4566704
33574d4ac2
- 六接口（init/chunk/merge/check/task/abort）+ 分片幂等 + 断点续传 + .part 原子改名 + 合并整文件 MD5 校验 + 秒传 - 零宿主耦合：Repository 接口注入存储、Envelope 注入响应封装、 OnMerged/OnInstantHit 回调衔接业务（仅依赖既有 gin/uuid） - 自 FileUpload 项目 restful/upload 抽出；maintain-service 云端文件为其首个宿主
120 lines
3.1 KiB
Go
120 lines
3.1 KiB
Go
package fileupload
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import (
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"errors"
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"net/http"
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"github.com/gin-gonic/gin"
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)
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// Mount 挂载分片上传路由到 r（宿主自行决定路由组，如 api.Group("/upload")）：
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//
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// POST /init 初始化（JSON：fileName/fileSize/fileMD5/mimeType/chunkSize/totalChunk）
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// POST /chunk 上传分片（multipart：uploadId/chunkIndex/chunk），幂等
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// POST /merge 合并分片（JSON：uploadId），幂等
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// GET /check?fileMD5= 秒传/续传检查
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// GET /task/:uploadId 任务详情与已确认分片
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// DELETE /task/:uploadId 取消任务并清理
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//
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// 身份（operator/tenant）由宿主在 handler 外层取好后经 identity 注入；
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// 响应统一走 Options.Envelope。
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type Identity func(c *gin.Context) (operator string, tenantID int64)
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type mountConfig struct {
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identity Identity
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}
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// MountOption 挂载选项。
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type MountOption func(*mountConfig)
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// WithIdentity 注入身份提取（从 JWT 中间件写入的 context 取 UserId/UserName 等）。
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func WithIdentity(fn Identity) MountOption {
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return func(m *mountConfig) { m.identity = fn }
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}
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// Mount 挂载路由。r 建议为 api.Group("/upload")。
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func Mount(r *gin.RouterGroup, opts Options, repo Repository, mos ...MountOption) error {
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if err := opts.validate(); err != nil {
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return err
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}
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if repo == nil {
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return errors.New("fileupload: Repository 必填")
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}
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mc := &mountConfig{}
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for _, mo := range mos {
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mo(mc)
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}
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svc := newService(opts, repo)
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r.POST("/init", func(c *gin.Context) {
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var req InitReq
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if err := c.ShouldBindJSON(&req); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"code": 1, "msg": "参数错误: " + err.Error()})
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return
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}
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operator, tenantID := mc.identity(c)
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resp, err := svc.init(&req, operator, tenantID)
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opts.Envelope(c, resp, err)
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})
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r.POST("/chunk", func(c *gin.Context) {
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form, err := c.MultipartForm()
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if err != nil {
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opts.Envelope(c, nil, errors.New("请使用 multipart/form-data 上传"))
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return
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}
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files := form.File["chunk"]
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if len(files) != 1 {
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opts.Envelope(c, nil, errors.New("缺少分片文件字段 chunk"))
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return
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}
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chunkIndex := atoiDefault(c.PostForm("chunkIndex"), -1)
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resp, err := svc.chunk(c.PostForm("uploadId"), chunkIndex, files[0])
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if err != nil {
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opts.Envelope(c, nil, err)
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return
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}
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opts.Envelope(c, resp, nil)
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})
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r.POST("/merge", func(c *gin.Context) {
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var req MergeReq
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if err := c.ShouldBindJSON(&req); err != nil {
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c.JSON(http.StatusBadRequest, gin.H{"code": 1, "msg": "参数错误: " + err.Error()})
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return
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}
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resp, err := svc.merge(req.UploadId)
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opts.Envelope(c, resp, err)
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})
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r.GET("/check", func(c *gin.Context) {
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resp, err := svc.check(c.Query("fileMD5"))
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opts.Envelope(c, resp, err)
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})
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r.GET("/task/:uploadId", func(c *gin.Context) {
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resp, err := svc.taskInfo(c.Param("uploadId"))
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opts.Envelope(c, resp, err)
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})
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r.DELETE("/task/:uploadId", func(c *gin.Context) {
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resp, err := svc.abort(c.Param("uploadId"))
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opts.Envelope(c, resp, err)
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})
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return nil
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}
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func atoiDefault(s string, def int) int {
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if s == "" {
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return def
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}
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n := 0
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for _, r := range s {
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if r < '0' || r > '9' {
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return def
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}
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n = n*10 + int(r-'0')
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}
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return n
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}
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