attestation: add versioned projection to V1

Author: kvinwang

dstack-attest/src/attestation.rs

@@ -490,6 +490,20 @@ impl VersionedAttestation {
         self.to_bytes()
     }
 
+    /// Try to project any version into the V1 attestation schema.
+    pub fn try_into_v1(self) -> Result<SchemaAttestation> {
+        match self {
+            Self::V0 { attestation } => Ok(attestation.into_v1()),
+            Self::V1 { attestation } => Ok(attestation),
+        }
+    }
+
+    /// Turn into V1 attestation schema.
+    pub fn into_v1(self) -> SchemaAttestation {
+        self.try_into_v1()
+            .or_panic("VersionedAttestation should project into V1 attestation")
+    }
+
     /// Try to project any version into the legacy attestation structure.
     pub fn try_into_inner(self) -> Result<Attestation> {
         match self {
@@ -1182,4 +1196,25 @@ mod tests {
         ));
         assert!(matches!(upgraded.stack, SchemaStackEvidence::Dstack { .. }));
     }
+
+    #[test]
+    fn versioned_v0_projects_to_v1() {
+        let projected = dummy_tdx_attestation([5u8; 64]).into_versioned().into_v1();
+        assert!(matches!(
+            projected.platform,
+            SchemaPlatformEvidence::Tdx { .. }
+        ));
+        match projected.stack {
+            SchemaStackEvidence::Dstack {
+                report_data,
+                runtime_events,
+                config,
+            } => {
+                assert_eq!(report_data, vec![5u8; 64]);
+                assert!(runtime_events.is_empty());
+                assert_eq!(config, "{}");
+            }
+            _ => panic!("expected dstack stack"),
+        }
+    }
 }