Brother even blockchain tutorial Open-ethereum-pool mining pool Source Code Analysis payouts Module

Open-ethereum-pooleth Mineral pool-payouts module Payoutsprocessor definition

type PayoutsProcessor struct {    config *PayoutsConfig    backend *storage.RedisClient    rpc *rpc.RPCClient    halt bool    lastFail error}

Getpendingpayments principle

func (r *RedisClient) GetPendingPayments() []*PendingPayment {    //ZREVRANGE eth:payments:pending 0 -1 WITHSCORES    raw := r.client.ZRevRangeWithScores(r.formatKey("payments", "pending"), 0, -1)    var result []*PendingPayment    for _, v := range raw.Val() {        // timestamp -> "address:amount"        payment := PendingPayment{}        payment.Timestamp = int64(v.Score)        fields := strings.Split(v.Member.(string), ":")        payment.Address = fields[0]        payment.Amount, _ = strconv.ParseInt(fields[1], 10, 64)        result = append(result, &payment)    }    return result}

Getpayees principle

func (r *RedisClient) GetPayees() ([]string, error) {    payees := make(map[string]struct{})    var result []string    var c int64    for {        var keys []string        var err error        c, keys, err = r.client.Scan(c, r.formatKey("miners", "*"), 100).Result()        if err != nil {            return nil, err        }        for _, row := range keys {            login := strings.Split(row, ":")[2]            payees[login] = struct{}{}        }        if c == 0 {            break        }    }    for login, _ := range payees {        result = append(result, login)    }    return result, nil}

Lockpayouts principle

func (r *RedisClient) LockPayouts(login string, amount int64) error {    //eth:payments:lock    key := r.formatKey("payments", "lock")    //SETNX eth:payments:lock login:amount 0    //Setnx（SET if Not eXists） 命令在指定的 key 不存在时，为 key 设置指定的值    result := r.client.SetNX(key, join(login, amount), 0).Val()    if !result {        return fmt.Errorf("Unable to acquire lock ‘%s‘", key)    }    return nil}

UpdateBalance principle

func (r *RedisClient) UpdateBalance(login string, amount int64) error {tx := r.client.Multi()defer tx.Close()ts := util.MakeTimestamp() / 1000_, err := tx.Exec(func() error {                //Hincrby 命令用于为哈希表中的字段值加上指定增量值                //HINCRBY eth:miners:login balance -amounttx.HIncrBy(r.formatKey("miners", login), "balance", (amount * -1))                //HINCRBY eth:miners:login pending amounttx.HIncrBy(r.formatKey("miners", login), "pending", amount)                //HINCRBY eth:finances balance -amounttx.HIncrBy(r.formatKey("finances"), "balance", (amount * -1))                //HINCRBY eth:finances pending amounttx.HIncrBy(r.formatKey("finances"), "pending", amount)                //ZADD eth:payments:pending ts login:amount                //Zadd 命令用于将一个或多个成员元素及其分数值加入到有序集当中tx.ZAdd(r.formatKey("payments", "pending"), redis.Z{Score: float64(ts), Member: join(login, amount)})return nil})return err}

Rollbackbalance principle

func (r *RedisClient) RollbackBalance(login string, amount int64) error {    tx := r.client.Multi()    defer tx.Close()    _, err := tx.Exec(func() error {        tx.HIncrBy(r.formatKey("miners", login), "balance", amount)        tx.HIncrBy(r.formatKey("miners", login), "pending", (amount * -1))        tx.HIncrBy(r.formatKey("finances"), "balance", amount)        tx.HIncrBy(r.formatKey("finances"), "pending", (amount * -1))        tx.ZRem(r.formatKey("payments", "pending"), join(login, amount))        return nil    })    return err}

Writepayment principle

Func (R *redisclient) writepayment (login, Txhash string, amount Int64) error {tx: = R.client.multi () defer TX. Close () TS: = util. Maketimestamp ()/$ _, Err: = Tx. Exec (func () error {//hincrby Eth:miners:login pending-amount tx. Hincrby (R.formatkey ("miners", login), "Pending", (Amount *-1))//hincrby Eth:miners:login paid Amount TX. Hincrby (R.formatkey ("miners", login), "paid", amount)//hincrby eth:finances pending-amount TX. Hincrby (R.formatkey ("finances"), "Pending", (Amount *-1))//hincrby Eth:finances paid Amount TX. Hincrby (R.formatkey ("finances"), "paid", amount)//zadd eth:payments:all ts txHash:login:amount TX. Zadd (R.formatkey ("payments", "all"), Redis. Z{score:float64 (TS), Member:join (txhash, login, amount)})//zadd eth:payments:login ts txhash:amount TX. Zadd (R.formatkey ("payments", login), Redis. Z{score:float64 (TS), Member:join (Txhash, amount)})//zrem Eth:payments:pending login:amount//zrem Command Redis ordered collection (sorted set) Redis zrem command to remove one or more member TX from an ordered set.        Zrem (R.formatkey ("payments", "Pending"), join (login, amount))//del command to delete an existing key//del Eth:payments:lock Tx. Del (R.formatkey ("payments", "lock")) return nil}) return err}

Brother chain Tutorial Open-ethereum-pool Mining pool Source Code Analysis payouts module