mirror of
https://github.com/go-gitea/gitea
synced 2024-06-01 08:55:47 +00:00
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.
414 lines
11 KiB
Go
414 lines
11 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
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// Copyright 2019 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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"errors"
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"fmt"
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"net/http"
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"strings"
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asymkey_model "code.gitea.io/gitea/models/asymkey"
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"code.gitea.io/gitea/models/db"
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git_model "code.gitea.io/gitea/models/git"
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repo_model "code.gitea.io/gitea/models/repo"
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user_model "code.gitea.io/gitea/models/user"
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"code.gitea.io/gitea/modules/base"
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"code.gitea.io/gitea/modules/charset"
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"code.gitea.io/gitea/modules/context"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/gitgraph"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/services/gitdiff"
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)
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const (
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tplCommits base.TplName = "repo/commits"
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tplGraph base.TplName = "repo/graph"
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tplGraphDiv base.TplName = "repo/graph/div"
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tplCommitPage base.TplName = "repo/commit_page"
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)
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// RefCommits render commits page
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func RefCommits(ctx *context.Context) {
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switch {
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case len(ctx.Repo.TreePath) == 0:
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Commits(ctx)
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case ctx.Repo.TreePath == "search":
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SearchCommits(ctx)
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default:
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FileHistory(ctx)
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}
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}
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// Commits render branch's commits
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func Commits(ctx *context.Context) {
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ctx.Data["PageIsCommits"] = true
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if ctx.Repo.Commit == nil {
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ctx.NotFound("Commit not found", nil)
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return
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}
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ctx.Data["PageIsViewCode"] = true
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commitsCount, err := ctx.Repo.GetCommitsCount()
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if err != nil {
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ctx.ServerError("GetCommitsCount", err)
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return
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}
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page := ctx.FormInt("page")
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if page <= 1 {
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page = 1
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}
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pageSize := ctx.FormInt("limit")
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if pageSize <= 0 {
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pageSize = setting.Git.CommitsRangeSize
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}
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// Both `git log branchName` and `git log commitId` work.
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commits, err := ctx.Repo.Commit.CommitsByRange(page, pageSize)
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if err != nil {
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ctx.ServerError("CommitsByRange", err)
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return
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}
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ctx.Data["Commits"] = git_model.ConvertFromGitCommit(ctx, commits, ctx.Repo.Repository)
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ctx.Data["Username"] = ctx.Repo.Owner.Name
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ctx.Data["Reponame"] = ctx.Repo.Repository.Name
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ctx.Data["CommitCount"] = commitsCount
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ctx.Data["RefName"] = ctx.Repo.RefName
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pager := context.NewPagination(int(commitsCount), pageSize, page, 5)
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pager.SetDefaultParams(ctx)
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ctx.Data["Page"] = pager
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ctx.HTML(http.StatusOK, tplCommits)
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}
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// Graph render commit graph - show commits from all branches.
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func Graph(ctx *context.Context) {
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ctx.Data["Title"] = ctx.Tr("repo.commit_graph")
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ctx.Data["PageIsCommits"] = true
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ctx.Data["PageIsViewCode"] = true
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mode := strings.ToLower(ctx.FormTrim("mode"))
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if mode != "monochrome" {
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mode = "color"
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}
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ctx.Data["Mode"] = mode
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hidePRRefs := ctx.FormBool("hide-pr-refs")
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ctx.Data["HidePRRefs"] = hidePRRefs
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branches := ctx.FormStrings("branch")
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realBranches := make([]string, len(branches))
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copy(realBranches, branches)
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for i, branch := range realBranches {
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if strings.HasPrefix(branch, "--") {
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realBranches[i] = git.BranchPrefix + branch
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}
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}
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ctx.Data["SelectedBranches"] = realBranches
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files := ctx.FormStrings("file")
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commitsCount, err := ctx.Repo.GetCommitsCount()
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if err != nil {
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ctx.ServerError("GetCommitsCount", err)
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return
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}
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graphCommitsCount, err := ctx.Repo.GetCommitGraphsCount(ctx, hidePRRefs, realBranches, files)
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if err != nil {
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log.Warn("GetCommitGraphsCount error for generate graph exclude prs: %t branches: %s in %-v, Will Ignore branches and try again. Underlying Error: %v", hidePRRefs, branches, ctx.Repo.Repository, err)
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realBranches = []string{}
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branches = []string{}
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graphCommitsCount, err = ctx.Repo.GetCommitGraphsCount(ctx, hidePRRefs, realBranches, files)
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if err != nil {
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ctx.ServerError("GetCommitGraphsCount", err)
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return
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}
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}
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page := ctx.FormInt("page")
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graph, err := gitgraph.GetCommitGraph(ctx.Repo.GitRepo, page, 0, hidePRRefs, realBranches, files)
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if err != nil {
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ctx.ServerError("GetCommitGraph", err)
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return
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}
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if err := graph.LoadAndProcessCommits(ctx, ctx.Repo.Repository, ctx.Repo.GitRepo); err != nil {
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ctx.ServerError("LoadAndProcessCommits", err)
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return
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}
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ctx.Data["Graph"] = graph
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gitRefs, err := ctx.Repo.GitRepo.GetRefs()
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if err != nil {
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ctx.ServerError("GitRepo.GetRefs", err)
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return
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}
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ctx.Data["AllRefs"] = gitRefs
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ctx.Data["Username"] = ctx.Repo.Owner.Name
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ctx.Data["Reponame"] = ctx.Repo.Repository.Name
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ctx.Data["CommitCount"] = commitsCount
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ctx.Data["RefName"] = ctx.Repo.RefName
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paginator := context.NewPagination(int(graphCommitsCount), setting.UI.GraphMaxCommitNum, page, 5)
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paginator.AddParam(ctx, "mode", "Mode")
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paginator.AddParam(ctx, "hide-pr-refs", "HidePRRefs")
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for _, branch := range branches {
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paginator.AddParamString("branch", branch)
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}
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for _, file := range files {
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paginator.AddParamString("file", file)
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}
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ctx.Data["Page"] = paginator
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if ctx.FormBool("div-only") {
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ctx.HTML(http.StatusOK, tplGraphDiv)
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return
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}
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ctx.HTML(http.StatusOK, tplGraph)
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}
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// SearchCommits render commits filtered by keyword
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func SearchCommits(ctx *context.Context) {
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ctx.Data["PageIsCommits"] = true
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ctx.Data["PageIsViewCode"] = true
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query := ctx.FormTrim("q")
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if len(query) == 0 {
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ctx.Redirect(ctx.Repo.RepoLink + "/commits/" + ctx.Repo.BranchNameSubURL())
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return
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}
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all := ctx.FormBool("all")
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opts := git.NewSearchCommitsOptions(query, all)
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commits, err := ctx.Repo.Commit.SearchCommits(opts)
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if err != nil {
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ctx.ServerError("SearchCommits", err)
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return
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}
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ctx.Data["CommitCount"] = len(commits)
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ctx.Data["Commits"] = git_model.ConvertFromGitCommit(ctx, commits, ctx.Repo.Repository)
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ctx.Data["Keyword"] = query
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if all {
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ctx.Data["All"] = "checked"
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}
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ctx.Data["Username"] = ctx.Repo.Owner.Name
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ctx.Data["Reponame"] = ctx.Repo.Repository.Name
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ctx.Data["RefName"] = ctx.Repo.RefName
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ctx.HTML(http.StatusOK, tplCommits)
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}
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// FileHistory show a file's reversions
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func FileHistory(ctx *context.Context) {
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ctx.Data["IsRepoToolbarCommits"] = true
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fileName := ctx.Repo.TreePath
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if len(fileName) == 0 {
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Commits(ctx)
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return
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}
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commitsCount, err := ctx.Repo.GitRepo.FileCommitsCount(ctx.Repo.RefName, fileName)
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if err != nil {
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ctx.ServerError("FileCommitsCount", err)
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return
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} else if commitsCount == 0 {
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ctx.NotFound("FileCommitsCount", nil)
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return
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}
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page := ctx.FormInt("page")
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if page <= 1 {
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page = 1
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}
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commits, err := ctx.Repo.GitRepo.CommitsByFileAndRange(ctx.Repo.RefName, fileName, page)
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if err != nil {
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ctx.ServerError("CommitsByFileAndRange", err)
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return
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}
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ctx.Data["Commits"] = git_model.ConvertFromGitCommit(ctx, commits, ctx.Repo.Repository)
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ctx.Data["Username"] = ctx.Repo.Owner.Name
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ctx.Data["Reponame"] = ctx.Repo.Repository.Name
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ctx.Data["FileName"] = fileName
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ctx.Data["CommitCount"] = commitsCount
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ctx.Data["RefName"] = ctx.Repo.RefName
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pager := context.NewPagination(int(commitsCount), setting.Git.CommitsRangeSize, page, 5)
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pager.SetDefaultParams(ctx)
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ctx.Data["Page"] = pager
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ctx.HTML(http.StatusOK, tplCommits)
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}
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// Diff show different from current commit to previous commit
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func Diff(ctx *context.Context) {
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ctx.Data["PageIsDiff"] = true
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ctx.Data["RequireTribute"] = true
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userName := ctx.Repo.Owner.Name
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repoName := ctx.Repo.Repository.Name
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commitID := ctx.Params(":sha")
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var (
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gitRepo *git.Repository
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err error
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)
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if ctx.Data["PageIsWiki"] != nil {
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gitRepo, err = git.OpenRepository(ctx, ctx.Repo.Repository.WikiPath())
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if err != nil {
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ctx.ServerError("Repo.GitRepo.GetCommit", err)
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return
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}
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defer gitRepo.Close()
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} else {
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gitRepo = ctx.Repo.GitRepo
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}
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commit, err := gitRepo.GetCommit(commitID)
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if err != nil {
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if git.IsErrNotExist(err) {
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ctx.NotFound("Repo.GitRepo.GetCommit", err)
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} else {
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ctx.ServerError("Repo.GitRepo.GetCommit", err)
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}
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return
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}
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if len(commitID) != git.SHAFullLength {
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commitID = commit.ID.String()
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}
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fileOnly := ctx.FormBool("file-only")
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maxLines, maxFiles := setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffFiles
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files := ctx.FormStrings("files")
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if fileOnly && (len(files) == 2 || len(files) == 1) {
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maxLines, maxFiles = -1, -1
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}
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diff, err := gitdiff.GetDiff(gitRepo, &gitdiff.DiffOptions{
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AfterCommitID: commitID,
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SkipTo: ctx.FormString("skip-to"),
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MaxLines: maxLines,
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MaxLineCharacters: setting.Git.MaxGitDiffLineCharacters,
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MaxFiles: maxFiles,
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WhitespaceBehavior: gitdiff.GetWhitespaceFlag(ctx.Data["WhitespaceBehavior"].(string)),
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}, files...)
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if err != nil {
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ctx.NotFound("GetDiff", err)
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return
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}
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parents := make([]string, commit.ParentCount())
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for i := 0; i < commit.ParentCount(); i++ {
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sha, err := commit.ParentID(i)
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if err != nil {
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ctx.NotFound("repo.Diff", err)
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return
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}
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parents[i] = sha.String()
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}
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ctx.Data["CommitID"] = commitID
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ctx.Data["AfterCommitID"] = commitID
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ctx.Data["Username"] = userName
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ctx.Data["Reponame"] = repoName
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var parentCommit *git.Commit
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if commit.ParentCount() > 0 {
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parentCommit, err = gitRepo.GetCommit(parents[0])
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if err != nil {
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ctx.NotFound("GetParentCommit", err)
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return
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}
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}
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setCompareContext(ctx, parentCommit, commit, userName, repoName)
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ctx.Data["Title"] = commit.Summary() + " · " + base.ShortSha(commitID)
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ctx.Data["Commit"] = commit
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ctx.Data["Diff"] = diff
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statuses, _, err := git_model.GetLatestCommitStatus(ctx, ctx.Repo.Repository.ID, commitID, db.ListOptions{})
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if err != nil {
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log.Error("GetLatestCommitStatus: %v", err)
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}
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ctx.Data["CommitStatus"] = git_model.CalcCommitStatus(statuses)
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ctx.Data["CommitStatuses"] = statuses
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verification := asymkey_model.ParseCommitWithSignature(ctx, commit)
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ctx.Data["Verification"] = verification
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ctx.Data["Author"] = user_model.ValidateCommitWithEmail(ctx, commit)
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ctx.Data["Parents"] = parents
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ctx.Data["DiffNotAvailable"] = diff.NumFiles == 0
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if err := asymkey_model.CalculateTrustStatus(verification, ctx.Repo.Repository.GetTrustModel(), func(user *user_model.User) (bool, error) {
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return repo_model.IsOwnerMemberCollaborator(ctx.Repo.Repository, user.ID)
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}, nil); err != nil {
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ctx.ServerError("CalculateTrustStatus", err)
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return
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}
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note := &git.Note{}
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err = git.GetNote(ctx, ctx.Repo.GitRepo, commitID, note)
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if err == nil {
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ctx.Data["Note"] = string(charset.ToUTF8WithFallback(note.Message))
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ctx.Data["NoteCommit"] = note.Commit
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ctx.Data["NoteAuthor"] = user_model.ValidateCommitWithEmail(ctx, note.Commit)
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}
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ctx.Data["BranchName"], err = commit.GetBranchName()
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if err != nil {
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ctx.ServerError("commit.GetBranchName", err)
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return
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}
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ctx.Data["TagName"], err = commit.GetTagName()
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if err != nil {
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ctx.ServerError("commit.GetTagName", err)
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return
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}
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ctx.HTML(http.StatusOK, tplCommitPage)
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}
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// RawDiff dumps diff results of repository in given commit ID to io.Writer
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func RawDiff(ctx *context.Context) {
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var gitRepo *git.Repository
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if ctx.Data["PageIsWiki"] != nil {
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wikiRepo, err := git.OpenRepository(ctx, ctx.Repo.Repository.WikiPath())
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if err != nil {
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ctx.ServerError("OpenRepository", err)
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return
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}
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defer wikiRepo.Close()
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gitRepo = wikiRepo
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} else {
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gitRepo = ctx.Repo.GitRepo
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if gitRepo == nil {
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ctx.ServerError("GitRepo not open", fmt.Errorf("no open git repo for '%s'", ctx.Repo.Repository.FullName()))
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return
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}
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}
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if err := git.GetRawDiff(
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gitRepo,
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ctx.Params(":sha"),
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git.RawDiffType(ctx.Params(":ext")),
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ctx.Resp,
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); err != nil {
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if git.IsErrNotExist(err) {
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ctx.NotFound("GetRawDiff",
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errors.New("commit "+ctx.Params(":sha")+" does not exist."))
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return
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}
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ctx.ServerError("GetRawDiff", err)
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return
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}
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}
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