/
parse_port.go
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/
parse_port.go
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// Copyright 2020 Antrea Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package util
import (
"fmt"
"strconv"
"strings"
)
// ParsePortsRange parses port range and checks if valid.
func ParsePortsRange(portRangeConfig string) (start, end int, err error) {
portsRange := strings.Split(portRangeConfig, "-")
if len(portsRange) != 2 {
return 0, 0, fmt.Errorf("wrong port range format: %s", portRangeConfig)
}
if start, err = strconv.Atoi(portsRange[0]); err != nil {
return 0, 0, err
}
if end, err = strconv.Atoi(portsRange[1]); err != nil {
return 0, 0, err
}
if end <= start {
return 0, 0, fmt.Errorf("invalid port range: %s", portRangeConfig)
}
return start, end, nil
}