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nodedelegate.go
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/
nodedelegate.go
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// Copyright (c) 2022 IoTeX Foundation
// This source code is provided 'as is' and no warranties are given as to title or non-infringement, merchantability
// or fitness for purpose and, to the extent permitted by law, all liability for your use of the code is disclaimed.
// This source code is governed by Apache License 2.0 that can be found in the LICENSE file.
package node
import (
"context"
"fmt"
"math/big"
"sort"
"strconv"
"strings"
"github.com/grpc-ecosystem/go-grpc-middleware/util/metautils"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"github.com/iotexproject/iotex-proto/golang/iotexapi"
"github.com/iotexproject/iotex-proto/golang/iotextypes"
"github.com/iotexproject/iotex-core/action/protocol/vote"
"github.com/iotexproject/iotex-core/ioctl/cmd/alias"
"github.com/iotexproject/iotex-core/ioctl/cmd/bc"
"github.com/iotexproject/iotex-core/ioctl/config"
"github.com/iotexproject/iotex-core/ioctl/output"
"github.com/iotexproject/iotex-core/ioctl/util"
"github.com/iotexproject/iotex-core/state"
)
const (
_protocolID = "staking"
_readCandidatesLimit = 20000
_defaultDelegateNum = 36
)
// Multi-language support
var (
_delegateCmdUses = map[config.Language]string{
config.English: "delegate [-e epoch-num] [-a]",
config.Chinese: "delegate [-e epoch数] [-a]",
}
_delegateCmdShorts = map[config.Language]string{
config.English: "Print consensus delegates information in certain epoch",
config.Chinese: "打印在特定epoch内的共识代表的信息",
}
_flagEpochNumUsages = map[config.Language]string{
config.English: "specify specific epoch",
config.Chinese: "指定特定epoch",
}
)
var (
_epochNum uint64
_nodeStatus map[bool]string
_probatedStatus map[bool]string
)
// _nodeDelegateCmd represents the node delegate command
var _nodeDelegateCmd = &cobra.Command{
Use: config.TranslateInLang(_delegateCmdUses, config.UILanguage),
Short: config.TranslateInLang(_delegateCmdShorts, config.UILanguage),
Args: cobra.ExactArgs(0),
RunE: func(cmd *cobra.Command, args []string) error {
cmd.SilenceUsage = true
err := delegates()
return output.PrintError(err)
},
}
type delegate struct {
Address string `json:"address"`
Name string `json:"string"`
Rank int `json:"rank"`
Alias string `json:"alias"`
Active bool `json:"active"`
Production int `json:"production"`
Votes string `json:"votes"`
ProbatedStatus bool `json:"_probatedStatus"`
TotalWeightedVotes *big.Int `json:"totalWeightedVotes"`
}
type delegatesMessage struct {
Epoch int `json:"epoch"`
StartBlock int `json:"startBlock"`
TotalBlocks int `json:"totalBlocks"`
Delegates []delegate `json:"delegates"`
}
func (m *delegatesMessage) String() string {
if output.Format == "" {
aliasLen := 5
for _, bp := range m.Delegates {
if len(bp.Alias) > aliasLen {
aliasLen = len(bp.Alias)
}
}
lines := []string{fmt.Sprintf("Epoch: %d, Start block height: %d,Total blocks produced in epoch: %d\n",
m.Epoch, m.StartBlock, m.TotalBlocks)}
formatTitleString := "%-41s %-12s %-4s %-" + strconv.Itoa(aliasLen) + "s %-6s %-6s %-12s %s"
formatDataString := "%-41s %-12s %4d %-" + strconv.Itoa(aliasLen) + "s %-6s %-6d %-12s %s"
lines = append(lines, fmt.Sprintf(formatTitleString,
"Address", "Name", "Rank", "Alias", "Status", "Blocks", "ProbatedStatus", "Votes"))
for _, bp := range m.Delegates {
lines = append(lines, fmt.Sprintf(formatDataString, bp.Address, bp.Name, bp.Rank, bp.Alias, _nodeStatus[bp.Active], bp.Production, _probatedStatus[bp.ProbatedStatus], bp.Votes))
}
return strings.Join(lines, "\n")
}
return output.FormatString(output.Result, m)
}
func init() {
_nodeDelegateCmd.Flags().Uint64VarP(&_epochNum, "epoch-num", "e", 0,
config.TranslateInLang(_flagEpochNumUsages, config.UILanguage))
_nodeStatus = map[bool]string{true: "active", false: ""}
_probatedStatus = map[bool]string{true: "probated", false: ""}
}
func delegates() error {
if _epochNum == 0 {
chainMeta, err := bc.GetChainMeta()
if err != nil {
return output.NewError(0, "failed to get chain meta", err)
}
epochData := chainMeta.GetEpoch()
if epochData == nil {
return output.NewError(0, "ROLLDPOS is not registered", nil)
}
_epochNum = epochData.Num
}
response, err := bc.GetEpochMeta(_epochNum)
if err != nil {
return output.NewError(0, "failed to get epoch meta", err)
}
if response.EpochData == nil {
return output.NewError(0, "ROLLDPOS is not registered", nil)
}
epochData := response.EpochData
aliases := alias.GetAliasMap()
message := delegatesMessage{
Epoch: int(epochData.Num),
StartBlock: int(epochData.Height),
TotalBlocks: int(response.TotalBlocks),
}
probationList, err := getProbationList(_epochNum, epochData.Height)
if err != nil {
return output.NewError(0, "failed to get probation list", err)
}
if epochData.Height >= config.ReadConfig.Nsv2height {
return delegatesV2(probationList, response, &message)
}
for rank, bp := range response.BlockProducersInfo {
votes, ok := new(big.Int).SetString(bp.Votes, 10)
if !ok {
return output.NewError(output.ConvertError, "failed to convert votes into big int", nil)
}
isProbated := false
if _, ok := probationList.ProbationInfo[bp.Address]; ok {
// if it exists in probation info
isProbated = true
}
delegate := delegate{
Address: bp.Address,
Rank: rank + 1,
Alias: aliases[bp.Address],
Active: bp.Active,
Production: int(bp.Production),
Votes: util.RauToString(votes, util.IotxDecimalNum),
ProbatedStatus: isProbated,
}
message.Delegates = append(message.Delegates, delegate)
}
return sortAndPrint(&message)
}
func delegatesV2(pb *vote.ProbationList, epochMeta *iotexapi.GetEpochMetaResponse, message *delegatesMessage) error {
conn, err := util.ConnectToEndpoint(config.ReadConfig.SecureConnect && !config.Insecure)
if err != nil {
return output.NewError(output.NetworkError, "failed to connect to endpoint", err)
}
defer conn.Close()
cli := iotexapi.NewAPIServiceClient(conn)
ctx := context.Background()
jwtMD, err := util.JwtAuth()
if err == nil {
ctx = metautils.NiceMD(jwtMD).ToOutgoing(ctx)
}
request := &iotexapi.ReadStateRequest{
ProtocolID: []byte("poll"),
MethodName: []byte("ActiveBlockProducersByEpoch"),
Arguments: [][]byte{[]byte(strconv.FormatUint(epochMeta.EpochData.Num, 10))},
Height: strconv.FormatUint(epochMeta.EpochData.Height, 10),
}
abpResponse, err := cli.ReadState(ctx, request)
if err != nil {
sta, ok := status.FromError(err)
if ok && sta.Code() == codes.NotFound {
fmt.Println(message.String())
return nil
} else if ok {
return output.NewError(output.APIError, sta.Message(), nil)
}
return output.NewError(output.NetworkError, "failed to invoke ReadState api", err)
}
var ABPs state.CandidateList
if err := ABPs.Deserialize(abpResponse.Data); err != nil {
return output.NewError(output.SerializationError, "failed to deserialize active BPs", err)
}
request = &iotexapi.ReadStateRequest{
ProtocolID: []byte("poll"),
MethodName: []byte("BlockProducersByEpoch"),
Arguments: [][]byte{[]byte(strconv.FormatUint(epochMeta.EpochData.Num, 10))},
}
bpResponse, err := cli.ReadState(ctx, request)
if err != nil {
sta, ok := status.FromError(err)
if ok {
return output.NewError(output.APIError, sta.Message(), nil)
}
return output.NewError(output.NetworkError, "failed to invoke ReadState api", err)
}
var BPs state.CandidateList
if err := BPs.Deserialize(bpResponse.Data); err != nil {
return output.NewError(output.SerializationError, "failed to deserialize BPs", err)
}
isActive := make(map[string]bool)
for _, abp := range ABPs {
isActive[abp.Address] = true
}
production := make(map[string]int)
for _, info := range epochMeta.BlockProducersInfo {
production[info.Address] = int(info.Production)
}
aliases := alias.GetAliasMap()
for rank, bp := range BPs {
isProbated := false
if _, ok := pb.ProbationInfo[bp.Address]; ok {
isProbated = true
}
votes := big.NewInt(0).SetBytes(bp.Votes.Bytes())
message.Delegates = append(message.Delegates, delegate{
Address: bp.Address,
Rank: rank + 1,
Alias: aliases[bp.Address],
Active: isActive[bp.Address],
Production: production[bp.Address],
Votes: util.RauToString(votes, util.IotxDecimalNum),
ProbatedStatus: isProbated,
})
}
if err = fillMessage(cli, message, aliases, isActive, pb); err != nil {
return err
}
return sortAndPrint(message)
}
func sortAndPrint(message *delegatesMessage) error {
if _allFlag.Value() == false && len(message.Delegates) > _defaultDelegateNum {
message.Delegates = message.Delegates[:_defaultDelegateNum]
fmt.Println(message.String())
return nil
}
for i := _defaultDelegateNum; i < len(message.Delegates); i++ {
totalWeightedVotes, ok := big.NewFloat(0).SetString(message.Delegates[i].Votes)
if !ok {
return errors.New("string convert to big float")
}
totalWeightedVotesInt, _ := totalWeightedVotes.Int(nil)
message.Delegates[i].TotalWeightedVotes = totalWeightedVotesInt
}
if len(message.Delegates) > _defaultDelegateNum {
latter := message.Delegates[_defaultDelegateNum:]
message.Delegates = message.Delegates[:_defaultDelegateNum]
sort.SliceStable(latter, func(i, j int) bool {
return latter[i].TotalWeightedVotes.Cmp(latter[j].TotalWeightedVotes) > 0
})
for i, t := range latter {
t.Rank = _defaultDelegateNum + i + 1
message.Delegates = append(message.Delegates, t)
}
}
fmt.Println(message.String())
return nil
}
func getProbationList(_epochNum uint64, epochStartHeight uint64) (*vote.ProbationList, error) {
probationListRes, err := bc.GetProbationList(_epochNum, epochStartHeight)
if err != nil {
return nil, err
}
probationList := &vote.ProbationList{}
if probationListRes != nil {
if err := probationList.Deserialize(probationListRes.Data); err != nil {
return nil, err
}
}
return probationList, nil
}
func fillMessage(cli iotexapi.APIServiceClient, message *delegatesMessage, alias map[string]string, active map[string]bool, pb *vote.ProbationList) error {
cl, err := getAllStakingCandidates(cli)
if err != nil {
return err
}
addressMap := make(map[string]*iotextypes.CandidateV2)
for _, candidate := range cl.Candidates {
addressMap[candidate.OperatorAddress] = candidate
}
delegateAddressMap := make(map[string]struct{})
for _, m := range message.Delegates {
delegateAddressMap[m.Address] = struct{}{}
}
for i, m := range message.Delegates {
if c, ok := addressMap[m.Address]; ok {
message.Delegates[i].Name = c.Name
continue
}
}
rank := len(message.Delegates) + 1
for _, candidate := range cl.Candidates {
if _, ok := delegateAddressMap[candidate.OperatorAddress]; ok {
continue
}
isProbated := false
if _, ok := pb.ProbationInfo[candidate.OperatorAddress]; ok {
isProbated = true
}
iotx, err := util.StringToIOTX(candidate.TotalWeightedVotes)
if err != nil {
return err
}
message.Delegates = append(message.Delegates, delegate{
Address: candidate.OperatorAddress,
Name: candidate.Name,
Rank: rank,
Alias: alias[candidate.OperatorAddress],
Active: active[candidate.OperatorAddress],
Votes: iotx,
ProbatedStatus: isProbated,
})
rank++
}
return nil
}
func getAllStakingCandidates(chainClient iotexapi.APIServiceClient) (candidateListAll *iotextypes.CandidateListV2, err error) {
candidateListAll = &iotextypes.CandidateListV2{}
for i := uint32(0); ; i++ {
offset := i * _readCandidatesLimit
size := uint32(_readCandidatesLimit)
candidateList, err := util.GetStakingCandidates(chainClient, offset, size)
if err != nil {
return nil, errors.Wrap(err, "failed to get candidates")
}
candidateListAll.Candidates = append(candidateListAll.Candidates, candidateList.Candidates...)
if len(candidateList.Candidates) < _readCandidatesLimit {
break
}
}
return
}