Add Go Build Tags Support

src/CommunityToolkit.Aspire.Hosting.Golang/GolangAppHostingExtension.cs

@@ -15,16 +15,27 @@ public static class GolangAppHostingExtension
     /// <param name="name">The name of the resource.</param>
     /// <param name="workingDirectory">The working directory to use for the command. If null, the working directory of the current process is used.</param>
     /// <param name="args">The optinal arguments to be passed to the executable when it is started.</param>
+    /// <param name="buildTags">The optional build tags to be used when building the Golang application.</param>
     /// <returns>A reference to the <see cref="IResourceBuilder{T}"/>.</returns>
-    public static IResourceBuilder<GolangAppExecutableResource> AddGolangApp(this IDistributedApplicationBuilder builder, [ResourceName] string name, string workingDirectory, string[]? args = null)
+    public static IResourceBuilder<GolangAppExecutableResource> AddGolangApp(this IDistributedApplicationBuilder builder, [ResourceName] string name, string workingDirectory, string[]? args = null, string[]? buildTags = null)
     {
         ArgumentNullException.ThrowIfNull(builder, nameof(builder));
         ArgumentException.ThrowIfNullOrWhiteSpace(name, nameof(name));
         ArgumentException.ThrowIfNullOrWhiteSpace(workingDirectory, nameof(workingDirectory));
 
-        string[] allArgs = args is { Length: > 0 }
-            ? ["run", ".", .. args]
-            : ["run", ".",];
+        string[] allArgs;
+        if (buildTags is { Length: > 0 })
+        {
+            allArgs = args is { Length: > 0 }
+                ? ["run", "-tags", string.Join(",", buildTags), ".", .. args ?? []]
+                : ["run", "-tags", string.Join(",", buildTags), "."];
+        }
+        else
+        {
+            allArgs = args is { Length: > 0 }
+                ? ["run", ".", .. args]
+                : ["run", ".",];
+        }
 
         workingDirectory = Path.Combine(builder.AppHostDirectory, workingDirectory).NormalizePathForCurrentPlatform();
         var resource = new GolangAppExecutableResource(name, workingDirectory);

tests/CommunityToolkit.Aspire.Hosting.Golang.Tests/ResourceCreationTests.cs

@@ -21,4 +21,41 @@ public void DefaultGolangApp()
 
         Assert.Equal("go", resource.Command);
     }
+
+    [Fact]
+    public async Task GolangAppWithBuildTagsAsync()
+    {
+        var builder = DistributedApplication.CreateBuilder();
+
+        builder.AddGolangApp("golang", "../../examples/golang/gin-api", buildTags: ["dev"]);
+
+        using var app = builder.Build();
+
+        var appModel = app.Services.GetRequiredService<DistributedApplicationModel>();
+
+        var resource = appModel.Resources.OfType<GolangAppExecutableResource>().SingleOrDefault();
+
+        Assert.NotNull(resource);
+
+        var args = await resource.GetArgumentValuesAsync();
+        Assert.Collection(
+            args,
+            arg =>
+            {
+                Assert.Equal("run", arg);
+            },
+            arg =>
+            {
+                Assert.Equal("-tags", arg);
+            },
+            arg =>
+            {
+                Assert.Equal("dev", arg);
+            },
+            arg =>
+            {
+                Assert.Equal(".", arg);
+            }
+        );
+    }
 }