perf(cron): index jobs by id for lower overhead
This commit is contained in:
nnlgsakib
parent
83e24e8ceb
commit
3c637889d6
2 changed files with 130 additions and 53 deletions
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@ -61,6 +61,7 @@ type JobHandler func(job *CronJob) (string, error)
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type CronService struct {
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storePath string
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store *CronStore
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jobIndex map[string]int
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onJob JobHandler
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mu sync.RWMutex
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running bool
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@ -179,13 +180,9 @@ func (cs *CronService) executeJobByID(jobID string) {
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cs.mu.RLock()
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var callbackJob *CronJob
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for i := range cs.store.Jobs {
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job := &cs.store.Jobs[i]
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if job.ID == jobID {
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jobCopy := *job
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callbackJob = &jobCopy
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break
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}
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if idx, ok := cs.jobIndex[jobID]; ok && idx >= 0 && idx < len(cs.store.Jobs) && cs.store.Jobs[idx].ID == jobID {
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jobCopy := cs.store.Jobs[idx]
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callbackJob = &jobCopy
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}
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cs.mu.RUnlock()
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@ -209,14 +206,8 @@ func (cs *CronService) executeJobByID(jobID string) {
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cs.mu.Lock()
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defer cs.mu.Unlock()
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var job *CronJob
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for i := range cs.store.Jobs {
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if cs.store.Jobs[i].ID == jobID {
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job = &cs.store.Jobs[i]
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break
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}
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}
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if job == nil {
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job, ok := cs.getJobUnsafe(jobID)
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if !ok {
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log.Printf("[cron] job %s disappeared before state update", jobID)
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return
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}
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@ -338,6 +329,7 @@ func (cs *CronService) loadStore() error {
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Version: 1,
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Jobs: []CronJob{},
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}
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cs.jobIndex = make(map[string]int)
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data, err := os.ReadFile(cs.storePath)
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if err != nil {
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@ -347,7 +339,34 @@ func (cs *CronService) loadStore() error {
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return err
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}
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return json.Unmarshal(data, cs.store)
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if err := json.Unmarshal(data, cs.store); err != nil {
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return err
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}
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cs.rebuildJobIndexUnsafe()
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return nil
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}
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func (cs *CronService) rebuildJobIndexUnsafe() {
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cs.jobIndex = make(map[string]int, len(cs.store.Jobs))
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for i := range cs.store.Jobs {
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cs.jobIndex[cs.store.Jobs[i].ID] = i
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}
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}
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func (cs *CronService) getJobUnsafe(jobID string) (*CronJob, bool) {
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idx, ok := cs.jobIndex[jobID]
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if !ok || idx < 0 || idx >= len(cs.store.Jobs) {
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return nil, false
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}
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if cs.store.Jobs[idx].ID != jobID {
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cs.rebuildJobIndexUnsafe()
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idx, ok = cs.jobIndex[jobID]
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if !ok || idx < 0 || idx >= len(cs.store.Jobs) {
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return nil, false
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}
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}
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return &cs.store.Jobs[idx], true
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}
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func (cs *CronService) saveStoreUnsafe() error {
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@ -396,6 +415,7 @@ func (cs *CronService) AddJob(
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}
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cs.store.Jobs = append(cs.store.Jobs, job)
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cs.jobIndex[job.ID] = len(cs.store.Jobs) - 1
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if err := cs.saveStoreUnsafe(); err != nil {
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return nil, err
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}
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@ -407,14 +427,14 @@ func (cs *CronService) UpdateJob(job *CronJob) error {
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cs.mu.Lock()
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defer cs.mu.Unlock()
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for i := range cs.store.Jobs {
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if cs.store.Jobs[i].ID == job.ID {
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cs.store.Jobs[i] = *job
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cs.store.Jobs[i].UpdatedAtMS = time.Now().UnixMilli()
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return cs.saveStoreUnsafe()
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}
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storedJob, ok := cs.getJobUnsafe(job.ID)
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if !ok {
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return fmt.Errorf("job not found")
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}
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return fmt.Errorf("job not found")
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*storedJob = *job
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storedJob.UpdatedAtMS = time.Now().UnixMilli()
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return cs.saveStoreUnsafe()
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}
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func (cs *CronService) RemoveJob(jobID string) bool {
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@ -425,49 +445,53 @@ func (cs *CronService) RemoveJob(jobID string) bool {
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}
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func (cs *CronService) removeJobUnsafe(jobID string) bool {
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before := len(cs.store.Jobs)
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var jobs []CronJob
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for _, job := range cs.store.Jobs {
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if job.ID != jobID {
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jobs = append(jobs, job)
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}
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idx, ok := cs.jobIndex[jobID]
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if !ok || idx < 0 || idx >= len(cs.store.Jobs) {
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return false
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}
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cs.store.Jobs = jobs
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removed := len(cs.store.Jobs) < before
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if removed {
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if err := cs.saveStoreUnsafe(); err != nil {
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log.Printf("[cron] failed to save store after remove: %v", err)
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if cs.store.Jobs[idx].ID != jobID {
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cs.rebuildJobIndexUnsafe()
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idx, ok = cs.jobIndex[jobID]
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if !ok || idx < 0 || idx >= len(cs.store.Jobs) {
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return false
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}
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}
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return removed
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copy(cs.store.Jobs[idx:], cs.store.Jobs[idx+1:])
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cs.store.Jobs = cs.store.Jobs[:len(cs.store.Jobs)-1]
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cs.rebuildJobIndexUnsafe()
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if err := cs.saveStoreUnsafe(); err != nil {
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log.Printf("[cron] failed to save store after remove: %v", err)
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}
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return true
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}
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func (cs *CronService) EnableJob(jobID string, enabled bool) *CronJob {
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cs.mu.Lock()
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defer cs.mu.Unlock()
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for i := range cs.store.Jobs {
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job := &cs.store.Jobs[i]
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if job.ID == jobID {
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job.Enabled = enabled
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job.UpdatedAtMS = time.Now().UnixMilli()
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if enabled {
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job.State.NextRunAtMS = cs.computeNextRun(&job.Schedule, time.Now().UnixMilli())
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} else {
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job.State.NextRunAtMS = nil
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}
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if err := cs.saveStoreUnsafe(); err != nil {
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log.Printf("[cron] failed to save store after enable: %v", err)
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}
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return job
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}
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job, ok := cs.getJobUnsafe(jobID)
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if !ok {
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return nil
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}
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return nil
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job.Enabled = enabled
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job.UpdatedAtMS = time.Now().UnixMilli()
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if enabled {
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job.State.NextRunAtMS = cs.computeNextRun(&job.Schedule, time.Now().UnixMilli())
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} else {
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job.State.NextRunAtMS = nil
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}
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if err := cs.saveStoreUnsafe(); err != nil {
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log.Printf("[cron] failed to save store after enable: %v", err)
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}
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return job
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}
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func (cs *CronService) ListJobs(includeDisabled bool) []CronJob {
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@ -36,3 +36,56 @@ func TestSaveStore_FilePermissions(t *testing.T) {
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func int64Ptr(v int64) *int64 {
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return &v
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}
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func TestCronServiceIndexedOperationsRemainCompatible(t *testing.T) {
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tmpDir := t.TempDir()
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storePath := filepath.Join(tmpDir, "cron", "jobs.json")
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cs := NewCronService(storePath, nil)
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job1, err := cs.AddJob("job-1", CronSchedule{Kind: "every", EveryMS: int64Ptr(60000)}, "hello", false, "cli", "direct")
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if err != nil {
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t.Fatalf("AddJob job1 failed: %v", err)
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}
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job2, err := cs.AddJob("job-2", CronSchedule{Kind: "every", EveryMS: int64Ptr(120000)}, "world", false, "cli", "direct")
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if err != nil {
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t.Fatalf("AddJob job2 failed: %v", err)
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}
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job2.Name = "job-2-updated"
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if err := cs.UpdateJob(job2); err != nil {
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t.Fatalf("UpdateJob failed: %v", err)
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}
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disabled := cs.EnableJob(job1.ID, false)
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if disabled == nil {
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t.Fatal("EnableJob returned nil for existing job")
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}
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if disabled.Enabled {
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t.Fatal("expected job to be disabled")
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}
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if !cs.RemoveJob(job1.ID) {
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t.Fatal("RemoveJob failed for existing job")
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}
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reloaded := NewCronService(storePath, nil)
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jobs := reloaded.ListJobs(true)
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if len(jobs) != 1 {
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t.Fatalf("expected 1 job after reload, got %d", len(jobs))
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}
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if jobs[0].ID != job2.ID {
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t.Fatalf("expected remaining job %s, got %s", job2.ID, jobs[0].ID)
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}
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if jobs[0].Name != "job-2-updated" {
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t.Fatalf("expected updated job name to persist, got %q", jobs[0].Name)
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}
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enabled := reloaded.EnableJob(job2.ID, true)
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if enabled == nil {
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t.Fatal("EnableJob on reloaded service returned nil")
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}
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if !enabled.Enabled {
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t.Fatal("expected reloaded job to be enabled")
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}
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}
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