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natplugin.go
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natplugin.go
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// Copyright (c) 2018 Cisco and/or its affiliates.
//
// 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.
//go:generate descriptor-adapter --descriptor-name NAT44Global --value-type *vpp_nat.Nat44Global --import "github.com/ligato/vpp-agent/api/models/vpp/nat" --output-dir "descriptor"
//go:generate descriptor-adapter --descriptor-name NAT44Interface --value-type *vpp_nat.Nat44Global_Interface --import "github.com/ligato/vpp-agent/api/models/vpp/nat" --output-dir "descriptor"
//go:generate descriptor-adapter --descriptor-name NAT44Address --value-type *vpp_nat.Nat44Global_Address --import "github.com/ligato/vpp-agent/api/models/vpp/nat" --output-dir "descriptor"
//go:generate descriptor-adapter --descriptor-name DNAT44 --value-type *vpp_nat.DNat44 --import "github.com/ligato/vpp-agent/api/models/vpp/nat" --output-dir "descriptor"
package natplugin
import (
govppapi "git.fd.io/govpp.git/api"
"github.com/pkg/errors"
"github.com/ligato/cn-infra/health/statuscheck"
"github.com/ligato/cn-infra/infra"
"github.com/ligato/vpp-agent/plugins/govppmux"
kvs "github.com/ligato/vpp-agent/plugins/kvscheduler/api"
"github.com/ligato/vpp-agent/plugins/vpp/ifplugin"
"github.com/ligato/vpp-agent/plugins/vpp/natplugin/descriptor"
"github.com/ligato/vpp-agent/plugins/vpp/natplugin/vppcalls"
_ "github.com/ligato/vpp-agent/plugins/vpp/natplugin/vppcalls/vpp1904"
_ "github.com/ligato/vpp-agent/plugins/vpp/natplugin/vppcalls/vpp1908"
_ "github.com/ligato/vpp-agent/plugins/vpp/natplugin/vppcalls/vpp2001_324"
_ "github.com/ligato/vpp-agent/plugins/vpp/natplugin/vppcalls/vpp2001_379"
)
// NATPlugin configures VPP NAT.
type NATPlugin struct {
Deps
// GoVPP
vppCh govppapi.Channel
// handlers
natHandler vppcalls.NatVppAPI
}
// Deps lists dependencies of the NAT plugin.
type Deps struct {
infra.PluginDeps
KVScheduler kvs.KVScheduler
GoVppmux govppmux.API
IfPlugin ifplugin.API
StatusCheck statuscheck.PluginStatusWriter // optional
}
// Init registers NAT-related descriptors.
func (p *NATPlugin) Init() error {
var err error
// GoVPP channels
if p.vppCh, err = p.GoVppmux.NewAPIChannel(); err != nil {
return errors.Errorf("failed to create GoVPP API channel: %v", err)
}
// init NAT handler
p.natHandler = vppcalls.CompatibleNatVppHandler(p.vppCh, p.IfPlugin.GetInterfaceIndex(), p.IfPlugin.GetDHCPIndex(), p.Log)
if p.natHandler == nil {
return errors.New("natHandler is not available")
}
// init and register descriptors
nat44GlobalDescriptor := descriptor.NewNAT44GlobalDescriptor(p.natHandler, p.Log)
nat44IfaceDescriptor := descriptor.NewNAT44InterfaceDescriptor(p.natHandler, p.Log)
nat44AddrDescriptor := descriptor.NewNAT44AddressDescriptor(p.natHandler, p.Log)
dnat44Descriptor := descriptor.NewDNAT44Descriptor(p.natHandler, p.Log)
err = p.KVScheduler.RegisterKVDescriptor(
nat44GlobalDescriptor,
nat44IfaceDescriptor,
nat44AddrDescriptor,
dnat44Descriptor,
)
if err != nil {
return err
}
return nil
}
// AfterInit registers plugin with StatusCheck.
func (p *NATPlugin) AfterInit() error {
if p.StatusCheck != nil {
p.StatusCheck.Register(p.PluginName, nil)
}
return nil
}