mirror of
https://github.com/nspcc-dev/neo-go.git
synced 2024-12-23 13:41:37 +00:00
rpc/client: drop neoscan support
It was used as getunspents substitute and it's not longer relevant for NEO 3.
This commit is contained in:
Roman Khimov
parent
31ef0c4339
commit
ed0a3e4af5
2 changed files with 32 additions and 125 deletions
|
|
@ -8,6 +8,7 @@ import (
|
|||
"net"
|
||||
"net/http"
|
||||
"net/url"
|
||||
"sort"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
|
|
@ -227,3 +228,34 @@ func (c *Client) Ping() error {
|
|||
_ = conn.Close()
|
||||
return nil
|
||||
}
|
||||
|
||||
// unspentsToInputs uses UnspentBalances to create a slice of inputs for a new
|
||||
// transcation containing the required amount of asset.
|
||||
func unspentsToInputs(utxos state.UnspentBalances, required util.Fixed8) ([]transaction.Input, util.Fixed8, error) {
|
||||
var (
|
||||
num, i uint16
|
||||
selected = util.Fixed8(0)
|
||||
)
|
||||
sort.Sort(utxos)
|
||||
|
||||
for _, us := range utxos {
|
||||
if selected >= required {
|
||||
break
|
||||
}
|
||||
selected += us.Value
|
||||
num++
|
||||
}
|
||||
if selected < required {
|
||||
return nil, util.Fixed8(0), errors.New("cannot compose inputs for transaction; check sender balance")
|
||||
}
|
||||
|
||||
inputs := make([]transaction.Input, 0, num)
|
||||
for i = 0; i < num; i++ {
|
||||
inputs = append(inputs, transaction.Input{
|
||||
PrevHash: utxos[i].Tx,
|
||||
PrevIndex: utxos[i].Index,
|
||||
})
|
||||
}
|
||||
|
||||
return inputs, selected, nil
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,125 +0,0 @@
|
|||
package client
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"net/http"
|
||||
"sort"
|
||||
|
||||
"github.com/nspcc-dev/neo-go/pkg/core/state"
|
||||
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
|
||||
"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
|
||||
"github.com/nspcc-dev/neo-go/pkg/util"
|
||||
errs "github.com/pkg/errors"
|
||||
)
|
||||
|
||||
/*
|
||||
Definition of types, helper functions and variables
|
||||
required for calculation of transaction inputs using
|
||||
NeoScan API.
|
||||
*/
|
||||
|
||||
type (
|
||||
// NeoScanServer stores NEOSCAN URL and API path.
|
||||
NeoScanServer struct {
|
||||
URL string // "protocol://host:port/"
|
||||
Path string // path to API endpoint without wallet address
|
||||
}
|
||||
|
||||
// Unspent stores Unspents per asset
|
||||
Unspent struct {
|
||||
Unspent state.UnspentBalances
|
||||
Asset string // "NEO" / "GAS"
|
||||
Amount util.Fixed8 // total unspent of this asset
|
||||
}
|
||||
|
||||
// NeoScanBalance is a struct of NeoScan response to 'get_balance' request
|
||||
NeoScanBalance struct {
|
||||
Balance []*Unspent
|
||||
Address string
|
||||
}
|
||||
)
|
||||
|
||||
// GetBalance performs a request to get balance for the address specified.
|
||||
func (s NeoScanServer) GetBalance(address string) ([]*Unspent, error) {
|
||||
var (
|
||||
err error
|
||||
req *http.Request
|
||||
res *http.Response
|
||||
balance NeoScanBalance
|
||||
client = http.Client{}
|
||||
balanceURL = s.URL + s.Path
|
||||
)
|
||||
|
||||
if req, err = http.NewRequest(http.MethodGet, balanceURL+address, nil); err != nil {
|
||||
return nil, errs.Wrap(err, "Failed to compose HTTP request")
|
||||
}
|
||||
|
||||
if res, err = client.Do(req); err != nil {
|
||||
return nil, errs.Wrap(err, "Failed to perform HTTP request")
|
||||
}
|
||||
|
||||
defer res.Body.Close()
|
||||
|
||||
if err = json.NewDecoder(res.Body).Decode(&balance); err != nil {
|
||||
return nil, errs.Wrap(err, "Failed to decode HTTP response")
|
||||
}
|
||||
return balance.Balance, nil
|
||||
}
|
||||
|
||||
func filterSpecificAsset(asset string, balance []*Unspent, assetBalance *Unspent) {
|
||||
for _, us := range balance {
|
||||
if us.Asset == asset {
|
||||
assetBalance.Unspent = us.Unspent
|
||||
assetBalance.Asset = us.Asset
|
||||
assetBalance.Amount = us.Amount
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// CalculateInputs creates input transactions for the specified amount of given asset belonging to specified address.
|
||||
func (s NeoScanServer) CalculateInputs(address string, assetIDUint util.Uint256, cost util.Fixed8) ([]transaction.Input, util.Fixed8, error) {
|
||||
var (
|
||||
err error
|
||||
us []*Unspent
|
||||
assetUnspent Unspent
|
||||
assetID = result.GlobalAssets[assetIDUint.StringLE()]
|
||||
)
|
||||
if us, err = s.GetBalance(address); err != nil {
|
||||
return nil, util.Fixed8(0), errs.Wrapf(err, "Cannot get balance for address %v", address)
|
||||
}
|
||||
filterSpecificAsset(assetID, us, &assetUnspent)
|
||||
return unspentsToInputs(assetUnspent.Unspent, cost)
|
||||
}
|
||||
|
||||
// unspentsToInputs uses UnspentBalances to create a slice of inputs for a new
|
||||
// transcation containing the required amount of asset.
|
||||
func unspentsToInputs(utxos state.UnspentBalances, required util.Fixed8) ([]transaction.Input, util.Fixed8, error) {
|
||||
var (
|
||||
num, i uint16
|
||||
selected = util.Fixed8(0)
|
||||
)
|
||||
sort.Sort(utxos)
|
||||
|
||||
for _, us := range utxos {
|
||||
if selected >= required {
|
||||
break
|
||||
}
|
||||
selected += us.Value
|
||||
num++
|
||||
}
|
||||
if selected < required {
|
||||
return nil, util.Fixed8(0), errors.New("cannot compose inputs for transaction; check sender balance")
|
||||
}
|
||||
|
||||
inputs := make([]transaction.Input, 0, num)
|
||||
for i = 0; i < num; i++ {
|
||||
inputs = append(inputs, transaction.Input{
|
||||
PrevHash: utxos[i].Tx,
|
||||
PrevIndex: utxos[i].Index,
|
||||
})
|
||||
}
|
||||
|
||||
return inputs, selected, nil
|
||||
}
|
||||
Loading…
Reference in a new issue