cancel.go

/*

  Copyright 2017 Loopring Project Ltd (Loopring Foundation).

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

*/

package dao

import (
	"github.com/Loopring/relay/types"
	"github.com/ethereum/go-ethereum/common"
	"math/big"
)

type CancelEvent struct {
	ID              int    `gorm:"column:id;primary_key;"`
	Protocol        string `gorm:"column:contract_address;type:varchar(42)"`
	DelegateAddress string `gorm:"column:delegate_address;type:varchar(42)"`
	OrderHash       string `gorm:"column:order_hash;type:varchar(82)"`
	TxHash          string `gorm:"column:tx_hash;type:varchar(82)"`
	BlockNumber     int64  `gorm:"column:block_number"`
	CreateTime      int64  `gorm:"column:create_time"`
	AmountCancelled string `gorm:"column:amount_cancelled;type:varchar(40)"`
	LogIndex        int64  `gorm:"column:log_index"`
	Fork            bool   `gorm:"column:fork"`
}

// convert chainClient/orderCancelledEvent to dao/CancelEvent
func (e *CancelEvent) ConvertDown(src *types.OrderCancelledEvent) error {
	e.AmountCancelled = src.AmountCancelled.String()
	e.OrderHash = src.OrderHash.Hex()
	e.TxHash = src.TxHash.Hex()
	e.Protocol = src.Protocol.Hex()
	e.DelegateAddress = src.DelegateAddress.Hex()
	e.CreateTime = src.BlockTime
	e.BlockNumber = src.BlockNumber.Int64()
	e.LogIndex = src.TxLogIndex

	return nil
}

// convert dao/cancelEvent to types/cancelEvent
func (e *CancelEvent) ConvertUp(dst *types.OrderCancelledEvent) error {
	dst.AmountCancelled, _ = new(big.Int).SetString(e.AmountCancelled, 0)
	dst.OrderHash = common.HexToHash(e.OrderHash)
	dst.TxHash = common.HexToHash(e.TxHash)
	dst.Protocol = common.HexToAddress(e.Protocol)
	dst.DelegateAddress = common.HexToAddress(e.DelegateAddress)
	dst.BlockTime = e.CreateTime
	dst.BlockNumber = big.NewInt(e.BlockNumber)
	dst.TxLogIndex = e.LogIndex

	return nil
}

func (s *RdsServiceImpl) GetCancelEvent(txhash common.Hash) (CancelEvent, error) {
	var event CancelEvent
	err := s.db.Where("tx_hash=?", txhash.Hex()).Where("fork=?", false).First(&event).Error
	return event, err
}

func (s *RdsServiceImpl) GetCancelForkEvents(from, to int64) ([]CancelEvent, error) {
	var (
		list []CancelEvent
		err  error
	)

	err = s.db.Where("block_number > ? and block_number <= ?", from, to).
		Where("fork=?", false).
		Find(&list).Error

	return list, err
}

func (s *RdsServiceImpl) RollBackCancel(from, to int64) error {
	return s.db.Model(&CancelEvent{}).Where("block_number > ? and block_number <= ?", from, to).Update("fork", true).Error
}