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witness.go
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witness.go
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package blockcache
import (
"encoding/json"
"errors"
"strings"
"github.com/iost-official/go-iost/v3/common"
"github.com/iost-official/go-iost/v3/core/block"
"github.com/iost-official/go-iost/v3/ilog"
"github.com/iost-official/go-iost/v3/core/version"
"github.com/iost-official/go-iost/v3/vm/database"
)
// SetPending set pending witness list
func (wl *WitnessList) SetPending(pl []string) {
wl.PendingWitnessList = pl
}
// SetActive set active witness list
func (wl *WitnessList) SetActive(al []string) {
wl.ActiveWitnessList = al
}
// Pending get pending witness list
func (wl *WitnessList) Pending() []string {
return wl.PendingWitnessList
}
// Active get active witness list
func (wl *WitnessList) Active() []string {
return wl.ActiveWitnessList
}
// NetID get net id
func (wl *WitnessList) NetID() []string {
return wl.WitnessInfo
}
// getPendingFromDB get pending witness list
func (wl *WitnessList) getPendingFromDB(mv database.IMultiValue, rules *version.Rules) ([]string, error) {
result := make([]string, 0)
vi := database.NewVisitor(0, mv, rules)
jwl := database.MustUnmarshal(vi.Get("vote_producer.iost-" + "pendingProducerList"))
if jwl == nil {
return result, errors.New("failed to get pending list")
}
err := json.Unmarshal([]byte(jwl.(string)), &result)
return result, err
}
// UpdateInfo update pending witness list
func (wl *WitnessList) UpdateInfo(mv database.IMultiValue, rules *version.Rules) error {
wl.WitnessInfo = make([]string, 0)
vi := database.NewVisitor(0, mv, rules)
for _, v := range wl.PendingWitnessList {
iAcc := database.MustUnmarshal(vi.MGet("vote_producer.iost-producerKeyToId", v))
if iAcc == nil {
continue
}
acc := strings.Trim(iAcc.(string), "\"")
jwl := database.MustUnmarshal(vi.MGet("vote_producer.iost-producerTable", acc))
if jwl == nil {
continue
}
var str WitnessInfo
err := json.Unmarshal([]byte(jwl.(string)), &str)
if err != nil {
continue
}
wl.WitnessInfo = append(wl.WitnessInfo, str.NetID)
}
return nil
}
// CopyWitness is copy witness
func (wl *WitnessList) CopyWitness(n *BlockCacheNode) {
if n == nil {
return
}
wl.SetActive(n.Active())
wl.SetPending(n.Pending())
}
type WitnessStatus struct {
PendingList []string `json:"pendingList"`
CurrentList []string `json:"currentList"`
}
func GetWitnessStatusFromBlock(b *block.Block) (*WitnessStatus, error) {
result := &WitnessStatus{}
for _, r := range b.Receipts {
for _, rr := range r.Receipts {
if rr.FuncName == "vote_producer.iost/stat" {
err := json.Unmarshal([]byte(rr.Content), result)
if err != nil {
ilog.Warn("invalid vote_producer.iost/stat receipt", rr.Content, err)
continue
}
return result, nil
}
}
}
ilog.Warn("vote_producer.iost/stat receipt not found at block ", b.Head.Number, ",hash:", common.Base58Encode(b.HeadHash()))
return result, nil
}