Record the inputs of a build's source fingerprint in its build record (issue 1215)

cmd/mesh-builder/main.go

@@ -432,6 +432,7 @@ func answer(ctx context.Context, publisher builder.Publisher, on, workspace stri
 			}
 			result.Against = built.Against
 			result.SourceFingerprint = built.Source
+			result.SourceInputs = built.SourceInputs
 			// What the walk did instead of building, or why it built (novox/hq ADR 0350 §3, §4).
 			result.ReuseKey = built.ReuseKey
 			if built.Reused != nil {

cmd/mesh-controller/build.go

@@ -153,6 +153,7 @@ func buildFrom(result link.BuildResult) inventory.Build {
 		Path: result.Path,
 		// What it was made from (novox/hq issue 280): two builds with one are one build.
 		SourceFingerprint: result.SourceFingerprint,
+		SourceInputs:      result.SourceInputs,
 		// And its reuse key (novox/hq ADR 0350 §1), which the chain names (ADR 0408 §1).
 		ReuseKey: result.ReuseKey,
 	}

cmd/mesh-controller/build_test.go

@@ -2,10 +2,12 @@ package main
 
 import (
 	"bytes"
+	"reflect"
 	"strings"
 	"testing"
 	"time"
 
+	sdkdelivery "git.novox.be/novox/mesh-sdk/go/delivery"
 	"github.com/novox/mesh-controller/internal/inventory"
 	"github.com/novox/mesh-controller/internal/link"
 )
@@ -66,3 +68,12 @@ func TestBuildsSaysTheSourceFingerprint(t *testing.T) {
 		t.Errorf("the other lines changed:\n%s\nwant\n%s", plain.String(), want)
 	}
 }
+
+// 1215/AC4: what the builder said of the inputs is what the controller keeps of the build.
+func TestTheControllerKeepsTheInputsABuilderSaid(t *testing.T) {
+	in := &sdkdelivery.SourceInputs{Module: "mailu", Tree: "t", Toolchains: map[string]string{"code": "ts sha256:aa 01"}}
+	kept := buildFrom(link.BuildResult{ID: "build-1", Repository: "r", Commit: "c", SourceFingerprint: "src1:x", SourceInputs: in})
+	if !reflect.DeepEqual(kept.SourceInputs, in) {
+		t.Errorf("the controller keeps %+v, the builder said %+v", kept.SourceInputs, in)
+	}
+}