forked from projectcalico/libcalico-go
/
bgppeer.go
186 lines (156 loc) · 5.33 KB
/
bgppeer.go
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// Copyright (c) 2016 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 model
import (
"fmt"
"regexp"
"reflect"
"github.com/projectcalico/libcalico-go/lib/errors"
"github.com/projectcalico/libcalico-go/lib/net"
"github.com/projectcalico/libcalico-go/lib/numorstring"
log "github.com/sirupsen/logrus"
)
var (
matchGlobalBGPPeer = regexp.MustCompile("^/?calico/bgp/v1/global/peer_v./([^/]+)$")
matchHostBGPPeer = regexp.MustCompile("^/?calico/bgp/v1/host/([^/]+)/peer_v./([^/]+)$")
typeBGPPeer = reflect.TypeOf(BGPPeer{})
)
type NodeBGPPeerKey struct {
Nodename string `json:"-" validate:"omitempty"`
PeerIP net.IP `json:"-" validate:"required"`
}
func (key NodeBGPPeerKey) defaultPath() (string, error) {
if key.PeerIP.IP == nil {
return "", errors.ErrorInsufficientIdentifiers{Name: "peerIP"}
}
if key.Nodename == "" {
return "", errors.ErrorInsufficientIdentifiers{Name: "node"}
}
e := fmt.Sprintf("/calico/bgp/v1/host/%s/peer_v%d/%s",
key.Nodename, key.PeerIP.Version(), key.PeerIP)
return e, nil
}
func (key NodeBGPPeerKey) defaultDeletePath() (string, error) {
return key.defaultPath()
}
func (key NodeBGPPeerKey) defaultDeleteParentPaths() ([]string, error) {
return nil, nil
}
func (key NodeBGPPeerKey) valueType() (reflect.Type, error) {
return typeBGPPeer, nil
}
func (key NodeBGPPeerKey) String() string {
return fmt.Sprintf("BGPPeer(node=%s, ip=%s)", key.Nodename, key.PeerIP)
}
type NodeBGPPeerListOptions struct {
Nodename string
PeerIP net.IP
}
func (options NodeBGPPeerListOptions) defaultPathRoot() string {
if options.Nodename == "" {
return "/calico/bgp/v1/host"
} else if options.PeerIP.IP == nil {
return fmt.Sprintf("/calico/bgp/v1/host/%s",
options.Nodename)
} else {
return fmt.Sprintf("/calico/bgp/v1/host/%s/peer_v%d/%s",
options.Nodename, options.PeerIP.Version(), options.PeerIP)
}
}
func (options NodeBGPPeerListOptions) KeyFromDefaultPath(path string) Key {
log.Debugf("Get BGPPeer key from %s", path)
nodename := ""
peerIP := net.IP{}
ekeyb := []byte(path)
if r := matchHostBGPPeer.FindAllSubmatch(ekeyb, -1); len(r) == 1 {
nodename = string(r[0][1])
if err := peerIP.UnmarshalText(r[0][2]); err != nil {
log.WithError(err).WithField("PeerIP", r[0][2]).Error("Error unmarshalling GlobalBGPPeer IP address")
return nil
}
} else {
log.Debugf("%s didn't match regex", path)
return nil
}
if options.PeerIP.IP != nil && !options.PeerIP.Equal(peerIP.IP) {
log.Debugf("Didn't match peerIP %s != %s", options.PeerIP.String(), peerIP.String())
return nil
}
if options.Nodename != "" && nodename != options.Nodename {
log.Debugf("Didn't match hostname %s != %s", options.Nodename, nodename)
return nil
}
return NodeBGPPeerKey{PeerIP: peerIP, Nodename: nodename}
}
type GlobalBGPPeerKey struct {
PeerIP net.IP `json:"-" validate:"required"`
}
func (key GlobalBGPPeerKey) defaultPath() (string, error) {
if key.PeerIP.IP == nil {
return "", errors.ErrorInsufficientIdentifiers{Name: "peerIP"}
}
e := fmt.Sprintf("/calico/bgp/v1/global/peer_v%d/%s",
key.PeerIP.Version(), key.PeerIP)
return e, nil
}
func (key GlobalBGPPeerKey) defaultDeletePath() (string, error) {
return key.defaultPath()
}
func (key GlobalBGPPeerKey) defaultDeleteParentPaths() ([]string, error) {
return nil, nil
}
func (key GlobalBGPPeerKey) valueType() (reflect.Type, error) {
return typeBGPPeer, nil
}
func (key GlobalBGPPeerKey) String() string {
return fmt.Sprintf("BGPPeer(global, ip=%s)", key.PeerIP)
}
type GlobalBGPPeerListOptions struct {
PeerIP net.IP
}
func (options GlobalBGPPeerListOptions) defaultPathRoot() string {
if options.PeerIP.IP == nil {
return "/calico/bgp/v1/global"
} else {
return fmt.Sprintf("/calico/bgp/v1/global/peer_v%d/%s",
options.PeerIP.Version(), options.PeerIP)
}
}
func (options GlobalBGPPeerListOptions) KeyFromDefaultPath(path string) Key {
log.Debugf("Get BGPPeer key from %s", path)
peerIP := net.IP{}
ekeyb := []byte(path)
if r := matchGlobalBGPPeer.FindAllSubmatch(ekeyb, -1); len(r) == 1 {
if err := peerIP.UnmarshalText(r[0][1]); err != nil {
log.WithError(err).WithField("PeerIP", r[0][1]).Error("Error unmarshalling GlobalBGPPeer IP address")
return nil
}
} else {
log.Debugf("%s didn't match regex", path)
return nil
}
if options.PeerIP.IP != nil && !options.PeerIP.Equal(peerIP.IP) {
log.Debugf("Didn't match peerIP %s != %s", options.PeerIP.String(), peerIP.String())
return nil
}
return GlobalBGPPeerKey{PeerIP: peerIP}
}
type BGPPeer struct {
// PeerIP is the IP address of the BGP peer.
PeerIP net.IP `json:"ip"`
// ASNum is the AS number of the peer. Note that we write out the
// value as a string in to the backend, because confd templating
// converts large uints to float e notation which breaks the BIRD
// configuration.
ASNum numorstring.ASNumber `json:"as_num,string"`
}