forked from NYANDEV/forgejo
bd820aa9c5
To avoid duplicated load of the same data in an HTTP request, we can set
a context cache to do that. i.e. Some pages may load a user from a
database with the same id in different areas on the same page. But the
code is hidden in two different deep logic. How should we share the
user? As a result of this PR, now if both entry functions accept
`context.Context` as the first parameter and we just need to refactor
`GetUserByID` to reuse the user from the context cache. Then it will not
be loaded twice on an HTTP request.
But of course, sometimes we would like to reload an object from the
database, that's why `RemoveContextData` is also exposed.
The core context cache is here. It defines a new context
```go
type cacheContext struct {
ctx context.Context
data map[any]map[any]any
lock sync.RWMutex
}
var cacheContextKey = struct{}{}
func WithCacheContext(ctx context.Context) context.Context {
return context.WithValue(ctx, cacheContextKey, &cacheContext{
ctx: ctx,
data: make(map[any]map[any]any),
})
}
```
Then you can use the below 4 methods to read/write/del the data within
the same context.
```go
func GetContextData(ctx context.Context, tp, key any) any
func SetContextData(ctx context.Context, tp, key, value any)
func RemoveContextData(ctx context.Context, tp, key any)
func GetWithContextCache[T any](ctx context.Context, cacheGroupKey string, cacheTargetID any, f func() (T, error)) (T, error)
```
Then let's take a look at how `system.GetString` implement it.
```go
func GetSetting(ctx context.Context, key string) (string, error) {
return cache.GetWithContextCache(ctx, contextCacheKey, key, func() (string, error) {
return cache.GetString(genSettingCacheKey(key), func() (string, error) {
res, err := GetSettingNoCache(ctx, key)
if err != nil {
return "", err
}
return res.SettingValue, nil
})
})
}
```
First, it will check if context data include the setting object with the
key. If not, it will query from the global cache which may be memory or
a Redis cache. If not, it will get the object from the database. In the
end, if the object gets from the global cache or database, it will be
set into the context cache.
An object stored in the context cache will only be destroyed after the
context disappeared.
343 lines
9.2 KiB
Go
343 lines
9.2 KiB
Go
// Copyright 2018 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package repo
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import (
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"net/http"
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repo_model "code.gitea.io/gitea/models/repo"
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"code.gitea.io/gitea/modules/context"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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api "code.gitea.io/gitea/modules/structs"
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"code.gitea.io/gitea/modules/upload"
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"code.gitea.io/gitea/modules/web"
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"code.gitea.io/gitea/services/attachment"
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"code.gitea.io/gitea/services/convert"
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)
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// GetReleaseAttachment gets a single attachment of the release
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func GetReleaseAttachment(ctx *context.APIContext) {
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// swagger:operation GET /repos/{owner}/{repo}/releases/{id}/assets/{attachment_id} repository repoGetReleaseAttachment
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// ---
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// summary: Get a release attachment
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// produces:
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// - application/json
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// parameters:
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// - name: owner
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// in: path
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// description: owner of the repo
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// type: string
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// required: true
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// - name: repo
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// in: path
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// description: name of the repo
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// type: string
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// required: true
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// - name: id
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// in: path
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// description: id of the release
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// type: integer
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// format: int64
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// required: true
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// - name: attachment_id
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// in: path
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// description: id of the attachment to get
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// type: integer
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// format: int64
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// required: true
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// responses:
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// "200":
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// "$ref": "#/responses/Attachment"
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releaseID := ctx.ParamsInt64(":id")
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attachID := ctx.ParamsInt64(":asset")
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attach, err := repo_model.GetAttachmentByID(ctx, attachID)
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if err != nil {
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if repo_model.IsErrAttachmentNotExist(err) {
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ctx.NotFound()
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return
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}
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ctx.Error(http.StatusInternalServerError, "GetAttachmentByID", err)
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return
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}
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if attach.ReleaseID != releaseID {
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log.Info("User requested attachment is not in release, release_id %v, attachment_id: %v", releaseID, attachID)
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ctx.NotFound()
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return
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}
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// FIXME Should prove the existence of the given repo, but results in unnecessary database requests
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ctx.JSON(http.StatusOK, convert.ToAttachment(attach))
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}
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// ListReleaseAttachments lists all attachments of the release
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func ListReleaseAttachments(ctx *context.APIContext) {
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// swagger:operation GET /repos/{owner}/{repo}/releases/{id}/assets repository repoListReleaseAttachments
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// ---
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// summary: List release's attachments
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// produces:
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// - application/json
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// parameters:
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// - name: owner
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// in: path
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// description: owner of the repo
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// type: string
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// required: true
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// - name: repo
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// in: path
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// description: name of the repo
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// type: string
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// required: true
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// - name: id
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// in: path
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// description: id of the release
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// type: integer
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// format: int64
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// required: true
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// responses:
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// "200":
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// "$ref": "#/responses/AttachmentList"
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releaseID := ctx.ParamsInt64(":id")
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release, err := repo_model.GetReleaseByID(ctx, releaseID)
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if err != nil {
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if repo_model.IsErrReleaseNotExist(err) {
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ctx.NotFound()
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return
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}
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ctx.Error(http.StatusInternalServerError, "GetReleaseByID", err)
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return
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}
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if release.RepoID != ctx.Repo.Repository.ID {
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ctx.NotFound()
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return
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}
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if err := release.LoadAttributes(ctx); err != nil {
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ctx.Error(http.StatusInternalServerError, "LoadAttributes", err)
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return
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}
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ctx.JSON(http.StatusOK, convert.ToRelease(ctx, release).Attachments)
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}
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// CreateReleaseAttachment creates an attachment and saves the given file
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func CreateReleaseAttachment(ctx *context.APIContext) {
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// swagger:operation POST /repos/{owner}/{repo}/releases/{id}/assets repository repoCreateReleaseAttachment
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// ---
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// summary: Create a release attachment
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// produces:
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// - application/json
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// consumes:
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// - multipart/form-data
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// parameters:
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// - name: owner
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// in: path
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// description: owner of the repo
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// type: string
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// required: true
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// - name: repo
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// in: path
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// description: name of the repo
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// type: string
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// required: true
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// - name: id
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// in: path
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// description: id of the release
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// type: integer
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// format: int64
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// required: true
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// - name: name
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// in: query
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// description: name of the attachment
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// type: string
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// required: false
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// - name: attachment
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// in: formData
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// description: attachment to upload
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// type: file
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// required: true
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// responses:
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// "201":
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// "$ref": "#/responses/Attachment"
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// "400":
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// "$ref": "#/responses/error"
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// Check if attachments are enabled
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if !setting.Attachment.Enabled {
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ctx.NotFound("Attachment is not enabled")
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return
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}
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// Check if release exists an load release
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releaseID := ctx.ParamsInt64(":id")
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release, err := repo_model.GetReleaseByID(ctx, releaseID)
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if err != nil {
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if repo_model.IsErrReleaseNotExist(err) {
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ctx.NotFound()
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return
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}
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ctx.Error(http.StatusInternalServerError, "GetReleaseByID", err)
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return
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}
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// Get uploaded file from request
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file, header, err := ctx.Req.FormFile("attachment")
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if err != nil {
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ctx.Error(http.StatusInternalServerError, "GetFile", err)
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return
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}
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defer file.Close()
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filename := header.Filename
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if query := ctx.FormString("name"); query != "" {
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filename = query
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}
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// Create a new attachment and save the file
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attach, err := attachment.UploadAttachment(file, setting.Repository.Release.AllowedTypes, &repo_model.Attachment{
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Name: filename,
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UploaderID: ctx.Doer.ID,
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RepoID: release.RepoID,
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ReleaseID: releaseID,
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})
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if err != nil {
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if upload.IsErrFileTypeForbidden(err) {
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ctx.Error(http.StatusBadRequest, "DetectContentType", err)
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return
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}
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ctx.Error(http.StatusInternalServerError, "NewAttachment", err)
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return
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}
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ctx.JSON(http.StatusCreated, convert.ToAttachment(attach))
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}
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// EditReleaseAttachment updates the given attachment
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func EditReleaseAttachment(ctx *context.APIContext) {
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// swagger:operation PATCH /repos/{owner}/{repo}/releases/{id}/assets/{attachment_id} repository repoEditReleaseAttachment
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// ---
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// summary: Edit a release attachment
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// produces:
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// - application/json
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// consumes:
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// - application/json
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// parameters:
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// - name: owner
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// in: path
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// description: owner of the repo
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// type: string
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// required: true
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// - name: repo
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// in: path
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// description: name of the repo
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// type: string
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// required: true
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// - name: id
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// in: path
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// description: id of the release
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// type: integer
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// format: int64
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// required: true
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// - name: attachment_id
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// in: path
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// description: id of the attachment to edit
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// type: integer
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// format: int64
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// required: true
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// - name: body
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// in: body
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// schema:
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// "$ref": "#/definitions/EditAttachmentOptions"
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// responses:
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// "201":
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// "$ref": "#/responses/Attachment"
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form := web.GetForm(ctx).(*api.EditAttachmentOptions)
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// Check if release exists an load release
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releaseID := ctx.ParamsInt64(":id")
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attachID := ctx.ParamsInt64(":asset")
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attach, err := repo_model.GetAttachmentByID(ctx, attachID)
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if err != nil {
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if repo_model.IsErrAttachmentNotExist(err) {
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ctx.NotFound()
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return
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}
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ctx.Error(http.StatusInternalServerError, "GetAttachmentByID", err)
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return
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}
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if attach.ReleaseID != releaseID {
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log.Info("User requested attachment is not in release, release_id %v, attachment_id: %v", releaseID, attachID)
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ctx.NotFound()
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return
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}
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// FIXME Should prove the existence of the given repo, but results in unnecessary database requests
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if form.Name != "" {
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attach.Name = form.Name
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}
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if err := repo_model.UpdateAttachment(ctx, attach); err != nil {
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ctx.Error(http.StatusInternalServerError, "UpdateAttachment", attach)
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}
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ctx.JSON(http.StatusCreated, convert.ToAttachment(attach))
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}
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// DeleteReleaseAttachment delete a given attachment
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func DeleteReleaseAttachment(ctx *context.APIContext) {
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// swagger:operation DELETE /repos/{owner}/{repo}/releases/{id}/assets/{attachment_id} repository repoDeleteReleaseAttachment
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// ---
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// summary: Delete a release attachment
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// produces:
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// - application/json
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// parameters:
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// - name: owner
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// in: path
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// description: owner of the repo
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// type: string
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// required: true
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// - name: repo
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// in: path
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// description: name of the repo
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// type: string
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// required: true
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// - name: id
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// in: path
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// description: id of the release
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// type: integer
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// format: int64
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// required: true
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// - name: attachment_id
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// in: path
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// description: id of the attachment to delete
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// type: integer
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// format: int64
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// required: true
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// responses:
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// "204":
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// "$ref": "#/responses/empty"
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// Check if release exists an load release
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releaseID := ctx.ParamsInt64(":id")
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attachID := ctx.ParamsInt64(":asset")
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attach, err := repo_model.GetAttachmentByID(ctx, attachID)
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if err != nil {
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if repo_model.IsErrAttachmentNotExist(err) {
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ctx.NotFound()
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return
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}
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ctx.Error(http.StatusInternalServerError, "GetAttachmentByID", err)
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return
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}
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if attach.ReleaseID != releaseID {
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log.Info("User requested attachment is not in release, release_id %v, attachment_id: %v", releaseID, attachID)
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ctx.NotFound()
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return
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}
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// FIXME Should prove the existence of the given repo, but results in unnecessary database requests
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if err := repo_model.DeleteAttachment(attach, true); err != nil {
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ctx.Error(http.StatusInternalServerError, "DeleteAttachment", err)
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return
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}
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ctx.Status(http.StatusNoContent)
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}
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