/
tx_wrapper.go
315 lines (244 loc) · 6.59 KB
/
tx_wrapper.go
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/*
* Copyright 2018 The OpenWallet Authors
* This file is part of the OpenWallet library.
*
* The OpenWallet library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The OpenWallet library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*/
package openw
import (
"fmt"
"github.com/asdine/storm/q"
"github.com/blocktree/openwallet/common"
"github.com/blocktree/openwallet/openwallet"
"github.com/shopspring/decimal"
)
// TransactionWrapper 交易包装器,扩展钱包交易单相关功能
type TransactionWrapper struct {
*WalletWrapper
}
func NewTransactionWrapper(args ...interface{}) *TransactionWrapper {
wrapper := NewWalletWrapper(args...)
txWrapper := TransactionWrapper{WalletWrapper: wrapper}
for _, arg := range args {
switch obj := arg.(type) {
case *WalletWrapper:
txWrapper.WalletWrapper = obj
}
}
return &txWrapper
}
//GetTxInputs 获取钱包的出账记录
func (wrapper *WalletWrapper) GetTxInputs(offset, limit int, cols ...interface{}) ([]*openwallet.TxInput, error) {
//打开数据库
db, err := wrapper.OpenStormDB()
if err != nil {
return nil, err
}
defer wrapper.CloseDB()
var txs []*openwallet.TxInput
query := make([]q.Matcher, 0)
if len(cols)%2 != 0 {
return nil, fmt.Errorf("condition param is not pair")
}
for i := 0; i < len(cols); i = i + 2 {
field := common.NewString(cols[i])
val := cols[i+1]
query = append(query, q.Eq(field.String(), val))
}
if limit > 0 {
err = db.Select(q.And(
query...,
)).Limit(limit).Skip(offset).Find(&txs)
} else {
err = db.Select(q.And(
query...,
)).Skip(offset).Find(&txs)
}
if err != nil {
return nil, fmt.Errorf("can not find txInputs")
}
return txs, nil
}
//GetTxOutputs 获取钱包的入账记录
func (wrapper *WalletWrapper) GetTxOutputs(offset, limit int, cols ...interface{}) ([]*openwallet.TxOutPut, error) {
//打开数据库
db, err := wrapper.OpenStormDB()
if err != nil {
return nil, err
}
defer wrapper.CloseDB()
var txs []*openwallet.TxOutPut
query := make([]q.Matcher, 0)
if len(cols)%2 != 0 {
return nil, fmt.Errorf("condition param is not pair")
}
for i := 0; i < len(cols); i = i + 2 {
field := common.NewString(cols[i])
val := cols[i+1]
query = append(query, q.Eq(field.String(), val))
}
if limit > 0 {
err = db.Select(q.And(
query...,
)).Limit(limit).Skip(offset).Find(&txs)
} else {
err = db.Select(q.And(
query...,
)).Skip(offset).Find(&txs)
}
if err != nil {
return nil, fmt.Errorf("can not find txoutputs")
}
return txs, nil
}
//GetTransactions 获取钱包的交易记录
func (wrapper *WalletWrapper) GetTransactions(offset, limit int, cols ...interface{}) ([]*openwallet.Transaction, error) {
//打开数据库
db, err := wrapper.OpenStormDB()
if err != nil {
return nil, err
}
defer wrapper.CloseDB()
var txs []*openwallet.Transaction
query := make([]q.Matcher, 0)
if len(cols)%2 != 0 {
return nil, fmt.Errorf("condition param is not pair")
}
for i := 0; i < len(cols); i = i + 2 {
field := common.NewString(cols[i])
val := cols[i+1]
query = append(query, q.Eq(field.String(), val))
}
if limit > 0 {
err = db.Select(q.And(
query...,
)).Limit(limit).Skip(offset).Find(&txs)
} else {
err = db.Select(q.And(
query...,
)).Skip(offset).Find(&txs)
}
if err != nil {
return nil, fmt.Errorf("can not find transactions")
}
return txs, nil
}
//SaveBlockExtractData 保存区块提取数据
func (wrapper *TransactionWrapper) SaveBlockExtractData(accountID string, data *openwallet.TxExtractData) error {
var (
accountSpent = decimal.Zero
accountReceived = decimal.Zero
)
//打开数据库
db, err := wrapper.OpenStormDB()
if err != nil {
return err
}
defer wrapper.CloseDB()
tx, err := db.Begin(true)
if err != nil {
return err
}
defer tx.Rollback()
//保存出账的记录
for _, input := range data.TxInputs {
a, err := wrapper.GetAddress(input.Address)
if err != nil {
continue
}
input.AccountID = a.AccountID
err = tx.Save(input)
if err != nil {
return fmt.Errorf("wallet save TxInputs failed, unexpected error: %v", err)
}
//统计该交易单下的各个资产账户的支出总数
if a.AccountID == accountID {
amount, _ := decimal.NewFromString(input.Amount)
accountSpent = accountSpent.Add(amount)
}
}
//保存入账的记录
for _, output := range data.TxOutputs {
a, err := wrapper.GetAddress(output.Address)
if err != nil {
continue
}
output.AccountID = a.AccountID
err = tx.Save(output)
if err != nil {
return fmt.Errorf("wallet save TxOutputs failed, unexpected error: %v", err)
}
//统计该交易单下的各个资产账户的收入总数
if a.AccountID == accountID {
amount, _ := decimal.NewFromString(output.Amount)
accountReceived = accountReceived.Add(amount)
}
}
//计算该交易单下的各个资产账户实际总收支,记录为账单数据
trx := data.Transaction
trx.AccountID = accountID
trx.Amount = accountReceived.Sub(accountSpent).StringFixed(trx.Decimal)
//保存账户相关的记录
err = tx.Save(trx)
if err != nil {
return fmt.Errorf("wallet save Transactions failed, unexpected error: %v", err)
}
err = tx.Commit()
if err != nil {
return fmt.Errorf("wallet save TxExtractData failed, unexpected error: %v", err)
}
return nil
}
//DeleteBlockDataByHeight 删除钱包中指定区块高度相关的交易记录
func (wrapper *TransactionWrapper) DeleteBlockDataByHeight(height uint64) error {
//打开数据库
db, err := wrapper.OpenStormDB()
if err != nil {
return err
}
defer wrapper.CloseDB()
tx, err := db.Begin(true)
if err != nil {
return err
}
defer tx.Rollback()
trxs, err := wrapper.GetTransactions(0, -1, "BlockHeight", height)
if err != nil {
return err
}
for _, obj := range trxs {
err = db.DeleteStruct(&obj)
if err != nil {
return err
}
}
inputs, err := wrapper.GetTxInputs(0, -1, "BlockHeight", height)
if err != nil {
return err
}
for _, obj := range inputs {
err = db.DeleteStruct(&obj)
if err != nil {
return err
}
}
outputs, err := wrapper.GetTxOutputs(0, -1, "BlockHeight", height)
if err != nil {
return err
}
for _, obj := range outputs {
err = db.DeleteStruct(&obj)
if err != nil {
return err
}
}
return tx.Commit()
}