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helpers_misc.go
217 lines (190 loc) · 5.14 KB
/
helpers_misc.go
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package cmds
import (
"io"
"io/ioutil"
"os"
"path/filepath"
"syscall"
"time"
"github.com/spf13/cobra"
"github.com/transmutate-io/atomicswap/cryptos"
"github.com/transmutate-io/atomicswap/internal/cmdutil"
"github.com/transmutate-io/atomicswap/internal/flagutil"
"github.com/transmutate-io/atomicswap/internal/flagutil/exitcodes"
"github.com/transmutate-io/atomicswap/stages"
"github.com/transmutate-io/atomicswap/trade"
"gopkg.in/yaml.v2"
)
func dataDir(cmd *cobra.Command) string {
return filepath.Clean(flagutil.MustString(cmd.Root().PersistentFlags(), "data"))
}
func tradesDir(cmd *cobra.Command) string {
return filepath.Join(dataDir(cmd), "trades")
}
func tradePath(cmd *cobra.Command, name string) string {
return filepath.Join(tradesDir(cmd), name)
}
func createFile(p string) (*os.File, error) {
if err := os.MkdirAll(filepath.Dir(p), 0755); err != nil {
return nil, err
}
return os.Create(p)
}
func mustCreateFile(p string) *os.File {
r, err := createFile(p)
if err != nil {
cmdutil.ErrorExit(exitcodes.CantCreateFile, err)
}
return r
}
func parseCrypto(c string) (*cryptos.Crypto, error) {
if r, err := cryptos.ParseShort(c); err == nil {
return r, nil
}
return cryptos.Parse(c)
}
func mustParseCrypto(c string) *cryptos.Crypto {
r, err := parseCrypto(c)
if err != nil {
cmdutil.ErrorExit(exitcodes.UnknownCrypto, c)
}
return r
}
func mustParseDuration(d string) time.Duration {
r, err := time.ParseDuration(d)
if err != nil {
cmdutil.ErrorExit(exitcodes.InvalidDuration, d)
}
return r
}
func eachTrade(td string, f func(string, trade.Trade) error) error {
return filepath.Walk(td, func(path string, info os.FileInfo, err error) error {
if info == nil || info.IsDir() {
return nil
}
tf, err := os.Open(path)
if err != nil {
return err
}
defer tf.Close()
tr := &trade.OnChainTrade{}
if err = yaml.NewDecoder(tf).Decode(tr); err != nil {
return err
}
return f(filepath.ToSlash(cmdutil.TrimPath(path, td)), tr)
})
}
func eachProposal(td string, f func(string, trade.Trade) error) error {
return eachTrade(td, func(name string, tr trade.Trade) error {
if tr.Stager().Stage() != stages.SendProposal {
return nil
}
return f(name, tr)
})
}
func eachLockSet(td string, f func(string, trade.Trade) error) error {
return eachTrade(td, func(name string, tr trade.Trade) error {
if tr.Stager().Stage() != stages.SendProposalResponse {
return nil
}
return f(name, tr)
})
}
func openTradeFile(tp string) (trade.Trade, error) {
f, err := os.Open(tp)
if err != nil {
return nil, err
}
defer f.Close()
r := &trade.OnChainTrade{}
if err = yaml.NewDecoder(f).Decode(r); err != nil {
return nil, err
}
return r, nil
}
func mustOpenTrade(cmd *cobra.Command, name string) trade.Trade {
r, err := openTradeFile(tradePath(cmd, name))
if err != nil {
cmdutil.ErrorExit(exitcodes.CantOpenTrade, name, err)
}
return r
}
func saveTrade(tp string, tr trade.Trade) error {
f, err := createFile(tp)
if err != nil {
return err
}
defer f.Close()
if err = yaml.NewEncoder(f).Encode(tr); err != nil {
return err
}
return nil
}
func mustSaveTrade(cmd *cobra.Command, name string, tr trade.Trade) {
if err := saveTrade(tradePath(cmd, name), tr); err != nil {
cmdutil.ErrorExit(exitcodes.CantSaveTrade, err)
}
}
func openLockSet(r io.Reader, ownCrypto, traderCrypto *cryptos.Crypto) *trade.BuyProposalResponse {
b, err := ioutil.ReadAll(r)
if err != nil {
cmdutil.ErrorExit(exitcodes.CantOpenLockSet, err)
}
ls, err := trade.UnamrshalBuyProposalResponse(ownCrypto, traderCrypto, b)
if err != nil {
cmdutil.ErrorExit(exitcodes.CantOpenLockSet, err)
}
return ls
}
func watchDataDir(cmd *cobra.Command) string {
return filepath.Join(dataDir(cmd), "watch_data")
}
func watchDataPath(cmd *cobra.Command, name string) string {
return filepath.Join(watchDataDir(cmd), name)
}
func openWatchData(wdPath string) (*watchData, error) {
r := &watchData{
Own: &blockWatchData{Top: 0, Bottom: 0},
Trader: &blockWatchData{Top: 0, Bottom: 0},
}
f, err := os.Open(wdPath)
if err != nil {
if e, ok := err.(*os.PathError); ok && e.Err == syscall.ENOENT {
return r, nil
}
return nil, err
}
defer f.Close()
if err = yaml.NewDecoder(f).Decode(r); err != nil {
return nil, err
}
return r, nil
}
func mustOpenWatchData(cmd *cobra.Command, name string) *watchData {
r, err := openWatchData(watchDataPath(cmd, name))
if err != nil {
cmdutil.ErrorExit(exitcodes.CantOpenWatchData, err)
}
return r
}
func saveWatchData(wdPath string, wd *watchData) error {
f, err := createFile(wdPath)
if err != nil {
return err
}
defer f.Close()
return yaml.NewEncoder(f).Encode(wd)
}
func mustSaveWatchData(cmd *cobra.Command, name string, wd *watchData) {
if err := saveWatchData(watchDataPath(cmd, name), wd); err != nil {
cmdutil.ErrorExit(exitcodes.CantSaveWatchData, err)
}
}
func consoleConfigDir(cmd *cobra.Command) string { return filepath.Join(dataDir(cmd), "config") }
const DEFAULT_CONSOLE_CONFIG_NAME = "console_defaults.yaml"
func consoleConfigPath(cmd *cobra.Command, name string) string {
if name == "" {
name = DEFAULT_CONSOLE_CONFIG_NAME
}
return filepath.Join(consoleConfigDir(cmd), name)
}