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bgppeer.go
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bgppeer.go
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// Copyright (c) 2017 Tigera, Inc. All rights reserved.
// 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 converters
import (
"fmt"
log "github.com/sirupsen/logrus"
"k8s.io/apimachinery/pkg/apis/meta/v1"
apiv1 "github.com/projectcalico/libcalico-go/lib/apis/v1"
"github.com/projectcalico/libcalico-go/lib/apis/v1/unversioned"
apiv3 "github.com/projectcalico/libcalico-go/lib/apis/v3"
"github.com/projectcalico/libcalico-go/lib/backend/model"
"github.com/projectcalico/libcalico-go/lib/errors"
"github.com/projectcalico/libcalico-go/lib/scope"
)
// BGPPeer implements the Converter interface.
type BGPPeer struct{}
// APIV1ToBackendV1 converts v1 BGPPeer API to v1 BGPPeer KVPair.
func (bp BGPPeer) APIV1ToBackendV1(rIn unversioned.Resource) (*model.KVPair, error) {
ap, ok := rIn.(*apiv1.BGPPeer)
if !ok {
return nil, fmt.Errorf("Conversion to BGPPeer is not possible with %v", rIn)
}
if len(ap.Metadata.PeerIP.IP) == 0 {
return nil, fmt.Errorf("no PeerIP is set, invalid BGPPeer: %v", rIn)
}
k, err := bp.convertMetadataToKey(ap.Metadata)
if err != nil {
return nil, err
}
d := model.KVPair{
Key: k,
Value: &model.BGPPeer{
PeerIP: ap.Metadata.PeerIP,
ASNum: ap.Spec.ASNumber,
},
}
log.WithFields(log.Fields{
"APIV1": rIn,
"KVPair": d,
}).Debug("Converted BGPPeer")
return &d, nil
}
func (_ BGPPeer) convertMetadataToKey(bpm apiv1.BGPPeerMetadata) (model.Key, error) {
if bpm.Scope == scope.Global {
if bpm.Node != "" {
return nil, fmt.Errorf("With Global scope having a Node is invalid: %v", bpm)
}
return model.GlobalBGPPeerKey{
PeerIP: bpm.PeerIP,
}, nil
} else if bpm.Scope == scope.Node {
if bpm.Node == "" {
return nil, fmt.Errorf("With Node scope a Node must be defined: %v", bpm)
}
return model.NodeBGPPeerKey{
PeerIP: bpm.PeerIP,
Nodename: bpm.Node,
}, nil
} else {
return nil, errors.ErrorInsufficientIdentifiers{
Name: "scope",
}
}
}
// BackendV1ToAPIV3 converts v1 BGPPeer KVPair to v3 API.
func (bp BGPPeer) BackendV1ToAPIV3(kvp *model.KVPair) (Resource, error) {
peer, ok := kvp.Value.(*model.BGPPeer)
if !ok {
return nil, fmt.Errorf("value is not a valid BGPPeer resource Value: %v", kvp.Value)
}
r := apiv3.NewBGPPeer()
r.Spec = apiv3.BGPPeerSpec{
PeerIP: peer.PeerIP.String(),
ASNumber: peer.ASNum,
}
switch kvp.Key.(type) {
case model.GlobalBGPPeerKey:
r.ObjectMeta = v1.ObjectMeta{Name: convertIpToName(peer.PeerIP.IP)}
case model.NodeBGPPeerKey:
nk := kvp.Key.(model.NodeBGPPeerKey)
// Node names are normalized but we don't add any qualifying hashes (so we just use
// the normalizeName function to convert).
n := ConvertNodeName(nk.Nodename)
r.Spec.Node = n
r.ObjectMeta = v1.ObjectMeta{Name: n + "." + convertIpToName(peer.PeerIP.IP)}
default:
return nil, fmt.Errorf("Invalid key for BGPPeer: %v", kvp.Key)
}
log.WithFields(log.Fields{
"KVPair": *kvp,
"APIV3": r,
}).Debug("Converted BGPPeer")
return r, nil
}