f231113b90
pretty much everything is db based now. Still some concurrency issues when multiple block inv messages come in (which they do) where we used len(mBlockQueue) as a check for being synched up, which doesn't quite work. Find a better way to do that...
129 lines
3.4 KiB
Go
129 lines
3.4 KiB
Go
package uspv
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import (
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"fmt"
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"log"
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"github.com/btcsuite/btcd/chaincfg"
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"github.com/boltdb/bolt"
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"github.com/btcsuite/btcd/wire"
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"github.com/btcsuite/btcutil"
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"github.com/btcsuite/btcutil/bloom"
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"github.com/btcsuite/btcutil/hdkeychain"
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)
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type TxStore struct {
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OKTxids map[wire.ShaHash]int32 // known good txids and their heights
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Utxos []*Utxo // stacks on stacks
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Sum int64 // racks on racks
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Adrs []MyAdr // endeavouring to acquire capital
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LastIdx uint32 // should equal len(Adrs)
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StateDB *bolt.DB // place to write all this down
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// this is redundant with the SPVCon param... ugly and should be taken out
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Param *chaincfg.Params // network parameters (testnet3, testnetL)
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// From here, comes everything. It's a secret to everybody.
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rootPrivKey *hdkeychain.ExtendedKey
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}
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type Utxo struct { // cash money.
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Op wire.OutPoint // where
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// all the info needed to spend
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AtHeight int32 // block height where this tx was confirmed, 0 for unconf
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KeyIdx uint32 // index for private key needed to sign / spend
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Value int64 // higher is better
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// IsCoinbase bool // can't spend for a while
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}
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// Stxo is a utxo that has moved on.
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type Stxo struct {
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Utxo // when it used to be a utxo
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SpendHeight int32 // height at which it met its demise
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SpendTxid wire.ShaHash // the tx that consumed it
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}
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type MyAdr struct { // an address I have the private key for
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PkhAdr btcutil.Address
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KeyIdx uint32 // index for private key needed to sign / spend
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// ^^ this is kindof redundant because it'll just be their position
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// inside the Adrs slice, right? leave for now
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}
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func NewTxStore(rootkey *hdkeychain.ExtendedKey) TxStore {
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var txs TxStore
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txs.rootPrivKey = rootkey
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txs.OKTxids = make(map[wire.ShaHash]int32)
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return txs
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}
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// add txid of interest
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func (t *TxStore) AddTxid(txid *wire.ShaHash, height int32) error {
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if txid == nil {
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return fmt.Errorf("tried to add nil txid")
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}
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log.Printf("added %s to OKTxids at height %d\n", txid.String(), height)
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t.OKTxids[*txid] = height
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return nil
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}
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// ... or I'm gonna fade away
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func (t *TxStore) GimmeFilter() (*bloom.Filter, error) {
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if len(t.Adrs) == 0 {
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return nil, fmt.Errorf("no addresses to filter for")
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}
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// add addresses to look for incoming
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nutxo, err := t.NumUtxos()
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if err != nil {
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return nil, err
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}
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elem := uint32(len(t.Adrs)) + nutxo
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f := bloom.NewFilter(elem, 0, 0.000001, wire.BloomUpdateAll)
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for _, a := range t.Adrs {
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f.Add(a.PkhAdr.ScriptAddress())
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}
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// get all utxos to add outpoints to filter
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allUtxos, err := t.GetAllUtxos()
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if err != nil {
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return nil, err
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}
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for _, u := range allUtxos {
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f.AddOutPoint(&u.Op)
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}
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return f, nil
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}
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// need this because before I was comparing pointers maybe?
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// so they were the same outpoint but stored in 2 places so false negative?
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func OutPointsEqual(a, b wire.OutPoint) bool {
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if !a.Hash.IsEqual(&b.Hash) {
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return false
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}
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return a.Index == b.Index
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}
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// TxToString prints out some info about a transaction. for testing / debugging
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func TxToString(tx *wire.MsgTx) string {
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str := "\t\t\t - Tx - \n"
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for i, in := range tx.TxIn {
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str += fmt.Sprintf("Input %d: %s\n", i, in.PreviousOutPoint.String())
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str += fmt.Sprintf("SigScript for input %d: %x\n", i, in.SignatureScript)
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}
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for i, out := range tx.TxOut {
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if out != nil {
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str += fmt.Sprintf("\toutput %d script: %x amt: %d\n",
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i, out.PkScript, out.Value)
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} else {
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str += fmt.Sprintf("output %d nil (WARNING)\n", i)
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}
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}
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return str
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}
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