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45b7fd1d94
Also separates logic so that it can be tested more easily, and adds unit tests to make sure there is no regression. Fixes #1083
31 lines
1.1 KiB
Go
31 lines
1.1 KiB
Go
package netpol
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import (
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"fmt"
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"regexp"
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"strconv"
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)
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func validateNodePortRange(nodePortOption string) (string, error) {
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nodePortValidator := regexp.MustCompile(`^([0-9]+)[:-]([0-9]+)$`)
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if matched := nodePortValidator.MatchString(nodePortOption); !matched {
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return "", fmt.Errorf("failed to parse node port range given: '%s' please see specification in help text", nodePortOption)
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}
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matches := nodePortValidator.FindStringSubmatch(nodePortOption)
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if len(matches) != 3 {
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return "", fmt.Errorf("could not parse port number from range given: '%s'", nodePortOption)
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}
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port1, err := strconv.ParseUint(matches[1], 10, 16)
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if err != nil {
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return "", fmt.Errorf("could not parse first port number from range given: '%s'", nodePortOption)
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}
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port2, err := strconv.ParseUint(matches[2], 10, 16)
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if err != nil {
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return "", fmt.Errorf("could not parse second port number from range given: '%s'", nodePortOption)
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}
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if port1 >= port2 {
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return "", fmt.Errorf("port 1 is greater than or equal to port 2 in range given: '%s'", nodePortOption)
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}
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return fmt.Sprintf("%d:%d", port1, port2), nil
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}
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