// ValueProto parses the byte slice value into msg.
func (kv *KeyValue) ValueProto(msg proto.Message) error {
if kv.Value == nil {
msg.Reset()
return nil
}
return kv.Value.GetProto(msg)
}
func dbGetProto(rdb *C.DBEngine, key MVCCKey,
msg proto.Message) (ok bool, keyBytes, valBytes int64, err error) {
if len(key.Key) == 0 {
err = emptyKeyError()
return
}
var result C.DBString
if err = statusToError(C.DBGet(rdb, goToCKey(key), &result)); err != nil {
return
}
if result.len <= 0 {
msg.Reset()
return
}
ok = true
if msg != nil {
// Make a byte slice that is backed by result.data. This slice
// cannot live past the lifetime of this method, but we're only
// using it to unmarshal the roachpb.
data := cSliceToUnsafeGoBytes(C.DBSlice(result))
err = proto.Unmarshal(data, msg)
}
C.free(unsafe.Pointer(result.data))
keyBytes = int64(key.EncodedSize())
valBytes = int64(result.len)
return
}
// ValueProto parses the byte slice value as a proto message.
func (kv *KeyValue) ValueProto(msg gogoproto.Message) error {
if kv.Value == nil || kv.Value.Bytes == nil {
msg.Reset()
return nil
}
return gogoproto.Unmarshal(kv.Value.Bytes, msg)
}
func (r *RocksDB) getProtoInternal(key proto.EncodedKey, msg gogoproto.Message,
snapshotHandle *C.DBSnapshot) (ok bool, keyBytes, valBytes int64, err error) {
if len(key) == 0 {
err = emptyKeyError()
return
}
var result C.DBString
if err = statusToError(C.DBGet(r.rdb, snapshotHandle, goToCSlice(key), &result)); err != nil {
return
}
if result.len <= 0 {
msg.Reset()
return
}
ok = true
if msg != nil {
// Make a byte slice that is backed by result.data. This slice
// cannot live past the lifetime of this method, but we're only
// using it to unmarshal the proto.
data := cSliceToUnsafeGoBytes(C.DBSlice(result))
err = gogoproto.Unmarshal(data, msg)
}
C.free(unsafe.Pointer(result.data))
keyBytes = int64(len(key))
valBytes = int64(result.len)
return
}
// ValueProto parses the byte slice value as a proto message.
func (kv *KeyValue) ValueProto(msg proto.Message) error {
if kv.Value == nil || kv.Value.GetRawBytes() == nil {
msg.Reset()
return nil
}
return proto.Unmarshal(kv.Value.GetRawBytes(), msg)
}
// ValueProto parses the byte slice value as a proto message.
func (kv *KeyValue) ValueProto(msg gogoproto.Message) error {
switch val := kv.Value.(type) {
case nil:
msg.Reset()
return nil
case []byte:
return gogoproto.Unmarshal(val, msg)
}
return fmt.Errorf("unable to unmarshal proto: %T", kv.Value)
}
func tryRangeIDKey(kv engine.MVCCKeyValue) (string, error) {
if kv.Key.Timestamp != hlc.ZeroTimestamp {
return "", fmt.Errorf("range ID keys shouldn't have timestamps: %s", kv.Key)
}
_, _, suffix, _, err := keys.DecodeRangeIDKey(kv.Key.Key)
if err != nil {
return "", err
}
// All range ID keys are stored inline on the metadata.
var meta enginepb.MVCCMetadata
if err := meta.Unmarshal(kv.Value); err != nil {
return "", err
}
value := roachpb.Value{RawBytes: meta.RawBytes}
// Values encoded as protobufs set msg and continue outside the
// switch. Other types are handled inside the switch and return.
var msg proto.Message
switch {
case bytes.Equal(suffix, keys.LocalLeaseAppliedIndexSuffix):
fallthrough
case bytes.Equal(suffix, keys.LocalRaftAppliedIndexSuffix):
i, err := value.GetInt()
if err != nil {
return "", err
}
return strconv.FormatInt(i, 10), nil
case bytes.Equal(suffix, keys.LocalRangeFrozenStatusSuffix):
b, err := value.GetBool()
if err != nil {
return "", err
}
return strconv.FormatBool(b), nil
case bytes.Equal(suffix, keys.LocalAbortCacheSuffix):
msg = &roachpb.AbortCacheEntry{}
case bytes.Equal(suffix, keys.LocalRangeLastGCSuffix):
msg = &hlc.Timestamp{}
case bytes.Equal(suffix, keys.LocalRaftTombstoneSuffix):
msg = &roachpb.RaftTombstone{}
case bytes.Equal(suffix, keys.LocalRaftTruncatedStateSuffix):
msg = &roachpb.RaftTruncatedState{}
case bytes.Equal(suffix, keys.LocalRangeLeaseSuffix):
msg = &roachpb.Lease{}
case bytes.Equal(suffix, keys.LocalRangeStatsSuffix):
msg = &enginepb.MVCCStats{}
case bytes.Equal(suffix, keys.LocalRaftHardStateSuffix):
msg = &raftpb.HardState{}
case bytes.Equal(suffix, keys.LocalRaftLastIndexSuffix):
i, err := value.GetInt()
if err != nil {
return "", err
}
return strconv.FormatInt(i, 10), nil
case bytes.Equal(suffix, keys.LocalRangeLastVerificationTimestampSuffixDeprecated):
msg = &hlc.Timestamp{}
case bytes.Equal(suffix, keys.LocalRangeLastReplicaGCTimestampSuffix):
msg = &hlc.Timestamp{}
default:
return "", fmt.Errorf("unknown raft id key %s", suffix)
}
if err := value.GetProto(msg); err != nil {
return "", err
}
return msg.String(), nil
}