fusenapi/server/upload/internal/logic/uploadfilebackendlogic.go

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package logic
import (
"fusenapi/utils/auth"
"fusenapi/utils/basic"
"fusenapi/utils/check"
"fusenapi/utils/format"
"time"
"context"
"fusenapi/server/upload/internal/svc"
"fusenapi/server/upload/internal/types"
"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/request"
"github.com/aws/aws-sdk-go/service/s3"
"github.com/zeromicro/go-zero/core/logx"
)
type UploadFileBackendLogic struct {
logx.Logger
ctx context.Context
svcCtx *svc.ServiceContext
}
func NewUploadFileBackendLogic(ctx context.Context, svcCtx *svc.ServiceContext) *UploadFileBackendLogic {
return &UploadFileBackendLogic{
Logger: logx.WithContext(ctx),
ctx: ctx,
svcCtx: svcCtx,
}
}
// UploadFileBackend 这个函数接收一个文件上传请求和用户信息,处理文件上传,并返回响应
func (l *UploadFileBackendLogic) UploadFileBackend(req *types.RequestUploadFileBackend, userinfo *auth.UserInfo) (resp *basic.Response) {
// 返回值必须调用Set重新返回, resp可以空指针调用 resp.SetStatus(basic.CodeOK, data)
// userinfo 传入值时, 一定不为null
// 检查用户是否是旁观者,旁观者没有文件上传权限
if userinfo.IsOnlooker() {
// 如果是,返回未授权的错误码
return resp.SetStatus(basic.CodeUnAuth)
}
// 定义用户ID和S3键名格式
var uid int64
var keytype format.TypeFormatS3KeyName
// 检查用户是否是游客
if userinfo.IsGuest() {
// 如果是使用游客ID和游客键名格式
uid = userinfo.GuestId
keytype = format.TypeS3KeyGuest
} else {
// 否则使用用户ID和用户键名格式
uid = userinfo.UserId
keytype = format.TypeS3KeyUser
}
// 设置AWS会话的区域
l.svcCtx.AwsSession.Config.Region = aws.String("us-west-1")
// 创建新的S3服务实例
svc := s3.New(l.svcCtx.AwsSession)
// 检查类别是否合法
if !check.CheckCategory(req.Category) {
// 如果不合法,返回类别错误的错误码
return resp.SetStatus(basic.CodeS3CategoryErr)
}
// 定义S3请求和当前时间
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var s3req *request.Request
now := time.Now()
// 格式化类别
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category := format.TypeCategory(req.Category)
// 格式化S3对象键名
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ObjectKey := aws.String(format.FormatS3KeyName(
keytype,
uid,
now,
l.svcCtx.Config.Env,
category,
req.File.Filename,
))
// 定义存储桶名称
var bucketName *string
// 根据类别选择存储桶
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switch category {
case format.TCategoryRenderMegre:
bucketName = basic.TempfileBucketName
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default:
bucketName = basic.StorageBucketName
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}
// 创建S3对象存储请求
s3req, _ = svc.PutObjectRequest(
&s3.PutObjectInput{
Bucket: bucketName,
Key: ObjectKey,
},
)
// 设置请求体为文件数据
s3req.SetBufferBody(req.File.Data)
// 发送请求
err := s3req.Send()
// 检查是否有错误
if err != nil {
// 如果有,打印错误并返回错误码
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logx.Error(err)
return resp.SetStatus(basic.CodeS3PutObjectRequestErr)
}
// 打印请求URL
logx.Info(s3req.HTTPRequest.URL.String())
// 返回成功的响应和上传URL
return resp.SetStatus(basic.CodeOK, map[string]interface{}{
"upload_url": s3req.HTTPRequest.URL.String(),
})
}