frostfs-node/cmd/neofs-cli/modules/control/shards_list.go

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package control
import (
"bytes"
"encoding/json"
"fmt"
"github.com/mr-tron/base58"
rawclient "github.com/nspcc-dev/neofs-api-go/v2/rpc/client"
"github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/common"
"github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/commonflags"
"github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/key"
"github.com/nspcc-dev/neofs-node/pkg/services/control"
"github.com/spf13/cobra"
)
var listShardsCmd = &cobra.Command{
Use: "list",
Short: "List shards of the storage node",
Long: "List shards of the storage node",
Run: listShards,
}
func initControlShardsListCmd() {
commonflags.InitWithoutRPC(listShardsCmd)
flags := listShardsCmd.Flags()
flags.String(controlRPC, controlRPCDefault, controlRPCUsage)
flags.Bool(commonflags.JSON, false, "Print shard info as a JSON array")
}
func listShards(cmd *cobra.Command, _ []string) {
pk := key.Get(cmd)
req := new(control.ListShardsRequest)
req.SetBody(new(control.ListShardsRequest_Body))
signRequest(cmd, pk, req)
cli := getClient(cmd, pk)
var resp *control.ListShardsResponse
var err error
err = cli.ExecRaw(func(client *rawclient.Client) error {
resp, err = control.ListShards(client, req)
return err
})
common.ExitOnErr(cmd, "rpc error: %w", err)
verifyResponse(cmd, resp.GetSignature(), resp.GetBody())
isJSON, _ := cmd.Flags().GetBool(commonflags.JSON)
if isJSON {
prettyPrintShardsJSON(cmd, resp.GetBody().GetShards())
} else {
prettyPrintShards(cmd, resp.GetBody().GetShards())
}
}
func prettyPrintShardsJSON(cmd *cobra.Command, ii []*control.ShardInfo) {
out := make([]map[string]interface{}, 0, len(ii))
for _, i := range ii {
out = append(out, map[string]interface{}{
"shard_id": base58.Encode(i.Shard_ID),
"mode": shardModeToString(i.GetMode()),
"metabase": i.GetMetabasePath(),
"blobstor": i.GetBlobstorPath(),
"writecache": i.GetWritecachePath(),
"error_count": i.GetErrorCount(),
})
}
buf := bytes.NewBuffer(nil)
enc := json.NewEncoder(buf)
enc.SetIndent("", " ")
common.ExitOnErr(cmd, "cannot shard info to JSON: %w", enc.Encode(out))
cmd.Print(buf.String()) // pretty printer emits newline, to no need for Println
}
func prettyPrintShards(cmd *cobra.Command, ii []*control.ShardInfo) {
for _, i := range ii {
pathPrinter := func(name, path string) string {
if path == "" {
return ""
}
return fmt.Sprintf("%s: %s\n", name, path)
}
cmd.Printf("Shard %s:\nMode: %s\n"+
pathPrinter("Metabase", i.GetMetabasePath())+
pathPrinter("Blobstor", i.GetBlobstorPath())+
pathPrinter("Write-cache", i.GetWritecachePath())+
fmt.Sprintf("Error count: %d\n", i.GetErrorCount()),
base58.Encode(i.Shard_ID),
shardModeToString(i.GetMode()),
)
}
}
func shardModeToString(m control.ShardMode) string {
switch m {
case control.ShardMode_READ_WRITE:
return "read-write"
case control.ShardMode_READ_ONLY:
return "read-only"
case control.ShardMode_DEGRADED:
return "degraded"
default:
return "unknown"
}
}