[VIndex] calculate and confirm input log hash

go.mod

@@ -15,14 +15,40 @@ require (
 )
 
 require (
+	github.com/DataDog/zstd v1.4.5 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cenkalti/backoff/v5 v5.0.2 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/cockroachdb/errors v1.11.3 // indirect
+	github.com/cockroachdb/fifo v0.0.0-20240606204812-0bbfbd93a7ce // indirect
+	github.com/cockroachdb/logtags v0.0.0-20230118201751-21c54148d20b // indirect
+	github.com/cockroachdb/pebble v1.1.5 // indirect
+	github.com/cockroachdb/redact v1.1.5 // indirect
+	github.com/cockroachdb/tokenbucket v0.0.0-20230807174530-cc333fc44b06 // indirect
+	github.com/getsentry/sentry-go v0.27.0 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
+	github.com/klauspost/compress v1.18.0 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/prometheus/client_golang v1.15.0 // indirect
+	github.com/prometheus/client_model v0.3.0 // indirect
+	github.com/prometheus/common v0.42.0 // indirect
+	github.com/prometheus/procfs v0.9.0 // indirect
+	github.com/rogpeppe/go-internal v1.13.1 // indirect
 	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
 	go.opentelemetry.io/otel v1.37.0 // indirect
 	go.opentelemetry.io/otel/metric v1.37.0 // indirect
 	go.opentelemetry.io/otel/trace v1.37.0 // indirect
 	golang.org/x/crypto v0.40.0 // indirect
 	golang.org/x/exp v0.0.0-20240325151524-a685a6edb6d8 // indirect
+	golang.org/x/sys v0.34.0 // indirect
+	golang.org/x/text v0.27.0 // indirect
+	google.golang.org/protobuf v1.36.6 // indirect
 )

go.sum

@@ -1,24 +1,79 @@
 filippo.io/torchwood v0.5.1-0.20250605130057-fa65d721a6ce h1:8bVOhkZ6uQn3qCmrz/F7Rz0epygH9KO3dgbS9g/zclk=
 filippo.io/torchwood v0.5.1-0.20250605130057-fa65d721a6ce/go.mod h1:n82QaQC2EzvctEMkM1KAahZaAcQ2uZoCdn051sUXOQY=
+github.com/DataDog/zstd v1.4.5 h1:EndNeuB0l9syBZhut0wns3gV1hL8zX8LIu6ZiVHWLIQ=
+github.com/DataDog/zstd v1.4.5/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
+github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
+github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/cenkalti/backoff/v5 v5.0.2 h1:rIfFVxEf1QsI7E1ZHfp/B4DF/6QBAUhmgkxc0H7Zss8=
 github.com/cenkalti/backoff/v5 v5.0.2/go.mod h1:rkhZdG3JZukswDf7f0cwqPNk4K0sa+F97BxZthm/crw=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
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+github.com/cockroachdb/fifo v0.0.0-20240606204812-0bbfbd93a7ce/go.mod h1:9/y3cnZ5GKakj/H4y9r9GTjCvAFta7KLgSHPJJYc52M=
+github.com/cockroachdb/logtags v0.0.0-20230118201751-21c54148d20b h1:r6VH0faHjZeQy818SGhaone5OnYfxFR/+AzdY3sf5aE=
+github.com/cockroachdb/logtags v0.0.0-20230118201751-21c54148d20b/go.mod h1:Vz9DsVWQQhf3vs21MhPMZpMGSht7O/2vFW2xusFUVOs=
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+github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
+github.com/rogpeppe/go-internal v1.13.1 h1:KvO1DLK/DRN07sQ1LQKScxyZJuNnedQ5/wKSR38lUII=
+github.com/rogpeppe/go-internal v1.13.1/go.mod h1:uMEvuHeurkdAXX61udpOXGD/AzZDWNMNyH2VO9fmH0o=
 github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
 github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
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@@ -27,6 +82,8 @@ github.com/transparency-dev/merkle v0.0.2 h1:Q9nBoQcZcgPamMkGn7ghV8XiTZ/kRxn1yCG
 github.com/transparency-dev/merkle v0.0.2/go.mod h1:pqSy+OXefQ1EDUVmAJ8MUhHB9TXGuzVAT58PqBoHz1A=
 github.com/transparency-dev/tessera v0.2.1-0.20250722085756-7303218c6614 h1:EfxzWae/zdnfVA44jFIKohvd2JWlcanRzRYb1A/uiDU=
 github.com/transparency-dev/tessera v0.2.1-0.20250722085756-7303218c6614/go.mod h1:ilpKqGrwDD/6uop5nDj/X60o0qt33GK1uInjIcfZTP0=
+github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 go.opentelemetry.io/auto/sdk v1.1.0 h1:cH53jehLUN6UFLY71z+NDOiNJqDdPRaXzTel0sJySYA=
 go.opentelemetry.io/auto/sdk v1.1.0/go.mod h1:3wSPjt5PWp2RhlCcmmOial7AvC4DQqZb7a7wCow3W8A=
 go.opentelemetry.io/otel v1.37.0 h1:9zhNfelUvx0KBfu/gb+ZgeAfAgtWrfHJZcAqFC228wQ=
@@ -35,14 +92,48 @@ go.opentelemetry.io/otel/metric v1.37.0 h1:mvwbQS5m0tbmqML4NqK+e3aDiO02vsf/Wgbsd
 go.opentelemetry.io/otel/metric v1.37.0/go.mod h1:04wGrZurHYKOc+RKeye86GwKiTb9FKm1WHtO+4EVr2E=
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+google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
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vindex/README.md

@@ -221,14 +221,16 @@ go run ./vindex/cmd/client --base_url http://localhost:8088/vindex/ --lookup=foo
 |  1  | Public code base and documentation for prototype          |   ✅   |
 |  2  | Implementation of in-memory Merkle Radix Tree             |   ✅   |
 |  3  | Incremental update                                        |   ✅   |
-|  4  | Example written for mapping SumDB                         |   ✅   |
-|  5  | Proofs served on Lookup                                   |   ❌   |
-|  6  | Output log                                                |   ❌   |
+|  4  | Verify that mapped data matches Input Log Checkpoint      |   ✅   |
+|  5  | Output log                                                |   ❌   |
+|  6  | Proofs served on Lookup                                   |   ❌   |
 |  7  | Storage backed verifiable-map                             |   ❌   |
-|  8  | Example written for mapping CT                            |   ⚠️   |
-|  9  | MapFn defined in WASM                                     |   ❌   |
-|  10 | Proper repository for this code to live long-term         |   ❌   |
-|  11 | Support reading directly from Input Log instead of Clone  |   ❌   |
+|  8  | MapFn defined in WASM                                     |   ❌   |
+|  9  | Proper repository for this code to live long-term         |   ❌   |
+|  10 | Support reading directly from Input Log instead of Clone  |   ✅   |
+|  11 | Example written for mapping SumDB                         |   ✅   |
+|  12 | Example written for hosting a log and VIndex together     |   ✅   |
+|  13 | Example written for mapping CT                            |   ⚠️   |
 |  N  | Production ready                                          |   ❌   |
 
 

vindex/cmd/logandmap/main.go

@@ -78,11 +78,14 @@ func run(ctx context.Context) error {
 		return errors.New("storage_dir must be set")
 	}
 	inputLogDir := path.Join(*storageDir, "inputlog")
-	walPath := path.Join(*storageDir, "index.wal")
+	mapRoot := path.Join(*storageDir, "vindex")
 
 	if err := os.MkdirAll(inputLogDir, 0o755); err != nil {
 		return fmt.Errorf("failed to create input log directory: %v", err)
 	}
+	if err := os.MkdirAll(mapRoot, 0o755); err != nil {
+		return fmt.Errorf("failed to create vindex directory: %v", err)
+	}
 
 	// Gather the info needed for reading/writing checkpoints
 	ils, ilv := getInputLogSignerVerifierOrDie()
@@ -95,7 +98,7 @@ func run(ctx context.Context) error {
 
 	inputAppender, inputShutdown, inputReader, err := tessera.NewAppender(ctx, ild, tessera.NewAppendOptions().
 		WithCheckpointSigner(ils).
-		WithCheckpointInterval(10*time.Second).
+		WithCheckpointInterval(5*time.Second).
 		WithBatching(256, time.Second))
 	if err != nil {
 		return fmt.Errorf("failed to get appender: %v", err)
@@ -113,7 +116,7 @@ func run(ctx context.Context) error {
 		cp, _, _, err := log.ParseCheckpoint(cpRaw, ilv.Name(), ilv)
 		return cp, err
 	}
-	vi, err := vindex.NewVerifiableIndex(ctx, inputLog, inputLogCpParseFn, mapFnFromFlags(), walPath)
+	vi, err := vindex.NewVerifiableIndex(ctx, inputLog, inputLogCpParseFn, mapFnFromFlags(), mapRoot)
 	if err != nil {
 		return fmt.Errorf("failed to create vindex: %v", err)
 	}
@@ -140,7 +143,10 @@ func (s logReaderSource) Checkpoint(ctx context.Context) (checkpoint []byte, err
 }
 
 func (s logReaderSource) Leaves(ctx context.Context, start, end uint64) iter.Seq2[[]byte, error] {
-	bi := client.EntryBundles(ctx, 2, s.r.IntegratedSize, s.r.ReadEntryBundle, start, end-start)
+	tsf := func(ctx context.Context) (uint64, error) {
+		return end, nil
+	}
+	bi := client.EntryBundles(ctx, 2, tsf, s.r.ReadEntryBundle, start, end-start)
 	unbundleFn := func(bundle []byte) ([][]byte, error) {
 		eb := &api.EntryBundle{}
 		if err := eb.UnmarshalText(bundle); err != nil {
@@ -275,7 +281,7 @@ func getKeyFile(path string) (string, error) {
 }
 
 func mapFnFromFlags() vindex.MapFn {
-	mapFn := func(data []byte) [][32]byte {
+	mapFn := func(data []byte) [][sha256.Size]byte {
 		var entry LogEntry
 		if err := json.Unmarshal(data, &entry); err != nil {
 			panic(fmt.Errorf("failed to unmarshal entry: %v", err))
@@ -285,7 +291,7 @@ func mapFnFromFlags() vindex.MapFn {
 		// This could be changed to return something more complex, e.g. include
 		// a static prefix of "module=", which would allow the same map to host
 		// multiple queries in parallel.
-		return [][32]byte{sha256.Sum256([]byte(entry.Module))}
+		return [][sha256.Size]byte{sha256.Sum256([]byte(entry.Module))}
 	}
 	return mapFn
 }