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operator.go
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operator.go
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package main
import (
"fmt"
"strconv"
"strings"
"github.com/pkg/errors"
"github.com/rs/zerolog/log"
)
// GetPubkey return list of pubkeys for specified wallet
func GetPubkeys(wallet string) ([]string, error) {
var pubkeys []string
var lastId string
var resp ValidatorID
for {
_, err := gqlClient.client.R().
SetBody(`{"query":"{\n validators(first:1000, where: {operator: \"` + strings.ToLower(wallet) + `\", id_gt: \"` + lastId + `\"}) {\n id\n }\n}","variables":{}}`).
SetResult(&resp).
Post("")
if err != nil || len(resp.Data.Validators) < 1 {
log.Error().Msgf("Can't get public keys from graph node %s", err)
return nil, err
}
for _, v := range resp.Data.Validators {
pubkeys = append(pubkeys, v.ID)
}
if len(resp.Data.Validators) >= 1000 {
lastId = pubkeys[len(pubkeys)-1]
} else {
break
}
}
chunkSize := 100
var indexes []string
for i := 0; i < len(pubkeys); i += chunkSize {
end := i + chunkSize
if end > len(pubkeys) {
end = len(pubkeys)
}
addr := fmt.Sprintf("/eth/v1/beacon/states/head/validators?id=%s", strings.Join(pubkeys[i:end], ","))
var resp ValidatorIndex
_, err := ethClient.client.R().
SetResult(&resp).
Get(addr)
if err != nil {
log.Error().Msgf("Can't convert public keys to indexes %s", err)
return nil, err
}
for i := 0; i < len(resp.Data); i++ {
if resp.Data[i].Status == "active_ongoing" {
indexes = append(indexes, resp.Data[i].Index)
}
}
}
return indexes, nil
}
// ValidatorBalances provides the validator balances for a given state.
// stateID can be a slot number or state root, or one of the special values "genesis", "head", "justified" or "finalized".
// validatorPubkeys is a list of validator pubkeys to restrict the returned values. If no validators are supplied no filter
// will be applied.
func ValidatorBalances(stateID int, validatorPubkeys []string) (map[string]int, error) {
if len(validatorPubkeys) <= 1 {
log.Error().Msg("No active validators")
return nil, nil
}
if len(validatorPubkeys) > cfg.INDEX_CHUNCK_SIZE {
return chunkedValidatorBalances(stateID, validatorPubkeys)
}
url := fmt.Sprintf("/eth/v1/beacon/states/%d/validator_balances", stateID)
if len(validatorPubkeys) != 0 {
ids := make([]string, len(validatorPubkeys))
for i := range validatorPubkeys {
ids[i] = validatorPubkeys[i]
}
url = fmt.Sprintf("%s?id=%s", url, strings.Join(ids, ","))
}
var resp ValidatorBalance
_, err := ethClient.client.R().
SetResult(&resp).
Get(url)
if err != nil || len(resp.Data) < 1 {
log.Error().Msgf("Can't get validator balances %e", err)
return nil, err
}
res := make(map[string]int)
for i := 0; i < len(resp.Data); i++ {
index := resp.Data[i].Index
balance, err := strconv.Atoi(resp.Data[i].Balance)
if err != nil {
log.Error().Err(err)
}
res[index] = balance
}
return res, nil
}
// chunkedValidatorBalances obtains the validator balances a chunk at a time.
func chunkedValidatorBalances(stateID int, validatorPubkeys []string) (map[string]int, error) {
res := make(map[string]int)
pubkeyChunkSize := cfg.INDEX_CHUNCK_SIZE
for i := 0; i < len(validatorPubkeys); i += pubkeyChunkSize {
chunkStart := i
chunkEnd := i + pubkeyChunkSize
if len(validatorPubkeys) < chunkEnd {
chunkEnd = len(validatorPubkeys)
}
chunk := validatorPubkeys[chunkStart:chunkEnd]
chunkRes, err := ValidatorBalances(stateID, chunk)
if err != nil {
return nil, errors.Wrap(err, "failed to obtain chunk")
}
for k, v := range chunkRes {
res[k] = v
}
}
return res, nil
}
// getEpoch return current and previous epoch slots
func getEpoch() (int, int, error) {
var resp FinalityCheckpoints
addr := "/eth/v1/beacon/states/head/finality_checkpoints"
_, err := ethClient.client.R().
SetResult(&resp).
Get(addr)
if err != nil {
log.Error().Msgf("Can't get epoch from beacon node %s", err)
return 0, 0, err
}
currentEpoch, err := strconv.Atoi(resp.Data.Finalized.Epoch)
if err != nil {
log.Error().Err(err)
return 0, 0, err
}
slotsPerEpoch, err := slotsPerEpoch()
if err != nil {
log.Error().Msgf("Can't get slots per epoch %s", err)
return 0, 0, err
}
currentSlot := currentEpoch * slotsPerEpoch
previousSlot := (currentEpoch - 1) * slotsPerEpoch
return currentSlot, previousSlot, nil
}
// slotsPerEpoch
func slotsPerEpoch() (int, error) {
var resp struct {
Data struct {
SlotsPerEpoch string `json:"SLOTS_PER_EPOCH"`
} `json:"data"`
}
addr := "/eth/v1/config/spec"
_, err := ethClient.client.R().
SetResult(&resp).
Get(addr)
if err != nil {
log.Error().Msgf("Can't get epoch from beacon node %s", err)
return 0, err
}
slotsPerEpoch, err := strconv.Atoi(resp.Data.SlotsPerEpoch)
if err != nil {
log.Error().Msgf("Can't parse SLOTS_PER_EPOCH %s", err)
return 0, err
}
return slotsPerEpoch, nil
}