mirror of
https://github.com/go-gitea/gitea.git
synced 2024-11-30 07:54:52 +01:00
a2cfcdb91a
The LastCommitCache code is a little complex and there is unnecessary duplication between the gogit and nogogit variants. This PR adds the LastCommitCache as a field to the git.Repository and pre-creates it in the ReferencesGit helpers etc. There has been some simplification and unification of the variant code. Signed-off-by: Andrew Thornton <art27@cantab.net>
116 lines
3.2 KiB
Go
116 lines
3.2 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
|
|
// Use of this source code is governed by a MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package git
|
|
|
|
import (
|
|
"crypto/sha256"
|
|
"fmt"
|
|
|
|
"code.gitea.io/gitea/modules/log"
|
|
"code.gitea.io/gitea/modules/setting"
|
|
)
|
|
|
|
// Cache represents a caching interface
|
|
type Cache interface {
|
|
// Put puts value into cache with key and expire time.
|
|
Put(key string, val interface{}, timeout int64) error
|
|
// Get gets cached value by given key.
|
|
Get(key string) interface{}
|
|
}
|
|
|
|
func getCacheKey(repoPath, commitID, entryPath string) string {
|
|
hashBytes := sha256.Sum256([]byte(fmt.Sprintf("%s:%s:%s", repoPath, commitID, entryPath)))
|
|
return fmt.Sprintf("last_commit:%x", hashBytes)
|
|
}
|
|
|
|
// LastCommitCache represents a cache to store last commit
|
|
type LastCommitCache struct {
|
|
repoPath string
|
|
ttl func() int64
|
|
repo *Repository
|
|
commitCache map[string]*Commit
|
|
cache Cache
|
|
}
|
|
|
|
// NewLastCommitCache creates a new last commit cache for repo
|
|
func NewLastCommitCache(count int64, repoPath string, gitRepo *Repository, cache Cache) *LastCommitCache {
|
|
if cache == nil {
|
|
return nil
|
|
}
|
|
if !setting.CacheService.LastCommit.Enabled || count < setting.CacheService.LastCommit.CommitsCount {
|
|
return nil
|
|
}
|
|
|
|
return &LastCommitCache{
|
|
repoPath: repoPath,
|
|
repo: gitRepo,
|
|
ttl: setting.LastCommitCacheTTLSeconds,
|
|
cache: cache,
|
|
}
|
|
}
|
|
|
|
// Put put the last commit id with commit and entry path
|
|
func (c *LastCommitCache) Put(ref, entryPath, commitID string) error {
|
|
if c == nil || c.cache == nil {
|
|
return nil
|
|
}
|
|
log.Debug("LastCommitCache save: [%s:%s:%s]", ref, entryPath, commitID)
|
|
return c.cache.Put(getCacheKey(c.repoPath, ref, entryPath), commitID, c.ttl())
|
|
}
|
|
|
|
// Get gets the last commit information by commit id and entry path
|
|
func (c *LastCommitCache) Get(ref, entryPath string) (*Commit, error) {
|
|
if c == nil || c.cache == nil {
|
|
return nil, nil
|
|
}
|
|
|
|
commitID, ok := c.cache.Get(getCacheKey(c.repoPath, ref, entryPath)).(string)
|
|
if !ok || commitID == "" {
|
|
return nil, nil
|
|
}
|
|
|
|
log.Debug("LastCommitCache hit level 1: [%s:%s:%s]", ref, entryPath, commitID)
|
|
if c.commitCache != nil {
|
|
if commit, ok := c.commitCache[commitID]; ok {
|
|
log.Debug("LastCommitCache hit level 2: [%s:%s:%s]", ref, entryPath, commitID)
|
|
return commit, nil
|
|
}
|
|
}
|
|
|
|
commit, err := c.repo.GetCommit(commitID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if c.commitCache == nil {
|
|
c.commitCache = make(map[string]*Commit)
|
|
}
|
|
c.commitCache[commitID] = commit
|
|
return commit, nil
|
|
}
|
|
|
|
// GetCommitByPath gets the last commit for the entry in the provided commit
|
|
func (c *LastCommitCache) GetCommitByPath(commitID, entryPath string) (*Commit, error) {
|
|
sha1, err := NewIDFromString(commitID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
lastCommit, err := c.Get(sha1.String(), entryPath)
|
|
if err != nil || lastCommit != nil {
|
|
return lastCommit, err
|
|
}
|
|
|
|
lastCommit, err = c.repo.getCommitByPathWithID(sha1, entryPath)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if err := c.Put(commitID, entryPath, lastCommit.ID.String()); err != nil {
|
|
log.Error("Unable to cache %s as the last commit for %q in %s %s. Error %v", lastCommit.ID.String(), entryPath, commitID, c.repoPath, err)
|
|
}
|
|
|
|
return lastCommit, nil
|
|
}
|