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feat(dns-server): check system prerequisites when init/add machine: DNS port is not in use by another DNS server

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This commit is contained in:
Pavel Sviderski
2025-04-30 20:46:10 +10:00
parent 6e1165ec57
commit 769f5e47c3
6 changed files with 366 additions and 180 deletions
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internal/machine/api/pb/machine_grpc.pb.go
+43 -5
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@@ -20,17 +20,19 @@ import (
const _ = grpc.SupportPackageIsVersion9
const (
Machine_InitCluster_FullMethodName = "/api.Machine/InitCluster"
Machine_JoinCluster_FullMethodName = "/api.Machine/JoinCluster"
Machine_Token_FullMethodName = "/api.Machine/Token"
Machine_Inspect_FullMethodName = "/api.Machine/Inspect"
Machine_InspectService_FullMethodName = "/api.Machine/InspectService"
Machine_CheckPrerequisites_FullMethodName = "/api.Machine/CheckPrerequisites"
Machine_InitCluster_FullMethodName = "/api.Machine/InitCluster"
Machine_JoinCluster_FullMethodName = "/api.Machine/JoinCluster"
Machine_Token_FullMethodName = "/api.Machine/Token"
Machine_Inspect_FullMethodName = "/api.Machine/Inspect"
Machine_InspectService_FullMethodName = "/api.Machine/InspectService"
)
// MachineClient is the client API for Machine 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 MachineClient interface {
CheckPrerequisites(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*CheckPrerequisitesResponse, error)
InitCluster(ctx context.Context, in *InitClusterRequest, opts ...grpc.CallOption) (*InitClusterResponse, error)
JoinCluster(ctx context.Context, in *JoinClusterRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
Token(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*TokenResponse, error)
@@ -46,6 +48,16 @@ func NewMachineClient(cc grpc.ClientConnInterface) MachineClient {
return &machineClient{cc}
}
func (c *machineClient) CheckPrerequisites(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*CheckPrerequisitesResponse, error) {
cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
out := new(CheckPrerequisitesResponse)
err := c.cc.Invoke(ctx, Machine_CheckPrerequisites_FullMethodName, in, out, cOpts...)
if err != nil {
return nil, err
}
return out, nil
}
func (c *machineClient) InitCluster(ctx context.Context, in *InitClusterRequest, opts ...grpc.CallOption) (*InitClusterResponse, error) {
cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
out := new(InitClusterResponse)
@@ -100,6 +112,7 @@ func (c *machineClient) InspectService(ctx context.Context, in *InspectServiceRe
// All implementations must embed UnimplementedMachineServer
// for forward compatibility.
type MachineServer interface {
CheckPrerequisites(context.Context, *emptypb.Empty) (*CheckPrerequisitesResponse, error)
InitCluster(context.Context, *InitClusterRequest) (*InitClusterResponse, error)
JoinCluster(context.Context, *JoinClusterRequest) (*emptypb.Empty, error)
Token(context.Context, *emptypb.Empty) (*TokenResponse, error)
@@ -115,6 +128,9 @@ type MachineServer interface {
// pointer dereference when methods are called.
type UnimplementedMachineServer struct{}
func (UnimplementedMachineServer) CheckPrerequisites(context.Context, *emptypb.Empty) (*CheckPrerequisitesResponse, error) {
return nil, status.Errorf(codes.Unimplemented, "method CheckPrerequisites not implemented")
}
func (UnimplementedMachineServer) InitCluster(context.Context, *InitClusterRequest) (*InitClusterResponse, error) {
return nil, status.Errorf(codes.Unimplemented, "method InitCluster not implemented")
}
@@ -151,6 +167,24 @@ func RegisterMachineServer(s grpc.ServiceRegistrar, srv MachineServer) {
s.RegisterService(&Machine_ServiceDesc, srv)
}
func _Machine_CheckPrerequisites_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(emptypb.Empty)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(MachineServer).CheckPrerequisites(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: Machine_CheckPrerequisites_FullMethodName,
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(MachineServer).CheckPrerequisites(ctx, req.(*emptypb.Empty))
}
return interceptor(ctx, in, info, handler)
}
func _Machine_InitCluster_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(InitClusterRequest)
if err := dec(in); err != nil {
@@ -248,6 +282,10 @@ var Machine_ServiceDesc = grpc.ServiceDesc{
ServiceName: "api.Machine",
HandlerType: (*MachineServer)(nil),
Methods: []grpc.MethodDesc{
{
MethodName: "CheckPrerequisites",
Handler: _Machine_CheckPrerequisites_Handler,
},
{
MethodName: "InitCluster",
Handler: _Machine_InitCluster_Handler,