frostfs-node/cmd/frostfs-cli/modules/control/shards_set_mode.go
Anton Nikiforov 5a9d6a09d8 [#8] cli: Set flag mode required for control shards set-mode
Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>
2023-02-06 16:45:03 +03:00

178 lines
4.9 KiB
Go

package control
import (
"fmt"
"strings"
rawclient "github.com/TrueCloudLab/frostfs-api-go/v2/rpc/client"
"github.com/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/common"
"github.com/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/key"
"github.com/TrueCloudLab/frostfs-node/pkg/services/control"
"github.com/mr-tron/base58"
"github.com/spf13/cobra"
)
const (
shardModeFlag = "mode"
shardIDFlag = "id"
shardAllFlag = "all"
shardClearErrorsFlag = "clear-errors"
)
// maps string command input to control.ShardMode. To support new mode, it's
// enough to add the map entry. Modes are automatically printed in command help
// messages.
var mShardModes = map[string]struct {
val control.ShardMode
// flag to support shard mode implicitly without help message. The flag is set
// for values which are not expected to be set by users but still supported
// for developers.
unsafe bool
}{
"read-only": {val: control.ShardMode_READ_ONLY},
"read-write": {val: control.ShardMode_READ_WRITE},
"degraded-read-write": {val: control.ShardMode_DEGRADED, unsafe: true},
"degraded-read-only": {val: control.ShardMode_DEGRADED_READ_ONLY},
}
// iterates over string representations of safe supported shard modes. Safe means
// modes which are expected to be used by any user. All other supported modes
// are for developers only.
func iterateSafeShardModes(f func(string)) {
for strMode, mode := range mShardModes {
if !mode.unsafe {
f(strMode)
}
}
}
// looks up for supported control.ShardMode represented by the given string.
// Returns false if no corresponding mode exists.
func lookUpShardModeFromString(str string) (control.ShardMode, bool) {
mode, ok := mShardModes[str]
if !ok {
return control.ShardMode_SHARD_MODE_UNDEFINED, false
}
return mode.val, true
}
// looks up for string representation of supported shard mode. Returns false
// if mode is not supported.
func lookUpShardModeString(m control.ShardMode) (string, bool) {
for strMode, mode := range mShardModes {
if mode.val == m {
return strMode, true
}
}
return "", false
}
var setShardModeCmd = &cobra.Command{
Use: "set-mode",
Short: "Set work mode of the shard",
Long: "Set work mode of the shard",
Run: setShardMode,
}
func initControlSetShardModeCmd() {
initControlFlags(setShardModeCmd)
flags := setShardModeCmd.Flags()
flags.StringSlice(shardIDFlag, nil, "List of shard IDs in base58 encoding")
flags.Bool(shardAllFlag, false, "Process all shards")
modes := make([]string, 0)
iterateSafeShardModes(func(strMode string) {
modes = append(modes, "'"+strMode+"'")
})
flags.String(shardModeFlag, "",
fmt.Sprintf("New shard mode (%s)", strings.Join(modes, ", ")),
)
_ = setShardModeCmd.MarkFlagRequired(shardModeFlag)
flags.Bool(shardClearErrorsFlag, false, "Set shard error count to 0")
setShardModeCmd.MarkFlagsMutuallyExclusive(shardIDFlag, shardAllFlag)
}
func setShardMode(cmd *cobra.Command, _ []string) {
pk := key.Get(cmd)
strMode, _ := cmd.Flags().GetString(shardModeFlag)
mode, ok := lookUpShardModeFromString(strMode)
if !ok {
common.ExitOnErr(cmd, "", fmt.Errorf("unsupported mode %s", strMode))
}
req := new(control.SetShardModeRequest)
body := new(control.SetShardModeRequest_Body)
req.SetBody(body)
body.SetMode(mode)
body.SetShardIDList(getShardIDList(cmd))
reset, _ := cmd.Flags().GetBool(shardClearErrorsFlag)
body.ClearErrorCounter(reset)
signRequest(cmd, pk, req)
cli := getClient(cmd, pk)
var resp *control.SetShardModeResponse
var err error
err = cli.ExecRaw(func(client *rawclient.Client) error {
resp, err = control.SetShardMode(client, req)
return err
})
common.ExitOnErr(cmd, "rpc error: %w", err)
verifyResponse(cmd, resp.GetSignature(), resp.GetBody())
cmd.Println("Shard mode update request successfully sent.")
}
func getShardID(cmd *cobra.Command) []byte {
sid, _ := cmd.Flags().GetString(shardIDFlag)
raw, err := base58.Decode(sid)
common.ExitOnErr(cmd, "incorrect shard ID encoding: %w", err)
return raw
}
func getShardIDList(cmd *cobra.Command) [][]byte {
all, _ := cmd.Flags().GetBool(shardAllFlag)
if all {
return nil
}
sidList, _ := cmd.Flags().GetStringSlice(shardIDFlag)
if len(sidList) == 0 {
common.ExitOnErr(cmd, "", fmt.Errorf("either --%s or --%s flag must be provided", shardIDFlag, shardAllFlag))
}
// We can sort the ID list and perform this check without additional allocations,
// but preserving the user order is a nice thing to have.
// Also, this is a CLI, we don't care too much about this.
seen := make(map[string]struct{})
for i := range sidList {
if _, ok := seen[sidList[i]]; ok {
common.ExitOnErr(cmd, "", fmt.Errorf("duplicated shard IDs: %s", sidList[i]))
}
seen[sidList[i]] = struct{}{}
}
res := make([][]byte, 0, len(sidList))
for i := range sidList {
raw, err := base58.Decode(sidList[i])
common.ExitOnErr(cmd, "incorrect shard ID encoding: %w", err)
res = append(res, raw)
}
return res
}