340 lines
9.5 KiB
Go
340 lines
9.5 KiB
Go
/*
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* Copyright (c) 2014 The btcsuite developers
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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package votingpool_test
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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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"os"
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"path/filepath"
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"github.com/btcsuite/btcd/chaincfg"
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"github.com/btcsuite/btcd/txscript"
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"github.com/btcsuite/btcutil"
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"github.com/btcsuite/btcwallet/votingpool"
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"github.com/btcsuite/btcwallet/waddrmgr"
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"github.com/btcsuite/btcwallet/walletdb"
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_ "github.com/btcsuite/btcwallet/walletdb/bdb"
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"github.com/btcsuite/btcwallet/wtxmgr"
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)
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var (
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pubPassphrase = []byte("pubPassphrase")
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privPassphrase = []byte("privPassphrase")
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)
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func ExampleCreate() {
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// Create a new walletdb.DB. See the walletdb docs for instructions on how
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// to do that.
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db, dbTearDown, err := createWalletDB()
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if err != nil {
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fmt.Println(err)
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return
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}
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defer dbTearDown()
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// Create a new walletdb namespace for the address manager.
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mgrNamespace, err := db.Namespace([]byte("waddrmgr"))
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if err != nil {
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fmt.Println(err)
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return
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}
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// Create the address manager.
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seed := bytes.Repeat([]byte{0x2a, 0x64, 0xdf, 0x08}, 8)
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var fastScrypt = &waddrmgr.Options{ScryptN: 16, ScryptR: 8, ScryptP: 1}
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mgr, err := waddrmgr.Create(
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mgrNamespace, seed, pubPassphrase, privPassphrase, &chaincfg.MainNetParams, fastScrypt)
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if err != nil {
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fmt.Println(err)
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return
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}
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// Create a walletdb namespace for votingpools.
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vpNamespace, err := db.Namespace([]byte("votingpool"))
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if err != nil {
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fmt.Println(err)
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return
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}
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// Create a voting pool.
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_, err = votingpool.Create(vpNamespace, mgr, []byte{0x00})
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if err != nil {
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fmt.Println(err)
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return
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}
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// Output:
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//
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}
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// This example demonstrates how to create a voting pool with one
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// series and get a deposit address for that series.
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func Example_depositAddress() {
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// Create the address manager and votingpool DB namespace. See the example
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// for the Create() function for more info on how this is done.
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mgr, vpNamespace, tearDownFunc, err := exampleCreateMgrAndDBNamespace()
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if err != nil {
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fmt.Println(err)
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return
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}
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defer tearDownFunc()
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// Create the voting pool.
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pool, err := votingpool.Create(vpNamespace, mgr, []byte{0x00})
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if err != nil {
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fmt.Println(err)
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return
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}
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// Create a 2-of-3 series.
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seriesID := uint32(1)
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requiredSignatures := uint32(2)
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pubKeys := []string{
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"xpub661MyMwAqRbcFDDrR5jY7LqsRioFDwg3cLjc7tML3RRcfYyhXqqgCH5SqMSQdpQ1Xh8EtVwcfm8psD8zXKPcRaCVSY4GCqbb3aMEs27GitE",
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"xpub661MyMwAqRbcGsxyD8hTmJFtpmwoZhy4NBBVxzvFU8tDXD2ME49A6JjQCYgbpSUpHGP1q4S2S1Pxv2EqTjwfERS5pc9Q2yeLkPFzSgRpjs9",
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"xpub661MyMwAqRbcEbc4uYVXvQQpH9L3YuZLZ1gxCmj59yAhNy33vXxbXadmRpx5YZEupNSqWRrR7PqU6duS2FiVCGEiugBEa5zuEAjsyLJjKCh",
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}
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err = pool.CreateSeries(votingpool.CurrentVersion, seriesID, requiredSignatures, pubKeys)
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if err != nil {
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fmt.Println(err)
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return
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}
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// Create a deposit address.
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addr, err := pool.DepositScriptAddress(seriesID, votingpool.Branch(0), votingpool.Index(1))
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if err != nil {
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fmt.Println(err)
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return
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}
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fmt.Println("Generated deposit address:", addr.EncodeAddress())
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// Output:
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// Generated deposit address: 3QTzpc9d3tTbNLJLB7xwt87nWM38boAhAw
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}
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// This example demonstrates how to empower a series by loading the private
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// key for one of the series' public keys.
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func Example_empowerSeries() {
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// Create the address manager and votingpool DB namespace. See the example
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// for the Create() function for more info on how this is done.
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mgr, vpNamespace, tearDownFunc, err := exampleCreateMgrAndDBNamespace()
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if err != nil {
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fmt.Println(err)
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return
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}
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defer tearDownFunc()
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// Create a pool and a series. See the DepositAddress example for more info
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// on how this is done.
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pool, seriesID, err := exampleCreatePoolAndSeries(mgr, vpNamespace)
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if err != nil {
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fmt.Println(err)
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return
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}
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// Now empower the series with one of its private keys. Notice that in order
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// to do that we need to unlock the address manager.
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if err := mgr.Unlock(privPassphrase); err != nil {
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fmt.Println(err)
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return
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}
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defer mgr.Lock()
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privKey := "xprv9s21ZrQH143K2j9PK4CXkCu8sgxkpUxCF7p1KVwiV5tdnkeYzJXReUkxz5iB2FUzTXC1L15abCDG4RMxSYT5zhm67uvsnLYxuDhZfoFcB6a"
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err = pool.EmpowerSeries(seriesID, privKey)
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if err != nil {
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fmt.Println(err)
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return
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}
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// Output:
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//
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}
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// This example demonstrates how to use the Pool.StartWithdrawal method.
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func Example_startWithdrawal() {
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// Create the address manager and votingpool DB namespace. See the example
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// for the Create() function for more info on how this is done.
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mgr, vpNamespace, tearDownFunc, err := exampleCreateMgrAndDBNamespace()
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if err != nil {
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fmt.Println(err)
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return
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}
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defer tearDownFunc()
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// Create a pool and a series. See the DepositAddress example for more info
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// on how this is done.
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pool, seriesID, err := exampleCreatePoolAndSeries(mgr, vpNamespace)
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if err != nil {
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fmt.Println(err)
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return
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}
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// Unlock the manager
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if err := mgr.Unlock(privPassphrase); err != nil {
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fmt.Println(err)
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return
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}
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defer mgr.Lock()
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addr, _ := btcutil.DecodeAddress("1MirQ9bwyQcGVJPwKUgapu5ouK2E2Ey4gX", mgr.ChainParams())
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pkScript, _ := txscript.PayToAddrScript(addr)
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requests := []votingpool.OutputRequest{
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votingpool.OutputRequest{
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PkScript: pkScript,
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Address: addr,
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Amount: 1e6,
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Server: "server-id",
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Transaction: 123},
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}
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changeStart, err := pool.ChangeAddress(seriesID, votingpool.Index(0))
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if err != nil {
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fmt.Println(err)
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return
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}
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// This is only needed because we have not used any deposit addresses from
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// the series, and we cannot create a WithdrawalAddress for an unused
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// branch/idx pair.
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if err = pool.EnsureUsedAddr(seriesID, votingpool.Branch(1), votingpool.Index(0)); err != nil {
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fmt.Println(err)
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return
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}
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startAddr, err := pool.WithdrawalAddress(seriesID, votingpool.Branch(1), votingpool.Index(0))
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if err != nil {
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fmt.Println(err)
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return
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}
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lastSeriesID := seriesID
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dustThreshold := btcutil.Amount(1e4)
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currentBlock := int32(19432)
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roundID := uint32(0)
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txstore, tearDownFunc, err := exampleCreateTxStore()
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if err != nil {
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fmt.Println(err)
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return
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}
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_, err = pool.StartWithdrawal(
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roundID, requests, *startAddr, lastSeriesID, *changeStart, txstore, currentBlock,
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dustThreshold)
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if err != nil {
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fmt.Println(err)
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}
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// Output:
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//
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}
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func createWalletDB() (walletdb.DB, func(), error) {
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dir, err := ioutil.TempDir("", "votingpool_example")
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if err != nil {
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return nil, nil, err
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}
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db, err := walletdb.Create("bdb", filepath.Join(dir, "wallet.db"))
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if err != nil {
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return nil, nil, err
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}
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dbTearDown := func() {
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db.Close()
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os.RemoveAll(dir)
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}
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return db, dbTearDown, nil
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}
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func exampleCreateMgrAndDBNamespace() (*waddrmgr.Manager, walletdb.Namespace, func(), error) {
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db, dbTearDown, err := createWalletDB()
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if err != nil {
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return nil, nil, nil, err
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}
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// Create a new walletdb namespace for the address manager.
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mgrNamespace, err := db.Namespace([]byte("waddrmgr"))
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if err != nil {
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dbTearDown()
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return nil, nil, nil, err
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}
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// Create the address manager
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seed := bytes.Repeat([]byte{0x2a, 0x64, 0xdf, 0x08}, 8)
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var fastScrypt = &waddrmgr.Options{ScryptN: 16, ScryptR: 8, ScryptP: 1}
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mgr, err := waddrmgr.Create(
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mgrNamespace, seed, pubPassphrase, privPassphrase, &chaincfg.MainNetParams, fastScrypt)
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if err != nil {
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dbTearDown()
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return nil, nil, nil, err
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}
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tearDownFunc := func() {
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mgr.Close()
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dbTearDown()
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}
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// Create a walletdb namespace for votingpools.
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vpNamespace, err := db.Namespace([]byte("votingpool"))
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if err != nil {
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tearDownFunc()
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return nil, nil, nil, err
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}
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return mgr, vpNamespace, tearDownFunc, nil
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}
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func exampleCreatePoolAndSeries(mgr *waddrmgr.Manager, vpNamespace walletdb.Namespace) (
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*votingpool.Pool, uint32, error) {
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pool, err := votingpool.Create(vpNamespace, mgr, []byte{0x00})
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if err != nil {
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return nil, 0, err
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}
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// Create a 2-of-3 series.
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seriesID := uint32(1)
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requiredSignatures := uint32(2)
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pubKeys := []string{
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"xpub661MyMwAqRbcFDDrR5jY7LqsRioFDwg3cLjc7tML3RRcfYyhXqqgCH5SqMSQdpQ1Xh8EtVwcfm8psD8zXKPcRaCVSY4GCqbb3aMEs27GitE",
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"xpub661MyMwAqRbcGsxyD8hTmJFtpmwoZhy4NBBVxzvFU8tDXD2ME49A6JjQCYgbpSUpHGP1q4S2S1Pxv2EqTjwfERS5pc9Q2yeLkPFzSgRpjs9",
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"xpub661MyMwAqRbcEbc4uYVXvQQpH9L3YuZLZ1gxCmj59yAhNy33vXxbXadmRpx5YZEupNSqWRrR7PqU6duS2FiVCGEiugBEa5zuEAjsyLJjKCh",
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}
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err = pool.CreateSeries(votingpool.CurrentVersion, seriesID, requiredSignatures, pubKeys)
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if err != nil {
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return nil, 0, err
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}
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err = pool.ActivateSeries(seriesID)
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if err != nil {
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return nil, 0, err
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}
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return pool, seriesID, nil
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}
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func exampleCreateTxStore() (*wtxmgr.Store, func(), error) {
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dir, err := ioutil.TempDir("", "pool_test_txstore")
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if err != nil {
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return nil, nil, err
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}
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db, err := walletdb.Create("bdb", filepath.Join(dir, "txstore.db"))
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if err != nil {
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return nil, nil, err
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}
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wtxmgrNamespace, err := db.Namespace([]byte("testtxstore"))
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if err != nil {
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return nil, nil, err
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}
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s, err := wtxmgr.Create(wtxmgrNamespace)
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if err != nil {
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return nil, nil, err
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}
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return s, func() { os.RemoveAll(dir) }, nil
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}
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