commit

src/StellaOps.Vexer.Attestation/Models/VexAttestationPredicate.cs

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+using System;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Text.Json.Serialization;
+using StellaOps.Vexer.Core;
+
+namespace StellaOps.Vexer.Attestation.Models;
+
+public sealed record VexAttestationPredicate(
+    string ExportId,
+    string QuerySignature,
+    string ArtifactAlgorithm,
+    string ArtifactDigest,
+    VexExportFormat Format,
+    DateTimeOffset CreatedAt,
+    IReadOnlyList<string> SourceProviders,
+    IReadOnlyDictionary<string, string> Metadata)
+{
+    public static VexAttestationPredicate FromRequest(
+        VexAttestationRequest request,
+        IReadOnlyDictionary<string, string>? metadata = null)
+        => new(
+            request.ExportId,
+            request.QuerySignature.Value,
+            request.Artifact.Algorithm,
+            request.Artifact.Digest,
+            request.Format,
+            request.CreatedAt,
+            request.SourceProviders,
+            metadata is null ? ImmutableDictionary<string, string>.Empty : metadata.ToImmutableDictionary(StringComparer.Ordinal));
+}
+
+public sealed record VexInTotoSubject(
+    string Name,
+    IReadOnlyDictionary<string, string> Digest);
+
+public sealed record VexInTotoStatement(
+    [property: JsonPropertyName("_type")] string Type,
+    string PredicateType,
+    IReadOnlyList<VexInTotoSubject> Subject,
+    VexAttestationPredicate Predicate)
+{
+    public static readonly string InTotoType = "https://in-toto.io/Statement/v0.1";
+}