reorganize lots of files, add rebroadcast
move methods to new files to keep things a bit organized. add rebroadcast of unconfirmed txs after sync mutex on OKtxid map deal with doublespends next
This commit is contained in:
Tadge Dryja
parent
9eccb0638a
commit
25d90f5345
2
shell.go
2
shell.go
@ -302,7 +302,7 @@ func SendCoins(s uspv.SPVCon, adr btcutil.Address, sendAmt int64) error {
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// send it out on the wire. hope it gets there.
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// we should deal with rejects. Don't yet.
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err = s.PushTx(tx)
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err = s.NewOutgoingTx(tx)
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if err != nil {
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return err
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}
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314
uspv/eight333.go
314
uspv/eight333.go
@ -1,17 +1,13 @@
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package uspv
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"log"
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"net"
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"os"
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"sync"
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"github.com/btcsuite/btcd/chaincfg"
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"github.com/btcsuite/btcd/wire"
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"github.com/btcsuite/btcutil/bloom"
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)
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const (
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@ -53,172 +49,6 @@ type SPVCon struct {
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inWaitState chan bool
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}
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func OpenSPV(remoteNode string, hfn, dbfn string,
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inTs *TxStore, p *chaincfg.Params) (SPVCon, error) {
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// create new SPVCon
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var s SPVCon
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// I should really merge SPVCon and TxStore, they're basically the same
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inTs.Param = p
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s.TS = inTs // copy pointer of txstore into spvcon
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// open header file
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err := s.openHeaderFile(hfn)
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if err != nil {
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return s, err
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}
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// open TCP connection
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s.con, err = net.Dial("tcp", remoteNode)
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if err != nil {
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return s, err
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}
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// assign version bits for local node
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s.localVersion = VERSION
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// transaction store for this SPV connection
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err = inTs.OpenDB(dbfn)
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if err != nil {
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return s, err
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}
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myMsgVer, err := wire.NewMsgVersionFromConn(s.con, 0, 0)
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if err != nil {
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return s, err
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}
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err = myMsgVer.AddUserAgent("test", "zero")
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if err != nil {
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return s, err
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}
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// must set this to enable SPV stuff
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myMsgVer.AddService(wire.SFNodeBloom)
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// this actually sends
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n, err := wire.WriteMessageN(s.con, myMsgVer, s.localVersion, s.TS.Param.Net)
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if err != nil {
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return s, err
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}
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s.WBytes += uint64(n)
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log.Printf("wrote %d byte version message to %s\n",
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n, s.con.RemoteAddr().String())
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n, m, b, err := wire.ReadMessageN(s.con, s.localVersion, s.TS.Param.Net)
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if err != nil {
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return s, err
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}
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s.RBytes += uint64(n)
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log.Printf("got %d byte response %x\n command: %s\n", n, b, m.Command())
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mv, ok := m.(*wire.MsgVersion)
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if ok {
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log.Printf("connected to %s", mv.UserAgent)
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}
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log.Printf("remote reports version %x (dec %d)\n",
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mv.ProtocolVersion, mv.ProtocolVersion)
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// set remote height
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s.remoteHeight = mv.LastBlock
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mva := wire.NewMsgVerAck()
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n, err = wire.WriteMessageN(s.con, mva, s.localVersion, s.TS.Param.Net)
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if err != nil {
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return s, err
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}
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s.WBytes += uint64(n)
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s.inMsgQueue = make(chan wire.Message)
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go s.incomingMessageHandler()
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s.outMsgQueue = make(chan wire.Message)
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go s.outgoingMessageHandler()
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s.mBlockQueue = make(chan HashAndHeight, 32) // queue depth 32 is a thing
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s.fPositives = make(chan int32, 4000) // a block full, approx
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s.inWaitState = make(chan bool, 1)
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go s.fPositiveHandler()
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return s, nil
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}
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func (s *SPVCon) openHeaderFile(hfn string) error {
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_, err := os.Stat(hfn)
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if err != nil {
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if os.IsNotExist(err) {
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var b bytes.Buffer
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err = s.TS.Param.GenesisBlock.Header.Serialize(&b)
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if err != nil {
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return err
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}
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err = ioutil.WriteFile(hfn, b.Bytes(), 0600)
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if err != nil {
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return err
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}
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log.Printf("created hardcoded genesis header at %s\n",
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hfn)
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}
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}
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s.headerFile, err = os.OpenFile(hfn, os.O_RDWR, 0600)
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if err != nil {
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return err
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}
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log.Printf("opened header file %s\n", s.headerFile.Name())
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return nil
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}
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func (s *SPVCon) PongBack(nonce uint64) {
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mpong := wire.NewMsgPong(nonce)
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s.outMsgQueue <- mpong
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return
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}
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func (s *SPVCon) SendFilter(f *bloom.Filter) {
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s.outMsgQueue <- f.MsgFilterLoad()
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return
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}
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// HeightFromHeader gives you the block height given a 80 byte block header
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// seems like looking for the merkle root is the best way to do this
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func (s *SPVCon) HeightFromHeader(query wire.BlockHeader) (uint32, error) {
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// start from the most recent and work back in time; even though that's
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// kind of annoying it's probably a lot faster since things tend to have
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// happened recently.
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// seek to last header
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s.headerMutex.Lock()
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defer s.headerMutex.Unlock()
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lastPos, err := s.headerFile.Seek(-80, os.SEEK_END)
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if err != nil {
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return 0, err
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}
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height := lastPos / 80
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var current wire.BlockHeader
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for height > 0 {
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// grab header from disk
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err = current.Deserialize(s.headerFile)
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if err != nil {
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return 0, err
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}
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// check if merkle roots match
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if current.MerkleRoot.IsEqual(&query.MerkleRoot) {
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// if they do, great, return height
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return uint32(height), nil
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}
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// skip back one header (2 because we just read one)
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_, err = s.headerFile.Seek(-160, os.SEEK_CUR)
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if err != nil {
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return 0, err
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}
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// decrement height
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height--
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}
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// finished for loop without finding match
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return 0, fmt.Errorf("Header not found on disk")
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}
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// AskForTx requests a tx we heard about from an inv message.
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// It's one at a time but should be fast enough.
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// I don't like this function because SPV shouldn't even ask...
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@ -229,49 +59,34 @@ func (s *SPVCon) AskForTx(txid wire.ShaHash) {
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s.outMsgQueue <- gdata
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}
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func (s *SPVCon) AskForHeaders() error {
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var hdr wire.BlockHeader
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ghdr := wire.NewMsgGetHeaders()
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ghdr.ProtocolVersion = s.localVersion
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// HashAndHeight is needed instead of just height in case a fullnode
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// responds abnormally (?) by sending out of order merkleblocks.
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// we cache a merkleroot:height pair in the queue so we don't have to
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// look them up from the disk.
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// Also used when inv messages indicate blocks so we can add the header
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// and parse the txs in one request instead of requesting headers first.
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type HashAndHeight struct {
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blockhash wire.ShaHash
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height int32
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final bool // indicates this is the last merkleblock requested
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}
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s.headerMutex.Lock() // start header file ops
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info, err := s.headerFile.Stat()
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// NewRootAndHeight saves like 2 lines.
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func NewRootAndHeight(b wire.ShaHash, h int32) (hah HashAndHeight) {
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hah.blockhash = b
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hah.height = h
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return
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}
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func (s *SPVCon) RemoveHeaders(r int32) error {
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endPos, err := s.headerFile.Seek(0, os.SEEK_END)
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if err != nil {
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return err
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}
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headerFileSize := info.Size()
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if headerFileSize == 0 || headerFileSize%80 != 0 { // header file broken
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return fmt.Errorf("Header file not a multiple of 80 bytes")
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}
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// seek to 80 bytes from end of file
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ns, err := s.headerFile.Seek(-80, os.SEEK_END)
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err = s.headerFile.Truncate(endPos - int64(r*80))
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if err != nil {
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log.Printf("can't seek\n")
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return err
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return fmt.Errorf("couldn't truncate header file")
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}
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log.Printf("suk to offset %d (should be near the end\n", ns)
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// get header from last 80 bytes of file
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err = hdr.Deserialize(s.headerFile)
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if err != nil {
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log.Printf("can't Deserialize")
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return err
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}
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s.headerMutex.Unlock() // done with header file
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cHash := hdr.BlockSha()
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err = ghdr.AddBlockLocatorHash(&cHash)
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if err != nil {
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return err
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}
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fmt.Printf("get headers message has %d header hashes, first one is %s\n",
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len(ghdr.BlockLocatorHashes), ghdr.BlockLocatorHashes[0].String())
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s.outMsgQueue <- ghdr
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return nil
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}
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@ -301,7 +116,9 @@ func (s *SPVCon) IngestMerkleBlock(m *wire.MsgMerkleBlock) error {
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return fmt.Errorf("Txid store error: %s\n", err.Error())
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}
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}
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// write to db that we've sync'd to the height indicated in the
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// merkle block. This isn't QUITE true since we haven't actually gotten
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// the txs yet but if there are problems with the txs we should backtrack.
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err = s.TS.SetDBSyncHeight(hah.height)
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if err != nil {
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return err
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@ -406,59 +223,49 @@ func (s *SPVCon) IngestHeaders(m *wire.MsgHeaders) (bool, error) {
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return true, nil
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}
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// HashAndHeight is needed instead of just height in case a fullnode
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// responds abnormally (?) by sending out of order merkleblocks.
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// we cache a merkleroot:height pair in the queue so we don't have to
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// look them up from the disk.
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// Also used when inv messages indicate blocks so we can add the header
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// and parse the txs in one request instead of requesting headers first.
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type HashAndHeight struct {
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blockhash wire.ShaHash
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height int32
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final bool // indicates this is the last merkleblock requested
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}
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func (s *SPVCon) AskForHeaders() error {
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var hdr wire.BlockHeader
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ghdr := wire.NewMsgGetHeaders()
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ghdr.ProtocolVersion = s.localVersion
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// NewRootAndHeight saves like 2 lines.
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func NewRootAndHeight(b wire.ShaHash, h int32) (hah HashAndHeight) {
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hah.blockhash = b
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hah.height = h
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return
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}
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func (s *SPVCon) PushTx(tx *wire.MsgTx) error {
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txid := tx.TxSha()
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err := s.TS.AddTxid(&txid, 0)
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s.headerMutex.Lock() // start header file ops
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info, err := s.headerFile.Stat()
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if err != nil {
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return err
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}
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_, err = s.TS.Ingest(tx) // our own tx so don't need to track relevance
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headerFileSize := info.Size()
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if headerFileSize == 0 || headerFileSize%80 != 0 { // header file broken
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return fmt.Errorf("Header file not a multiple of 80 bytes")
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}
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// seek to 80 bytes from end of file
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ns, err := s.headerFile.Seek(-80, os.SEEK_END)
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if err != nil {
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log.Printf("can't seek\n")
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return err
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}
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log.Printf("suk to offset %d (should be near the end\n", ns)
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// get header from last 80 bytes of file
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err = hdr.Deserialize(s.headerFile)
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if err != nil {
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log.Printf("can't Deserialize")
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return err
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}
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s.headerMutex.Unlock() // done with header file
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cHash := hdr.BlockSha()
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err = ghdr.AddBlockLocatorHash(&cHash)
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if err != nil {
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return err
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}
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s.outMsgQueue <- tx
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return nil
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}
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func (s *SPVCon) GetNextHeaderHeight() (int32, error) {
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s.headerMutex.Lock()
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defer s.headerMutex.Unlock()
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info, err := s.headerFile.Stat() // get
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if err != nil {
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return 0, err // crash if header file disappears
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}
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nextHeight := int32(info.Size() / 80)
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return nextHeight, nil
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}
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fmt.Printf("get headers message has %d header hashes, first one is %s\n",
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len(ghdr.BlockLocatorHashes), ghdr.BlockLocatorHashes[0].String())
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s.outMsgQueue <- ghdr
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func (s *SPVCon) RemoveHeaders(r int32) error {
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endPos, err := s.headerFile.Seek(0, os.SEEK_END)
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if err != nil {
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return err
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}
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err = s.headerFile.Truncate(endPos - int64(r*80))
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if err != nil {
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return fmt.Errorf("couldn't truncate header file")
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}
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return nil
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}
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@ -487,6 +294,8 @@ func (s *SPVCon) AskForMerkBlocks() error {
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// nothing to ask for; set wait state and return
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fmt.Printf("no merkle blocks to request, entering wait state\n")
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s.inWaitState <- true
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// also advertise any unconfirmed txs here
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s.Rebroadcast()
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return nil
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}
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@ -535,6 +344,5 @@ func (s *SPVCon) AskForMerkBlocks() error {
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s.mBlockQueue <- hah // push height and mroot of requested block on queue
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dbTip++
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}
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return nil
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}
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117
uspv/init.go
Normal file
117
uspv/init.go
Normal file
@ -0,0 +1,117 @@
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package uspv
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import (
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"bytes"
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"io/ioutil"
|
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"log"
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"net"
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"os"
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"github.com/btcsuite/btcd/chaincfg"
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"github.com/btcsuite/btcd/wire"
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)
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// OpenPV starts a
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func OpenSPV(remoteNode string, hfn, dbfn string,
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inTs *TxStore, p *chaincfg.Params) (SPVCon, error) {
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// create new SPVCon
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var s SPVCon
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// I should really merge SPVCon and TxStore, they're basically the same
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inTs.Param = p
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s.TS = inTs // copy pointer of txstore into spvcon
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// open header file
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err := s.openHeaderFile(hfn)
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if err != nil {
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return s, err
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}
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// open TCP connection
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s.con, err = net.Dial("tcp", remoteNode)
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if err != nil {
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return s, err
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}
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// assign version bits for local node
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s.localVersion = VERSION
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// transaction store for this SPV connection
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err = inTs.OpenDB(dbfn)
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if err != nil {
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return s, err
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}
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myMsgVer, err := wire.NewMsgVersionFromConn(s.con, 0, 0)
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if err != nil {
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return s, err
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}
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err = myMsgVer.AddUserAgent("test", "zero")
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if err != nil {
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return s, err
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}
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// must set this to enable SPV stuff
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myMsgVer.AddService(wire.SFNodeBloom)
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// this actually sends
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n, err := wire.WriteMessageN(s.con, myMsgVer, s.localVersion, s.TS.Param.Net)
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if err != nil {
|
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return s, err
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}
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s.WBytes += uint64(n)
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log.Printf("wrote %d byte version message to %s\n",
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n, s.con.RemoteAddr().String())
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n, m, b, err := wire.ReadMessageN(s.con, s.localVersion, s.TS.Param.Net)
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if err != nil {
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return s, err
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}
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s.RBytes += uint64(n)
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log.Printf("got %d byte response %x\n command: %s\n", n, b, m.Command())
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mv, ok := m.(*wire.MsgVersion)
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if ok {
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log.Printf("connected to %s", mv.UserAgent)
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}
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log.Printf("remote reports version %x (dec %d)\n",
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mv.ProtocolVersion, mv.ProtocolVersion)
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|
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// set remote height
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s.remoteHeight = mv.LastBlock
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mva := wire.NewMsgVerAck()
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n, err = wire.WriteMessageN(s.con, mva, s.localVersion, s.TS.Param.Net)
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if err != nil {
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return s, err
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}
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s.WBytes += uint64(n)
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s.inMsgQueue = make(chan wire.Message)
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go s.incomingMessageHandler()
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s.outMsgQueue = make(chan wire.Message)
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go s.outgoingMessageHandler()
|
||||
s.mBlockQueue = make(chan HashAndHeight, 32) // queue depth 32 is a thing
|
||||
s.fPositives = make(chan int32, 4000) // a block full, approx
|
||||
s.inWaitState = make(chan bool, 1)
|
||||
go s.fPositiveHandler()
|
||||
|
||||
return s, nil
|
||||
}
|
||||
|
||||
func (s *SPVCon) openHeaderFile(hfn string) error {
|
||||
_, err := os.Stat(hfn)
|
||||
if err != nil {
|
||||
if os.IsNotExist(err) {
|
||||
var b bytes.Buffer
|
||||
err = s.TS.Param.GenesisBlock.Header.Serialize(&b)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
err = ioutil.WriteFile(hfn, b.Bytes(), 0600)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
log.Printf("created hardcoded genesis header at %s\n",
|
||||
hfn)
|
||||
}
|
||||
}
|
||||
s.headerFile, err = os.OpenFile(hfn, os.O_RDWR, 0600)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
log.Printf("opened header file %s\n", s.headerFile.Name())
|
||||
return nil
|
||||
}
|
||||
@ -50,7 +50,8 @@ func (s *SPVCon) incomingMessageHandler() {
|
||||
for i, thing := range m.InvList {
|
||||
log.Printf("\t$d) %s: %s", i, thing.Type, thing.Hash)
|
||||
}
|
||||
|
||||
case *wire.MsgGetData:
|
||||
s.GetDataHandler(m)
|
||||
default:
|
||||
log.Printf("Got unknown message type %s\n", m.Command())
|
||||
}
|
||||
@ -114,7 +115,6 @@ func (s *SPVCon) HeaderHandler(m *wire.MsgHeaders) {
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// no moar, done w/ headers, get merkleblocks
|
||||
err = s.AskForMerkBlocks()
|
||||
if err != nil {
|
||||
@ -123,19 +123,52 @@ func (s *SPVCon) HeaderHandler(m *wire.MsgHeaders) {
|
||||
}
|
||||
}
|
||||
|
||||
// TxHandler takes in transaction messages that come in from either a request
|
||||
// after an inv message or after a merkle block message.
|
||||
func (s *SPVCon) TxHandler(m *wire.MsgTx) {
|
||||
hits, err := s.TS.Ingest(m)
|
||||
s.TS.OKMutex.Lock()
|
||||
height, ok := s.TS.OKTxids[m.TxSha()]
|
||||
s.TS.OKMutex.Unlock()
|
||||
if !ok {
|
||||
log.Printf("Tx %s unknown, will not ingest\n")
|
||||
return
|
||||
}
|
||||
hits, err := s.TS.Ingest(m, height)
|
||||
if err != nil {
|
||||
log.Printf("Incoming Tx error: %s\n", err.Error())
|
||||
return
|
||||
}
|
||||
if hits == 0 {
|
||||
log.Printf("tx %s had no hits, filter false positive.",
|
||||
m.TxSha().String())
|
||||
s.fPositives <- 1 // add one false positive to chan
|
||||
} else {
|
||||
return
|
||||
}
|
||||
log.Printf("tx %s ingested and matches %d utxo/adrs.",
|
||||
m.TxSha().String(), hits)
|
||||
}
|
||||
|
||||
// GetDataHandler responds to requests for tx data, which happen after
|
||||
// advertising our txs via an inv message
|
||||
func (s *SPVCon) GetDataHandler(m *wire.MsgGetData) {
|
||||
log.Printf("got GetData. Contains:\n")
|
||||
var sent int32
|
||||
for i, thing := range m.InvList {
|
||||
log.Printf("\t%d)%s : %s",
|
||||
i, thing.Type.String(), thing.Hash.String())
|
||||
if thing.Type != wire.InvTypeTx { // refuse non-tx reqs
|
||||
log.Printf("We only respond to tx requests, ignoring")
|
||||
continue
|
||||
}
|
||||
tx, err := s.TS.GetTx(&thing.Hash)
|
||||
if err != nil {
|
||||
log.Printf("error getting tx %s: %s",
|
||||
thing.Hash.String(), err.Error())
|
||||
}
|
||||
s.outMsgQueue <- tx
|
||||
sent++
|
||||
}
|
||||
log.Printf("sent %d of %d requested items", sent, len(m.InvList))
|
||||
}
|
||||
|
||||
func (s *SPVCon) InvHandler(m *wire.MsgInv) {
|
||||
@ -143,8 +176,8 @@ func (s *SPVCon) InvHandler(m *wire.MsgInv) {
|
||||
for i, thing := range m.InvList {
|
||||
log.Printf("\t%d)%s : %s",
|
||||
i, thing.Type.String(), thing.Hash.String())
|
||||
if thing.Type == wire.InvTypeTx { // new tx, ingest
|
||||
s.TS.OKTxids[thing.Hash] = 0 // unconfirmed
|
||||
if thing.Type == wire.InvTypeTx { // new tx, OK it at 0 and request
|
||||
s.TS.AddTxid(&thing.Hash, 0) // unconfirmed
|
||||
s.AskForTx(thing.Hash)
|
||||
}
|
||||
if thing.Type == wire.InvTypeBlock { // new block what to do?
|
||||
|
||||
@ -3,13 +3,66 @@ package uspv
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"log"
|
||||
|
||||
"github.com/btcsuite/btcd/txscript"
|
||||
"github.com/btcsuite/btcd/wire"
|
||||
"github.com/btcsuite/btcutil/bloom"
|
||||
"github.com/btcsuite/btcutil/hdkeychain"
|
||||
"github.com/btcsuite/btcutil/txsort"
|
||||
)
|
||||
|
||||
func (s *SPVCon) PongBack(nonce uint64) {
|
||||
mpong := wire.NewMsgPong(nonce)
|
||||
|
||||
s.outMsgQueue <- mpong
|
||||
return
|
||||
}
|
||||
|
||||
func (s *SPVCon) SendFilter(f *bloom.Filter) {
|
||||
s.outMsgQueue <- f.MsgFilterLoad()
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// Rebroadcast sends an inv message of all the unconfirmed txs the db is
|
||||
// aware of. This is called after every sync. Only txids so hopefully not
|
||||
// too annoying for nodes.
|
||||
func (s *SPVCon) Rebroadcast() {
|
||||
// get all unconfirmed txs
|
||||
invMsg, err := s.TS.GetPendingInv()
|
||||
if err != nil {
|
||||
log.Printf("Rebroadcast error: %s", err.Error())
|
||||
}
|
||||
if len(invMsg.InvList) == 0 { // nothing to broadcast, so don't
|
||||
return
|
||||
}
|
||||
s.outMsgQueue <- invMsg
|
||||
return
|
||||
}
|
||||
|
||||
func (s *SPVCon) NewOutgoingTx(tx *wire.MsgTx) error {
|
||||
txid := tx.TxSha()
|
||||
// assign height of zero for txs we create
|
||||
err := s.TS.AddTxid(&txid, 0)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
_, err = s.TS.Ingest(tx, 0) // our own tx; don't keep track of false positives
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
// make an inv message instead of a tx message to be polite
|
||||
iv1 := wire.NewInvVect(wire.InvTypeTx, &txid)
|
||||
invMsg := wire.NewMsgInv()
|
||||
err = invMsg.AddInvVect(iv1)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
s.outMsgQueue <- invMsg
|
||||
return nil
|
||||
}
|
||||
|
||||
func (t *TxStore) SignThis(tx *wire.MsgTx) error {
|
||||
fmt.Printf("-= SignThis =-\n")
|
||||
|
||||
|
||||
@ -5,6 +5,7 @@ import (
|
||||
"encoding/binary"
|
||||
"fmt"
|
||||
"log"
|
||||
"sync"
|
||||
|
||||
"github.com/btcsuite/btcd/chaincfg"
|
||||
|
||||
@ -17,6 +18,7 @@ import (
|
||||
|
||||
type TxStore struct {
|
||||
OKTxids map[wire.ShaHash]int32 // known good txids and their heights
|
||||
OKMutex sync.Mutex
|
||||
|
||||
Adrs []MyAdr // endeavouring to acquire capital
|
||||
StateDB *bolt.DB // place to write all this down
|
||||
@ -67,7 +69,9 @@ func (t *TxStore) AddTxid(txid *wire.ShaHash, height int32) error {
|
||||
return fmt.Errorf("tried to add nil txid")
|
||||
}
|
||||
log.Printf("added %s to OKTxids at height %d\n", txid.String(), height)
|
||||
t.OKMutex.Lock()
|
||||
t.OKTxids[*txid] = height
|
||||
t.OKMutex.Unlock()
|
||||
return nil
|
||||
}
|
||||
|
||||
@ -76,17 +80,6 @@ func (t *TxStore) GimmeFilter() (*bloom.Filter, error) {
|
||||
if len(t.Adrs) == 0 {
|
||||
return nil, fmt.Errorf("no addresses to filter for")
|
||||
}
|
||||
// add addresses to look for incoming
|
||||
nutxo, err := t.NumUtxos()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
elem := uint32(len(t.Adrs)) + nutxo
|
||||
f := bloom.NewFilter(elem, 0, 0.000001, wire.BloomUpdateAll)
|
||||
for _, a := range t.Adrs {
|
||||
f.Add(a.PkhAdr.ScriptAddress())
|
||||
}
|
||||
|
||||
// get all utxos to add outpoints to filter
|
||||
allUtxos, err := t.GetAllUtxos()
|
||||
@ -94,6 +87,12 @@ func (t *TxStore) GimmeFilter() (*bloom.Filter, error) {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
elem := uint32(len(t.Adrs) + len(allUtxos))
|
||||
f := bloom.NewFilter(elem, 0, 0.000001, wire.BloomUpdateAll)
|
||||
for _, a := range t.Adrs {
|
||||
f.Add(a.PkhAdr.ScriptAddress())
|
||||
}
|
||||
|
||||
for _, u := range allUtxos {
|
||||
f.AddOutPoint(&u.Op)
|
||||
}
|
||||
|
||||
139
uspv/utxodb.go
139
uspv/utxodb.go
@ -121,7 +121,8 @@ func (ts *TxStore) NewAdr() (*btcutil.AddressPubKeyHash, error) {
|
||||
return newAdr, nil
|
||||
}
|
||||
|
||||
// SetBDay sets the birthday (birth height) of the db (really keyfile)
|
||||
// SetDBSyncHeight sets sync height of the db, indicated the latest block
|
||||
// of which it has ingested all the transactions.
|
||||
func (ts *TxStore) SetDBSyncHeight(n int32) error {
|
||||
var buf bytes.Buffer
|
||||
_ = binary.Write(&buf, binary.BigEndian, n)
|
||||
@ -159,24 +160,7 @@ func (ts *TxStore) GetDBSyncHeight() (int32, error) {
|
||||
return n, nil
|
||||
}
|
||||
|
||||
// NumUtxos returns the number of utxos in the DB.
|
||||
func (ts *TxStore) NumUtxos() (uint32, error) {
|
||||
var n uint32
|
||||
err := ts.StateDB.View(func(btx *bolt.Tx) error {
|
||||
duf := btx.Bucket(BKTUtxos)
|
||||
if duf == nil {
|
||||
return fmt.Errorf("no duffel bag")
|
||||
}
|
||||
stats := duf.Stats()
|
||||
n = uint32(stats.KeyN)
|
||||
return nil
|
||||
})
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
return n, nil
|
||||
}
|
||||
|
||||
// GetAllUtxos returns a slice of all utxos known to the db. empty slice is OK.
|
||||
func (ts *TxStore) GetAllUtxos() ([]*Utxo, error) {
|
||||
var utxos []*Utxo
|
||||
err := ts.StateDB.View(func(btx *bolt.Tx) error {
|
||||
@ -198,10 +182,8 @@ func (ts *TxStore) GetAllUtxos() ([]*Utxo, error) {
|
||||
}
|
||||
// and add it to ram
|
||||
utxos = append(utxos, &newU)
|
||||
|
||||
return nil
|
||||
})
|
||||
|
||||
return nil
|
||||
})
|
||||
if err != nil {
|
||||
@ -210,6 +192,106 @@ func (ts *TxStore) GetAllUtxos() ([]*Utxo, error) {
|
||||
return utxos, nil
|
||||
}
|
||||
|
||||
// GetAllStxos returns a slice of all stxos known to the db. empty slice is OK.
|
||||
func (ts *TxStore) GetAllStxos() ([]*Stxo, error) {
|
||||
// this is almost the same as GetAllUtxos but whatever, it'd be more
|
||||
// complicated to make one contain the other or something
|
||||
var stxos []*Stxo
|
||||
err := ts.StateDB.View(func(btx *bolt.Tx) error {
|
||||
old := btx.Bucket(BKTStxos)
|
||||
if old == nil {
|
||||
return fmt.Errorf("no old txos")
|
||||
}
|
||||
return old.ForEach(func(k, v []byte) error {
|
||||
// have to copy k and v here, otherwise append will crash it.
|
||||
// not quite sure why but append does weird stuff I guess.
|
||||
|
||||
// create a new stxo
|
||||
x := make([]byte, len(k)+len(v))
|
||||
copy(x, k)
|
||||
copy(x[len(k):], v)
|
||||
newS, err := StxoFromBytes(x)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
// and add it to ram
|
||||
stxos = append(stxos, &newS)
|
||||
return nil
|
||||
})
|
||||
return nil
|
||||
})
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return stxos, nil
|
||||
}
|
||||
|
||||
// GetTx takes a txid and returns the transaction. If we have it.
|
||||
func (ts *TxStore) GetTx(txid *wire.ShaHash) (*wire.MsgTx, error) {
|
||||
rtx := wire.NewMsgTx()
|
||||
|
||||
err := ts.StateDB.View(func(btx *bolt.Tx) error {
|
||||
txns := btx.Bucket(BKTTxns)
|
||||
if txns == nil {
|
||||
return fmt.Errorf("no transactions in db")
|
||||
}
|
||||
txbytes := txns.Get(txid.Bytes())
|
||||
if txbytes == nil {
|
||||
return fmt.Errorf("tx %x not in db", txid.String())
|
||||
}
|
||||
buf := bytes.NewBuffer(txbytes)
|
||||
return rtx.Deserialize(buf)
|
||||
})
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return rtx, nil
|
||||
}
|
||||
|
||||
// GetPendingInv returns an inv message containing all txs known to the
|
||||
// db which are at height 0 (not known to be confirmed).
|
||||
// This can be useful on startup or to rebroadcast unconfirmed txs.
|
||||
func (ts *TxStore) GetPendingInv() (*wire.MsgInv, error) {
|
||||
// use a map (really a set) do avoid dupes
|
||||
txidMap := make(map[wire.ShaHash]struct{})
|
||||
|
||||
utxos, err := ts.GetAllUtxos() // get utxos from db
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
stxos, err := ts.GetAllStxos() // get stxos from db
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// iterate through utxos, adding txids of anything with height 0
|
||||
for _, utxo := range utxos {
|
||||
if utxo.AtHeight == 0 {
|
||||
txidMap[utxo.Op.Hash] = struct{}{} // adds to map
|
||||
}
|
||||
}
|
||||
// do the same with stxos based on height at which spent
|
||||
for _, stxo := range stxos {
|
||||
if stxo.SpendHeight == 0 {
|
||||
txidMap[stxo.SpendTxid] = struct{}{}
|
||||
}
|
||||
}
|
||||
|
||||
invMsg := wire.NewMsgInv()
|
||||
for txid := range txidMap {
|
||||
item := wire.NewInvVect(wire.InvTypeTx, &txid)
|
||||
err = invMsg.AddInvVect(item)
|
||||
if err != nil {
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// return inv message with all txids (maybe none)
|
||||
return invMsg, nil
|
||||
}
|
||||
|
||||
// PopulateAdrs just puts a bunch of adrs in ram; it doesn't touch the DB
|
||||
func (ts *TxStore) PopulateAdrs(lastKey uint32) error {
|
||||
for k := uint32(0); k < lastKey; k++ {
|
||||
@ -227,27 +309,18 @@ func (ts *TxStore) PopulateAdrs(lastKey uint32) error {
|
||||
ma.PkhAdr = newAdr
|
||||
ma.KeyIdx = k
|
||||
ts.Adrs = append(ts.Adrs, ma)
|
||||
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Ingest puts a tx into the DB atomically. This can result in a
|
||||
// gain, a loss, or no result. Gain or loss in satoshis is returned.
|
||||
func (ts *TxStore) Ingest(tx *wire.MsgTx) (uint32, error) {
|
||||
func (ts *TxStore) Ingest(tx *wire.MsgTx, height int32) (uint32, error) {
|
||||
var hits uint32
|
||||
var err error
|
||||
var spentOPs [][]byte
|
||||
var nUtxoBytes [][]byte
|
||||
|
||||
// first check that we have a height and tx has been SPV OK'd
|
||||
inTxid := tx.TxSha()
|
||||
height, ok := ts.OKTxids[inTxid]
|
||||
if !ok {
|
||||
return hits, fmt.Errorf("Ingest error: tx %s not in OKTxids.",
|
||||
inTxid.String())
|
||||
}
|
||||
|
||||
// tx has been OK'd by SPV; check tx sanity
|
||||
utilTx := btcutil.NewTx(tx) // convert for validation
|
||||
// checks stuff like inputs >= ouputs
|
||||
@ -292,7 +365,6 @@ func (ts *TxStore) Ingest(tx *wire.MsgTx) (uint32, error) {
|
||||
hits++
|
||||
break // only one match
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
@ -302,6 +374,9 @@ func (ts *TxStore) Ingest(tx *wire.MsgTx) (uint32, error) {
|
||||
// sta := btx.Bucket(BKTState)
|
||||
old := btx.Bucket(BKTStxos)
|
||||
txns := btx.Bucket(BKTTxns)
|
||||
if duf == nil || old == nil || txns == nil {
|
||||
return fmt.Errorf("error: db not initialized")
|
||||
}
|
||||
|
||||
// first see if we lose utxos
|
||||
// iterate through duffel bag and look for matches
|
||||
|
||||
Loading…
Reference in New Issue
Block a user