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feat: add sync errgroup to goutil package
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| package goutil | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
||
| "golang.org/x/sync/errgroup" | ||
| ) | ||
|
|
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| // ErrGroup is a collection of goroutines working on subtasks that | ||
| // are part of the same overall task. | ||
| // | ||
| // Refers: | ||
| // | ||
| // https://github.com/neilotoole/errgroup | ||
| // https://github.com/fatih/semgroup | ||
| type ErrGroup struct { | ||
| *errgroup.Group | ||
| } | ||
|
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| // NewCtxErrGroup instance | ||
| func NewCtxErrGroup(ctx context.Context, limit ...int) (*ErrGroup, context.Context) { | ||
| egg, ctx1 := errgroup.WithContext(ctx) | ||
| if len(limit) > 0 && limit[0] > 0 { | ||
| egg.SetLimit(limit[0]) | ||
| } | ||
|
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| eg := &ErrGroup{Group: egg} | ||
| return eg, ctx1 | ||
| } | ||
|
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| // NewErrGroup instance | ||
| func NewErrGroup(limit ...int) *ErrGroup { | ||
| eg := &ErrGroup{Group: new(errgroup.Group)} | ||
|
|
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| if len(limit) > 0 && limit[0] > 0 { | ||
| eg.SetLimit(limit[0]) | ||
| } | ||
| return eg | ||
| } | ||
|
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| // Add one or more handler at once | ||
| func (g *ErrGroup) Add(handlers ...func() error) { | ||
| for _, handler := range handlers { | ||
| g.Go(handler) | ||
| } | ||
| } |