forked from netsec-ethz/scion
-
Notifications
You must be signed in to change notification settings - Fork 0
/
types.go
50 lines (44 loc) · 1.55 KB
/
types.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
// Copyright 2017 ETH Zurich
// Copyright 2019 ETH Zurich, Anapaya Systems
//
// 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 topology
import (
"strings"
"github.com/scionproto/scion/go/lib/common"
"github.com/scionproto/scion/go/proto"
)
const (
// CoreLinkName indicates a link going to a neighboring core AS.
CoreLinkName = "CORE"
// ParentLinkName indicates a link to a parent AS.
ParentLinkName = "PARENT"
// ChildLinkName indicates a link to a child AS.
ChildLinkName = "CHILD"
// PeerLinkName indicates a link to a neighboring peer AS.
PeerLinkName = "PEER"
)
// LinkTypeFromString parses the link type.
func LinkTypeFromString(s string) (proto.LinkType, error) {
linkType := proto.LinkTypeFromString(strings.ToLower(s))
if linkType == 0 || linkType == proto.LinkType_unset {
return proto.LinkType_unset, common.NewBasicError("Unknown link type", nil, "type", s)
}
return linkType, nil
}
// Provider provides a topology.
type Provider interface {
// Get returns a topology. The returned topology is guaranteed to not be
// nil.
Get() *Topo
}