forgejo/services/convert/pull.go

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// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package convert
import (
"context"
"fmt"
issues_model "code.gitea.io/gitea/models/issues"
"code.gitea.io/gitea/models/perm"
access_model "code.gitea.io/gitea/models/perm/access"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/cache"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/gitrepo"
"code.gitea.io/gitea/modules/log"
api "code.gitea.io/gitea/modules/structs"
)
// ToAPIPullRequest assumes following fields have been assigned with valid values:
// Required - Issue
// Optional - Merger
func ToAPIPullRequest(ctx context.Context, pr *issues_model.PullRequest, doer *user_model.User) *api.PullRequest {
var (
baseBranch *git.Branch
headBranch *git.Branch
baseCommit *git.Commit
err error
)
if err = pr.Issue.LoadRepo(ctx); err != nil {
log.Error("pr.Issue.LoadRepo[%d]: %v", pr.ID, err)
return nil
}
apiIssue := ToAPIIssue(ctx, doer, pr.Issue)
if err := pr.LoadBaseRepo(ctx); err != nil {
log.Error("GetRepositoryById[%d]: %v", pr.ID, err)
return nil
}
if err := pr.LoadHeadRepo(ctx); err != nil {
log.Error("GetRepositoryById[%d]: %v", pr.ID, err)
return nil
}
var doerID int64
if doer != nil {
doerID = doer.ID
}
const repoDoerPermCacheKey = "repo_doer_perm_cache"
p, err := cache.GetWithContextCache(ctx, repoDoerPermCacheKey, fmt.Sprintf("%d_%d", pr.BaseRepoID, doerID),
func() (access_model.Permission, error) {
return access_model.GetUserRepoPermission(ctx, pr.BaseRepo, doer)
})
if err != nil {
log.Error("GetUserRepoPermission[%d]: %v", pr.BaseRepoID, err)
p.AccessMode = perm.AccessModeNone
}
apiPullRequest := &api.PullRequest{
ID: pr.ID,
URL: pr.Issue.HTMLURL(),
Index: pr.Index,
Poster: apiIssue.Poster,
Title: apiIssue.Title,
Body: apiIssue.Body,
Labels: apiIssue.Labels,
Milestone: apiIssue.Milestone,
Assignee: apiIssue.Assignee,
Assignees: apiIssue.Assignees,
State: apiIssue.State,
Draft: pr.IsWorkInProgress(ctx),
IsLocked: apiIssue.IsLocked,
Comments: apiIssue.Comments,
ReviewComments: pr.GetReviewCommentsCount(ctx),
HTMLURL: pr.Issue.HTMLURL(),
DiffURL: pr.Issue.DiffURL(),
PatchURL: pr.Issue.PatchURL(),
HasMerged: pr.HasMerged,
MergeBase: pr.MergeBase,
Mergeable: pr.Mergeable(ctx),
Deadline: apiIssue.Deadline,
Created: pr.Issue.CreatedUnix.AsTimePtr(),
Updated: pr.Issue.UpdatedUnix.AsTimePtr(),
PinOrder: apiIssue.PinOrder,
AllowMaintainerEdit: pr.AllowMaintainerEdit,
Base: &api.PRBranchInfo{
Name: pr.BaseBranch,
Ref: pr.BaseBranch,
RepoID: pr.BaseRepoID,
Repository: ToRepo(ctx, pr.BaseRepo, p),
},
Head: &api.PRBranchInfo{
Name: pr.HeadBranch,
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Ref: fmt.Sprintf("%s%d/head", git.PullPrefix, pr.Index),
RepoID: -1,
},
}
if err = pr.LoadRequestedReviewers(ctx); err != nil {
log.Error("LoadRequestedReviewers[%d]: %v", pr.ID, err)
return nil
}
for _, reviewer := range pr.RequestedReviewers {
apiPullRequest.RequestedReviewers = append(apiPullRequest.RequestedReviewers, ToUser(ctx, reviewer, nil))
}
if pr.Issue.ClosedUnix != 0 {
apiPullRequest.Closed = pr.Issue.ClosedUnix.AsTimePtr()
}
gitRepo, err := gitrepo.OpenRepository(ctx, pr.BaseRepo)
if err != nil {
log.Error("OpenRepository[%s]: %v", pr.BaseRepo.RepoPath(), err)
return nil
}
defer gitRepo.Close()
baseBranch, err = gitRepo.GetBranch(pr.BaseBranch)
if err != nil && !git.IsErrBranchNotExist(err) {
log.Error("GetBranch[%s]: %v", pr.BaseBranch, err)
return nil
}
if err == nil {
baseCommit, err = baseBranch.GetCommit()
if err != nil && !git.IsErrNotExist(err) {
log.Error("GetCommit[%s]: %v", baseBranch.Name, err)
return nil
}
if err == nil {
apiPullRequest.Base.Sha = baseCommit.ID.String()
}
}
if pr.Flow == issues_model.PullRequestFlowAGit {
gitRepo, err := gitrepo.OpenRepository(ctx, pr.BaseRepo)
if err != nil {
log.Error("OpenRepository[%s]: %v", pr.GetGitRefName(), err)
return nil
}
defer gitRepo.Close()
apiPullRequest.Head.Sha, err = gitRepo.GetRefCommitID(pr.GetGitRefName())
if err != nil {
log.Error("GetRefCommitID[%s]: %v", pr.GetGitRefName(), err)
return nil
}
apiPullRequest.Head.RepoID = pr.BaseRepoID
apiPullRequest.Head.Repository = apiPullRequest.Base.Repository
apiPullRequest.Head.Name = ""
}
if pr.HeadRepo != nil && pr.Flow == issues_model.PullRequestFlowGithub {
p, err := access_model.GetUserRepoPermission(ctx, pr.HeadRepo, doer)
if err != nil {
log.Error("GetUserRepoPermission[%d]: %v", pr.HeadRepoID, err)
p.AccessMode = perm.AccessModeNone
}
apiPullRequest.Head.RepoID = pr.HeadRepo.ID
apiPullRequest.Head.Repository = ToRepo(ctx, pr.HeadRepo, p)
headGitRepo, err := gitrepo.OpenRepository(ctx, pr.HeadRepo)
if err != nil {
log.Error("OpenRepository[%s]: %v", pr.HeadRepo.RepoPath(), err)
return nil
}
defer headGitRepo.Close()
headBranch, err = headGitRepo.GetBranch(pr.HeadBranch)
if err != nil && !git.IsErrBranchNotExist(err) {
log.Error("GetBranch[%s]: %v", pr.HeadBranch, err)
return nil
}
// Outer scope variables to be used in diff calculation
var (
startCommitID string
endCommitID string
)
if git.IsErrBranchNotExist(err) {
headCommitID, err := headGitRepo.GetRefCommitID(apiPullRequest.Head.Ref)
if err != nil && !git.IsErrNotExist(err) {
log.Error("GetCommit[%s]: %v", pr.HeadBranch, err)
return nil
}
if err == nil {
apiPullRequest.Head.Sha = headCommitID
endCommitID = headCommitID
}
} else {
commit, err := headBranch.GetCommit()
if err != nil && !git.IsErrNotExist(err) {
log.Error("GetCommit[%s]: %v", headBranch.Name, err)
return nil
}
if err == nil {
apiPullRequest.Head.Ref = pr.HeadBranch
apiPullRequest.Head.Sha = commit.ID.String()
endCommitID = commit.ID.String()
}
}
// Calculate diff
startCommitID = pr.MergeBase
apiPullRequest.ChangedFiles, apiPullRequest.Additions, apiPullRequest.Deletions, err = gitRepo.GetDiffShortStat(startCommitID, endCommitID)
if err != nil {
log.Error("GetDiffShortStat: %v", err)
}
}
if len(apiPullRequest.Head.Sha) == 0 && len(apiPullRequest.Head.Ref) != 0 {
baseGitRepo, err := gitrepo.OpenRepository(ctx, pr.BaseRepo)
if err != nil {
log.Error("OpenRepository[%s]: %v", pr.BaseRepo.RepoPath(), err)
return nil
}
defer baseGitRepo.Close()
refs, err := baseGitRepo.GetRefsFiltered(apiPullRequest.Head.Ref)
if err != nil {
log.Error("GetRefsFiltered[%s]: %v", apiPullRequest.Head.Ref, err)
return nil
} else if len(refs) == 0 {
log.Error("unable to resolve PR head ref")
} else {
apiPullRequest.Head.Sha = refs[0].Object.String()
}
}
if pr.HasMerged {
apiPullRequest.Merged = pr.MergedUnix.AsTimePtr()
apiPullRequest.MergedCommitID = &pr.MergedCommitID
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.
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apiPullRequest.MergedBy = ToUser(ctx, pr.Merger, nil)
}
return apiPullRequest
}