You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
291 lines
9.6 KiB
291 lines
9.6 KiB
package explorer
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"fmt"
|
|
"math/big"
|
|
"net"
|
|
"net/http"
|
|
"strconv"
|
|
"time"
|
|
|
|
ethCommon "github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/rpc"
|
|
"github.com/gorilla/mux"
|
|
msg_pb "github.com/harmony-one/harmony/api/proto/message"
|
|
"github.com/harmony-one/harmony/api/service/syncing"
|
|
"github.com/harmony-one/harmony/core"
|
|
"github.com/harmony-one/harmony/internal/chain"
|
|
"github.com/harmony-one/harmony/internal/common"
|
|
"github.com/harmony-one/harmony/internal/utils"
|
|
"github.com/harmony-one/harmony/numeric"
|
|
"github.com/harmony-one/harmony/p2p"
|
|
stakingReward "github.com/harmony-one/harmony/staking/reward"
|
|
)
|
|
|
|
// Constants for explorer service.
|
|
const (
|
|
explorerPortDifference = 4000
|
|
defaultPageSize = "1000"
|
|
maxAddresses = 100000
|
|
)
|
|
|
|
// HTTPError is an HTTP error.
|
|
type HTTPError struct {
|
|
Code int
|
|
Msg string
|
|
}
|
|
|
|
// Service is the struct for explorer service.
|
|
type Service struct {
|
|
router *mux.Router
|
|
IP string
|
|
Port string
|
|
Storage *Storage
|
|
server *http.Server
|
|
messageChan chan *msg_pb.Message
|
|
stateSync *syncing.StateSync
|
|
blockchain *core.BlockChain
|
|
}
|
|
|
|
// New returns explorer service.
|
|
func New(selfPeer *p2p.Peer, ss *syncing.StateSync, bc *core.BlockChain) *Service {
|
|
return &Service{IP: selfPeer.IP, Port: selfPeer.Port, stateSync: ss, blockchain: bc}
|
|
}
|
|
|
|
// Start starts explorer service.
|
|
func (s *Service) Start() error {
|
|
utils.Logger().Info().Msg("Starting explorer service.")
|
|
s.Init()
|
|
s.server = s.Run()
|
|
return nil
|
|
}
|
|
|
|
// Stop shutdowns explorer service.
|
|
func (s *Service) Stop() error {
|
|
utils.Logger().Info().Msg("Shutting down explorer service.")
|
|
if err := s.server.Shutdown(context.Background()); err != nil {
|
|
utils.Logger().Error().Err(err).Msg("Error when shutting down explorer server")
|
|
} else {
|
|
utils.Logger().Info().Msg("Shutting down explorer server successfully")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// GetExplorerPort returns the port serving explorer dashboard. This port is explorerPortDifference less than the node port.
|
|
func GetExplorerPort(nodePort string) string {
|
|
if port, err := strconv.Atoi(nodePort); err == nil {
|
|
return fmt.Sprintf("%d", port-explorerPortDifference)
|
|
}
|
|
utils.Logger().Error().Msg("error on parsing.")
|
|
return ""
|
|
}
|
|
|
|
// Init is to initialize for ExplorerService.
|
|
func (s *Service) Init() {
|
|
s.Storage = GetStorageInstance(s.IP, s.Port)
|
|
}
|
|
|
|
// Run is to run serving explorer.
|
|
func (s *Service) Run() *http.Server {
|
|
// Init address.
|
|
port := GetExplorerPort(s.Port)
|
|
addr := net.JoinHostPort("", port)
|
|
|
|
s.router = mux.NewRouter()
|
|
|
|
// Set up router for addresses.
|
|
// Fetch addresses request, accepts parameter size: how much addresses to read,
|
|
// parameter prefix: from which address prefix start
|
|
s.router.Path("/addresses").Queries("size", "{[0-9]*?}", "prefix", "{[a-zA-Z0-9]*?}").HandlerFunc(s.GetAddresses).Methods("GET")
|
|
s.router.Path("/addresses").HandlerFunc(s.GetAddresses)
|
|
|
|
// Set up router for supply info
|
|
s.router.Path("/burn-addresses").Queries().HandlerFunc(s.GetInaccessibleAddressInfo).Methods("GET")
|
|
s.router.Path("/burn-addresses").HandlerFunc(s.GetInaccessibleAddressInfo)
|
|
s.router.Path("/circulating-supply").Queries().HandlerFunc(s.GetCirculatingSupply).Methods("GET")
|
|
s.router.Path("/circulating-supply").HandlerFunc(s.GetCirculatingSupply)
|
|
s.router.Path("/total-supply").Queries().HandlerFunc(s.GetTotalSupply).Methods("GET")
|
|
s.router.Path("/total-supply").HandlerFunc(s.GetTotalSupply)
|
|
|
|
// Set up router for node health check.
|
|
s.router.Path("/node-sync").Queries().HandlerFunc(s.GetNodeSync).Methods("GET")
|
|
s.router.Path("/node-sync").HandlerFunc(s.GetNodeSync)
|
|
|
|
// Do serving now.
|
|
utils.Logger().Info().Str("port", GetExplorerPort(s.Port)).Msg("[Explorer] Server started.")
|
|
server := &http.Server{
|
|
Addr: addr,
|
|
Handler: s.router,
|
|
ReadTimeout: 5 * time.Second,
|
|
WriteTimeout: 10 * time.Second,
|
|
IdleTimeout: 120 * time.Second,
|
|
}
|
|
go func() {
|
|
defer func() { utils.Logger().Debug().Msg("[Explorer] Server closed.") }()
|
|
if err := server.ListenAndServe(); err != nil {
|
|
utils.Logger().Warn().Err(err).Msg("[Explorer] Server error.")
|
|
}
|
|
}()
|
|
fmt.Printf("Started Explorer server at: %v:%v\n", s.IP, port)
|
|
return server
|
|
}
|
|
|
|
// GetAddresses serves end-point /addresses, returns size of addresses from address with prefix.
|
|
func (s *Service) GetAddresses(w http.ResponseWriter, r *http.Request) {
|
|
w.Header().Set("Content-Type", "application/json")
|
|
sizeStr := r.FormValue("size")
|
|
prefix := r.FormValue("prefix")
|
|
if sizeStr == "" {
|
|
sizeStr = defaultPageSize
|
|
}
|
|
data := &Data{}
|
|
defer func() {
|
|
if err := json.NewEncoder(w).Encode(data.Addresses); err != nil {
|
|
utils.Logger().Warn().Err(err).Msg("cannot JSON-encode addresses")
|
|
}
|
|
}()
|
|
|
|
size, err := strconv.Atoi(sizeStr)
|
|
if err != nil || size > maxAddresses {
|
|
w.WriteHeader(http.StatusBadRequest)
|
|
return
|
|
}
|
|
data.Addresses, err = s.Storage.GetAddresses(size, prefix)
|
|
if err != nil {
|
|
w.WriteHeader(http.StatusInternalServerError)
|
|
utils.Logger().Warn().Err(err).Msg("wasn't able to fetch addresses from storage")
|
|
return
|
|
}
|
|
}
|
|
|
|
var (
|
|
// InaccessibleAddresses are a list of known eth addresses that cannot spend ONE tokens.
|
|
InaccessibleAddresses = []ethCommon.Address{
|
|
// one10000000000000000000000000000dead5shlag
|
|
ethCommon.HexToAddress("0x7bDeF7Bdef7BDeF7BDEf7bDef7bdef7bdeF6E7AD"),
|
|
}
|
|
)
|
|
|
|
// InaccessibleAddressInfo ..
|
|
type InaccessibleAddressInfo struct {
|
|
EthAddress ethCommon.Address `json:"eth-address"`
|
|
Address string `json:"address"`
|
|
Balance numeric.Dec `json:"balance"`
|
|
Nonce uint64 `json:"nonce"`
|
|
}
|
|
|
|
// getAllInaccessibleAddresses information according to InaccessibleAddresses
|
|
func (s *Service) getAllInaccessibleAddresses() ([]*InaccessibleAddressInfo, error) {
|
|
state, err := s.blockchain.StateAt(s.blockchain.CurrentHeader().Root())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
accs := []*InaccessibleAddressInfo{}
|
|
for _, addr := range InaccessibleAddresses {
|
|
accs = append(accs, &InaccessibleAddressInfo{
|
|
EthAddress: addr,
|
|
Address: common.MustAddressToBech32(addr),
|
|
Balance: numeric.NewDecFromBigIntWithPrec(state.GetBalance(addr), 18),
|
|
Nonce: state.GetNonce(addr),
|
|
})
|
|
}
|
|
|
|
return accs, nil
|
|
}
|
|
|
|
// getTotalInaccessibleTokens in ONE at the latest header.
|
|
func (s *Service) getTotalInaccessibleTokens() (numeric.Dec, error) {
|
|
addrInfos, err := s.getAllInaccessibleAddresses()
|
|
if err != nil {
|
|
return numeric.Dec{}, err
|
|
}
|
|
|
|
total := numeric.NewDecFromBigIntWithPrec(big.NewInt(0), 18)
|
|
for _, addr := range addrInfos {
|
|
total = total.Add(addr.Balance)
|
|
}
|
|
return total, nil
|
|
}
|
|
|
|
// GetInaccessibleAddressInfo serves /burn-addresses end-point.
|
|
func (s *Service) GetInaccessibleAddressInfo(w http.ResponseWriter, r *http.Request) {
|
|
w.Header().Set("Content-Type", "application/json")
|
|
accInfos, err := s.getAllInaccessibleAddresses()
|
|
if err != nil {
|
|
utils.Logger().Warn().Err(err).Msg("unable to fetch inaccessible addresses")
|
|
w.WriteHeader(http.StatusInternalServerError)
|
|
}
|
|
if err := json.NewEncoder(w).Encode(accInfos); err != nil {
|
|
utils.Logger().Warn().Msg("cannot JSON-encode inaccessible account info")
|
|
w.WriteHeader(http.StatusInternalServerError)
|
|
}
|
|
}
|
|
|
|
// GetCirculatingSupply serves /circulating-supply end-point.
|
|
// Note that known InaccessibleAddresses have their funds removed from the supply for this endpoint.
|
|
func (s *Service) GetCirculatingSupply(w http.ResponseWriter, r *http.Request) {
|
|
w.Header().Set("Content-Type", "application/json")
|
|
circulatingSupply, err := chain.GetCirculatingSupply(context.Background(), s.blockchain)
|
|
if err != nil {
|
|
utils.Logger().Warn().Err(err).Msg("unable to fetch circulating supply")
|
|
w.WriteHeader(http.StatusInternalServerError)
|
|
}
|
|
totalInaccessible, err := s.getTotalInaccessibleTokens()
|
|
if err != nil {
|
|
utils.Logger().Warn().Err(err).Msg("unable to fetch inaccessible tokens")
|
|
w.WriteHeader(http.StatusInternalServerError)
|
|
}
|
|
if err := json.NewEncoder(w).Encode(circulatingSupply.Sub(totalInaccessible)); err != nil {
|
|
utils.Logger().Warn().Msg("cannot JSON-encode circulating supply")
|
|
w.WriteHeader(http.StatusInternalServerError)
|
|
}
|
|
}
|
|
|
|
// GetTotalSupply serves /total-supply end-point.
|
|
// Note that known InaccessibleAddresses have their funds removed from the supply for this endpoint.
|
|
func (s *Service) GetTotalSupply(w http.ResponseWriter, r *http.Request) {
|
|
w.Header().Set("Content-Type", "application/json")
|
|
totalSupply, err := stakingReward.GetTotalTokens(s.blockchain)
|
|
if err != nil {
|
|
utils.Logger().Warn().Err(err).Msg("unable to fetch total supply")
|
|
w.WriteHeader(http.StatusInternalServerError)
|
|
}
|
|
totalInaccessible, err := s.getTotalInaccessibleTokens()
|
|
if err != nil {
|
|
utils.Logger().Warn().Err(err).Msg("unable to fetch inaccessible tokens")
|
|
w.WriteHeader(http.StatusInternalServerError)
|
|
}
|
|
if err := json.NewEncoder(w).Encode(totalSupply.Sub(totalInaccessible)); err != nil {
|
|
utils.Logger().Warn().Msg("cannot JSON-encode total supply")
|
|
w.WriteHeader(http.StatusInternalServerError)
|
|
}
|
|
}
|
|
|
|
// GetNodeSync returns status code 500 if node is not in sync
|
|
func (s *Service) GetNodeSync(w http.ResponseWriter, r *http.Request) {
|
|
w.Header().Set("Content-Type", "application/json")
|
|
sync := !s.stateSync.IsOutOfSync(s.blockchain, false)
|
|
if !sync {
|
|
w.WriteHeader(http.StatusTeapot)
|
|
}
|
|
if err := json.NewEncoder(w).Encode(sync); err != nil {
|
|
utils.Logger().Warn().Msg("cannot JSON-encode total supply")
|
|
w.WriteHeader(http.StatusInternalServerError)
|
|
}
|
|
}
|
|
|
|
// NotifyService notify service.
|
|
func (s *Service) NotifyService(params map[string]interface{}) {}
|
|
|
|
// SetMessageChan sets up message channel to service.
|
|
func (s *Service) SetMessageChan(messageChan chan *msg_pb.Message) {
|
|
s.messageChan = messageChan
|
|
}
|
|
|
|
// APIs for the services.
|
|
func (s *Service) APIs() []rpc.API {
|
|
return nil
|
|
}
|
|
|