block_chain.go
2.9 KB
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package service
import (
"fmt"
"github.com/linmadan/egglib-go/core/application"
"gitlab.fjmaimaimai.com/allied-creation/allied-creation-user/pkg/application/blockChain/command"
"gitlab.fjmaimaimai.com/allied-creation/allied-creation-user/pkg/application/factory"
"gitlab.fjmaimaimai.com/allied-creation/allied-creation-user/pkg/domain"
"gitlab.fjmaimaimai.com/allied-creation/allied-creation-user/pkg/infrastructure/blockchain"
"gitlab.fjmaimaimai.com/allied-creation/allied-creation-user/pkg/log"
"time"
)
// 区块链服务
type BlockChainService struct {
}
// 数据上链
func (blockChainService *BlockChainService) UpChain(upChainCommand *command.UpChainCommand) (interface{}, error) {
if err := upChainCommand.ValidateCommand(); err != nil {
return nil, application.ThrowError(application.ARG_ERROR, err.Error())
}
transactionContext, err := factory.CreateTransactionContext(nil)
if err != nil {
return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
}
if err := transactionContext.StartTransaction(); err != nil {
return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
}
defer func() {
transactionContext.RollbackTransaction()
}()
upChain := &domain.UpChain{
Source: upChainCommand.Source,
PrimaryId: upChainCommand.PrimaryId,
IssueId: upChainCommand.IssueId,
Data: upChainCommand.Data,
UpChainStatus: 2,
CreatedAt: time.Now(),
}
// 1. 查重
upChainRepository, _, _ := factory.FastPgUpChain(transactionContext, 0)
// 可溯源数据,可重复上传,可以追溯历史修改记录
if len(upChain.IssueId) == 0 {
if item, err := upChainRepository.FindOne(map[string]interface{}{"source": upChain.Source, "primaryId": upChain.PrimaryId}); err == nil && item != nil {
return nil, fmt.Errorf("duplicate message %v %v", upChain.Source, upChain.PrimaryId)
}
}
// 2.上链
bc := &blockchain.BSNBlockChain{
PublicPem: []byte(blockchain.PubPem),
Host: blockchain.Host,
PublicKey: blockchain.PubKey,
PrivatePem: blockchain.PriK,
EnableDebugLog: true,
}
options := blockchain.NewUpToChainOptions(upChain.Source, upChain.PrimaryId, upChain.Data).WithInnerPrimaryIssueId(upChain.IssueId)
upToChainResponse, e := bc.UpToChain(options)
if e != nil || upToChainResponse == nil {
upChain.UpFail()
if e != nil {
log.Logger.Error("up chain err:" + e.Error())
}
} else {
upChain.UpSuccess(string(*upToChainResponse))
}
// 3.保存记录
if upChain, err = upChainRepository.Save(upChain); err != nil {
return nil, err
}
if err := transactionContext.CommitTransaction(); err != nil {
return nil, application.ThrowError(application.TRANSACTION_ERROR, err.Error())
}
return upChain, nil
}
func NewBlockChainService(options map[string]interface{}) *BlockChainService {
newBlockChainService := &BlockChainService{}
return newBlockChainService
}