forgejo/routers/api/v1/repo/issue_reaction.go
Lunny Xiao bd820aa9c5
Add context cache as a request level cache (#22294)
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.
2023-02-15 21:37:34 +08:00

440 lines
12 KiB
Go

// Copyright 2019 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package repo
import (
"errors"
"net/http"
issues_model "code.gitea.io/gitea/models/issues"
"code.gitea.io/gitea/modules/context"
api "code.gitea.io/gitea/modules/structs"
"code.gitea.io/gitea/modules/web"
"code.gitea.io/gitea/routers/api/v1/utils"
"code.gitea.io/gitea/services/convert"
)
// GetIssueCommentReactions list reactions of a comment from an issue
func GetIssueCommentReactions(ctx *context.APIContext) {
// swagger:operation GET /repos/{owner}/{repo}/issues/comments/{id}/reactions issue issueGetCommentReactions
// ---
// summary: Get a list of reactions from a comment of an issue
// consumes:
// - application/json
// produces:
// - application/json
// parameters:
// - name: owner
// in: path
// description: owner of the repo
// type: string
// required: true
// - name: repo
// in: path
// description: name of the repo
// type: string
// required: true
// - name: id
// in: path
// description: id of the comment to edit
// type: integer
// format: int64
// required: true
// responses:
// "200":
// "$ref": "#/responses/ReactionList"
// "403":
// "$ref": "#/responses/forbidden"
comment, err := issues_model.GetCommentByID(ctx, ctx.ParamsInt64(":id"))
if err != nil {
if issues_model.IsErrCommentNotExist(err) {
ctx.NotFound(err)
} else {
ctx.Error(http.StatusInternalServerError, "GetCommentByID", err)
}
return
}
if err := comment.LoadIssue(ctx); err != nil {
ctx.Error(http.StatusInternalServerError, "comment.LoadIssue", err)
}
if !ctx.Repo.CanReadIssuesOrPulls(comment.Issue.IsPull) {
ctx.Error(http.StatusForbidden, "GetIssueCommentReactions", errors.New("no permission to get reactions"))
return
}
reactions, _, err := issues_model.FindCommentReactions(comment.IssueID, comment.ID)
if err != nil {
ctx.Error(http.StatusInternalServerError, "FindCommentReactions", err)
return
}
_, err = reactions.LoadUsers(ctx, ctx.Repo.Repository)
if err != nil {
ctx.Error(http.StatusInternalServerError, "ReactionList.LoadUsers()", err)
return
}
var result []api.Reaction
for _, r := range reactions {
result = append(result, api.Reaction{
User: convert.ToUser(ctx, r.User, ctx.Doer),
Reaction: r.Type,
Created: r.CreatedUnix.AsTime(),
})
}
ctx.JSON(http.StatusOK, result)
}
// PostIssueCommentReaction add a reaction to a comment of an issue
func PostIssueCommentReaction(ctx *context.APIContext) {
// swagger:operation POST /repos/{owner}/{repo}/issues/comments/{id}/reactions issue issuePostCommentReaction
// ---
// summary: Add a reaction to a comment of an issue
// consumes:
// - application/json
// produces:
// - application/json
// parameters:
// - name: owner
// in: path
// description: owner of the repo
// type: string
// required: true
// - name: repo
// in: path
// description: name of the repo
// type: string
// required: true
// - name: id
// in: path
// description: id of the comment to edit
// type: integer
// format: int64
// required: true
// - name: content
// in: body
// schema:
// "$ref": "#/definitions/EditReactionOption"
// responses:
// "200":
// "$ref": "#/responses/Reaction"
// "201":
// "$ref": "#/responses/Reaction"
// "403":
// "$ref": "#/responses/forbidden"
form := web.GetForm(ctx).(*api.EditReactionOption)
changeIssueCommentReaction(ctx, *form, true)
}
// DeleteIssueCommentReaction remove a reaction from a comment of an issue
func DeleteIssueCommentReaction(ctx *context.APIContext) {
// swagger:operation DELETE /repos/{owner}/{repo}/issues/comments/{id}/reactions issue issueDeleteCommentReaction
// ---
// summary: Remove a reaction from a comment of an issue
// consumes:
// - application/json
// produces:
// - application/json
// parameters:
// - name: owner
// in: path
// description: owner of the repo
// type: string
// required: true
// - name: repo
// in: path
// description: name of the repo
// type: string
// required: true
// - name: id
// in: path
// description: id of the comment to edit
// type: integer
// format: int64
// required: true
// - name: content
// in: body
// schema:
// "$ref": "#/definitions/EditReactionOption"
// responses:
// "200":
// "$ref": "#/responses/empty"
// "403":
// "$ref": "#/responses/forbidden"
form := web.GetForm(ctx).(*api.EditReactionOption)
changeIssueCommentReaction(ctx, *form, false)
}
func changeIssueCommentReaction(ctx *context.APIContext, form api.EditReactionOption, isCreateType bool) {
comment, err := issues_model.GetCommentByID(ctx, ctx.ParamsInt64(":id"))
if err != nil {
if issues_model.IsErrCommentNotExist(err) {
ctx.NotFound(err)
} else {
ctx.Error(http.StatusInternalServerError, "GetCommentByID", err)
}
return
}
err = comment.LoadIssue(ctx)
if err != nil {
ctx.Error(http.StatusInternalServerError, "comment.LoadIssue() failed", err)
}
if comment.Issue.IsLocked && !ctx.Repo.CanWriteIssuesOrPulls(comment.Issue.IsPull) {
ctx.Error(http.StatusForbidden, "ChangeIssueCommentReaction", errors.New("no permission to change reaction"))
return
}
if isCreateType {
// PostIssueCommentReaction part
reaction, err := issues_model.CreateCommentReaction(ctx.Doer.ID, comment.Issue.ID, comment.ID, form.Reaction)
if err != nil {
if issues_model.IsErrForbiddenIssueReaction(err) {
ctx.Error(http.StatusForbidden, err.Error(), err)
} else if issues_model.IsErrReactionAlreadyExist(err) {
ctx.JSON(http.StatusOK, api.Reaction{
User: convert.ToUser(ctx, ctx.Doer, ctx.Doer),
Reaction: reaction.Type,
Created: reaction.CreatedUnix.AsTime(),
})
} else {
ctx.Error(http.StatusInternalServerError, "CreateCommentReaction", err)
}
return
}
ctx.JSON(http.StatusCreated, api.Reaction{
User: convert.ToUser(ctx, ctx.Doer, ctx.Doer),
Reaction: reaction.Type,
Created: reaction.CreatedUnix.AsTime(),
})
} else {
// DeleteIssueCommentReaction part
err = issues_model.DeleteCommentReaction(ctx.Doer.ID, comment.Issue.ID, comment.ID, form.Reaction)
if err != nil {
ctx.Error(http.StatusInternalServerError, "DeleteCommentReaction", err)
return
}
// ToDo respond 204
ctx.Status(http.StatusOK)
}
}
// GetIssueReactions list reactions of an issue
func GetIssueReactions(ctx *context.APIContext) {
// swagger:operation GET /repos/{owner}/{repo}/issues/{index}/reactions issue issueGetIssueReactions
// ---
// summary: Get a list reactions of an issue
// consumes:
// - application/json
// produces:
// - application/json
// parameters:
// - name: owner
// in: path
// description: owner of the repo
// type: string
// required: true
// - name: repo
// in: path
// description: name of the repo
// type: string
// required: true
// - name: index
// in: path
// description: index of the issue
// type: integer
// format: int64
// required: true
// - name: page
// in: query
// description: page number of results to return (1-based)
// type: integer
// - name: limit
// in: query
// description: page size of results
// type: integer
// responses:
// "200":
// "$ref": "#/responses/ReactionList"
// "403":
// "$ref": "#/responses/forbidden"
issue, err := issues_model.GetIssueWithAttrsByIndex(ctx.Repo.Repository.ID, ctx.ParamsInt64(":index"))
if err != nil {
if issues_model.IsErrIssueNotExist(err) {
ctx.NotFound()
} else {
ctx.Error(http.StatusInternalServerError, "GetIssueByIndex", err)
}
return
}
if !ctx.Repo.CanReadIssuesOrPulls(issue.IsPull) {
ctx.Error(http.StatusForbidden, "GetIssueReactions", errors.New("no permission to get reactions"))
return
}
reactions, count, err := issues_model.FindIssueReactions(issue.ID, utils.GetListOptions(ctx))
if err != nil {
ctx.Error(http.StatusInternalServerError, "FindIssueReactions", err)
return
}
_, err = reactions.LoadUsers(ctx, ctx.Repo.Repository)
if err != nil {
ctx.Error(http.StatusInternalServerError, "ReactionList.LoadUsers()", err)
return
}
var result []api.Reaction
for _, r := range reactions {
result = append(result, api.Reaction{
User: convert.ToUser(ctx, r.User, ctx.Doer),
Reaction: r.Type,
Created: r.CreatedUnix.AsTime(),
})
}
ctx.SetTotalCountHeader(count)
ctx.JSON(http.StatusOK, result)
}
// PostIssueReaction add a reaction to an issue
func PostIssueReaction(ctx *context.APIContext) {
// swagger:operation POST /repos/{owner}/{repo}/issues/{index}/reactions issue issuePostIssueReaction
// ---
// summary: Add a reaction to an issue
// consumes:
// - application/json
// produces:
// - application/json
// parameters:
// - name: owner
// in: path
// description: owner of the repo
// type: string
// required: true
// - name: repo
// in: path
// description: name of the repo
// type: string
// required: true
// - name: index
// in: path
// description: index of the issue
// type: integer
// format: int64
// required: true
// - name: content
// in: body
// schema:
// "$ref": "#/definitions/EditReactionOption"
// responses:
// "200":
// "$ref": "#/responses/Reaction"
// "201":
// "$ref": "#/responses/Reaction"
// "403":
// "$ref": "#/responses/forbidden"
form := web.GetForm(ctx).(*api.EditReactionOption)
changeIssueReaction(ctx, *form, true)
}
// DeleteIssueReaction remove a reaction from an issue
func DeleteIssueReaction(ctx *context.APIContext) {
// swagger:operation DELETE /repos/{owner}/{repo}/issues/{index}/reactions issue issueDeleteIssueReaction
// ---
// summary: Remove a reaction from an issue
// consumes:
// - application/json
// produces:
// - application/json
// parameters:
// - name: owner
// in: path
// description: owner of the repo
// type: string
// required: true
// - name: repo
// in: path
// description: name of the repo
// type: string
// required: true
// - name: index
// in: path
// description: index of the issue
// type: integer
// format: int64
// required: true
// - name: content
// in: body
// schema:
// "$ref": "#/definitions/EditReactionOption"
// responses:
// "200":
// "$ref": "#/responses/empty"
// "403":
// "$ref": "#/responses/forbidden"
form := web.GetForm(ctx).(*api.EditReactionOption)
changeIssueReaction(ctx, *form, false)
}
func changeIssueReaction(ctx *context.APIContext, form api.EditReactionOption, isCreateType bool) {
issue, err := issues_model.GetIssueWithAttrsByIndex(ctx.Repo.Repository.ID, ctx.ParamsInt64(":index"))
if err != nil {
if issues_model.IsErrIssueNotExist(err) {
ctx.NotFound()
} else {
ctx.Error(http.StatusInternalServerError, "GetIssueByIndex", err)
}
return
}
if issue.IsLocked && !ctx.Repo.CanWriteIssuesOrPulls(issue.IsPull) {
ctx.Error(http.StatusForbidden, "ChangeIssueCommentReaction", errors.New("no permission to change reaction"))
return
}
if isCreateType {
// PostIssueReaction part
reaction, err := issues_model.CreateIssueReaction(ctx.Doer.ID, issue.ID, form.Reaction)
if err != nil {
if issues_model.IsErrForbiddenIssueReaction(err) {
ctx.Error(http.StatusForbidden, err.Error(), err)
} else if issues_model.IsErrReactionAlreadyExist(err) {
ctx.JSON(http.StatusOK, api.Reaction{
User: convert.ToUser(ctx, ctx.Doer, ctx.Doer),
Reaction: reaction.Type,
Created: reaction.CreatedUnix.AsTime(),
})
} else {
ctx.Error(http.StatusInternalServerError, "CreateCommentReaction", err)
}
return
}
ctx.JSON(http.StatusCreated, api.Reaction{
User: convert.ToUser(ctx, ctx.Doer, ctx.Doer),
Reaction: reaction.Type,
Created: reaction.CreatedUnix.AsTime(),
})
} else {
// DeleteIssueReaction part
err = issues_model.DeleteIssueReaction(ctx.Doer.ID, issue.ID, form.Reaction)
if err != nil {
ctx.Error(http.StatusInternalServerError, "DeleteIssueReaction", err)
return
}
// ToDo respond 204
ctx.Status(http.StatusOK)
}
}