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fix creating concurrent migration file #708

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fix creating concurrent migration file #708

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7 changes: 6 additions & 1 deletion create.go
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Original file line number Diff line number Diff line change
Expand Up @@ -58,10 +58,15 @@ func CreateWithTemplate(db *sql.DB, dir string, tmpl *template.Template, name, m
}

path := filepath.Join(dir, filename)
if _, err := os.Stat(path); !os.IsNotExist(err) {
_, err := os.Stat(path)
if err != nil && !os.IsNotExist(err) {
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I suggest replacing this with the code mentioned in the documentation to os.IsNotExist function
!errors.Is(err, fs.ErrNotExist)

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Also this code could be simplidfied in fort of fast failure:

_, err := os.Stat(path)
if err == nil {
	return fmt.Errorf("failed to create migration file: %w", os.ErrExist)
}

if !errors.Is(err, fs.ErrNotExist){
        return fmt.Errorf("failed to create migration file: %w", err)
}

return fmt.Errorf("failed to create migration file: %w", err)
}

if err == nil {
return fmt.Errorf("failed to create migration file: %w", os.ErrExist)
}

f, err := os.Create(path)
if err != nil {
return fmt.Errorf("failed to create migration file: %w", err)
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