appendix: 23 Code-Ausschnitte aus dem Houston-Repository

Pin nixpkgs to the revision used by itc.componentware: the channel version ships a latexminted that crashes on Python 3.14, which made every listing fail and sent latexmk into an endless error prompt. Also force nonstopmode/halt-on-error so a broken listing can never loop again.
2026-08-25 21:38:22 +02:00
parent cd3a3e5246
commit bff34658b8
26 changed files with 1101 additions and 20 deletions
@@ -0,0 +1,38 @@
+using Amazon.Runtime;
+using Amazon.S3;
+using Houston.Settings;
+using Microsoft.Extensions.Options;
+
+namespace Houston.Extensions;
+
+public static class DocumentsExtensions
+{
+    extension(IServiceCollection services)
+    {
+        public IServiceCollection AddDocumentsClient()
+        {
+            return services.AddKeyedScoped<IAmazonS3>("Documents", (services, _) =>
+            {
+                var settings = services.GetRequiredService<IOptions<DocumentsSettings>>();
+                var client = new AmazonS3Client(
+                    new BasicAWSCredentials(settings.Value.S3.Key, settings.Value.S3.Secret),
+                    new AmazonS3Config { ServiceURL = settings.Value.S3.Endpoint });
+
+                // The SDK percent-encodes the separators in x-amz-copy-source ("bucket%2Fkey%2Fdoc.pdf").
+                // AWS decodes that again, our S3 splits bucket and key on the first literal slash and ends up
+                // without a key ("Invalid copy source object key"), so the separators are restored here. The
+                // event runs before the signer, hence the corrected value is the one that gets signed.
+                client.BeforeRequestEvent += (_, args) =>
+                {
+                    if (args is WebServiceRequestEventArgs { Headers: { } headers }
+                        && headers.TryGetValue("x-amz-copy-source", out var copySource)
+                        && copySource.Contains("%2F", StringComparison.Ordinal))
+                    {
+                        headers["x-amz-copy-source"] = copySource.Replace("%2F", "/", StringComparison.Ordinal);
+                    }
+                };
+
+                return client;
+            });
+        }
+    }