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Merge pull request #19 from XenitAB/errgroup
Use errgroup and context
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,47 @@ | ||
| package helper | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "os" | ||
| "os/signal" | ||
| "syscall" | ||
| "time" | ||
|
|
||
| "golang.org/x/sync/errgroup" | ||
| ) | ||
|
|
||
| func NewErrGroupAndContext() (*errgroup.Group, context.Context, context.CancelFunc) { | ||
| ctx := context.Background() | ||
| ctx, cancel := context.WithCancel(ctx) | ||
| g, ctx := errgroup.WithContext(ctx) | ||
| return g, ctx, cancel | ||
| } | ||
|
|
||
| func WaitForErrGroup(g *errgroup.Group) error { | ||
| err := g.Wait() | ||
| if err != nil { | ||
| return fmt.Errorf("error groups error: %w", err) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func NewShutdownTimeoutContext() (context.Context, context.CancelFunc) { | ||
| return context.WithTimeout(context.Background(), 2*time.Second) | ||
| } | ||
|
|
||
| func WaitForStop(stopChan chan os.Signal, ctx context.Context) string { | ||
| select { | ||
| case sig := <-stopChan: | ||
| return fmt.Sprintf("os.Signal (%s)", sig) | ||
| case <-ctx.Done(): | ||
| return "context" | ||
| } | ||
| } | ||
|
|
||
| func NewStopChannel() chan os.Signal { | ||
| stopChan := make(chan os.Signal, 2) | ||
| signal.Notify(stopChan, os.Interrupt, syscall.SIGINT, syscall.SIGTERM, syscall.SIGPIPE) | ||
| return stopChan | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| package helper | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
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| "golang.org/x/sync/errgroup" | ||
| ) | ||
|
|
||
| type ServiceStarter interface { | ||
| Start(ctx context.Context) error | ||
| } | ||
|
|
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| type ServiceStopper interface { | ||
| Stop(ctx context.Context) error | ||
| } | ||
|
|
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| func StartService(ctx context.Context, g *errgroup.Group, s ServiceStarter) { | ||
| g.Go(func() error { | ||
| return s.Start(ctx) | ||
| }) | ||
| } | ||
|
|
||
| func StopService(ctx context.Context, g *errgroup.Group, s ServiceStopper) { | ||
| g.Go(func() error { | ||
| return s.Stop(ctx) | ||
| }) | ||
| } |
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