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gitea/models/activities/repo_activity.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

365 lines
11 KiB
Go

// Copyright 2017 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package activities
import (
"context"
"fmt"
"sort"
"time"
"code.gitea.io/gitea/models/db"
issues_model "code.gitea.io/gitea/models/issues"
repo_model "code.gitea.io/gitea/models/repo"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/git"
"xorm.io/xorm"
)
// ActivityAuthorData represents statistical git commit count data
type ActivityAuthorData struct {
Name string `json:"name"`
Login string `json:"login"`
AvatarLink string `json:"avatar_link"`
HomeLink string `json:"home_link"`
Commits int64 `json:"commits"`
}
// ActivityStats represents issue and pull request information.
type ActivityStats struct {
OpenedPRs issues_model.PullRequestList
OpenedPRAuthorCount int64
MergedPRs issues_model.PullRequestList
MergedPRAuthorCount int64
OpenedIssues issues_model.IssueList
OpenedIssueAuthorCount int64
ClosedIssues issues_model.IssueList
ClosedIssueAuthorCount int64
UnresolvedIssues issues_model.IssueList
PublishedReleases []*repo_model.Release
PublishedReleaseAuthorCount int64
Code *git.CodeActivityStats
}
// GetActivityStats return stats for repository at given time range
func GetActivityStats(ctx context.Context, repo *repo_model.Repository, timeFrom time.Time, releases, issues, prs, code bool) (*ActivityStats, error) {
stats := &ActivityStats{Code: &git.CodeActivityStats{}}
if releases {
if err := stats.FillReleases(repo.ID, timeFrom); err != nil {
return nil, fmt.Errorf("FillReleases: %w", err)
}
}
if prs {
if err := stats.FillPullRequests(repo.ID, timeFrom); err != nil {
return nil, fmt.Errorf("FillPullRequests: %w", err)
}
}
if issues {
if err := stats.FillIssues(repo.ID, timeFrom); err != nil {
return nil, fmt.Errorf("FillIssues: %w", err)
}
}
if err := stats.FillUnresolvedIssues(repo.ID, timeFrom, issues, prs); err != nil {
return nil, fmt.Errorf("FillUnresolvedIssues: %w", err)
}
if code {
gitRepo, closer, err := git.RepositoryFromContextOrOpen(ctx, repo.RepoPath())
if err != nil {
return nil, fmt.Errorf("OpenRepository: %w", err)
}
defer closer.Close()
code, err := gitRepo.GetCodeActivityStats(timeFrom, repo.DefaultBranch)
if err != nil {
return nil, fmt.Errorf("FillFromGit: %w", err)
}
stats.Code = code
}
return stats, nil
}
// GetActivityStatsTopAuthors returns top author stats for git commits for all branches
func GetActivityStatsTopAuthors(ctx context.Context, repo *repo_model.Repository, timeFrom time.Time, count int) ([]*ActivityAuthorData, error) {
gitRepo, closer, err := git.RepositoryFromContextOrOpen(ctx, repo.RepoPath())
if err != nil {
return nil, fmt.Errorf("OpenRepository: %w", err)
}
defer closer.Close()
code, err := gitRepo.GetCodeActivityStats(timeFrom, "")
if err != nil {
return nil, fmt.Errorf("FillFromGit: %w", err)
}
if code.Authors == nil {
return nil, nil
}
users := make(map[int64]*ActivityAuthorData)
var unknownUserID int64
unknownUserAvatarLink := user_model.NewGhostUser().AvatarLink(ctx)
for _, v := range code.Authors {
if len(v.Email) == 0 {
continue
}
u, err := user_model.GetUserByEmail(ctx, v.Email)
if u == nil || user_model.IsErrUserNotExist(err) {
unknownUserID--
users[unknownUserID] = &ActivityAuthorData{
Name: v.Name,
AvatarLink: unknownUserAvatarLink,
Commits: v.Commits,
}
continue
}
if err != nil {
return nil, err
}
if user, ok := users[u.ID]; !ok {
users[u.ID] = &ActivityAuthorData{
Name: u.DisplayName(),
Login: u.LowerName,
AvatarLink: u.AvatarLink(ctx),
HomeLink: u.HomeLink(),
Commits: v.Commits,
}
} else {
user.Commits += v.Commits
}
}
v := make([]*ActivityAuthorData, 0, len(users))
for _, u := range users {
v = append(v, u)
}
sort.Slice(v, func(i, j int) bool {
return v[i].Commits > v[j].Commits
})
cnt := count
if cnt > len(v) {
cnt = len(v)
}
return v[:cnt], nil
}
// ActivePRCount returns total active pull request count
func (stats *ActivityStats) ActivePRCount() int {
return stats.OpenedPRCount() + stats.MergedPRCount()
}
// OpenedPRCount returns opened pull request count
func (stats *ActivityStats) OpenedPRCount() int {
return len(stats.OpenedPRs)
}
// OpenedPRPerc returns opened pull request percents from total active
func (stats *ActivityStats) OpenedPRPerc() int {
return int(float32(stats.OpenedPRCount()) / float32(stats.ActivePRCount()) * 100.0)
}
// MergedPRCount returns merged pull request count
func (stats *ActivityStats) MergedPRCount() int {
return len(stats.MergedPRs)
}
// MergedPRPerc returns merged pull request percent from total active
func (stats *ActivityStats) MergedPRPerc() int {
return int(float32(stats.MergedPRCount()) / float32(stats.ActivePRCount()) * 100.0)
}
// ActiveIssueCount returns total active issue count
func (stats *ActivityStats) ActiveIssueCount() int {
return stats.OpenedIssueCount() + stats.ClosedIssueCount()
}
// OpenedIssueCount returns open issue count
func (stats *ActivityStats) OpenedIssueCount() int {
return len(stats.OpenedIssues)
}
// OpenedIssuePerc returns open issue count percent from total active
func (stats *ActivityStats) OpenedIssuePerc() int {
return int(float32(stats.OpenedIssueCount()) / float32(stats.ActiveIssueCount()) * 100.0)
}
// ClosedIssueCount returns closed issue count
func (stats *ActivityStats) ClosedIssueCount() int {
return len(stats.ClosedIssues)
}
// ClosedIssuePerc returns closed issue count percent from total active
func (stats *ActivityStats) ClosedIssuePerc() int {
return int(float32(stats.ClosedIssueCount()) / float32(stats.ActiveIssueCount()) * 100.0)
}
// UnresolvedIssueCount returns unresolved issue and pull request count
func (stats *ActivityStats) UnresolvedIssueCount() int {
return len(stats.UnresolvedIssues)
}
// PublishedReleaseCount returns published release count
func (stats *ActivityStats) PublishedReleaseCount() int {
return len(stats.PublishedReleases)
}
// FillPullRequests returns pull request information for activity page
func (stats *ActivityStats) FillPullRequests(repoID int64, fromTime time.Time) error {
var err error
var count int64
// Merged pull requests
sess := pullRequestsForActivityStatement(repoID, fromTime, true)
sess.OrderBy("pull_request.merged_unix DESC")
stats.MergedPRs = make(issues_model.PullRequestList, 0)
if err = sess.Find(&stats.MergedPRs); err != nil {
return err
}
if err = stats.MergedPRs.LoadAttributes(); err != nil {
return err
}
// Merged pull request authors
sess = pullRequestsForActivityStatement(repoID, fromTime, true)
if _, err = sess.Select("count(distinct issue.poster_id) as `count`").Table("pull_request").Get(&count); err != nil {
return err
}
stats.MergedPRAuthorCount = count
// Opened pull requests
sess = pullRequestsForActivityStatement(repoID, fromTime, false)
sess.OrderBy("issue.created_unix ASC")
stats.OpenedPRs = make(issues_model.PullRequestList, 0)
if err = sess.Find(&stats.OpenedPRs); err != nil {
return err
}
if err = stats.OpenedPRs.LoadAttributes(); err != nil {
return err
}
// Opened pull request authors
sess = pullRequestsForActivityStatement(repoID, fromTime, false)
if _, err = sess.Select("count(distinct issue.poster_id) as `count`").Table("pull_request").Get(&count); err != nil {
return err
}
stats.OpenedPRAuthorCount = count
return nil
}
func pullRequestsForActivityStatement(repoID int64, fromTime time.Time, merged bool) *xorm.Session {
sess := db.GetEngine(db.DefaultContext).Where("pull_request.base_repo_id=?", repoID).
Join("INNER", "issue", "pull_request.issue_id = issue.id")
if merged {
sess.And("pull_request.has_merged = ?", true)
sess.And("pull_request.merged_unix >= ?", fromTime.Unix())
} else {
sess.And("issue.is_closed = ?", false)
sess.And("issue.created_unix >= ?", fromTime.Unix())
}
return sess
}
// FillIssues returns issue information for activity page
func (stats *ActivityStats) FillIssues(repoID int64, fromTime time.Time) error {
var err error
var count int64
// Closed issues
sess := issuesForActivityStatement(repoID, fromTime, true, false)
sess.OrderBy("issue.closed_unix DESC")
stats.ClosedIssues = make(issues_model.IssueList, 0)
if err = sess.Find(&stats.ClosedIssues); err != nil {
return err
}
// Closed issue authors
sess = issuesForActivityStatement(repoID, fromTime, true, false)
if _, err = sess.Select("count(distinct issue.poster_id) as `count`").Table("issue").Get(&count); err != nil {
return err
}
stats.ClosedIssueAuthorCount = count
// New issues
sess = issuesForActivityStatement(repoID, fromTime, false, false)
sess.OrderBy("issue.created_unix ASC")
stats.OpenedIssues = make(issues_model.IssueList, 0)
if err = sess.Find(&stats.OpenedIssues); err != nil {
return err
}
// Opened issue authors
sess = issuesForActivityStatement(repoID, fromTime, false, false)
if _, err = sess.Select("count(distinct issue.poster_id) as `count`").Table("issue").Get(&count); err != nil {
return err
}
stats.OpenedIssueAuthorCount = count
return nil
}
// FillUnresolvedIssues returns unresolved issue and pull request information for activity page
func (stats *ActivityStats) FillUnresolvedIssues(repoID int64, fromTime time.Time, issues, prs bool) error {
// Check if we need to select anything
if !issues && !prs {
return nil
}
sess := issuesForActivityStatement(repoID, fromTime, false, true)
if !issues || !prs {
sess.And("issue.is_pull = ?", prs)
}
sess.OrderBy("issue.updated_unix DESC")
stats.UnresolvedIssues = make(issues_model.IssueList, 0)
return sess.Find(&stats.UnresolvedIssues)
}
func issuesForActivityStatement(repoID int64, fromTime time.Time, closed, unresolved bool) *xorm.Session {
sess := db.GetEngine(db.DefaultContext).Where("issue.repo_id = ?", repoID).
And("issue.is_closed = ?", closed)
if !unresolved {
sess.And("issue.is_pull = ?", false)
if closed {
sess.And("issue.closed_unix >= ?", fromTime.Unix())
} else {
sess.And("issue.created_unix >= ?", fromTime.Unix())
}
} else {
sess.And("issue.created_unix < ?", fromTime.Unix())
sess.And("issue.updated_unix >= ?", fromTime.Unix())
}
return sess
}
// FillReleases returns release information for activity page
func (stats *ActivityStats) FillReleases(repoID int64, fromTime time.Time) error {
var err error
var count int64
// Published releases list
sess := releasesForActivityStatement(repoID, fromTime)
sess.OrderBy("release.created_unix DESC")
stats.PublishedReleases = make([]*repo_model.Release, 0)
if err = sess.Find(&stats.PublishedReleases); err != nil {
return err
}
// Published releases authors
sess = releasesForActivityStatement(repoID, fromTime)
if _, err = sess.Select("count(distinct release.publisher_id) as `count`").Table("release").Get(&count); err != nil {
return err
}
stats.PublishedReleaseAuthorCount = count
return nil
}
func releasesForActivityStatement(repoID int64, fromTime time.Time) *xorm.Session {
return db.GetEngine(db.DefaultContext).Where("release.repo_id = ?", repoID).
And("release.is_draft = ?", false).
And("release.created_unix >= ?", fromTime.Unix())
}