelectAssetMatchingVertical(manifests).ToList();
-
-            // assert
-            PrintTestSelectionResult(selectedVerticals, verticalNames);
-            Assert.NotNull(selectedVerticals);
-            Assert.Equal(verticalNames.Count(), selectedVerticals.GroupBy(o => o.VerticalName).Count());
-            Assert.Contains(selectedVerticals, o => o.MatchType == AssetVerticalMatchType.ExactMatch);
-            Assert.Contains(selectedVerticals, o => o.MatchType == AssetVerticalMatchType.PriorityVerticals);
-            Assert.DoesNotContain(selectedVerticals, o => o.MatchType == AssetVerticalMatchType.NotSpecified);
-        }
-
         [Fact]
         public void JoinVerticalsCheckAllAmbiguitiesTest()
         {