fix: huge storage account list usage

fix golint

fix mount point

Author: andyzhangx

pkg/blob/blob.go

@@ -604,3 +604,40 @@ func (d *Driver) getSubnetResourceID() string {
 
 	return fmt.Sprintf(subnetTemplate, subsID, rg, d.cloud.VnetName, d.cloud.SubnetName)
 }
+
+// appendDefaultMountOptions return mount options combined with mountOptions and defaultMountOptions
+func appendDefaultMountOptions(mountOptions []string, tmpPath, containerName string) []string {
+	var defaultMountOptions = map[string]string{
+		"--pre-mount-validate": "true",
+		"--use-https":          "true",
+		"--tmp-path":           tmpPath,
+		"--container-name":     containerName,
+		// prevent billing charges on mounting
+		"--cancel-list-on-mount-seconds": "60",
+	}
+
+	// stores the mount options already included in mountOptions
+	included := make(map[string]bool)
+
+	for _, mountOption := range mountOptions {
+		for k := range defaultMountOptions {
+			if strings.HasPrefix(mountOption, k) {
+				included[k] = true
+			}
+		}
+	}
+
+	allMountOptions := mountOptions
+
+	for k, v := range defaultMountOptions {
+		if _, isIncluded := included[k]; !isIncluded {
+			if v != "" {
+				allMountOptions = append(allMountOptions, fmt.Sprintf("%s=%s", k, v))
+			} else {
+				allMountOptions = append(allMountOptions, k)
+			}
+		}
+	}
+
+	return allMountOptions
+}

pkg/blob/blob_test.go

@@ -23,6 +23,7 @@ import (
 	"io/ioutil"
 	"os"
 	"reflect"
+	"sort"
 	"testing"
 
 	"github.com/Azure/azure-sdk-for-go/services/storage/mgmt/2021-02-01/storage"
@@ -773,3 +774,47 @@ func TestSetAzureCredentials(t *testing.T) {
 		}
 	}
 }
+
+func TestAppendDefaultMountOptions(t *testing.T) {
+	tests := []struct {
+		options       []string
+		tmpPath       string
+		containerName string
+		expected      []string
+	}{
+		{
+			options:       []string{"targetPath"},
+			tmpPath:       "/tmp",
+			containerName: "containerName",
+			expected: []string{"--cancel-list-on-mount-seconds=60",
+				"--container-name=containerName",
+				"--pre-mount-validate=true",
+				"--tmp-path=/tmp",
+				"--use-https=true",
+				"targetPath",
+			},
+		},
+		{
+			options:       []string{"targetPath", "--cancel-list-on-mount-seconds=0", "--pre-mount-validate=false"},
+			tmpPath:       "/tmp",
+			containerName: "containerName",
+			expected: []string{"--cancel-list-on-mount-seconds=0",
+				"--container-name=containerName",
+				"--pre-mount-validate=false",
+				"--tmp-path=/tmp",
+				"--use-https=true",
+				"targetPath",
+			},
+		},
+	}
+
+	for _, test := range tests {
+		result := appendDefaultMountOptions(test.options, test.tmpPath, test.containerName)
+		sort.Strings(result)
+		sort.Strings(test.expected)
+
+		if !reflect.DeepEqual(result, test.expected) {
+			t.Errorf("input: %q, appendDefaultMountOptions result: %q, expected: %q", test.options, result, test.expected)
+		}
+	}
+}

pkg/blob/nodeserver.go

@@ -267,14 +267,15 @@ func (d *Driver) NodeStageVolume(ctx context.Context, req *csi.NodeStageVolumeRe
 	}
 
 	// Get mountOptions that the volume will be formatted and mounted with
-	mountOptions := util.JoinMountOptions(mountFlags, []string{"--use-https=true"})
+	mountOptions := mountFlags
 	if ephemeralVol {
 		mountOptions = util.JoinMountOptions(mountOptions, strings.Split(ephemeralVolMountOptions, ","))
 	}
-
 	// set different tmp-path with time info
 	tmpPath := fmt.Sprintf("%s/%s#%d", "/mnt", volumeID, time.Now().Unix())
-	args := fmt.Sprintf("%s --pre-mount-validate=true --tmp-path=%s --container-name=%s", targetPath, tmpPath, containerName)
+	mountOptions = appendDefaultMountOptions(mountOptions, tmpPath, containerName)
+
+	args := targetPath
 	for _, opt := range mountOptions {
 		args = args + " " + opt
 	}