csi: add rbd ls option

This commit adds the ability to list RBD images.

Signed-off-by: Oded Viner <[email protected]>

.github/workflows/go-test-config/action.yaml

@@ -116,6 +116,12 @@ runs:
         tests/github-action-helper.sh create_stale_subvolume
         subVol=$(kubectl rook-ceph ${NS_OPT} subvolume ls --stale | awk '{print $2}' | grep csi-vol)
         kubectl rook_ceph ${NS_OPT} subvolume delete myfs $subVol
+      
+    - name: Get rbd list
+      shell: bash --noprofile --norc -eo pipefail -x {0}
+      run: |
+        set -ex
+        kubectl rook-ceph ${NS_OPT} rbd ls
 
     - name: Get mon endpoints
       shell: bash --noprofile --norc -eo pipefail -x {0}

cmd/commands/rbd.go

@@ -17,6 +17,8 @@ limitations under the License.
 package command
 
 import (
+	rbd "github.com/rook/kubectl-rook-ceph/pkg/rbd"
+
 	"github.com/rook/kubectl-rook-ceph/pkg/exec"
 	"github.com/rook/kubectl-rook-ceph/pkg/logging"
 	"github.com/spf13/cobra"
@@ -38,3 +40,16 @@ var RbdCmd = &cobra.Command{
 		}
 	},
 }
+
+var listCmdRbd = &cobra.Command{
+	Use:   "ls",
+	Short: "Print the list of rbd volumes.",
+	Run: func(cmd *cobra.Command, args []string) {
+		ctx := cmd.Context()
+		rbd.ListRbdVolumes(ctx, clientSets, operatorNamespace, cephClusterNamespace)
+	},
+}
+
+func init() {
+	RbdCmd.AddCommand(listCmdRbd)
+}

pkg/rbd/rbd.go

@@ -0,0 +1,52 @@
+package rbd
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"strings"
+	"text/tabwriter"
+
+	"github.com/rook/kubectl-rook-ceph/pkg/exec"
+	"github.com/rook/kubectl-rook-ceph/pkg/k8sutil"
+	"github.com/rook/kubectl-rook-ceph/pkg/logging"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// List retrieves and displays the Ceph block pools and their associated images.
+func ListRbdVolumes(ctx context.Context, clientsets *k8sutil.Clientsets, operatorNamespace string, clusterNamespace string) {
+	blockPoolList, err := clientsets.Rook.CephV1().CephBlockPools(clusterNamespace).List(ctx, v1.ListOptions{})
+	if err != nil {
+		logging.Fatal(fmt.Errorf("failed to list CephBlockPools: %w", err))
+	}
+	var blockPoolNames map[string]string
+	blockPoolNames = make(map[string]string)
+
+	for _, blockPool := range blockPoolList.Items {
+		blockPoolNames[blockPool.Name] = "--"
+	}
+
+	cmd := "rbd"
+	for poolName, _ := range blockPoolNames {
+		args := []string{"ls", "--pool=" + poolName}
+		list, err := exec.RunCommandInOperatorPod(ctx, clientsets, cmd, args, operatorNamespace, clusterNamespace, true)
+		if err == nil && len(list) > 0 {
+			blockPoolNames[poolName] = strings.ReplaceAll(list, "\n", "")
+		}
+	}
+	PrintBlockPoolNames(blockPoolNames)
+}
+
+// PrintBlockPoolNames takes a map of block pool names to image names and prints them in a tabular format.
+func PrintBlockPoolNames(blockPoolNames map[string]string) {
+	writer := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0)
+	defer writer.Flush()
+	// Print header with column names
+	logging.Info(fmt.Sprintf("poolName\timageName\t"))
+	logging.Info(fmt.Sprintf("--------\t---------\t"))
+
+	// Print each row from the map
+	for poolName, imageName := range blockPoolNames {
+		logging.Info(fmt.Sprintf("%s\t%s\t", poolName, imageName))
+	}
+}