db/prefixes/prefixes.go

@@ -285,20 +285,112 @@ type ClaimToTXOKey struct {
 }
 
 type ClaimToTXOValue struct {
-	TxNum                   int32  `json:"tx_num"`
+	TxNum                   uint32 `json:"tx_num"`
-	Position                int32  `json:"position"`
+	Position                uint16 `json:"position"`
-	RootTxNum               int32  `json:"root_tx_num"`
+	RootTxNum               uint32 `json:"root_tx_num"`
-	RootPosition            int32  `json:"root_position"`
+	RootPosition            uint16 `json:"root_position"`
-	Amount                  int32  `json:"amount"`
+	Amount                  uint64 `json:"amount"`
 	ChannelSignatureIsValid bool   `json:"channel_signature_is_valid"`
 	Name                    string `json:"name"`
 }
 
 func (v *ClaimToTXOValue) NormalizedName() string {
-	//TODO implemented
+	//TODO implement
 	return v.Name
 }
 
+func (k *ClaimToTXOKey) PackKey() []byte {
+	prefixLen := 1
+	// b'>20s'
+	n := prefixLen + 20
+	key := make([]byte, n)
+	copy(key, k.Prefix)
+	copy(key[prefixLen:], k.ClaimHash[:20])
+
+	return key
+}
+
+func (v *ClaimToTXOValue) PackValue() []byte {
+	nameLen := len(v.Name)
+	n := 4 + 2 + 4 + 2 + 8 + 1 + 2 + nameLen
+	value := make([]byte, n)
+	binary.BigEndian.PutUint32(value, v.TxNum)
+	binary.BigEndian.PutUint16(value[4:], v.Position)
+	binary.BigEndian.PutUint32(value[6:], v.RootTxNum)
+	binary.BigEndian.PutUint16(value[10:], v.RootPosition)
+	binary.BigEndian.PutUint64(value[12:], v.Amount)
+	var bitSetVar uint8
+	if v.ChannelSignatureIsValid {
+		bitSetVar = 1
+	}
+	value[20] = bitSetVar
+	binary.BigEndian.PutUint16(value[21:], uint16(nameLen))
+	copy(value[23:], []byte(v.Name[:nameLen]))
+
+	return value
+}
+
+func ClaimToTXOKeyPackPartialNFields(nFields int) func(*ClaimToTXOKey) []byte {
+	return func(u *ClaimToTXOKey) []byte {
+		return ClaimToTXOKeyPackPartial(u, nFields)
+	}
+}
+
+func ClaimToTXOKeyPackPartial(k *ClaimToTXOKey, nFields int) []byte {
+	// Limit nFields between 0 and number of fields, we always at least need
+	// the prefix, and we never need to iterate past the number of fields.
+	if nFields > 1 {
+		nFields = 1
+	}
+	if nFields < 0 {
+		nFields = 0
+	}
+
+	// b'>4sLH'
+	prefixLen := 1
+	var n = prefixLen
+	for i := 0; i <= nFields; i++ {
+		switch i {
+		case 1:
+			n += 20
+		}
+	}
+
+	key := make([]byte, n)
+
+	for i := 0; i <= nFields; i++ {
+		switch i {
+		case 0:
+			copy(key, k.Prefix)
+		case 1:
+			copy(key[prefixLen:], k.ClaimHash[:20])
+		}
+	}
+
+	return key
+}
+
+func ClaimToTXOKeyUnpack(key []byte) *ClaimToTXOKey {
+	prefixLen := 1
+	return &ClaimToTXOKey{
+		Prefix:    key[:prefixLen],
+		ClaimHash: key[prefixLen : prefixLen+20],
+	}
+}
+
+func ClaimToTXOValueUnpack(value []byte) *ClaimToTXOValue {
+	nameLen := binary.BigEndian.Uint16(value[21:])
+	return &ClaimToTXOValue{
+		TxNum:                   binary.BigEndian.Uint32(value),
+		Position:                binary.BigEndian.Uint16(value[4:]),
+		RootTxNum:               binary.BigEndian.Uint32(value[6:]),
+		RootPosition:            binary.BigEndian.Uint16(value[10:]),
+		Amount:                  binary.BigEndian.Uint64(value[12:]),
+		ChannelSignatureIsValid: value[20] == 1,
+		Name:                    string(value[23 : 23+nameLen]),
+	}
+}
+
 /*
 class TXOToClaimKey(typing.NamedTuple):
     tx_num: int
@@ -2390,7 +2482,7 @@ func UnpackGenericKey(key []byte) (byte, interface{}, error) {
 		return SupportToClaim, SupportToClaimKeyUnpack(key), nil
 
 	case ClaimToTXO:
-		return 0x0, nil, errors.Base("key unpack function for %v not implemented", firstByte)
+		return ClaimToTXO, ClaimToTXOKeyUnpack(key), nil
 	case TXOToClaim:
 		return TXOToClaim, TXOToClaimKeyUnpack(key), nil
 
@@ -2461,7 +2553,7 @@ func UnpackGenericValue(key, value []byte) (byte, interface{}, error) {
 		return SupportToClaim, SupportToClaimValueUnpack(value), nil
 
 	case ClaimToTXO:
-		return 0x0, nil, errors.Base("value unpack not implemented for key %v", key)
+		return ClaimToTXO, ClaimToTXOValueUnpack(value), nil
 	case TXOToClaim:
 		return TXOToClaim, TXOToClaimValueUnpack(value), nil
 

db/prefixes/prefixes_test.go

@@ -44,6 +44,82 @@ func testInit(filePath string) (*grocksdb.DB, [][]string, func()) {
 	return db, records, toDefer
 }
 
+func TestClaimToTXO(t *testing.T) {
+
+	filePath := "../../resources/claim_to_txo.csv"
+
+	wOpts := grocksdb.NewDefaultWriteOptions()
+	db, records, toDefer := testInit(filePath)
+	defer toDefer()
+	for _, record := range records {
+		key, err := hex.DecodeString(record[0])
+		if err != nil {
+			log.Println(err)
+		}
+		val, err := hex.DecodeString(record[1])
+		if err != nil {
+			log.Println(err)
+		}
+		db.Put(wOpts, key, val)
+	}
+	// test prefix
+	options := dbpkg.NewIterateOptions().WithPrefix([]byte{prefixes.ClaimToTXO}).WithIncludeValue(true)
+	ch := dbpkg.Iter(db, options)
+	var i = 0
+	for kv := range ch {
+		// log.Println(kv.Key)
+		gotKey := kv.Key.(*prefixes.ClaimToTXOKey).PackKey()
+
+		keyPartial1 := prefixes.ClaimToTXOKeyPackPartial(kv.Key.(*prefixes.ClaimToTXOKey), 1)
+
+		// Check pack partial for sanity
+		if !bytes.HasPrefix(gotKey, keyPartial1) {
+			t.Errorf("%+v should be prefix of %+v\n", keyPartial1, gotKey)
+		}
+
+		got := kv.Value.(*prefixes.ClaimToTXOValue).PackValue()
+		wantKey, err := hex.DecodeString(records[i][0])
+		if err != nil {
+			log.Println(err)
+		}
+		want, err := hex.DecodeString(records[i][1])
+		if err != nil {
+			log.Println(err)
+		}
+		if !bytes.Equal(gotKey, wantKey) {
+			t.Errorf("gotKey: %+v, wantKey: %+v\n", got, want)
+		}
+		if !bytes.Equal(got, want) {
+			t.Errorf("got: %+v, want: %+v\n", got, want)
+		}
+		i++
+	}
+
+	// Test start / stop
+	start, err := hex.DecodeString(records[0][0])
+	if err != nil {
+		log.Println(err)
+	}
+	stop, err := hex.DecodeString(records[9][0])
+	if err != nil {
+		log.Println(err)
+	}
+	options2 := dbpkg.NewIterateOptions().WithStart(start).WithStop(stop).WithIncludeValue(true)
+	ch2 := dbpkg.Iter(db, options2)
+	i = 0
+	for kv := range ch2 {
+		got := kv.Value.(*prefixes.ClaimToTXOValue).PackValue()
+		want, err := hex.DecodeString(records[i][1])
+		if err != nil {
+			log.Println(err)
+		}
+		if !bytes.Equal(got, want) {
+			t.Errorf("got: %+v, want: %+v\n", got, want)
+		}
+		i++
+	}
+}
+
 func TestTXOToClaim(t *testing.T) {
 
 	filePath := "../../resources/txo_to_claim.csv"

main.go

@@ -38,7 +38,7 @@ func main() {
 
 		options := &db.IterOptions{
 			FillCache:    false,
-			Prefix:       []byte{prefixes.TXOToClaim},
+			Prefix:       []byte{prefixes.ClaimToTXO},
 			Start:        nil,
 			Stop:         nil,
 			IncludeStart: true,
@@ -49,7 +49,7 @@ func main() {
 			RawValue:     true,
 		}
 
-		db.ReadWriteRawN(dbVal, options, "./resources/txo_to_claim.csv", 10)
+		db.ReadWriteRawN(dbVal, options, "./resources/claim_to_txo.csv", 10)
 
 		return
 	}

resources/claim_to_txo.csv

@@ -0,0 +1,10 @@
+45000000a420c44374f4f399ab4807fa1901eefc87,0297ec2100000297ec21000000000000000f42400100246167656e63652d64c3a974727569742c2d6e6f7576656175782d736b696e732d6c65616b
+45000000c27eef5ea69e0d73f118826c7e326bb469,00371d66000000371d660000000000001dcd650001000e4d696e696174757265486f757365
+4500000110e40894573f528c393fbcec7a472ec853,01516b32000001516b3200000000000000989680010021696f2d3137372d4e6f616d2d43686f6d736b792d6f6e2d434f494e54454c50524f
+4500000324e40fcb63a0b517a3660645e9bd99244a,030bb6ba0000030bb6ba000000000000000f424001001b436f6e616e2d4578696c65732d526169642d4561726c792d457261
+45000003d1538a0f19f5cd4bc1a62cc294f5c89934,011c7c990000011c7c99000000000000000f424001001130322d636172726167652d68616e646c65
+45000008d47beeff8325e795a8604226145b01702b,02dbb2a2000002dbb2a2000000000000000186a001001039643336363661336161313231376138
+4500000906499e073e94370ceff37cb21c28212444,0369842d00000369842d000000000000000186a001001033333465356465363139306534323466
+45000009c3172e034a255f3c03566dca84bb9f046a,0225c69c000002251b0f0000000000000007a120010028617574686f722d73746f726965732d706f64636173742d657069736f64652d3734332d6b6172656e
+45000009ca6e0caaaef16872b4bd4f6f1b8c2363e2,02b16956000002b16956000000000000000f4240010027554e2d504f55522d43454e542d28312d292d28536f72616c2c2d4162c3a963c3a9646169726529
+4500000ad9ded2e15d18987900d09e9b29ef33d03e,02c972b3000002c972b3000000000000000186a0010006313331333333