refactor: refactor DHCP logic (#298)

This commit is contained in:
naison
2024-07-19 22:07:35 +08:00
committed by GitHub
parent 78de74bf08
commit bc7d205695
37 changed files with 952 additions and 1131 deletions

View File

@@ -1,66 +0,0 @@
package webhook
import (
"context"
"net"
"sync"
log "github.com/sirupsen/logrus"
"k8s.io/client-go/kubernetes"
"k8s.io/kubectl/pkg/cmd/util"
"github.com/wencaiwulue/kubevpn/v2/pkg/handler"
"github.com/wencaiwulue/kubevpn/v2/pkg/webhook/rpc"
)
type dhcpServer struct {
rpc.UnimplementedDHCPServer
sync.Mutex
f util.Factory
clientset *kubernetes.Clientset
}
func (d *dhcpServer) RentIP(ctx context.Context, req *rpc.RentIPRequest) (*rpc.RentIPResponse, error) {
d.Lock()
defer d.Unlock()
log.Infof("handling rent ip request, pod name: %s, ns: %s", req.PodName, req.PodNamespace)
cmi := d.clientset.CoreV1().ConfigMaps(req.PodNamespace)
dhcp := handler.NewDHCPManager(cmi, req.PodNamespace)
v4, v6, err := dhcp.RentIPRandom(ctx)
if err != nil {
log.Errorf("rent ip failed, err: %v", err)
return nil, err
}
// todo patch annotation
resp := &rpc.RentIPResponse{
IPv4CIDR: v4.String(),
IPv6CIDR: v6.String(),
}
return resp, nil
}
func (d *dhcpServer) ReleaseIP(ctx context.Context, req *rpc.ReleaseIPRequest) (*rpc.ReleaseIPResponse, error) {
d.Lock()
defer d.Unlock()
log.Infof("handling release ip request, pod name: %s, ns: %s, ipv4: %s, ipv6: %s", req.PodName, req.PodNamespace, req.IPv4CIDR, req.IPv6CIDR)
var ips []net.IP
for _, s := range []string{req.IPv4CIDR, req.IPv6CIDR} {
ip, _, err := net.ParseCIDR(s)
if err != nil {
log.Errorf("ip is invailed, ip: %s, err: %v", ip.String(), err)
continue
}
ips = append(ips, ip)
}
cmi := d.clientset.CoreV1().ConfigMaps(req.PodNamespace)
dhcp := handler.NewDHCPManager(cmi, req.PodNamespace)
if err := dhcp.ReleaseIP(context.Background(), ips...); err != nil {
log.Errorf("release ip failed, err: %v", err)
return nil, err
}
return &rpc.ReleaseIPResponse{}, nil
}

View File

@@ -18,7 +18,8 @@ import (
"github.com/wencaiwulue/kubevpn/v2/pkg/config"
"github.com/wencaiwulue/kubevpn/v2/pkg/daemon"
"github.com/wencaiwulue/kubevpn/v2/pkg/webhook/rpc"
"github.com/wencaiwulue/kubevpn/v2/pkg/dhcp"
"github.com/wencaiwulue/kubevpn/v2/pkg/dhcp/rpc"
)
func Main(f util.Factory) error {
@@ -67,7 +68,7 @@ func Main(f util.Factory) error {
handler := daemon.CreateDowngradingHandler(grpcServer, http.HandlerFunc(http.DefaultServeMux.ServeHTTP))
downgradingServer.Handler = h2c.NewHandler(handler, &h2Server)
defer downgradingServer.Close()
rpc.RegisterDHCPServer(grpcServer, &dhcpServer{f: f, clientset: clientset})
rpc.RegisterDHCPServer(grpcServer, dhcp.NewServer(clientset))
return downgradingServer.ListenAndServeTLS("", "")
}

View File

@@ -17,7 +17,7 @@ import (
"k8s.io/utils/ptr"
"github.com/wencaiwulue/kubevpn/v2/pkg/config"
"github.com/wencaiwulue/kubevpn/v2/pkg/handler"
"github.com/wencaiwulue/kubevpn/v2/pkg/dhcp"
"github.com/wencaiwulue/kubevpn/v2/pkg/util"
)
@@ -81,7 +81,7 @@ func (h *admissionReviewHandler) handleCreate(ar v1.AdmissionReview) *v1.Admissi
h.Lock()
defer h.Unlock()
cmi := h.clientset.CoreV1().ConfigMaps(ar.Request.Namespace)
dhcp := handler.NewDHCPManager(cmi, ar.Request.Namespace)
manager := dhcp.NewDHCPManager(cmi, ar.Request.Namespace)
var ips []net.IP
for k := 0; k < len(container.Env); k++ {
envVar := container.Env[k]
@@ -91,11 +91,11 @@ func (h *admissionReviewHandler) handleCreate(ar v1.AdmissionReview) *v1.Admissi
}
}
}
_ = dhcp.ReleaseIP(context.Background(), ips...)
_ = manager.ReleaseIP(context.Background(), ips...)
// 3) rent new ip
var v4, v6 *net.IPNet
v4, v6, err = dhcp.RentIPRandom(context.Background())
v4, v6, err = manager.RentIP(context.Background())
if err != nil {
log.Errorf("rent ip random failed, err: %v", err)
return toV1AdmissionResponse(err)
@@ -181,7 +181,7 @@ func (h *admissionReviewHandler) handleDelete(ar v1.AdmissionReview) *v1.Admissi
h.Lock()
defer h.Unlock()
cmi := h.clientset.CoreV1().ConfigMaps(ar.Request.Namespace)
err := handler.NewDHCPManager(cmi, ar.Request.Namespace).ReleaseIP(context.Background(), ips...)
err := dhcp.NewDHCPManager(cmi, ar.Request.Namespace).ReleaseIP(context.Background(), ips...)
if err != nil {
log.Errorf("release ip to dhcp err: %v, ips: %v", err, ips)
} else {

View File

@@ -1,392 +0,0 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.33.0
// protoc v3.21.2
// source: dhcpserver.proto
package rpc
import (
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
reflect "reflect"
sync "sync"
)
const (
// Verify that this generated code is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
// Verify that runtime/protoimpl is sufficiently up-to-date.
_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
)
type RentIPRequest struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
PodName string `protobuf:"bytes,1,opt,name=PodName,proto3" json:"PodName,omitempty"`
PodNamespace string `protobuf:"bytes,2,opt,name=PodNamespace,proto3" json:"PodNamespace,omitempty"`
}
func (x *RentIPRequest) Reset() {
*x = RentIPRequest{}
if protoimpl.UnsafeEnabled {
mi := &file_dhcpserver_proto_msgTypes[0]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *RentIPRequest) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*RentIPRequest) ProtoMessage() {}
func (x *RentIPRequest) ProtoReflect() protoreflect.Message {
mi := &file_dhcpserver_proto_msgTypes[0]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use RentIPRequest.ProtoReflect.Descriptor instead.
func (*RentIPRequest) Descriptor() ([]byte, []int) {
return file_dhcpserver_proto_rawDescGZIP(), []int{0}
}
func (x *RentIPRequest) GetPodName() string {
if x != nil {
return x.PodName
}
return ""
}
func (x *RentIPRequest) GetPodNamespace() string {
if x != nil {
return x.PodNamespace
}
return ""
}
type RentIPResponse struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
IPv4CIDR string `protobuf:"bytes,1,opt,name=IPv4CIDR,proto3" json:"IPv4CIDR,omitempty"`
IPv6CIDR string `protobuf:"bytes,2,opt,name=IPv6CIDR,proto3" json:"IPv6CIDR,omitempty"`
}
func (x *RentIPResponse) Reset() {
*x = RentIPResponse{}
if protoimpl.UnsafeEnabled {
mi := &file_dhcpserver_proto_msgTypes[1]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *RentIPResponse) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*RentIPResponse) ProtoMessage() {}
func (x *RentIPResponse) ProtoReflect() protoreflect.Message {
mi := &file_dhcpserver_proto_msgTypes[1]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use RentIPResponse.ProtoReflect.Descriptor instead.
func (*RentIPResponse) Descriptor() ([]byte, []int) {
return file_dhcpserver_proto_rawDescGZIP(), []int{1}
}
func (x *RentIPResponse) GetIPv4CIDR() string {
if x != nil {
return x.IPv4CIDR
}
return ""
}
func (x *RentIPResponse) GetIPv6CIDR() string {
if x != nil {
return x.IPv6CIDR
}
return ""
}
type ReleaseIPRequest struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
PodName string `protobuf:"bytes,1,opt,name=PodName,proto3" json:"PodName,omitempty"`
PodNamespace string `protobuf:"bytes,2,opt,name=PodNamespace,proto3" json:"PodNamespace,omitempty"`
IPv4CIDR string `protobuf:"bytes,3,opt,name=IPv4CIDR,proto3" json:"IPv4CIDR,omitempty"`
IPv6CIDR string `protobuf:"bytes,4,opt,name=IPv6CIDR,proto3" json:"IPv6CIDR,omitempty"`
}
func (x *ReleaseIPRequest) Reset() {
*x = ReleaseIPRequest{}
if protoimpl.UnsafeEnabled {
mi := &file_dhcpserver_proto_msgTypes[2]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *ReleaseIPRequest) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*ReleaseIPRequest) ProtoMessage() {}
func (x *ReleaseIPRequest) ProtoReflect() protoreflect.Message {
mi := &file_dhcpserver_proto_msgTypes[2]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use ReleaseIPRequest.ProtoReflect.Descriptor instead.
func (*ReleaseIPRequest) Descriptor() ([]byte, []int) {
return file_dhcpserver_proto_rawDescGZIP(), []int{2}
}
func (x *ReleaseIPRequest) GetPodName() string {
if x != nil {
return x.PodName
}
return ""
}
func (x *ReleaseIPRequest) GetPodNamespace() string {
if x != nil {
return x.PodNamespace
}
return ""
}
func (x *ReleaseIPRequest) GetIPv4CIDR() string {
if x != nil {
return x.IPv4CIDR
}
return ""
}
func (x *ReleaseIPRequest) GetIPv6CIDR() string {
if x != nil {
return x.IPv6CIDR
}
return ""
}
type ReleaseIPResponse struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Message string `protobuf:"bytes,1,opt,name=message,proto3" json:"message,omitempty"`
}
func (x *ReleaseIPResponse) Reset() {
*x = ReleaseIPResponse{}
if protoimpl.UnsafeEnabled {
mi := &file_dhcpserver_proto_msgTypes[3]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
}
func (x *ReleaseIPResponse) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*ReleaseIPResponse) ProtoMessage() {}
func (x *ReleaseIPResponse) ProtoReflect() protoreflect.Message {
mi := &file_dhcpserver_proto_msgTypes[3]
if protoimpl.UnsafeEnabled && x != nil {
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
if ms.LoadMessageInfo() == nil {
ms.StoreMessageInfo(mi)
}
return ms
}
return mi.MessageOf(x)
}
// Deprecated: Use ReleaseIPResponse.ProtoReflect.Descriptor instead.
func (*ReleaseIPResponse) Descriptor() ([]byte, []int) {
return file_dhcpserver_proto_rawDescGZIP(), []int{3}
}
func (x *ReleaseIPResponse) GetMessage() string {
if x != nil {
return x.Message
}
return ""
}
var File_dhcpserver_proto protoreflect.FileDescriptor
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}
var (
file_dhcpserver_proto_rawDescOnce sync.Once
file_dhcpserver_proto_rawDescData = file_dhcpserver_proto_rawDesc
)
func file_dhcpserver_proto_rawDescGZIP() []byte {
file_dhcpserver_proto_rawDescOnce.Do(func() {
file_dhcpserver_proto_rawDescData = protoimpl.X.CompressGZIP(file_dhcpserver_proto_rawDescData)
})
return file_dhcpserver_proto_rawDescData
}
var file_dhcpserver_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
var file_dhcpserver_proto_goTypes = []interface{}{
(*RentIPRequest)(nil), // 0: rpc.RentIPRequest
(*RentIPResponse)(nil), // 1: rpc.RentIPResponse
(*ReleaseIPRequest)(nil), // 2: rpc.ReleaseIPRequest
(*ReleaseIPResponse)(nil), // 3: rpc.ReleaseIPResponse
}
var file_dhcpserver_proto_depIdxs = []int32{
0, // 0: rpc.DHCP.RentIP:input_type -> rpc.RentIPRequest
2, // 1: rpc.DHCP.ReleaseIP:input_type -> rpc.ReleaseIPRequest
1, // 2: rpc.DHCP.RentIP:output_type -> rpc.RentIPResponse
3, // 3: rpc.DHCP.ReleaseIP:output_type -> rpc.ReleaseIPResponse
2, // [2:4] is the sub-list for method output_type
0, // [0:2] is the sub-list for method input_type
0, // [0:0] is the sub-list for extension type_name
0, // [0:0] is the sub-list for extension extendee
0, // [0:0] is the sub-list for field type_name
}
func init() { file_dhcpserver_proto_init() }
func file_dhcpserver_proto_init() {
if File_dhcpserver_proto != nil {
return
}
if !protoimpl.UnsafeEnabled {
file_dhcpserver_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*RentIPRequest); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
file_dhcpserver_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*RentIPResponse); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
file_dhcpserver_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*ReleaseIPRequest); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
file_dhcpserver_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
switch v := v.(*ReleaseIPResponse); i {
case 0:
return &v.state
case 1:
return &v.sizeCache
case 2:
return &v.unknownFields
default:
return nil
}
}
}
type x struct{}
out := protoimpl.TypeBuilder{
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_dhcpserver_proto_rawDesc,
NumEnums: 0,
NumMessages: 4,
NumExtensions: 0,
NumServices: 1,
},
GoTypes: file_dhcpserver_proto_goTypes,
DependencyIndexes: file_dhcpserver_proto_depIdxs,
MessageInfos: file_dhcpserver_proto_msgTypes,
}.Build()
File_dhcpserver_proto = out.File
file_dhcpserver_proto_rawDesc = nil
file_dhcpserver_proto_goTypes = nil
file_dhcpserver_proto_depIdxs = nil
}

View File

@@ -1,30 +0,0 @@
syntax = "proto3";
option go_package = ".;rpc";
package rpc;
service DHCP {
rpc RentIP (RentIPRequest) returns (RentIPResponse) {}
rpc ReleaseIP (ReleaseIPRequest) returns (ReleaseIPResponse) {}
}
message RentIPRequest {
string PodName = 1;
string PodNamespace = 2;
}
message RentIPResponse {
string IPv4CIDR = 1;
string IPv6CIDR = 2;
}
message ReleaseIPRequest {
string PodName = 1;
string PodNamespace = 2;
string IPv4CIDR = 3;
string IPv6CIDR = 4;
}
message ReleaseIPResponse {
string message = 1;
}

View File

@@ -1,146 +0,0 @@
// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
// versions:
// - protoc-gen-go-grpc v1.3.0
// - protoc v3.21.2
// source: dhcpserver.proto
package rpc
import (
context "context"
grpc "google.golang.org/grpc"
codes "google.golang.org/grpc/codes"
status "google.golang.org/grpc/status"
)
// This is a compile-time assertion to ensure that this generated file
// is compatible with the grpc package it is being compiled against.
// Requires gRPC-Go v1.32.0 or later.
const _ = grpc.SupportPackageIsVersion7
const (
DHCP_RentIP_FullMethodName = "/rpc.DHCP/RentIP"
DHCP_ReleaseIP_FullMethodName = "/rpc.DHCP/ReleaseIP"
)
// DHCPClient is the client API for DHCP service.
//
// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
type DHCPClient interface {
RentIP(ctx context.Context, in *RentIPRequest, opts ...grpc.CallOption) (*RentIPResponse, error)
ReleaseIP(ctx context.Context, in *ReleaseIPRequest, opts ...grpc.CallOption) (*ReleaseIPResponse, error)
}
type dHCPClient struct {
cc grpc.ClientConnInterface
}
func NewDHCPClient(cc grpc.ClientConnInterface) DHCPClient {
return &dHCPClient{cc}
}
func (c *dHCPClient) RentIP(ctx context.Context, in *RentIPRequest, opts ...grpc.CallOption) (*RentIPResponse, error) {
out := new(RentIPResponse)
err := c.cc.Invoke(ctx, DHCP_RentIP_FullMethodName, in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
func (c *dHCPClient) ReleaseIP(ctx context.Context, in *ReleaseIPRequest, opts ...grpc.CallOption) (*ReleaseIPResponse, error) {
out := new(ReleaseIPResponse)
err := c.cc.Invoke(ctx, DHCP_ReleaseIP_FullMethodName, in, out, opts...)
if err != nil {
return nil, err
}
return out, nil
}
// DHCPServer is the server API for DHCP service.
// All implementations must embed UnimplementedDHCPServer
// for forward compatibility
type DHCPServer interface {
RentIP(context.Context, *RentIPRequest) (*RentIPResponse, error)
ReleaseIP(context.Context, *ReleaseIPRequest) (*ReleaseIPResponse, error)
mustEmbedUnimplementedDHCPServer()
}
// UnimplementedDHCPServer must be embedded to have forward compatible implementations.
type UnimplementedDHCPServer struct {
}
func (UnimplementedDHCPServer) RentIP(context.Context, *RentIPRequest) (*RentIPResponse, error) {
return nil, status.Errorf(codes.Unimplemented, "method RentIP not implemented")
}
func (UnimplementedDHCPServer) ReleaseIP(context.Context, *ReleaseIPRequest) (*ReleaseIPResponse, error) {
return nil, status.Errorf(codes.Unimplemented, "method ReleaseIP not implemented")
}
func (UnimplementedDHCPServer) mustEmbedUnimplementedDHCPServer() {}
// UnsafeDHCPServer may be embedded to opt out of forward compatibility for this service.
// Use of this interface is not recommended, as added methods to DHCPServer will
// result in compilation errors.
type UnsafeDHCPServer interface {
mustEmbedUnimplementedDHCPServer()
}
func RegisterDHCPServer(s grpc.ServiceRegistrar, srv DHCPServer) {
s.RegisterService(&DHCP_ServiceDesc, srv)
}
func _DHCP_RentIP_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(RentIPRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(DHCPServer).RentIP(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: DHCP_RentIP_FullMethodName,
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(DHCPServer).RentIP(ctx, req.(*RentIPRequest))
}
return interceptor(ctx, in, info, handler)
}
func _DHCP_ReleaseIP_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(ReleaseIPRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(DHCPServer).ReleaseIP(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: DHCP_ReleaseIP_FullMethodName,
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(DHCPServer).ReleaseIP(ctx, req.(*ReleaseIPRequest))
}
return interceptor(ctx, in, info, handler)
}
// DHCP_ServiceDesc is the grpc.ServiceDesc for DHCP service.
// It's only intended for direct use with grpc.RegisterService,
// and not to be introspected or modified (even as a copy)
var DHCP_ServiceDesc = grpc.ServiceDesc{
ServiceName: "rpc.DHCP",
HandlerType: (*DHCPServer)(nil),
Methods: []grpc.MethodDesc{
{
MethodName: "RentIP",
Handler: _DHCP_RentIP_Handler,
},
{
MethodName: "ReleaseIP",
Handler: _DHCP_ReleaseIP_Handler,
},
},
Streams: []grpc.StreamDesc{},
Metadata: "dhcpserver.proto",
}

View File

@@ -1,3 +0,0 @@
package rpc
//go:generate protoc --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative dhcpserver.proto