60 lines
1.2 KiB
Go
60 lines
1.2 KiB
Go
package scheduler
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import (
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"context"
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"log"
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"time"
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)
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type Job struct {
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Name string
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Interval time.Duration
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Run func(ctx context.Context)
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}
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type Scheduler struct {
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jobs []Job
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}
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// New 会丢掉间隔非正的任务：time.NewTicker 对非正间隔直接 panic，这类任务应由调用方单独启动。
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func New(jobs ...Job) *Scheduler {
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valid := make([]Job, 0, len(jobs))
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for _, job := range jobs {
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if job.Interval <= 0 {
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log.Printf("scheduler: 任务 %s 间隔为 %v，已跳过", job.Name, job.Interval)
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continue
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}
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valid = append(valid, job)
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}
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return &Scheduler{jobs: valid}
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}
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func (s *Scheduler) Start(ctx context.Context) {
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for _, job := range s.jobs {
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go s.runJob(ctx, job)
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}
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}
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func (s *Scheduler) runJob(ctx context.Context, job Job) {
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ticker := time.NewTicker(job.Interval)
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defer ticker.Stop()
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// 单个任务 panic 不能带走整个进程：包一层 recover，记录后继续下一轮
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run := func() {
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defer func() {
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if r := recover(); r != nil {
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log.Printf("scheduler: 任务 %s panic: %v", job.Name, r)
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}
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}()
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job.Run(ctx)
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}
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run()
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for {
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select {
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case <-ctx.Done():
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return
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case <-ticker.C:
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run()
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}
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}
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}
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