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main.go
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main.go
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package main
import (
"bytes"
"flag"
"github.com/container-storage-interface/spec/lib/go/csi"
"github.com/masterzen/winrm"
"github.com/nijave/hyperv-csi/pkg"
"golang.org/x/net/context"
"google.golang.org/grpc"
"k8s.io/klog/v2"
"net"
"net/url"
"os"
"strconv"
"strings"
"time"
)
func createWinrmClient(caFilePath *string) *winrm.Client {
parsed, err := url.Parse(os.Getenv("WINRM_HOST"))
if err != nil {
klog.Error(err)
klog.Warning("couldn't parse WINRM_HOST environment variable")
}
var port int
if parsed.Port() != "" {
port, err = strconv.Atoi(parsed.Port())
if err != nil {
klog.Fatalf("couldn't parse port from WINRM_HOST: %v", err)
}
} else {
port = 5985
}
var caCert []byte
if caFilePath != nil {
klog.InfoS("using non-default ca file", "cacert", *caFilePath)
caCert, err = os.ReadFile(*caFilePath)
if err != nil {
klog.Fatalf("couldn't read ca file %v", err)
}
}
endpoint := winrm.NewEndpoint(parsed.Hostname(), port, parsed.Scheme == "https", false, caCert, nil, nil, 0)
params := winrm.DefaultParameters
params.TransportDecorator = func() winrm.Transporter { return &winrm.ClientNTLM{} }
winrmClient, err := winrm.NewClientWithParameters(endpoint, os.Getenv("WINRM_USER"), os.Getenv("WINRM_PASSWORD"), params)
if err != nil {
klog.Error(err)
klog.Fatalf("could not create winrm client for %s", endpoint.Host)
}
ctx, _ := context.WithTimeout(context.Background(), 5*time.Second)
output := new(bytes.Buffer)
exit, err := winrmClient.RunWithContext(ctx, "echo ok", output, output)
if exit != 0 || err != nil {
klog.Warning(output.String())
klog.Fatalf("failed exit %d, %v", exit, err)
} else {
klog.InfoS("winrm check", "status", strings.Trim(output.String(), " \n\r\t"))
}
return winrmClient
}
func initController(grpcServer *grpc.Server) {
var caFilePath *string
if caFilePathOverride := os.Getenv("WINRM_CA_FILE_PATH"); len(caFilePathOverride) > 0 {
caFilePath = &caFilePathOverride
}
// TODO put this in a constant or something
volumePath := "V:\\Hyper-V\\Virtual Hard Disks"
if newVolumePath := os.Getenv("HV_VOLUME_PATH"); len(newVolumePath) > 0 {
volumePath = newVolumePath
}
hypervCsiController := &pkg.HypervCsiController{
WinrmClient: createWinrmClient(caFilePath),
VolumePath: volumePath,
}
csi.RegisterControllerServer(grpcServer, hypervCsiController)
csi.RegisterIdentityServer(grpcServer, hypervCsiController)
}
func initDriver(grpcServer *grpc.Server) {
hypervCsiController := &pkg.HypervCsiController{}
csi.RegisterIdentityServer(grpcServer, hypervCsiController)
hypervCsiDriver := &pkg.HypervCsiDriver{}
csi.RegisterNodeServer(grpcServer, hypervCsiDriver)
}
func main() {
var grpcService string
klog.InitFlags(nil)
flag.StringVar(&grpcService, "grpc-service", "controller", "Which gRPC services should run")
flag.Parse()
socket := "/run/csi/socket"
if envSocket := os.Getenv("CSI_ADDRESS"); len(envSocket) > 0 {
socket = envSocket
klog.InfoS("using non-default socket", "socket", socket)
}
err := os.Remove(socket)
if err != nil {
klog.Infof("error removing existing socket %v", err)
}
listen, err := net.Listen("unix", socket)
if err != nil {
klog.Fatalf("failed to listen: %v", err)
}
defer listen.Close()
grpcServer := grpc.NewServer()
switch grpcService {
case "controller":
initController(grpcServer)
case "driver":
initDriver(grpcServer)
default:
listen.Close()
klog.Fatal("invalid grpc-service specified")
}
klog.Infof("server %s listening at %v", grpcService, listen.Addr())
if err := grpcServer.Serve(listen); err != nil {
klog.Fatalf("failed to serve: %v", err)
}
}