init csi-driver-nvmf

Signed-off-by: zhouenhua <zhouenhua@bytedance.com>

pkg/nvmf/nvmf_utils.go

@@ -0,0 +1,84 @@
+package nvmf
+
+import (
+	"csi-driver-nvmf/pkg/utils"
+	"context"
+	"fmt"
+	"github.com/kubernetes-csi/csi-lib-utils/protosanitizer"
+	log "github.com/sirupsen/logrus"
+	"google.golang.org/grpc"
+	"k8s.io/klog"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+func waitForPathToExist(devicePath string, maxRetries, intervalSeconds int, deviceTransport string) (bool, error) {
+	var err error
+	for i := 0; i < maxRetries; i++ {
+		err = nil
+		if deviceTransport == "tcp" {
+			exist := utils.IsFileExisting(devicePath)
+			if exist {
+				return true, nil
+			}
+		} else {
+			return false, fmt.Errorf("connect only support tcp")
+		}
+
+		if i == maxRetries-1 {
+			break
+		}
+		time.Sleep(time.Second * time.Duration(intervalSeconds))
+	}
+	return false, err
+}
+
+func GetDeviceNameByVolumeID(volumeID string) (deviceName string, err error) {
+	volumeLinkPath := strings.Join([]string{"/dev/disk/by-id/nvmf-uuid", volumeID}, ".")
+	stat, err := os.Lstat(volumeLinkPath)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return "", fmt.Errorf("volumeID link path %q not found", volumeLinkPath)
+		} else {
+			return "", fmt.Errorf("error getting stat of %q: %v", volumeLinkPath, err)
+		}
+	}
+
+	if stat.Mode()&os.ModeSymlink != os.ModeSymlink {
+		klog.Errorf("volumeID link file %q found, but was not a symlink", volumeLinkPath)
+		return "", fmt.Errorf("volumeID link file %q found, but was not a symlink", volumeLinkPath)
+	}
+
+	resolved, err := filepath.EvalSymlinks(volumeLinkPath)
+	if err != nil {
+		return "", fmt.Errorf("error reading target of symlink %q: %v", volumeLinkPath, err)
+	}
+	if !strings.HasPrefix(resolved, "/dev") {
+		return "", fmt.Errorf("resolved symlink for %q was unexpected: %q", volumeLinkPath, resolved)
+	}
+	log.Infof("Device Link Info: %s link to %s", volumeLinkPath, resolved)
+	tmp := strings.Split(resolved, "/")
+	return tmp[len(tmp)-1], nil
+}
+
+func parseDeviceToControllerPath(deviceName string) string {
+	nvmfControllerPrefix := "/sys/class/block"
+	index := strings.LastIndex(deviceName, "n")
+	parsed := deviceName[:index] + "c0" + deviceName[index:]
+	scanPath := filepath.Join(nvmfControllerPrefix, parsed, "device/rescan_controller")
+	return scanPath
+}
+
+func logGRPC(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
+	klog.Infof("GRPC call: %s", info.FullMethod)
+	klog.Infof("GRPC request: %s", protosanitizer.StripSecrets(req))
+	resp, err := handler(ctx, req)
+	if err != nil {
+		klog.Errorf("GRPC error: %v", err)
+	} else {
+		klog.Infof("GRPC response: %s", protosanitizer.StripSecrets(resp))
+	}
+	return resp, err
+}