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package monitor
import (
"fmt"
"log"
"math"
"math/big"
"strconv"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/ethclient"
)
type node struct {
owner common.Address
email string
fined *big.Int
name string
publicKey []byte
nodeKeyAddress common.Address
}
func (n node) Print() {
fmt.Println("========")
fmt.Println(n.name)
fmt.Println("fined: ", n.fined)
fmt.Println("email: ", n.email)
fmt.Println("owner: ", n.owner.Hex())
fmt.Println("nodekey address: ", n.nodeKeyAddress.Hex())
}
// NetworkConfig represents the network config.
type NetworkConfig struct {
WSEndpoint string
HTTPEndpoint string
EthHTTPEndpoint string
GovAddress common.Address
Network string
}
// GovAddress is governance address.
var GovAddress = common.HexToAddress("0x246FcDE58581e2754f215A523C0718C4BFc8041F")
// Fifty is 50 * 10^18
var Fifty *big.Int
// OneHundred is 100 * 10^18
var OneHundred *big.Int
func init() {
Fifty, _ = big.NewInt(0).SetString("50000000000000000000", 10)
OneHundred, _ = big.NewInt(0).SetString("100000000000000000000", 10)
}
// NetworkConfigMap represents the system network config mapping.
var NetworkConfigMap = map[int64]NetworkConfig{
411: {
WSEndpoint: "wss://mainnet-rpc.tangerine-network.io/ws",
HTTPEndpoint: "https://mainnet-rpc.tangerine-network.io",
EthHTTPEndpoint: "https://mainnet.infura.io/v3/4eb07139b29d41c59b352f21c4c9f526",
Network: "Mainnet",
},
374: {
WSEndpoint: "wss://testnet-rpc.tangerine-network.io/ws",
HTTPEndpoint: "https://testnet-rpc.tangerine-network.io",
EthHTTPEndpoint: "https://rinkeby.infura.io/v3/4eb07139b29d41c59b352f21c4c9f526",
Network: "Testnet",
},
}
// Monitor is the object to monitor tangerine network.
type Monitor struct {
networkID int
notifiers []Notifier
backend backendIntf
tanBalancesCache map[common.Address]*big.Int
ethBalancesCache map[common.Address]*big.Int
ethThreshold *big.Int // in wei
ethThresholdString string // in ETH
checkBalanceDuration time.Duration
}
// NewMonitor is the constructor for monitor object.
func NewMonitor(networkID int, backend backendIntf, threshold string) *Monitor {
tanBalance := make(map[common.Address]*big.Int)
ethBalance := make(map[common.Address]*big.Int)
t, err := strconv.ParseFloat(threshold, 64)
if err != nil {
panic(err)
}
t = t * math.Pow(10, 18)
ethThreshold := new(big.Int)
ethThreshold.SetString(
strconv.FormatFloat(t, 'f', 0, 64),
10,
)
m := Monitor{
networkID: networkID,
backend: backend,
tanBalancesCache: tanBalance,
ethBalancesCache: ethBalance,
checkBalanceDuration: 24 * time.Hour,
ethThresholdString: threshold,
ethThreshold: ethThreshold,
}
return &m
}
// Run is the entry point for running monitor.
func (m *Monitor) Run() {
done := make(chan bool)
finedNodeChan := make(chan node)
go m.fetchFinedNodes(finedNodeChan)
go m.sendNotifications(finedNodeChan, FINED)
go m.checkTanBalance()
go m.checkEthBalance()
<-done
}
func (m *Monitor) checkEthBalance() {
ethNodeChan := make(chan node)
go m.sendNotifications(ethNodeChan, INSUFFICIENT_ETH)
for {
nc := NetworkConfigMap[int64(m.networkID)]
conn, err := ethclient.Dial(nc.EthHTTPEndpoint)
if err != nil {
log.Println("Get Tan balance fail at")
continue
}
nodes := m.backend.NodeSet()
for i := range nodes {
n := nodes[i]
address := n.nodeKeyAddress
balance := m.backend.BalanceFromAddress(conn, address)
if balance.Cmp(m.ethThreshold) < 0 {
if cacheBalance, exist := m.ethBalancesCache[address]; exist {
if cacheBalance.Cmp(m.ethThreshold) >= 0 {
ethNodeChan <- n
}
} else {
ethNodeChan <- n
}
}
m.ethBalancesCache[address] = balance
}
time.Sleep(m.checkBalanceDuration)
}
}
func (m *Monitor) checkTanBalance() {
tanNodeChan := make(chan node)
go m.sendNotifications(tanNodeChan, INSUFFICIENT_TAN)
for {
nodes := m.backend.NodeSet()
nc := NetworkConfigMap[int64(m.networkID)]
conn, err := ethclient.Dial(nc.HTTPEndpoint)
if err != nil {
log.Println("Get TAN balance fail")
continue
}
for i := range nodes {
n := nodes[i]
balance := m.backend.BalanceFromAddress(conn, n.nodeKeyAddress)
if balance.Cmp(Fifty) < 0 {
if cacheBalance, exist := m.tanBalancesCache[n.nodeKeyAddress]; exist {
if cacheBalance.Cmp(Fifty) >= 0 {
tanNodeChan <- n
}
} else {
tanNodeChan <- n
}
} else if balance.Cmp(OneHundred) < 0 {
if cacheBalance, exist := m.tanBalancesCache[n.nodeKeyAddress]; exist {
if cacheBalance.Cmp(OneHundred) >= 0 {
tanNodeChan <- n
}
} else {
tanNodeChan <- n
}
}
m.tanBalancesCache[n.nodeKeyAddress] = balance
}
time.Sleep(m.checkBalanceDuration)
}
}
// Register registries the notifiers.
func (m *Monitor) Register(n Notifier) {
m.notifiers = append(m.notifiers, n)
}
func (m *Monitor) fetchFinedNodes(nodeChan chan node) {
m.backend.FetchFinedNodes(nodeChan)
}
func (m *Monitor) sendNotifications(nodeChan chan node, notifyType uint) {
nc := NetworkConfigMap[int64(m.networkID)]
for {
node, open := <-nodeChan
if !open {
return
}
for _, notifier := range m.notifiers {
notifier.notify(node, nc.Network,
notifyType, m.ethThresholdString)
}
}
}
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