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photonapi.go
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package photon
import (
"encoding/binary"
"time"
"github.com/SmartMeshFoundation/Photon/channel"
"github.com/SmartMeshFoundation/Photon/transfer/mtree"
"github.com/SmartMeshFoundation/Photon/params"
"fmt"
"math/big"
"bytes"
"crypto/ecdsa"
"sort"
"github.com/SmartMeshFoundation/Photon/channel/channeltype"
"github.com/SmartMeshFoundation/Photon/log"
"github.com/SmartMeshFoundation/Photon/models"
"github.com/SmartMeshFoundation/Photon/network"
"github.com/SmartMeshFoundation/Photon/network/netshare"
"github.com/SmartMeshFoundation/Photon/pfsproxy"
"github.com/SmartMeshFoundation/Photon/rerr"
"github.com/SmartMeshFoundation/Photon/transfer"
"github.com/SmartMeshFoundation/Photon/utils"
"github.com/ethereum/go-ethereum/common"
)
//API photon for user
/* #nolint */
type API struct {
Photon *Service
}
//NewPhotonAPI create CLI interface.
func NewPhotonAPI(photon *Service) *API {
return &API{Photon: photon}
}
//Address return this node's address
func (r *API) Address() common.Address {
return r.Photon.NodeAddress
}
//Tokens Return a list of the tokens registered with the default registry.
func (r *API) Tokens() (addresses []common.Address) {
tokens, err := r.Photon.dao.GetAllTokens()
if err != nil {
log.Error(fmt.Sprintf("GetAllTokens err %s", err))
return
}
for t := range tokens {
addresses = append(addresses, t)
}
return
}
/*
GetChannelList Returns a list of channels associated with the optionally given
`token_address` and/or `partner_address
Args:
token_address (bin): an optionally provided token address
partner_address (bin): an optionally provided partner address
Return:
A list containing all channels the node participates. Optionally
filtered by a token address and/or partner address.
Raises:
KeyError: An error occurred when the token address is unknown to the node.
*/
func (r *API) GetChannelList(tokenAddress common.Address, partnerAddress common.Address) (cs []*channeltype.Serialization, err error) {
return r.Photon.dao.GetChannelList(tokenAddress, partnerAddress)
}
//GetChannel get channel by address
func (r *API) GetChannel(ChannelIdentifier common.Hash) (c *channeltype.Serialization, err error) {
return r.Photon.dao.GetChannelByAddress(ChannelIdentifier)
}
/*
DepositAndOpenChannel a channel with the peer at `partner_address`
with the given `token_address`.
deposit必须大于0
settleTimeout: 如果为0 表示已经知道通道存在,只是为了存款,如果大于0,表示希望完全创建通道.
此接口并不等待交易打包才返回,因此如果是新创建通道,就算是成功了ch也会是nil
如果是单纯deposit,那么err为nil时,ch一定有效
*/
func (r *API) DepositAndOpenChannel(tokenAddress, partnerAddress common.Address, settleTimeout, revealTimeout int, deposit *big.Int, newChannel bool) (ch *channeltype.Serialization, err error) {
if revealTimeout <= 0 {
revealTimeout = r.Photon.Config.RevealTimeout
}
if newChannel {
if settleTimeout <= 0 {
settleTimeout = r.Photon.Config.SettleTimeout
}
if settleTimeout <= revealTimeout {
err = rerr.ErrChannelInvalidSttleTimeout
return
}
} else {
settleTimeout = 0
}
if deposit.Cmp(utils.BigInt0) <= 0 {
err = rerr.ErrInvalidAmount
return
}
if err = r.checkSmcStatus(); err != nil {
return
}
if newChannel {
_, err = r.Photon.dao.GetChannel(tokenAddress, partnerAddress)
if err == nil {
err = rerr.ErrChannelAlreadExist
return
}
ch = channeltype.NewEmptySerialization()
ch.ChannelIdentifier.ChannelIdentifier = utils.CalcChannelID(tokenAddress, r.Photon.Chain.GetRegistryAddress(), partnerAddress, r.Photon.NodeAddress)
ch.TokenAddressBytes = tokenAddress[:]
ch.OurAddress = r.Photon.NodeAddress
ch.PartnerAddressBytes = partnerAddress[:]
ch.State = channeltype.StateInValid
} else {
ch, err = r.Photon.dao.GetChannel(tokenAddress, partnerAddress)
if err != nil {
err = rerr.ErrChannelNotFound
return
}
if ch.State != channeltype.StateOpened {
err = rerr.ErrChannelState.Append(fmt.Sprintf("can not deposit to %s channel", ch.State))
return
}
}
result := r.Photon.depositAndOpenChannelClient(tokenAddress, partnerAddress, settleTimeout, deposit, newChannel)
err = <-result.Result
return
}
/*
TokenSwapAndWait Start an atomic swap operation by sending a MediatedTransfer with
`maker_amount` of `maker_token` to `taker_address`. Only proceed when a
new valid MediatedTransfer is received with `taker_amount` of
`taker_token`.
*/
func (r *API) TokenSwapAndWait(lockSecretHash string, makerToken, takerToken, makerAddress, takerAddress common.Address,
makerAmount, takerAmount *big.Int, secret string, routeInfo []pfsproxy.FindPathResponse) error {
result, err := r.tokenSwapAsync(lockSecretHash, makerToken, takerToken, makerAddress, takerAddress,
makerAmount, takerAmount, secret, routeInfo)
if err != nil {
return err
}
err = <-result.Result
return err
}
func (r *API) tokenSwapAsync(lockSecretHash string, makerToken, takerToken, makerAddress, takerAddress common.Address,
makerAmount, takerAmount *big.Int, secret string, routeInfo []pfsproxy.FindPathResponse) (result *utils.AsyncResult, err error) {
chs, err := r.Photon.dao.GetChannelList(takerToken, utils.EmptyAddress)
if err != nil || len(chs) == 0 {
err = rerr.ErrTokenNotFound
return
}
chs, err = r.Photon.dao.GetChannelList(makerToken, utils.EmptyAddress)
if err != nil || len(chs) == 0 {
err = rerr.ErrTokenNotFound
return
}
tokenSwap := &TokenSwap{
LockSecretHash: common.HexToHash(lockSecretHash),
Secret: common.HexToHash(secret),
FromToken: makerToken,
FromAmount: new(big.Int).Set(makerAmount),
FromNodeAddress: makerAddress,
ToToken: takerToken,
ToAmount: new(big.Int).Set(takerAmount),
ToNodeAddress: takerAddress,
RouteInfo: routeInfo,
}
result = r.Photon.tokenSwapMakerClient(tokenSwap)
return
}
/*
ExpectTokenSwap Register an expected transfer for this node.
If a MediatedMessage is received for the `maker_asset` with
`maker_amount` then proceed to send a MediatedTransfer to
`maker_address` for `taker_asset` with `taker_amount`.
*/
func (r *API) ExpectTokenSwap(lockSecretHash string, makerToken, takerToken, makerAddress, takerAddress common.Address,
makerAmount, takerAmount *big.Int, routeInfo []pfsproxy.FindPathResponse) (err error) {
chs, err := r.Photon.dao.GetChannelList(takerToken, utils.EmptyAddress)
if err != nil || len(chs) == 0 {
err = rerr.ErrTokenNotFound
return
}
chs, err = r.Photon.dao.GetChannelList(makerToken, utils.EmptyAddress)
if err != nil || len(chs) == 0 {
err = rerr.ErrTokenNotFound
return
}
tokenSwap := &TokenSwap{
LockSecretHash: common.HexToHash(lockSecretHash),
FromToken: makerToken,
FromAmount: new(big.Int).Set(makerAmount),
FromNodeAddress: makerAddress,
ToToken: takerToken,
ToAmount: new(big.Int).Set(takerAmount),
ToNodeAddress: takerAddress,
RouteInfo: routeInfo,
}
r.Photon.tokenSwapTakerClient(tokenSwap)
return nil
}
//GetNodeNetworkState Returns the currently network status of `node_address
func (r *API) GetNodeNetworkState(nodeAddress common.Address) (deviceType string, isOnline bool) {
return r.Photon.Protocol.GetNetworkStatus(nodeAddress)
}
//StartHealthCheckFor Returns the currently network status of `node_address`.
func (r *API) StartHealthCheckFor(nodeAddress common.Address) (deviceType string, isOnline bool) {
r.Photon.startHealthCheckFor(nodeAddress)
return r.GetNodeNetworkState(nodeAddress)
}
//GetTokenList returns all available tokens
func (r *API) GetTokenList() (tokens []common.Address) {
tokensmap, err := r.Photon.dao.GetAllTokens()
if err != nil {
log.Error(fmt.Sprintf("GetAllTokens err %s", err))
}
for k := range tokensmap {
tokens = append(tokens, k)
}
return
}
//GetTokenTokenNetorks return all tokens and token networks
func (r *API) GetTokenTokenNetorks() (tokens []string) {
tokenMap, err := r.Photon.dao.GetAllTokens()
if err != nil {
log.Error(fmt.Sprintf("GetAllTokens err %s", err))
}
for k := range tokenMap {
tokens = append(tokens, k.String())
}
return
}
//Transfer transfer and wait
func (r *API) Transfer(token common.Address, amount *big.Int, target common.Address, secret common.Hash, timeout time.Duration, isDirectTransfer bool, data string, routeInfo []pfsproxy.FindPathResponse) (result *utils.AsyncResult, err error) {
result, err = r.TransferInternal(token, amount, target, secret, isDirectTransfer, data, routeInfo)
if err != nil {
return
}
if timeout > 0 {
timeoutCh := time.After(timeout)
select {
case <-timeoutCh:
return result, rerr.ErrTransferTimeout
case err = <-result.Result:
}
} else {
err = <-result.Result
}
return result, err
}
// TransferAsync :
func (r *API) TransferAsync(tokenAddress common.Address, amount *big.Int, target common.Address, secret common.Hash, isDirectTransfer bool, data string, routeInfo []pfsproxy.FindPathResponse) (result *utils.AsyncResult, err error) {
result, err = r.TransferInternal(tokenAddress, amount, target, secret, isDirectTransfer, data, routeInfo)
if err != nil {
return
}
timeoutCh := time.After(300 * time.Millisecond)
select {
case <-timeoutCh:
return result, nil
case err = <-result.Result:
}
return result, err
}
//TransferInternal :
func (r *API) TransferInternal(tokenAddress common.Address, amount *big.Int, target common.Address, secret common.Hash, isDirectTransfer bool, data string, routeInfo []pfsproxy.FindPathResponse) (result *utils.AsyncResult, err error) {
log.Debug(fmt.Sprintf("initiating transfer initiator=%s target=%s token=%s amount=%d secret=%s,currentblock=%d",
r.Photon.NodeAddress.String(), target.String(), tokenAddress.String(), amount, secret.String(), r.Photon.GetBlockNumber()))
result = r.Photon.transferAsyncClient(tokenAddress, amount, target, secret, isDirectTransfer, data, routeInfo)
return
}
// AllowRevealSecret :
// 1. find state manager by lockSecretHash and tokenAddress
// 2. check secret matches lockSecretHash or not
// 3. remove the predictor
func (r *API) AllowRevealSecret(lockSecretHash common.Hash, tokenAddress common.Address) (err error) {
result := r.Photon.allowRevealSecretClient(lockSecretHash, tokenAddress)
err = <-result.Result
return
}
// RegisterSecret :
func (r *API) RegisterSecret(secret common.Hash, tokenAddress common.Address) (err error) {
result := r.Photon.registerSecretClient(secret, tokenAddress)
err = <-result.Result
return
}
// TransferDataResponse :
type TransferDataResponse struct {
Initiator string `json:"initiator_address"`
Target string `json:"target_address"`
Token string `json:"token_address"`
Amount *big.Int `json:"amount"`
Secret string `json:"secret"`
LockSecretHash string `json:"lock_secret_hash"`
Expiration int64 `json:"expiration"`
Fee *big.Int `json:"fee"`
IsDirect bool `json:"is_direct"`
}
// GetUnfinishedReceivedTransfer :
func (r *API) GetUnfinishedReceivedTransfer(lockSecretHash common.Hash, tokenAddress common.Address) (resp *TransferDataResponse) {
result := r.Photon.getUnfinishedReceivedTransferClient(lockSecretHash, tokenAddress)
err := <-result.Result
if err != nil {
log.Error(fmt.Sprintf("GetUnfinishedReceivedTransfer err %s", err))
return nil
}
return result.Tag.(*TransferDataResponse)
}
//Close a channel opened with `partner_address` for the given `token_address`. return when state has been +d to database
func (r *API) Close(tokenAddress, partnerAddress common.Address) (c *channeltype.Serialization, err error) {
if err = r.checkSmcStatus(); err != nil {
return
}
c, err = r.Photon.dao.GetChannel(tokenAddress, partnerAddress)
if err != nil {
return
}
//send close channel request
result := r.Photon.closeChannelClient(c.ChannelIdentifier.ChannelIdentifier)
err = <-result.Result
if err != nil {
return
}
//reload data from database,
return r.Photon.dao.GetChannelByAddress(c.ChannelIdentifier.ChannelIdentifier)
}
//Settle a closed channel with `partner_address` for the given `token_address`.return when state has been updated to database
func (r *API) Settle(tokenAddress, partnerAddress common.Address) (c *channeltype.Serialization, err error) {
if err = r.checkSmcStatus(); err != nil {
return
}
c, err = r.Photon.dao.GetChannel(tokenAddress, partnerAddress)
if c.State == channeltype.StateOpened {
err = rerr.InvalidState("channel is still open")
return
}
//send settle request
result := r.Photon.settleChannelClient(c.ChannelIdentifier.ChannelIdentifier)
err = <-result.Result
log.Trace(fmt.Sprintf("%s settled finish , err %v", c.ChannelIdentifier, err))
if err != nil {
return
}
//reload data from database, this channel has been removed. 这时候channel应该是settling状态
return r.Photon.dao.GetChannelByAddress(c.ChannelIdentifier.ChannelIdentifier)
}
//CooperativeSettle a channel opened with `partner_address` for the given `token_address`. return when state has been updated to database
func (r *API) CooperativeSettle(tokenAddress, partnerAddress common.Address) (c *channeltype.Serialization, err error) {
if err = r.checkSmcStatus(); err != nil {
return
}
c, err = r.Photon.dao.GetChannel(tokenAddress, partnerAddress)
if c.State != channeltype.StateOpened && c.State != channeltype.StatePrepareForCooperativeSettle {
err = rerr.InvalidState("channel must be open")
return
}
//send settle request
result := r.Photon.cooperativeSettleChannelClient(c.ChannelIdentifier.ChannelIdentifier)
err = <-result.Result
log.Trace(fmt.Sprintf("%s CooperativeSettle finish , err %v", c.ChannelIdentifier, err))
if err != nil {
return
}
//reload data from database, this channel has been removed.
return r.Photon.dao.GetChannelByAddress(c.ChannelIdentifier.ChannelIdentifier)
}
//PrepareForCooperativeSettle mark a channel prepared for settle, return when state has been updated to database
func (r *API) PrepareForCooperativeSettle(tokenAddress, partnerAddress common.Address) (c *channeltype.Serialization, err error) {
c, err = r.Photon.dao.GetChannel(tokenAddress, partnerAddress)
if c.State != channeltype.StateOpened {
err = rerr.InvalidState("channel must be open")
return
}
//send settle request
result := r.Photon.markChannelForCooperativeSettleClient(c.ChannelIdentifier.ChannelIdentifier)
err = <-result.Result
log.Trace(fmt.Sprintf("%s PrepareForCooperativeSettle finish , err %v", c.ChannelIdentifier, err))
if err != nil {
return
}
//reload data from database, this channel has been removed.
return r.Photon.dao.GetChannelByAddress(c.ChannelIdentifier.ChannelIdentifier)
}
//CancelPrepareForCooperativeSettle cancel a mark. return when state has been updated to database
func (r *API) CancelPrepareForCooperativeSettle(tokenAddress, partnerAddress common.Address) (c *channeltype.Serialization, err error) {
c, err = r.Photon.dao.GetChannel(tokenAddress, partnerAddress)
if c.State != channeltype.StatePrepareForCooperativeSettle {
err = rerr.InvalidState("channel must be open")
return
}
//send settle request
result := r.Photon.cancelMarkChannelForCooperativeSettleClient(c.ChannelIdentifier.ChannelIdentifier)
err = <-result.Result
log.Trace(fmt.Sprintf("%s CancelPrepareForCooperativeSettle finish , err %v", c.ChannelIdentifier, err))
if err != nil {
return
}
//reload data from database, this channel has been removed.
return r.Photon.dao.GetChannelByAddress(c.ChannelIdentifier.ChannelIdentifier)
}
//Withdraw on a channel opened with `partner_address` for the given `token_address`. return when state has been updated to database
func (r *API) Withdraw(tokenAddress, partnerAddress common.Address, amount *big.Int) (c *channeltype.Serialization, err error) {
if err = r.checkSmcStatus(); err != nil {
return
}
c, err = r.Photon.dao.GetChannel(tokenAddress, partnerAddress)
if c.State != channeltype.StateOpened && c.State != channeltype.StatePrepareForWithdraw {
err = rerr.InvalidState("channel must be open")
return
}
if c.OurBalance().Cmp(amount) < 0 {
err = rerr.ErrArgumentError.Printf("invalid withdraw amount, availabe=%s,want=%s", c.OurBalance(), amount)
return
}
//send settle request
result := r.Photon.withdrawClient(c.ChannelIdentifier.ChannelIdentifier, amount)
err = <-result.Result
log.Trace(fmt.Sprintf("%s withdraw finish , err %v", c.ChannelIdentifier, err))
if err != nil {
return
}
//reload data from database, this channel has been removed.
return r.Photon.dao.GetChannelByAddress(c.ChannelIdentifier.ChannelIdentifier)
}
//PrepareForWithdraw mark a channel prepared for withdraw, return when state has been updated to database
func (r *API) PrepareForWithdraw(tokenAddress, partnerAddress common.Address) (c *channeltype.Serialization, err error) {
c, err = r.Photon.dao.GetChannel(tokenAddress, partnerAddress)
if c.State != channeltype.StateOpened {
err = rerr.InvalidState("channel must be open")
return
}
//send settle request
result := r.Photon.markWithdrawClient(c.ChannelIdentifier.ChannelIdentifier)
err = <-result.Result
log.Trace(fmt.Sprintf("%s PrepareForWithdraw finish , err %v", c.ChannelIdentifier, err))
if err != nil {
return
}
//reload data from database, this channel has been removed.
return r.Photon.dao.GetChannelByAddress(c.ChannelIdentifier.ChannelIdentifier)
}
//CancelPrepareForWithdraw cancel a mark. return when state has been updated to database
func (r *API) CancelPrepareForWithdraw(tokenAddress, partnerAddress common.Address) (c *channeltype.Serialization, err error) {
c, err = r.Photon.dao.GetChannel(tokenAddress, partnerAddress)
if c.State != channeltype.StatePrepareForWithdraw {
err = rerr.InvalidState("channel must be open")
return
}
//send settle request
result := r.Photon.cancelMarkWithdrawClient(c.ChannelIdentifier.ChannelIdentifier)
err = <-result.Result
log.Trace(fmt.Sprintf("%s CancelPrepareForWithdraw finish , err %v", c.ChannelIdentifier, err))
if err != nil {
return
}
//reload data from database, this channel has been removed.
return r.Photon.dao.GetChannelByAddress(c.ChannelIdentifier.ChannelIdentifier)
}
//GetTokenNetworkEvents return events about this token
func (r *API) GetTokenNetworkEvents(tokenAddress common.Address, fromBlock, toBlock int64) (data []interface{}, err error) {
//type eventData struct {
// /*
// {
// "event_type": "ChannelNew",
// "settle_timeout": 10,
// "netting_channel": "0xc0ea08a2d404d3172d2add29a45be56da40e2949",
// "participant1": "0x4894a542053248e0c504e3def2048c08f73e1ca6",
// "participant2": "0x356857Cd22CBEFccDa4e96AF13b408623473237A"
// }
// */
// EventType string `json:"event_type"`
// SettleTimeout int `json:"settle_timeout"`
// NettingChannel string `json:"netting_channel"`
// Participant1 string `json:"participant1"`
// Participant2 string `json:"participant2"`
// TokenAddress string `json:"token_address"`
//}
//tokens, err := r.Photon.dao.GetAllTokens()
//if err != nil {
// return
//}
//for t, manager := range tokens {
// if tokenAddress == utils.EmptyAddress || t == tokenAddress {
// events, err := r.Photon.BlockChainEvents.GetAllChannelManagerEvents(manager, fromBlock, toBlock)
// if err != nil {
// return nil, err
// }
// for _, e := range events {
// e2 := e.(*blockchain.EventChannelOpen)
// ed := &eventData{
// EventType: e2.EventName,
// SettleTimeout: e2.SettleTimeout,
// NettingChannel: e2.NettingChannelAddress.String(),
// Participant1: e2.Participant1.String(),
// Participant2: e2.Participant2.String(),
// TokenAddress: t.String(),
// }
// data = append(data, ed)
// }
// }
//}
return
}
//GetNetworkEvents all photon events
func (r *API) GetNetworkEvents(fromBlock, toBlock int64) ([]interface{}, error) {
//type eventData struct {
// /*
// "event_type": "TokenAdded",
// "token_address": "0xea674fdde714fd979de3edf0f56aa9716b898ec8",
// "channel_manager_address": "0xc0ea08a2d404d3172d2add29a45be56da40e2949"
// */
// EventType string `json:"event_type"`
// TokenAddress string `json:"token_address"`
// ChannelManagerAddress string `json:"channel_manager_address"`
//}
//events, err := r.Photon.BlockChainEvents.GetAllRegistryEvents(r.Photon.RegistryAddress, fromBlock, toBlock)
//if err != nil {
// return nil, err
//}
//var data []interface{}
//for _, e := range events {
// e2 := e.(*blockchain.EventTokenNetworkCreated)
// ed := &eventData{
// EventType: e2.EventName,
// TokenAddress: e2.TokenAddress.String(),
// ChannelManagerAddress: e2.TokenNetworkAddress.String(),
// }
// data = append(data, ed)
//}
return nil, nil
}
//GetChannelEvents events of this channel
func (r *API) GetChannelEvents(channelIdentifier common.Hash, fromBlock, toBlock int64) (data []transfer.Event, err error) {
//var events []transfer.Event
//events, err = r.Photon.BlockChainEvents.GetAllNettingChannelEvents(channelIdentifier, fromBlock, toBlock)
//if err != nil {
// return
//}
//for _, e := range events {
// m := make(map[string]interface{})
// switch e2 := e.(type) {
// case *blockchain.EventChannelNewBalance:
// m["event_type"] = e2.EventName
// m["participant"] = e2.ParticipantAddress.String()
// m["balance"] = e2.Balance
// m["block_number"] = e2.BlockNumber
// data = append(data, m)
// case *blockchain.EventChannelClosed:
// m["event_type"] = e2.EventName
// m["netting_channel_address"] = e2.ContractAddress.String()
// m["closing_address"] = e2.ClosingAddress.String()
// data = append(data, m)
// case *blockchain.EventChannelSettled:
// m["event_type"] = e2.EventName
// m["netting_channel_address"] = e2.ContractAddress.String()
// m["block_number"] = e2.BlockNumber
// data = append(data, m)
// case *blockchain.EventSecretRevealed:
// m["event_type"] = e2.EventName
// m["netting_channel_address"] = e2.ContractAddress.String()
// m["secret"] = e2.Secret.String()
// data = append(data, m)
// //case *blockchain.EventNonClosingBalanceProofUpdated:
// // m["event_type"] = e2.EventName
// // m["token_address"] = t.String()
// // m["channel_manager_address"] = graph.TokenAddress.String()
// }
//
//}
//
//var photonEvents []*models.InternalEvent
//photonEvents, err = r.Photon.dao.GetEventsInBlockRange(fromBlock, toBlock)
//if err != nil {
// return
//}
////Here choose which photon internal events we want to expose to the end user
//for _, ev := range photonEvents {
// m := make(map[string]interface{})
// switch e2 := ev.EventObject.(type) {
// case *transfer.EventTransferSentSuccess:
// m["event_type"] = "EventTransferSentSuccess"
// m["identifier"] = e2.LockSecretHash
// m["block_number"] = ev.BlockNumber
// m["amount"] = e2.Amount
// m["target"] = e2.Target
// data = append(data, m)
// case *transfer.EventTransferSentFailed:
// m["event_type"] = "EventTransferSentFailed"
// m["identifier"] = e2.LockSecretHash
// m["block_number"] = ev.BlockNumber
// m["reason"] = e2.Reason
// data = append(data, m)
// case *transfer.EventTransferReceivedSuccess:
// m["event_type"] = "EventTransferReceivedSuccess"
// m["identifier"] = e2.LockSecretHash
// m["block_number"] = ev.BlockNumber
// m["amount"] = e2.Amount
// m["initiator"] = e2.Initiator.String()
// data = append(data, m)
// }
//}
return
}
/*
GetSentTransferDetails query sent transfers from dao
*/
func (r *API) GetSentTransferDetails(tokenAddress common.Address, from, to int64) ([]*models.SentTransferDetail, error) {
return r.Photon.dao.GetSentTransferDetailList(tokenAddress, -1, -1, from, to)
}
/*
GetReceivedTransfers query received transfers from dao
*/
func (r *API) GetReceivedTransfers(tokenAddress common.Address, fromBlock, toBlock, fromTime, toTime int64) ([]*models.ReceivedTransfer, error) {
return r.Photon.dao.GetReceivedTransferList(tokenAddress, fromBlock, toBlock, fromTime, toTime)
}
//Stop stop for mobile app
func (r *API) Stop() {
log.Info("calling api stop..")
r.Photon.Stop()
log.Info("stop successful..")
}
type updateTransfer struct {
Nonce uint64 `json:"nonce"`
TransferAmount *big.Int `json:"transfer_amount"`
Locksroot common.Hash `json:"locksroot"`
ExtraHash common.Hash `json:"extra_hash"`
ClosingSignature []byte `json:"closing_signature"`
NonClosingSignature []byte `json:"non_closing_signature"`
}
//第三方服务也负责链上unlock
type unlock struct {
Lock *mtree.Lock `json:"lock"`
MerkleProof []byte `json:"merkle_proof"`
Secret common.Hash `json:"secret"`
Signature []byte `json:"signature"`
}
//需要委托给第三方的 punish证据
// punish proof that is delegated to third-party.
type punish struct {
LockHash common.Hash `json:"lock_hash"` //the whole lock's hash,not lock secret hash
AdditionalHash common.Hash `json:"additional_hash"`
Signature []byte `json:"signature"`
}
//ChannelFor3rd is for 3rd party to call update transfer
type ChannelFor3rd struct {
ChannelIdentifier common.Hash `json:"channel_identifier"`
OpenBlockNumber int64 `json:"open_block_number"`
TokenAddrss common.Address `json:"token_address"`
PartnerAddress common.Address `json:"partner_address"`
UpdateTransfer updateTransfer `json:"update_transfer"`
Unlocks []*unlock `json:"unlocks"`
Punishes []*punish `json:"punishes"`
}
/*
ChannelInformationFor3rdParty generate all information need by 3rd party
*/
func (r *API) ChannelInformationFor3rdParty(ChannelIdentifier common.Hash, thirdAddr common.Address) (result *ChannelFor3rd, err error) {
var sig []byte
c, err := r.GetChannel(ChannelIdentifier)
if err != nil {
return
}
c3 := new(ChannelFor3rd)
c3.ChannelIdentifier = ChannelIdentifier
c3.OpenBlockNumber = c.ChannelIdentifier.OpenBlockNumber
c3.TokenAddrss = c.TokenAddress()
c3.PartnerAddress = c.PartnerAddress()
if c.PartnerBalanceProof == nil {
result = c3
return
}
if c.PartnerBalanceProof.Nonce > 0 {
c3.UpdateTransfer.Nonce = c.PartnerBalanceProof.Nonce
c3.UpdateTransfer.TransferAmount = c.PartnerBalanceProof.TransferAmount
c3.UpdateTransfer.Locksroot = c.PartnerBalanceProof.LocksRoot
c3.UpdateTransfer.ExtraHash = c.PartnerBalanceProof.MessageHash
c3.UpdateTransfer.ClosingSignature = c.PartnerBalanceProof.Signature
sig, err = signBalanceProofFor3rd(c, r.Photon.PrivateKey)
if err != nil {
return
}
c3.UpdateTransfer.NonClosingSignature = sig
}
tree := mtree.NewMerkleTree(c.PartnerLeaves)
var ws []*unlock
for _, l := range c.PartnerLock2UnclaimedLocks() {
proof := channel.ComputeProofForLock(l.Lock, tree)
w := &unlock{
Lock: l.Lock,
Secret: l.Secret,
MerkleProof: mtree.Proof2Bytes(proof.MerkleProof),
}
w.Signature, err = signUnlockFor3rd(c, w, thirdAddr, r.Photon.PrivateKey)
//log.Trace(fmt.Sprintf("prootf=%s", utils.StringInterface(proof, 3)))
ws = append(ws, w)
}
c3.Unlocks = ws
var ps []*punish
for _, annouceDisposed := range r.Photon.dao.GetChannelAnnounceDisposed(c.ChannelIdentifier.ChannelIdentifier) {
//跳过历史 channel
// omit history channel
if annouceDisposed.OpenBlockNumber != c.ChannelIdentifier.OpenBlockNumber {
continue
}
p := &punish{
LockHash: common.BytesToHash(annouceDisposed.LockHash),
AdditionalHash: annouceDisposed.AdditionalHash,
Signature: annouceDisposed.Signature,
}
ps = append(ps, p)
}
c3.Punishes = ps
result = c3
return
}
//make sure PartnerBalanceProof is not nil
func signBalanceProofFor3rd(c *channeltype.Serialization, privkey *ecdsa.PrivateKey) (sig []byte, err error) {
if c.PartnerBalanceProof == nil {
log.Error(fmt.Sprintf("PartnerBalanceProof is nil,must ber a error"))
return nil, rerr.ErrChannelBalanceProofNil.Append("empty PartnerBalanceProof")
}
buf := new(bytes.Buffer)
_, err = buf.Write(params.ContractSignaturePrefix)
_, err = buf.Write([]byte(params.ContractBalanceProofDelegateMessageLength))
_, err = buf.Write(utils.BigIntTo32Bytes(c.PartnerBalanceProof.TransferAmount))
_, err = buf.Write(c.PartnerBalanceProof.LocksRoot[:])
err = binary.Write(buf, binary.BigEndian, c.PartnerBalanceProof.Nonce)
_, err = buf.Write(c.ChannelIdentifier.ChannelIdentifier[:])
err = binary.Write(buf, binary.BigEndian, c.ChannelIdentifier.OpenBlockNumber)
_, err = buf.Write(utils.BigIntTo32Bytes(params.ChainID))
if err != nil {
log.Error(fmt.Sprintf("buf write error %s", err))
}
dataToSign := buf.Bytes()
return utils.SignData(privkey, dataToSign)
}
func signUnlockFor3rd(c *channeltype.Serialization, u *unlock, thirdAddress common.Address, privkey *ecdsa.PrivateKey) (sig []byte, err error) {
buf := new(bytes.Buffer)
_, err = buf.Write(params.ContractSignaturePrefix)
_, err = buf.Write([]byte(params.ContractUnlockDelegateProofMessageLength))
_, err = buf.Write(utils.BigIntTo32Bytes(c.PartnerBalanceProof.TransferAmount))
_, err = buf.Write(thirdAddress[:])
_, err = buf.Write(utils.BigIntTo32Bytes(big.NewInt(u.Lock.Expiration)))
_, err = buf.Write(utils.BigIntTo32Bytes(u.Lock.Amount))
_, err = buf.Write(u.Lock.LockSecretHash[:])
_, err = buf.Write(c.ChannelIdentifier.ChannelIdentifier[:])
err = binary.Write(buf, binary.BigEndian, c.ChannelIdentifier.OpenBlockNumber)
_, err = buf.Write(utils.BigIntTo32Bytes(params.ChainID))
if err != nil {
log.Error(fmt.Sprintf("buf write error %s", err))
return
}
dataToSign := buf.Bytes()
return utils.SignData(privkey, dataToSign)
}
//EventTransferSentSuccessWrapper wrapper
type EventTransferSentSuccessWrapper struct {
transfer.EventTransferSentSuccess
BlockNumber int64
Name string
}
//EventTransferSentFailedWrapper wrapper
type EventTransferSentFailedWrapper struct {
transfer.EventTransferSentFailed
BlockNumber int64
Name string
}
//EventEventTransferReceivedSuccessWrapper wrapper
type EventEventTransferReceivedSuccessWrapper struct {
transfer.EventTransferReceivedSuccess
BlockNumber int64
Name string
}
// AccountTokenBalanceVo for api
type AccountTokenBalanceVo struct {
TokenAddress string `json:"token_address"`
Balance *big.Int `json:"balance"`
LockedAmount *big.Int `json:"locked_amount"`
}
// GetBalanceByTokenAddress : get account's balance and locked account on token
func (r *API) GetBalanceByTokenAddress(tokenAddress common.Address) (balances []*AccountTokenBalanceVo, err error) {
if tokenAddress == utils.EmptyAddress {
return r.getBalance()
}
tokens := r.GetTokenList()
hasRegistered := false
for _, token := range tokens {
if token == tokenAddress {
hasRegistered = true
}
}
if !hasRegistered {
err = rerr.ErrTokenNotFound
return
}
channels, err := r.GetChannelList(tokenAddress, utils.EmptyAddress)
if err != nil {
return
}
balance := new(AccountTokenBalanceVo)
balance.TokenAddress = tokenAddress.String()
balance.Balance = big.NewInt(0)
balance.LockedAmount = big.NewInt(0)
for _, channel := range channels {
balance.Balance.Add(balance.Balance, channel.OurBalance())
balance.LockedAmount.Add(balance.LockedAmount, channel.OurAmountLocked())
}
return []*AccountTokenBalanceVo{balance}, err
}
// getBalance : get account's balance and locked account on each token
func (r *API) getBalance() (balances []*AccountTokenBalanceVo, err error) {
channels, err := r.GetChannelList(utils.EmptyAddress, utils.EmptyAddress)
if err != nil {
return
}
token2ChannelMap := make(map[common.Address][]*channeltype.Serialization)
for _, channel := range channels {
token2ChannelMap[channel.TokenAddress()] = append(token2ChannelMap[channel.TokenAddress()], channel)
}
for tokenAddress, channels := range token2ChannelMap {
balance := &AccountTokenBalanceVo{
TokenAddress: tokenAddress.String(),
Balance: big.NewInt(0),
LockedAmount: big.NewInt(0),
}
for _, channel := range channels {
balance.Balance.Add(balance.Balance, channel.OurBalance())
balance.LockedAmount.Add(balance.LockedAmount, channel.OurAmountLocked())
}
balances = append(balances, balance)
}
return
}
// ForceUnlock : only for debug
func (r *API) ForceUnlock(channelIdentifier, secret common.Hash) (err error) {
result := r.Photon.forceUnlockClient(secret, channelIdentifier)
err = <-result.Result
return
}
// RegisterSecretOnChain : only for debug
func (r *API) RegisterSecretOnChain(secret common.Hash) (err error) {
result := r.Photon.registerSecretOnChainClient(secret)
err = <-result.Result
return
}
// CancelTransfer : cancel a transfer when haven't send secret
func (r *API) CancelTransfer(lockSecretHash common.Hash, tokenAddress common.Address) error {
result := r.Photon.cancelTransferClient(lockSecretHash, tokenAddress)
return <-result.Result
}
type balanceProof struct {
Nonce uint64 `json:"nonce"`
TransferAmount *big.Int `json:"transfer_amount"`
LocksRoot common.Hash `json:"locks_root"`
ChannelIdentifier common.Hash `json:"channel_identifier"`
OpenBlockNumber int64 `json:"open_block_number"`
MessageHash common.Hash `json:"addition_hash"`
//signature is nonce + transferred_amount + locksroot + channel_identifier + message_hash
Signature []byte `json:"signature"`
}
//ProofForPFS proof for path finding service, test only
type ProofForPFS struct {
BalanceProof balanceProof `json:"balance_proof"`
Signature []byte `json:"balance_signature"`
LockAmount *big.Int `json:"lock_amount"`
}
//BalanceProofForPFS proof for path finding service ,test only
func (r *API) BalanceProofForPFS(channelIdentifier common.Hash) (proof *ProofForPFS, err error) {
ch, err := r.GetChannel(channelIdentifier)
if err != nil {
return
}
proof = &ProofForPFS{
BalanceProof: balanceProof{
Nonce: ch.PartnerBalanceProof.Nonce,
TransferAmount: ch.PartnerBalanceProof.TransferAmount,
LocksRoot: ch.PartnerBalanceProof.LocksRoot,
ChannelIdentifier: ch.ChannelIdentifier.ChannelIdentifier,
OpenBlockNumber: ch.ChannelIdentifier.OpenBlockNumber,
MessageHash: ch.PartnerBalanceProof.MessageHash,
Signature: ch.PartnerBalanceProof.Signature,
},
LockAmount: ch.PartnerAmountLocked(),
}
bpf := &proof.BalanceProof
buf := new(bytes.Buffer)
err = binary.Write(buf, binary.BigEndian, bpf.Nonce)
_, err = buf.Write(utils.BigIntTo32Bytes(bpf.TransferAmount))
_, err = buf.Write(bpf.LocksRoot[:])
_, err = buf.Write(bpf.ChannelIdentifier[:])
err = binary.Write(buf, binary.BigEndian, bpf.OpenBlockNumber)
_, err = buf.Write(bpf.MessageHash[:])
_, err = buf.Write(bpf.Signature)
_, err = buf.Write(utils.BigIntTo32Bytes(proof.LockAmount))
dataToSign := buf.Bytes()
proof.Signature, err = utils.SignData(r.Photon.PrivateKey, dataToSign)
return
}
// NotifyNetworkDown :
func (r *API) NotifyNetworkDown() error {
log.Info(fmt.Sprintf("NotifyNetworkDown from user"))
// smc client
client := r.Photon.Chain.Client
if client.IsConnected() {
//r.Photon.BlockChainEvents.Stop()
client.Client.Close()
}
// xmpp client
if t, ok := r.Photon.Protocol.Transport.(*network.MixTransport); ok {
t.Reconnect()
}
return nil
}
// GetFeePolicy 如果没有启动收费会返回错误,否则返回当前账户设置的收费信息
func (r *API) GetFeePolicy() (fp *models.FeePolicy, err error) {
feeModule, ok := r.Photon.FeePolicy.(*FeeModule)
if !ok {
err = rerr.ErrNotChargeFee
return
}
return feeModule.feePolicy, nil
}
// SetFeePolicy 更新该账户所有的收费信息,不保留历史记录
func (r *API) SetFeePolicy(fp *models.FeePolicy) error {
feeModule, ok := r.Photon.FeePolicy.(*FeeModule)
if !ok {
return rerr.ErrNotChargeFee.Append("photon start without param '--fee', can not set fee policy")
}
return feeModule.SetFeePolicy(fp)
}