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btcwallet.go
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btcwallet.go
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/*
* Copyright (c) 2014-2015 Conformal Systems LLC <info@conformal.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package main
import (
"fmt"
"io/ioutil"
"log"
"os"
"os/exec"
"strings"
"github.com/btcsuite/btcd/wire"
rpc "github.com/btcsuite/btcrpcclient"
)
// btcwalletArgs contains all the args and data required to launch a btcwallet
// instance and connect the rpc client to it
type btcwalletArgs struct {
Username string
Password string
RPCListen string
RPCConnect string
CAFile string
DataDir string
LogDir string
Profile string
DebugLevel string
Extra []string
Certificates []byte
prefix string
exe string
endpoint string
}
// newBtcwalletArgs returns a btcwalletArgs with all default values
func newBtcwalletArgs(port uint16, nodeArgs *btcdArgs) (*btcwalletArgs, error) {
a := &btcwalletArgs{
RPCListen: fmt.Sprintf("127.0.0.1:%d", port),
RPCConnect: "127.0.0.1:18556",
Username: "user",
Password: "pass",
Certificates: nodeArgs.certificates,
CAFile: CertFile,
prefix: fmt.Sprintf("actor-%d", port),
exe: "btcwallet",
endpoint: "ws",
}
if err := a.SetDefaults(); err != nil {
return nil, err
}
return a, nil
}
// SetDefaults sets the default values of args
// it creates tmp data and log directories and must
// be cleaned up by calling Cleanup
func (a *btcwalletArgs) SetDefaults() error {
datadir, err := ioutil.TempDir("", a.prefix+"-data")
if err != nil {
return err
}
a.DataDir = datadir
logdir, err := ioutil.TempDir("", a.prefix+"-logs")
if err != nil {
return err
}
a.LogDir = logdir
return nil
}
// String returns a printable name of this instance
func (a *btcwalletArgs) String() string {
return a.prefix
}
// Arguments returns an array of arguments that be used to launch the
// btcwallet instance
func (a *btcwalletArgs) Arguments() []string {
args := []string{}
// --simnet
args = append(args, fmt.Sprintf("--%s", strings.ToLower(wire.SimNet.String())))
if a.Username != "" {
// --username
args = append(args, fmt.Sprintf("--username=%s", a.Username))
}
if a.Password != "" {
// --password
args = append(args, fmt.Sprintf("--password=%s", a.Password))
}
if a.RPCListen != "" {
// --rpclisten
args = append(args, fmt.Sprintf("--rpclisten=%s", a.RPCListen))
}
if a.RPCConnect != "" {
// --rpcconnect
args = append(args, fmt.Sprintf("--rpcconnect=%s", a.RPCConnect))
}
// --rpccert
args = append(args, fmt.Sprintf("--rpccert=%s", CertFile))
// --rpckey
args = append(args, fmt.Sprintf("--rpckey=%s", KeyFile))
if a.CAFile != "" {
// --cafile
args = append(args, fmt.Sprintf("--cafile=%s", a.CAFile))
}
if a.DataDir != "" {
// --datadir
args = append(args, fmt.Sprintf("--datadir=%s", a.DataDir))
}
if a.LogDir != "" {
// --logdir
args = append(args, fmt.Sprintf("--logdir=%s", a.LogDir))
}
if a.Profile != "" {
// --profile
args = append(args, fmt.Sprintf("--profile=%s", a.Profile))
}
if a.DebugLevel != "" {
// --debuglevel
args = append(args, fmt.Sprintf("--debuglevel=%s", a.DebugLevel))
}
// --createtemp
args = append(args, "--createtemp")
args = append(args, a.Extra...)
return args
}
// Command returns Cmd of the btcwallet instance
func (a *btcwalletArgs) Command() *exec.Cmd {
return exec.Command(a.exe, a.Arguments()...)
}
// RPCConnConfig returns the rpc connection config that can be used
// to connect to the btcwallet instance that is launched on Start
func (a *btcwalletArgs) RPCConnConfig() rpc.ConnConfig {
return rpc.ConnConfig{
Host: a.RPCListen,
Endpoint: a.endpoint,
User: a.Username,
Pass: a.Password,
Certificates: a.Certificates,
DisableAutoReconnect: true,
}
}
// Cleanup removes the tmp data and log directories
func (a *btcwalletArgs) Cleanup() error {
dirs := []string{
a.LogDir,
a.DataDir,
}
var err error
for _, dir := range dirs {
if err = os.RemoveAll(dir); err != nil {
log.Printf("Cannot remove dir %s: %v", dir, err)
}
}
return err
}