[#917] engine: Allow to detach shards

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

cmd/frostfs-cli/modules/control/detach_shards.go

@@ -0,0 +1,49 @@
+package control
+
+import (
+	rawclient "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/rpc/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/key"
+	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/control"
+	"github.com/spf13/cobra"
+)
+
+var shardsDetachCmd = &cobra.Command{
+	Use:   "detach",
+	Short: "Detach and close the shards",
+	Long:  "Detach and close the shards",
+	Run:   shardsDetach,
+}
+
+func shardsDetach(cmd *cobra.Command, _ []string) {
+	pk := key.Get(cmd)
+
+	req := &control.DetachShardsRequest{
+		Body: &control.DetachShardsRequest_Body{
+			Shard_ID: getShardIDListFromIDFlag(cmd, false),
+		},
+	}
+
+	signRequest(cmd, pk, req)
+
+	cli := getClient(cmd, pk)
+
+	var resp *control.DetachShardsResponse
+	var err error
+	err = cli.ExecRaw(func(client *rawclient.Client) error {
+		resp, err = control.DetachShards(client, req)
+		return err
+	})
+	commonCmd.ExitOnErr(cmd, "rpc error: %w", err)
+
+	verifyResponse(cmd, resp.GetSignature(), resp.GetBody())
+
+	cmd.Println("Shard mode update request successfully sent.")
+}
+
+func initControlShardsDetachCmd() {
+	initControlFlags(shardsDetachCmd)
+
+	flags := shardsDetachCmd.Flags()
+	flags.StringSlice(shardIDFlag, nil, "List of shard IDs in base58 encoding")
+}

cmd/frostfs-cli/modules/control/shards.go

@@ -18,6 +18,7 @@ func initControlShardsCmd() {
 	shardsCmd.AddCommand(flushCacheCmd)
 	shardsCmd.AddCommand(doctorCmd)
 	shardsCmd.AddCommand(writecacheShardCmd)
+	shardsCmd.AddCommand(shardsDetachCmd)
 
 	initControlShardsListCmd()
 	initControlSetShardModeCmd()
@@ -26,4 +27,5 @@ func initControlShardsCmd() {
 	initControlFlushCacheCmd()
 	initControlDoctorCmd()
 	initControlShardsWritecacheCmd()
+	initControlShardsDetachCmd()
 }

cmd/frostfs-cli/modules/control/shards_set_mode.go

@@ -145,9 +145,17 @@ func getShardIDList(cmd *cobra.Command) [][]byte {
 		return nil
 	}
 
+	return getShardIDListFromIDFlag(cmd, true)
+}
+
+func getShardIDListFromIDFlag(cmd *cobra.Command, withAllFlag bool) [][]byte {
 	sidList, _ := cmd.Flags().GetStringSlice(shardIDFlag)
 	if len(sidList) == 0 {
-		commonCmd.ExitOnErr(cmd, "", fmt.Errorf("either --%s or --%s flag must be provided", shardIDFlag, shardAllFlag))
+		if withAllFlag {
+			commonCmd.ExitOnErr(cmd, "", fmt.Errorf("either --%s or --%s flag must be provided", shardIDFlag, shardAllFlag))
+		} else {
+			commonCmd.ExitOnErr(cmd, "", fmt.Errorf("--%s flag value must be provided", shardIDFlag))
+		}
 	}
 
 	// We can sort the ID list and perform this check without additional allocations,