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block.go
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block.go
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/*
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 (
"errors"
"github.com/Loopring/relay/types"
"github.com/ethereum/go-ethereum/common"
"math/big"
)
type Block struct {
ID int `gorm:"column:id;primary_key"`
BlockNumber int64 `gorm:"column:block_number;type:bigint"`
BlockHash string `gorm:"column:block_hash;type:varchar(82)"`
ParentHash string `gorm:"column:parent_hash;type:varchar(82)"`
CreateTime int64 `gorm:"column:create_time"`
Fork bool `gorm:"column:fork;"`
}
// convert types/block to dao/block
func (b *Block) ConvertDown(src *types.Block) error {
b.BlockNumber = src.BlockNumber.Int64()
b.BlockHash = src.BlockHash.Hex()
b.ParentHash = src.ParentHash.Hex()
b.CreateTime = src.CreateTime
b.Fork = false
return nil
}
// convert dao/block to types/block
func (b *Block) ConvertUp(dst *types.Block) error {
dst.BlockNumber = big.NewInt(b.BlockNumber)
dst.BlockHash = common.HexToHash(b.BlockHash)
dst.ParentHash = common.HexToHash(b.ParentHash)
dst.CreateTime = b.CreateTime
return nil
}
func (s *RdsServiceImpl) FindBlockByHash(blockhash common.Hash) (*Block, error) {
var block Block
if types.IsZeroHash(blockhash) {
return nil, errors.New("block table findBlockByHash get an illegal hash")
}
err := s.db.Where("block_hash = ?", blockhash.Hex()).Where("fork = ?", false).First(&block).Error
return &block, err
}
func (s *RdsServiceImpl) FindLatestBlock() (*Block, error) {
var block Block
err := s.db.Order("create_time desc").Where("fork = ?", false).First(&block).Error
return &block, err
}
func (s *RdsServiceImpl) SetForkBlock(from, to int64) error {
return s.db.Model(&Block{}).Where("block_number > ? and block_number <= ?", from, to).Update("fork", true).Error
}
func (s *RdsServiceImpl) SaveBlock(latest *Block) error {
var current Block
if err := s.db.Where("block_hash=?", latest.BlockHash).Find(¤t).Error; err == nil {
return nil
}
return s.db.Create(latest).Error
}