forked from cerc-io/ipld-eth-server
38 lines
1.1 KiB
Go
38 lines
1.1 KiB
Go
// Copyright (c) 2016 Arista Networks, Inc.
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// Use of this source code is governed by the Apache License 2.0
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// that can be found in the COPYING file.
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package netns
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import (
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"fmt"
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"strings"
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)
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// ParseAddress takes in an address string, parsing out the address
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// and an optional VRF name. It returns the namespace corresponding to the VRF.
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// The expected form is [<vrf-name>/]address:port. However, ParseAddress
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// will not actually check to see if the VRF name or address are valid.
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// Presumably, when those values are used later, they will fail if they
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// are malformed
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func ParseAddress(address string) (nsName string, addr string, err error) {
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split := strings.Split(address, "/")
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if l := len(split); l == 1 {
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addr = split[0]
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} else if l == 2 {
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nsName = VRFToNetNS(split[0])
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addr = split[1]
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} else {
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err = fmt.Errorf("Could not parse out a <vrf-name>/address for %s", address)
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}
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return
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}
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// VRFToNetNS converts a VRF name to network namespace's name corresponding to that VRF.
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func VRFToNetNS(vrf string) string {
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if vrf != "" && vrf != "default" && !strings.HasPrefix(vrf, "ns-") {
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vrf = "ns-" + vrf
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}
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return vrf
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}
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