/
delete.go
61 lines (52 loc) · 1.64 KB
/
delete.go
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package delete
import (
"crypto/ecdsa"
"fmt"
"github.com/bpfs/defs/core/config"
"github.com/bpfs/defs/core/network"
"github.com/bpfs/defs/core/sqlite"
"github.com/bpfs/defs/sqlites"
"github.com/bpfs/defs/wallet"
"github.com/bpfs/dep2p"
"github.com/bpfs/dep2p/pubsub"
)
// 文件删除请求
type FileDeleteRequestPayload struct {
FileID string // 文件的唯一标识
PubKeyHash []byte // 所有者的私钥
}
// Delete 删除文件
func Delete(
p2p *dep2p.DeP2P, // DeP2P网络主机
pubsub *pubsub.DeP2PPubSub, // DeP2P网络订阅
db *sqlites.SqliteDB, // sqlite数据库服务
fileID string, // 文件的唯一标识
ownerPriv *ecdsa.PrivateKey, // 所有者的私钥
) error {
// 查询删除的文件是否存在
if !sqlite.SelectOneFileID(db, fileID) {
return fmt.Errorf("文件不存在")
}
// 1、删除本地数据库
if err := sqlite.DeleteFileDatabase(db, fileID); err != nil {
return fmt.Errorf("删除文件失败")
}
// 2、删除本地切片数据库
if err := sqlite.DeleteSlicesDatabase(db, fileID); err != nil {
return fmt.Errorf("删除本地切片失败")
}
// 3、删除共享库
if err := sqlite.DeleteSharedDatabase(db, fileID); err != nil {
return fmt.Errorf("删除文件共享失败")
}
pubKeyHash, err := wallet.GetPubKeyHashFromPrivKey(ownerPriv) // 从ECDSA私钥中提取公钥哈希
if err != nil {
return err
}
requestDeletePayload := &FileDeleteRequestPayload{
FileID: fileID,
PubKeyHash: pubKeyHash,
}
// 向指定的全网节点发送文件删除请求订阅消息
return network.SendPubSub(p2p, pubsub, config.PubsubFileDeleteRequestTopic, "", "", requestDeletePayload)
}