core

package
v0.6.3 Latest Latest
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 Go to latest Published: Sep 7, 2023 License: BlueOak-1.0.0 Imports: 48 Imported by: 12

Documentation

Index

Constants

View Source 
const (
	// MakerBotV0 is the bot specifier associated with makerBot. The bot
	// specifier is used to determine how to decode stored program data.
	MakerBotV0 = "MakerV0"

	ErrNoMarkets = dex.ErrorKind("no markets")
)
View Source 
const (
	NoteTypeFeePayment   = "feepayment"
	NoteTypeBondPost     = "bondpost"
	NoteTypeBondRefund   = "bondrefund"
	NoteTypeSend         = "send"
	NoteTypeOrder        = "order"
	NoteTypeMatch        = "match"
	NoteTypeEpoch        = "epoch"
	NoteTypeConnEvent    = "conn"
	NoteTypeBalance      = "balance"
	NoteTypeSpots        = "spots"
	NoteTypeWalletConfig = "walletconfig"
	NoteTypeWalletState  = "walletstate"
	NoteTypeServerNotify = "notify"
	NoteTypeSecurity     = "security"
	NoteTypeUpgrade      = "upgrade"
	NoteTypeBot          = "bot"
	NoteTypeDEXAuth      = "dex_auth"
	NoteTypeFiatRates    = "fiatrateupdate"
	NoteTypeCreateWallet = "createwallet"
	NoteTypeLogin        = "login"
)

Notifications should use the following note type strings.

View Source 
const (
	FreshBookAction       = "book"
	FreshCandlesAction    = "candles"
	BookOrderAction       = "book_order"
	EpochOrderAction      = "epoch_order"
	UnbookOrderAction     = "unbook_order"
	UpdateRemainingAction = "update_remaining"
	CandleUpdateAction    = "candle_update"
	EpochMatchSummary     = "epoch_match_summary"
)
View Source 
const (
	// DefaultFiatCurrency is the currency for displaying assets fiat value.
	DefaultFiatCurrency = "USD"
)
View Source 
const (
	DefaultResponseTimeout = comms.DefaultResponseTimeout
)

DefaultResponseTimeout is the default timeout for responses after a request is successfully sent.

Variables

View Source 
var (

	// ActiveOrdersLogoutErr is returned from logout when there are active
	// orders.
	ActiveOrdersLogoutErr = errors.New("cannot log out with active orders")
)
View Source 
var CertStore = map[dex.Network]map[string][]byte{
	dex.Mainnet: {
		"dex.decred.org:7232": dexDotDecredCert,
	},
	dex.Testnet: {
		"dex-test.ssgen.io:7232": dexTestSSGenCert,
	},
	dex.Simnet: {
		"127.0.0.1:17273": simnetHarnessCert,
	},
}

Functions

func AssetSeedAndPass added in v0.4.0 

func AssetSeedAndPass(assetID uint32, appSeed []byte) ([]byte, []byte)

AssetSeedAndPass derives the wallet seed and password that would be used to create a native wallet for a particular asset and application seed. Depending on external wallet software and their key derivation paths, this seed may be usable for accessing funds outside of DEX applications, e.g. btcwallet.

func CheckTopicLangs added in v0.6.0 

func CheckTopicLangs() (missing, stale map[string][]Topic)

CheckTopicLangs is used to report missing notification translations.

func UnwrapErr added in v0.5.0 

func UnwrapErr(err error) error

UnwrapErr returns the result of calling the Unwrap method on err, until it returns a non-wrapped error.

Types

type Account added in v0.2.0 

type Account struct {
	Host          string `json:"host"`
	AccountID     string `json:"accountID"`
	PrivKey       string `json:"privKey"`
	DEXPubKey     string `json:"DEXPubKey"`
	Cert          string `json:"cert"`
	FeeCoin       string `json:"feeCoin,omitempty"`       // DEPRECATED, remains for old accounts
	FeeProofSig   string `json:"feeProofSig,omitempty"`   // DEPRECATED
	FeeProofStamp uint64 `json:"feeProofStamp,omitempty"` // DEPRECATED
}

Account holds data returned from AccountExport.

type BalanceNote 

type BalanceNote struct {
	db.Notification
	AssetID uint32         `json:"assetID"`
	Balance *WalletBalance `json:"balance"`
}

BalanceNote is an update to a wallet's balance.

type BondAsset added in v0.6.0 

type BondAsset struct {
	Version uint16 `json:"ver"`
	ID      uint32 `json:"id"`
	Confs   uint32 `json:"confs"`
	Amt     uint64 `json:"amount"`
}

BondAsset describes the bond asset in terms of it's BIP-44 coin type, required confirmations, and minimum bond amount. There is an analogous msgjson type for server providing supported bond assets.

type BondOptions added in v0.6.0 

type BondOptions struct {
	BondAsset    uint32 `json:"bondAsset"`
	TargetTier   uint64 `json:"targetTier"`
	MaxBondedAmt uint64 `json:"maxBondedAmt"`
}

BondOptions are auto-bond maintenance settings for a particular DEX.

type BondOptionsForm added in v0.6.0 

type BondOptionsForm struct {
	Addr         string  `json:"host"`
	TargetTier   *uint64 `json:"targetTier,omitempty"`
	MaxBondedAmt *uint64 `json:"maxBondedAmt,omitempty"`
	BondAsset    *uint32 `json:"bondAsset,omitempty"`
}

BondOptionsForm is used from the settings page to change the auto-bond maintenance setting for a DEX.

type BondPostNote added in v0.6.0 

type BondPostNote struct {
	db.Notification
	Asset         *uint32 `json:"asset,omitempty"`
	Confirmations *int32  `json:"confirmations,omitempty"`
	Tier          *int64  `json:"tier,omitempty"`
	CoinID        *string `json:"coinID,omitempty"`
	Dex           string  `json:"dex,omitempty"`
}

BondPostNote is a notification regarding bond posting.

type BondRefundNote added in v0.6.0 

type BondRefundNote struct {
	db.Notification
}

BondRefundNote is a notification regarding bond refunds.

type BookFeed 

type BookFeed interface {
	Next() <-chan *BookUpdate
	Close()
	Candles(dur string) error
}

BookFeed manages a channel for receiving order book updates. It is imperative that the feeder (BookFeed).Close() when no longer using the feed.

type BookUpdate 

type BookUpdate struct {
	Action   string      `json:"action"`
	Host     string      `json:"host"`
	MarketID string      `json:"marketID"`
	Payload  interface{} `json:"payload"`
}

BookUpdate is an order book update.

type BotNote added in v0.6.0 

type BotNote struct {
	db.Notification
	Report *BotReport `json:"report"`
}

BotNote is a note that describes the operation of a automated trading bot.

type BotOrder added in v0.6.0 

type BotOrder struct {
	Host     string            `json:"host"`
	MarketID string            `json:"marketID"`
	OrderID  dex.Bytes         `json:"orderID"`
	Status   order.OrderStatus `json:"status"`
}

BotOrder identifies an order controlled by an bot program.

type BotReport added in v0.6.0 

type BotReport struct {
	ProgramID uint64        `json:"programID"`
	Program   *MakerProgram `json:"program"`
	Running   bool          `json:"running"`
	Orders    []*BotOrder   `json:"orders"`
}

BotReport is a report for the status of a bot.

type CandleUpdate added in v0.4.0 

type CandleUpdate struct {
	Dur          string          `json:"dur"`
	DurMilliSecs uint64          `json:"ms"`
	Candle       *candles.Candle `json:"candle"`
}

type CandlesPayload added in v0.4.0 

type CandlesPayload struct {
	Dur          string           `json:"dur"`
	DurMilliSecs uint64           `json:"ms"`
	Candles      []msgjson.Candle `json:"candles"`
}

type Coin added in v0.2.0 

type Coin struct {
	ID       dex.Bytes `json:"id"`
	StringID string    `json:"stringID"`
	AssetID  uint32    `json:"assetID"`
	Symbol   string    `json:"symbol"`
	// Confs is populated only if this is a swap coin and we are waiting for
	// confirmations e.g. when this is the maker's swap and we're in
	// MakerSwapCast, or this is the takers swap, and we're in TakerSwapCast.
	Confs *Confirmations `json:"confs,omitempty"`
}

Coin encodes both the coin ID and the asset-dependent string representation of the coin ID.

func NewCoin added in v0.2.0 

func NewCoin(assetID uint32, coinID []byte) *Coin

NewCoin constructs a new Coin.

func (*Coin) SetConfirmations added in v0.2.0 

func (c *Coin) SetConfirmations(confs, confReq int64)

SetConfirmations sets the Confs field of the Coin.

type Config 

type Config struct {
	// DBPath is a filepath to use for the client database. If the database does
	// not already exist, it will be created.
	DBPath string
	// Net is the current network.
	Net dex.Network
	// Logger is the Core's logger and is also used to create the sub-loggers
	// for the asset backends.
	Logger dex.Logger
	// Onion is the address (host:port) of a Tor proxy for use with DEX hosts
	// with a .onion address. To use Tor with regular DEX addresses as well, set
	// TorProxy.
	Onion string
	// TorProxy specifies the address of a Tor proxy server.
	TorProxy string
	// TorIsolation specifies whether to enable Tor circuit isolation.
	TorIsolation bool
	// Language. A BCP 47 language tag. Default is en-US.
	Language string

	// NoAutoWalletLock instructs Core to skip locking the wallet on shutdown or
	// logout. This can be helpful if the user wants the wallet to remain
	// unlocked. e.g. They started with the wallet unlocked, or they intend to
	// start Core again and wish to avoid the time to unlock a locked wallet on
	// startup.
	NoAutoWalletLock bool // zero value is legacy behavior
	// NoAutoDBBackup instructs the DB to skip the creation of a backup DB file
	// on shutdown. This is useful if the consumer is using the BackupDB method,
	// or simply creating manual backups of the DB file after shutdown.
	NoAutoDBBackup bool // zero value is legacy behavior
	// UnlockCoinsOnLogin indicates that on wallet connect during login, or on
	// creation of a new wallet, all coins with the wallet should be unlocked.
	UnlockCoinsOnLogin bool
	// ExtensionModeFile is the path to a file that specifies configuration
	// for running core in extension mode, which gives the caller options for
	// e.g. limiting the ability to configure wallets.
	ExtensionModeFile string
}

Config is the configuration for the Core.

type Confirmations added in v0.2.0 

type Confirmations struct {
	Count    int64 `json:"count"`
	Required int64 `json:"required"`
}

Confirmations is the confirmation count and confirmation requirement of a Coin.

type ConnEventNote 

type ConnEventNote struct {
	db.Notification
	Host             string                 `json:"host"`
	ConnectionStatus comms.ConnectionStatus `json:"connectionStatus"`
}

ConnEventNote is a notification regarding individual DEX connection status.

type Core 

type Core struct {
	// contains filtered or unexported fields
}

Core is the core client application. Core manages DEX connections, wallets, database access, match negotiation and more.

func New 

func New(cfg *Config) (*Core, error)

New is the constructor for a new Core.

func (*Core) AccelerateOrder added in v0.5.0 

func (c *Core) AccelerateOrder(pw []byte, oidB dex.Bytes, newFeeRate uint64) (string, error)

AccelerateOrder will use the Child-Pays-For-Parent technique to accelerate the swap transactions in an order.

func (*Core) AccelerationEstimate added in v0.5.0 

func (c *Core) AccelerationEstimate(oidB dex.Bytes, newFeeRate uint64) (uint64, error)

AccelerationEstimate returns the amount of funds that would be needed to accelerate the swap transactions in an order to a desired fee rate.

func (*Core) AccountDisable added in v0.2.0 

func (c *Core) AccountDisable(pw []byte, addr string) error

AccountDisable is used to disable an account by given host and application password.

func (*Core) AccountExport added in v0.2.0 

func (c *Core) AccountExport(pw []byte, host string) (*Account, []*db.Bond, error)

AccountExport is used to retrieve account by host for export.

func (*Core) AccountImport added in v0.2.0 

func (c *Core) AccountImport(pw []byte, acct *Account, bonds []*db.Bond) error

AccountImport is used import an existing account into the db.

func (*Core) AckNotes 

func (c *Core) AckNotes(ids []dex.Bytes)

AckNotes sets the acknowledgement field for the notifications.

func (*Core) AddDEX added in v0.6.0 

func (c *Core) AddDEX(dexAddr string, certI interface{}) error

AddDEX configures a view-only DEX connection. This allows watching trade activity without setting up account keys or communicating account identity with the DEX. DiscoverAccount, Post Bond or Register (deprecated) may be used to set up a trading account for this DEX if required.

func (*Core) AddWalletPeer added in v0.6.0 

func (c *Core) AddWalletPeer(assetID uint32, address string) error

AddWalletPeer connects the wallet to a new peer, and also persists this peer to be connected to on future startups.

func (*Core) AssetBalance 

func (c *Core) AssetBalance(assetID uint32) (*WalletBalance, error)

AssetBalance retrieves and updates the current wallet balance.

func (*Core) AutoWalletConfig 

func (c *Core) AutoWalletConfig(assetID uint32, walletType string) (map[string]string, error)

AutoWalletConfig attempts to load setting from a wallet package's asset.WalletInfo.DefaultConfigPath. If settings are not found, an empty map is returned.

func (*Core) BackupDB added in v0.4.2 

func (c *Core) BackupDB(dst string, overwrite, compact bool) error

BackupDB makes a backup of the database at the specified location, optionally overwriting any existing file and compacting the database.

func (*Core) BondsFeeBuffer added in v0.6.0 

func (c *Core) BondsFeeBuffer(assetID uint32) (uint64, error)

BondsFeeBuffer suggests how much extra may be required for the transaction fees part of bond reserves when bond rotation is enabled. This may be used to inform the consumer how much extra (beyond double the bond amount) is required to facilitate uninterrupted maintenance of a target trading tier.

func (*Core) Book 

func (c *Core) Book(dex string, base, quote uint32) (*OrderBook, error)

Book fetches the order book. If a subscription doesn't exist, one will be attempted and immediately closed.

func (*Core) Cancel 

func (c *Core) Cancel(pw []byte, oidB dex.Bytes) error

func (*Core) ChangeAppPass added in v0.2.0 

func (c *Core) ChangeAppPass(appPW, newAppPW []byte) error

ChangeAppPass updates the application password to the provided new password after validating the current password.

func (*Core) CloseWallet 

func (c *Core) CloseWallet(assetID uint32) error

CloseWallet closes the wallet for the specified asset. The wallet cannot be closed if there are active negotiations for the asset.

func (*Core) ConnectWallet 

func (c *Core) ConnectWallet(assetID uint32) error

ConnectWallet connects to the wallet without unlocking.

func (*Core) CreateBot added in v0.6.0 

func (c *Core) CreateBot(pw []byte, botType string, pgm *MakerProgram) (uint64, error)

CreateBot creates and starts a market-maker bot.

func (*Core) CreateWallet 

func (c *Core) CreateWallet(appPW, walletPW []byte, form *WalletForm) error

CreateWallet creates a new exchange wallet.

func (*Core) DeleteArchivedRecords added in v0.5.0 

func (c *Core) DeleteArchivedRecords(olderThan *time.Time, matchesFile, ordersFile string) (int, error)

DeleteArchivedRecords deletes archived matches from the database and returns the total number of records deleted. Optionally set a time to delete older records and file paths to save deleted records as comma separated values. If a nil *time.Time is provided, current time is used.

func (*Core) DeleteArchivedRecordsWithBackup added in v0.6.0 

func (c *Core) DeleteArchivedRecordsWithBackup(olderThan *time.Time, saveMatchesToFile, saveOrdersToFile bool) (string, int, error)

DeleteArchivedRecordsWithBackup is like DeleteArchivedRecords but the required filepaths are provided by Core and the path where archived records are stored is returned.

func (*Core) DiscoverAccount added in v0.4.0 

func (c *Core) DiscoverAccount(dexAddr string, appPW []byte, certI interface{}) (*Exchange, bool, error)

DiscoverAccount fetches the DEX server's config, and if the server supports the new deterministic account derivation scheme by providing its public key in the config response, DiscoverAccount also checks if the account is already paid. If the returned paid value is true, the account is ready for immediate use. If paid is false, Register should be used to complete the registration. For an older server that does not provide its pubkey in the config response, paid will always be false and the user should proceed to use Register.

The purpose of DiscoverAccount is existing account discovery when the client has been restored from seed. As such, DiscoverAccount is not strictly necessary to register on a DEX, and Register may be called directly, although it requires the expected fee amount as an additional input and it will pay the fee if the account is not discovered and paid.

The Tier and BondsPending fields may be consulted to determine if it is still necessary to PostBond (i.e. Tier == 0 && !BondsPending) before trading. The Connected field should be consulted first.

func (*Core) EstimateRegistrationTxFee added in v0.4.3 

func (c *Core) EstimateRegistrationTxFee(host string, certI interface{}, assetID uint32) (uint64, error)

EstimateRegistrationTxFee provides an estimate for the tx fee needed to pay the registration fee for a certain asset. The dex host is required because the dex server is used as a fallback to determine the current fee rate in case the client wallet is unable to do it.

func (*Core) EstimateSendTxFee added in v0.6.0 

func (c *Core) EstimateSendTxFee(address string, assetID uint32, amount uint64, subtract bool) (fee uint64, isValidAddress bool, err error)

EstimateSendTxFee returns an estimate of the tx fee needed to send or withdraw the specified amount.

func (*Core) Exchange added in v0.5.0 

func (c *Core) Exchange(host string) (*Exchange, error)

Exchange returns an exchange with a certain host. It returns an error if no exchange exists at that host.

func (*Core) Exchanges 

func (c *Core) Exchanges() map[string]*Exchange

Exchanges creates a map of *Exchange keyed by host, including markets and orders.

func (*Core) ExportSeed added in v0.4.0 

func (c *Core) ExportSeed(pw []byte) ([]byte, error)

ExportSeed exports the application seed.

func (*Core) FiatRateSources added in v0.5.0 

func (c *Core) FiatRateSources() map[string]bool

FiatRateSources returns a list of fiat rate sources and their individual status.

func (*Core) GetDEXConfig added in v0.2.0 

func (c *Core) GetDEXConfig(dexAddr string, certI interface{}) (*Exchange, error)

GetDEXConfig creates a temporary connection to the specified DEX Server and fetches the full exchange config. The connection is closed after the config is retrieved. An error is returned if user is already registered to the DEX since a DEX connection is already established and the config is accessible via the User or Exchanges methods. A TLS certificate, certI, can be provided as either a string filename, or []byte file contents.

func (*Core) InitializeClient 

func (c *Core) InitializeClient(pw, restorationSeed []byte) error

InitializeClient sets the initial app-wide password and app seed for the client. The seed argument should be left nil unless restoring from seed.

func (*Core) IsInitialized 

func (c *Core) IsInitialized() bool

IsInitialized checks if the app is already initialized.

func (*Core) Login 

func (c *Core) Login(pw []byte) error

Login logs the user in. On the first login after startup or after a logout, this function will connect wallets, resolve active trades, and decrypt account keys for all known DEXes. Otherwise, it will only check whether or not the app pass is correct.

func (*Core) Logout 

func (c *Core) Logout() error

Logout logs the user out

func (*Core) MarketReport added in v0.6.0 

func (c *Core) MarketReport(host string, baseID, quoteID uint32) (*MarketReport, error)

MarketReport generates a summary of oracle price data for a market.

func (*Core) MaxBuy added in v0.2.0 

func (c *Core) MaxBuy(host string, base, quote uint32, rate uint64) (*MaxOrderEstimate, error)

MaxBuy is the maximum-sized *OrderEstimate for a buy order on the specified market. An order rate must be provided, since the number of lots available for trading will vary based on the rate for a buy order (unlike a sell order).

func (*Core) MaxSell added in v0.2.0 

func (c *Core) MaxSell(host string, base, quote uint32) (*MaxOrderEstimate, error)

MaxSell is the maximum-sized *OrderEstimate for a sell order on the specified market.

func (*Core) Network 

func (c *Core) Network() dex.Network

Network returns the current DEX network.

func (*Core) NewDepositAddress 

func (c *Core) NewDepositAddress(assetID uint32) (string, error)

NewDepositAddress retrieves a new deposit address from the specified asset's wallet, saves it to the database, and emits a notification.

func (*Core) NotificationFeed 

func (c *Core) NotificationFeed() <-chan Notification

NotificationFeed returns a new receiving channel for notifications. The channel has capacity 1024, and should be monitored for the lifetime of the Core. Blocking channels are silently ignored.

func (*Core) Notifications added in v0.6.0 

func (c *Core) Notifications(n int) ([]*db.Notification, error)

Notifications loads the latest notifications from the db.

func (*Core) OpenWallet 

func (c *Core) OpenWallet(assetID uint32, appPW []byte) error

OpenWallet opens (unlocks) the wallet for use.

func (*Core) Order 

func (c *Core) Order(oidB dex.Bytes) (*Order, error)

Order fetches a single user order.

func (*Core) Orders 

func (c *Core) Orders(filter *OrderFilter) ([]*Order, error)

Orders fetches a batch of user orders, filtered with the provided OrderFilter.

func (*Core) PostBond added in v0.6.0 

func (c *Core) PostBond(form *PostBondForm) (*PostBondResult, error)

PostBond begins the process of posting a new bond for a new or existing DEX account. On return, the bond transaction will have been broadcast, and when the required number of confirmations is reached, Core will submit the bond for acceptance to the server. A TopicBondConfirmed is emitted when the fully-confirmed bond is accepted. Before the transaction is broadcasted, a prevalidatebond request is sent to ensure the transaction is compliant and (and that the intended server is actually online!). PostBond may be used to create a new account with a bond, or to top-up bond on an existing account. If the account is not yet configured in Core, account discovery will be performed prior to posting a new bond. If account discovery finds an existing account, the connection is established but no additional bond is posted. If no account is discovered on the server, the account is created locally and bond is posted to create the account.

Note that the FeeBuffer field of the form is optional, but it may be provided to ensure that the wallet reserves the amount reported by a preceding call to BondsFeeBuffer, such as during initial wallet funding.

func (*Core) PreAccelerateOrder added in v0.5.0 

func (c *Core) PreAccelerateOrder(oidB dex.Bytes) (*PreAccelerate, error)

PreAccelerateOrder returns information the user can use to decide how much to accelerate stuck swap transactions in an order.

func (*Core) PreOrder added in v0.2.0 

func (c *Core) PreOrder(form *TradeForm) (*OrderEstimate, error)

func (*Core) Ready 

func (c *Core) Ready() <-chan struct{}

Ready returns a channel that is closed when Run completes its initialization tasks and Core becomes ready for use.

func (*Core) ReconfigureWallet 

func (c *Core) ReconfigureWallet(appPW, newWalletPW []byte, form *WalletForm) error

ReconfigureWallet updates the wallet configuration settings, it also updates the password if newWalletPW is non-nil. Do not make concurrent calls to ReconfigureWallet for the same asset.

func (*Core) RecoverWallet added in v0.5.0 

func (c *Core) RecoverWallet(assetID uint32, appPW []byte, force bool) error

RecoverWallet will retrieve some recovery information from the wallet, which may not be possible if the wallet is too corrupted, disconnect and destroy the old wallet, create a new one, and if the recovery information was retrieved from the old wallet, send this information to the new one. If force is false, this will check for active orders involving this asset before initiating a rescan. WARNING: It is ill-advised to initiate a wallet recovery with active orders unless the wallet db is definitely corrupted and even a rescan will not save it.

DO NOT MAKE CONCURRENT CALLS TO THIS FUNCTION WITH THE SAME ASSET.

func (*Core) Register 

func (c *Core) Register(form *RegisterForm) (*RegisterResult, error)

Register registers an account with a new DEX. If an error occurs while fetching the DEX configuration or creating the fee transaction, it will be returned immediately. A goroutine will be started to wait for the requisite confirmations and send the fee notification to the server. Any error returned from that goroutine is sent as a notification.

func (*Core) RemoveWalletPeer added in v0.6.0 

func (c *Core) RemoveWalletPeer(assetID uint32, address string) error

RemoveWalletPeer disconnects from a peer that the user previously added. It will no longer be guaranteed to connect to this peer in the future.

func (*Core) RescanWallet added in v0.4.1 

func (c *Core) RescanWallet(assetID uint32, force bool) error

RescanWallet will issue a Rescan command to the wallet if supported by the wallet implementation. It is up to the underlying wallet backend if and how to implement this functionality. It may be asynchronous. Core will emit wallet state notifications until the rescan is complete. If force is false, this will check for active orders involving this asset before initiating a rescan. WARNING: It is ill-advised to initiate a wallet rescan with active orders unless as a last ditch effort to get the wallet to recognize a transaction needed to complete a swap.

func (*Core) RetireBot added in v0.6.0 

func (c *Core) RetireBot(pgmID uint64) error

RetireBot stops a bot and deletes its program from the database.

func (*Core) Run 

func (c *Core) Run(ctx context.Context)

Run runs the core. Satisfies the runner.Runner interface.

func (*Core) Send added in v0.5.0 

func (c *Core) Send(pw []byte, assetID uint32, value uint64, address string, subtract bool) (asset.Coin, error)

Send initiates either send or withdraw from an exchange wallet. if subtract is true, fees are subtracted from the value else fees are taken from the exchange wallet. The client password must be provided as an additional verification.

func (*Core) SetWalletPassword 

func (c *Core) SetWalletPassword(appPW []byte, assetID uint32, newPW []byte) error

SetWalletPassword updates the (encrypted) password for the wallet. Returns passwordErr if provided newPW is nil. The wallet will be connected if it is not already.

func (*Core) StartBot added in v0.6.0 

func (c *Core) StartBot(pw []byte, pgmID uint64) error

StartBot starts an existing market-maker bot.

func (*Core) StopBot added in v0.6.0 

func (c *Core) StopBot(pgmID uint64) error

StopBot stops a running market-maker bot. Stopping the bot cancels all existing orders.

func (*Core) SupportedAssets 

func (c *Core) SupportedAssets() map[uint32]*SupportedAsset

SupportedAssets returns a map of asset information for supported assets.

func (*Core) SyncBook 

func (c *Core) SyncBook(host string, base, quote uint32) (BookFeed, error)

SyncBook subscribes to the order book and returns the book and a BookFeed to receive order book updates. The BookFeed must be Close()d when it is no longer in use.

func (*Core) ToggleRateSourceStatus added in v0.5.0 

func (c *Core) ToggleRateSourceStatus(source string, disable bool) error

ToggleRateSourceStatus toggles a fiat rate source status. If disable is true, the fiat rate source is disabled, otherwise the rate source is enabled.

func (*Core) ToggleWalletStatus added in v0.6.0 

func (c *Core) ToggleWalletStatus(assetID uint32, disable bool) error

ToggleWalletStatus changes a wallet's status to either disabled or enabled.

func (*Core) Trade 

func (c *Core) Trade(pw []byte, form *TradeForm) (*Order, error)

Trade is used to place a market or limit order.

func (*Core) TradeAsync added in v0.6.0 

func (c *Core) TradeAsync(pw []byte, form *TradeForm) (*InFlightOrder, error)

TradeAsync is like Trade but a temporary order is returned before order server validation. This helps handle some issues related to UI/UX where server response might take a fairly long time (15 - 20s).

func (*Core) UpdateBondOptions added in v0.6.0 

func (c *Core) UpdateBondOptions(form *BondOptionsForm) error

UpdateBondOptions sets the bond rotation options for a DEX host, including the target trading tier, the preferred asset to use for bonds, and the maximum amount allowable to be locked in bonds.

func (*Core) UpdateBotProgram added in v0.6.0 

func (c *Core) UpdateBotProgram(pgmID uint64, pgm *MakerProgram) error

UpdateBotProgram updates the program of an existing market-maker bot.

func (*Core) UpdateCert added in v0.5.0 

func (c *Core) UpdateCert(host string, cert []byte) error

UpdateCert attempts to connect to a server using a new TLS certificate. If the connection is successful, then the cert in the database is updated. Updating cert for already connected dex will return an error.

func (*Core) UpdateDEXHost added in v0.5.0 

func (c *Core) UpdateDEXHost(oldHost, newHost string, appPW []byte, certI interface{}) (*Exchange, error)

UpdateDEXHost updates the host for a connection to a dex. The dex at oldHost and newHost must be the same dex, which means that the dex at both hosts use the same public key.

func (*Core) User 

func (c *Core) User() *User

User is a thread-safe getter for the User.

func (*Core) ValidateAddress added in v0.6.0 

func (c *Core) ValidateAddress(address string, assetID uint32) (bool, error)

ValidateAddress checks that the provided address is valid.

func (*Core) WalletLogFilePath added in v0.4.1 

func (c *Core) WalletLogFilePath(assetID uint32) (string, error)

WalletLogFilePath returns the path to the wallet's log file.

func (*Core) WalletPeers added in v0.6.0 

func (c *Core) WalletPeers(assetID uint32) ([]*asset.WalletPeer, error)

WalletPeers returns a list of peers that a wallet is connected to. It also returns the user added peers that the wallet is not connected to.

func (*Core) WalletRestorationInfo added in v0.5.0 

func (c *Core) WalletRestorationInfo(pw []byte, assetID uint32) ([]*asset.WalletRestoration, error)

WalletRestorationInfo returns information about how to restore the currently loaded wallet for assetID in various external wallet software. This function will return an error if the currently loaded wallet for assetID does not implement the WalletRestorer interface.

func (*Core) WalletSettings 

func (c *Core) WalletSettings(assetID uint32) (map[string]string, error)

WalletSettings fetches the current wallet configuration details from the database.

func (*Core) WalletState 

func (c *Core) WalletState(assetID uint32) *WalletState

WalletState returns the *WalletState for the asset ID.

func (*Core) Wallets 

func (c *Core) Wallets() []*WalletState

Wallets creates a slice of WalletState for all known wallets.

func (*Core) Withdraw 

func (c *Core) Withdraw(pw []byte, assetID uint32, value uint64, address string) (asset.Coin, error)

Withdraw initiates a withdraw from an exchange wallet. The client password must be provided as an additional verification. This method is DEPRECATED. Use Send with the subtract option instead.

type DEXAuthNote 

type DEXAuthNote struct {
	db.Notification
	Host          string `json:"host"`
	Authenticated bool   `json:"authenticated"`
}

DEXAuthNote is a notification regarding individual DEX authentication status.

type EpochNotification 

type EpochNotification struct {
	db.Notification
	Host     string `json:"host"`
	MarketID string `json:"marketID"`
	Epoch    uint64 `json:"epoch"`
}

EpochNotification is a data notification that a new epoch has begun.

func (*EpochNotification) String 

func (on *EpochNotification) String() string

String supplements db.Notification's Stringer with the Epoch index.

type Error 

type Error struct {
	// contains filtered or unexported fields
}

Error is an error code and a wrapped error.

func (*Error) Code added in v0.4.0 

func (e *Error) Code() *int

Code returns the error code.

func (*Error) Error 

func (e *Error) Error() string

Error returns the error string. Satisfies the error interface.

func (*Error) Unwrap added in v0.5.0 

func (e *Error) Unwrap() error

Unwrap returns the underlying wrapped error.

type Exchange 

type Exchange struct {
	Host             string                       `json:"host"`
	AcctID           string                       `json:"acctID"`
	Markets          map[string]*Market           `json:"markets"`
	Assets           map[uint32]*dex.Asset        `json:"assets"`
	BondExpiry       uint64                       `json:"bondExpiry"`
	BondAssets       map[string]*BondAsset        `json:"bondAssets"`
	ConnectionStatus comms.ConnectionStatus       `json:"connectionStatus"`
	CandleDurs       []string                     `json:"candleDurs"`
	ViewOnly         bool                         `json:"viewOnly"`
	Tier             int64                        `json:"tier"`
	BondOptions      *BondOptions                 `json:"bondOptions"`
	PendingBonds     map[string]*PendingBondState `json:"pendingBonds"`

	// OLD fields for the legacy registration fee (V0PURGE):
	RegFees    map[string]*FeeAsset `json:"regFees"`
	PendingFee *PendingFeeState     `json:"pendingFee,omitempty"`
}

Exchange represents a single DEX with any number of markets.

type ExpirationErr 

type ExpirationErr string

ExpirationErr indicates that the wait.TickerQueue has expired a waiter, e.g. a reported coin was not found before the set expiration time.

func (ExpirationErr) Error 

func (err ExpirationErr) Error() string

Error satisfies the error interface for ExpirationErr.

type ExtensionModeConfig added in v0.6.3 

type ExtensionModeConfig struct {
	// RestrictedWallets are wallets that need restrictions on reconfiguration
	// options.
	RestrictedWallets map[string]struct {
		// HiddenFields are configuration fields (asset.ConfigOption.Key) that
		// should not be displayed to the user.
		HiddenFields []string `json:"hiddenFields"`
		// DisableWalletType indicates that we should not offer the user an
		// an option to change the wallet type.
		DisableWalletType bool `json:"disableWalletType"`
		// DisablePassword indicates that we should not offer the user an option
		// to change the wallet password.
		DisablePassword bool `json:"disablePassword"`
	} `json:"restrictedWallets"`
}

ExtensionModeConfig is configuration for running core in extension mode, primarily for restricting certain wallet reconfiguration options.

type FeeAsset added in v0.2.0 

type FeeAsset BondAsset

FeeAsset is deprecated (V0PURGE), but the same as BondAsset.

type FeeBreakdown 

type FeeBreakdown struct {
	Swap       uint64 `json:"swap"`
	Redemption uint64 `json:"redemption"`
}

FeeBreakdown is categorized fee information.

type FeePaymentNote 

type FeePaymentNote struct {
	db.Notification
	Asset         *uint32 `json:"asset,omitempty"`
	Confirmations *uint32 `json:"confirmations,omitempty"`
	Dex           string  `json:"dex,omitempty"`
}

FeePaymentNote is a notification regarding registration fee payment.

type FiatRatesNote added in v0.5.0 

type FiatRatesNote struct {
	db.Notification
	FiatRates map[uint32]float64 `json:"fiatRates"`
}

FiatRatesNote is an update of fiat rate data for assets.

type GapStrategy added in v0.6.0 

type GapStrategy string

GapStrategy is a specifier for an algorithm to choose the maker bot's target spread. 

const (
	// GapStrategyMultiplier calculates the spread by multiplying the
	// break-even gap by the specified multiplier, 1 <= r <= 100.
	GapStrategyMultiplier GapStrategy = "multiplier"
	// GapStrategyAbsolute sets the spread to the rate difference.
	GapStrategyAbsolute GapStrategy = "absolute"
	// GapStrategyAbsolutePlus sets the spread to the rate difference plus the
	// break-even gap.
	GapStrategyAbsolutePlus GapStrategy = "absolute-plus"
	// GapStrategyPercent sets the spread as a ratio of the mid-gap rate.
	// 0 <= r <= 0.1
	GapStrategyPercent GapStrategy = "percent"
	// GapStrategyPercentPlus sets the spread as a ratio of the mid-gap rate
	// plus the break-even gap.
	GapStrategyPercentPlus GapStrategy = "percent-plus"
)

type InFlightOrder added in v0.6.0 

type InFlightOrder struct {
	*Order
	TemporaryID uint64 `json:"tempID"`
}

InFlightOrder is an Order that is not stamped yet, but has a temporary ID to match once order submission is complete.

type LoginNote added in v0.6.0 

type LoginNote struct {
	db.Notification
}

LoginNote is a notification with the recent login status.

type MakerProgram added in v0.6.0 

type MakerProgram struct {
	Host    string `json:"host"`
	BaseID  uint32 `json:"baseID"`
	QuoteID uint32 `json:"quoteID"`

	// Lots is the number of lots to allocate to each side of the market. This
	// is an ideal allotment, but at any given time, a side could have up to
	// 2 * Lots on order.
	Lots uint64 `json:"lots"`

	// GapStrategy selects an algorithm for calculating the target spread.
	GapStrategy GapStrategy `json:"gapStrategy"`

	// GapFactor controls the gap width in a way determined by the GapStrategy.
	GapFactor float64 `json:"gapFactor"`

	// DriftTolerance is how far away from an ideal price an order can drift
	// before it will replaced (units: ratio of price). Default: 0.1%.
	// 0 <= x <= 0.01.
	DriftTolerance float64 `json:"driftTolerance"`

	// OracleWeighting affects how the target price is derived based on external
	// market data. OracleWeighting, r, determines the target price with the
	// formula:
	//   target_price = dex_mid_gap_price * (1 - r) + oracle_price * r
	// OracleWeighting is limited to 0 <= x <= 1.0.
	// Fetching of price data is disabled if OracleWeighting = 0.
	OracleWeighting *float64 `json:"oracleWeighting"`

	// OracleBias applies a bias in the positive (higher price) or negative
	// (lower price) direction. -0.05 <= x <= 0.05.
	OracleBias float64 `json:"oracleBias"`

	// EmptyMarketRate can be set if there is no market data available, and is
	// ignored if there is market data available.
	EmptyMarketRate float64 `json:"manualRate"`
}

MakerProgram is the program for a makerBot.

type Market 

type Market struct {
	Name            string        `json:"name"`
	BaseID          uint32        `json:"baseid"`
	BaseSymbol      string        `json:"basesymbol"`
	QuoteID         uint32        `json:"quoteid"`
	QuoteSymbol     string        `json:"quotesymbol"`
	LotSize         uint64        `json:"lotsize"`
	RateStep        uint64        `json:"ratestep"`
	EpochLen        uint64        `json:"epochlen"`
	StartEpoch      uint64        `json:"startepoch"`
	MarketBuyBuffer float64       `json:"buybuffer"`
	Orders          []*Order      `json:"orders"`
	SpotPrice       *msgjson.Spot `json:"spot"`
	// AtomToConv is a rate conversion factor. Multiply by AtomToConv to convert
	// an atomic rate (e.g. gwei/sat) to a conventional rate (ETH/BTC). Divide
	// by AtomToConv to convert a conventional rate to an atomic rate.
	AtomToConv float64 `json:"atomToConv"`
	// InFlightOrders are Orders with zeroed IDs for the embedded Order, but
	// with a TemporaryID to match with a notification once asynchronous order
	// submission is complete.
	InFlightOrders []*InFlightOrder `json:"inflight"`
}

Market is market info.

func (*Market) BaseContractLocked 

func (m *Market) BaseContractLocked() uint64

BaseContractLocked is the amount of base asset locked in un-redeemed contracts.

func (*Market) BaseOrderLocked 

func (m *Market) BaseOrderLocked() uint64

BaseOrderLocked is the amount of base asset locked in epoch or booked orders.

func (*Market) ConventionalRateToMsg added in v0.6.0 

func (m *Market) ConventionalRateToMsg(p float64) uint64

ConventionalRateToMsg converts a conventional rate to a message-rate.

func (*Market) Display 

func (m *Market) Display() string

Display returns an ID string suitable for displaying in a UI.

func (*Market) MsgRateToConventional added in v0.6.0 

func (m *Market) MsgRateToConventional(r uint64) float64

MsgRateToConventional converts a message-rate to a conventional rate.

func (*Market) QuoteContractLocked 

func (m *Market) QuoteContractLocked() uint64

QuoteContractLocked is the amount of quote asset locked in un-redeemed contracts.

func (*Market) QuoteOrderLocked 

func (m *Market) QuoteOrderLocked() uint64

QuoteOrderLocked is the amount of quote asset locked in epoch or booked orders.

type MarketOrderBook 

type MarketOrderBook struct {
	Base  uint32     `json:"base"`
	Quote uint32     `json:"quote"`
	Book  *OrderBook `json:"book"`
}

MarketOrderBook is used as the BookUpdate's Payload with the FreshBookAction. The subscriber will likely need to translate into a JSON tagged type.

type MarketReport added in v0.6.0 

type MarketReport struct {
	Price float64 `json:"price"`
	// BasisPrice is the the target price before oracle weighting and bias is
	// applied.
	BasisPrice      float64         `json:"basisPrice"`
	Oracles         []*OracleReport `json:"oracles"`
	BreakEvenSpread float64         `json:"breakEvenSpread"`
}

MarketReport is a report about the current state of a market pair, including oracle data.

type Match 

type Match struct {
	MatchID       dex.Bytes         `json:"matchID"`
	Status        order.MatchStatus `json:"status"`
	Active        bool              `json:"active"`
	Revoked       bool              `json:"revoked"`
	Rate          uint64            `json:"rate"`
	Qty           uint64            `json:"qty"`
	Side          order.MatchSide   `json:"side"`
	FeeRate       uint64            `json:"feeRate"`
	Swap          *Coin             `json:"swap,omitempty"`
	CounterSwap   *Coin             `json:"counterSwap,omitempty"`
	Redeem        *Coin             `json:"redeem,omitempty"`
	CounterRedeem *Coin             `json:"counterRedeem,omitempty"`
	Refund        *Coin             `json:"refund,omitempty"`
	Stamp         uint64            `json:"stamp"` // Server's time stamp - we have no local time recorded
	IsCancel      bool              `json:"isCancel"`
}

Match represents a match on an order. An order may have many matches.

type MatchNote added in v0.2.0 

type MatchNote struct {
	db.Notification
	OrderID  dex.Bytes `json:"orderID"`
	Match    *Match    `json:"match"`
	Host     string    `json:"host"`
	MarketID string    `json:"marketID"`
}

MatchNote is a notification about a match.

type MaxOrderEstimate added in v0.2.0 

type MaxOrderEstimate struct {
	Swap   *asset.SwapEstimate   `json:"swap"`
	Redeem *asset.RedeemEstimate `json:"redeem"`
}

MaxOrderEstimate is an estimate of the fees and locked amounts associated with an order.

type MiniOrder 

type MiniOrder struct {
	Qty       float64 `json:"qty"`
	QtyAtomic uint64  `json:"qtyAtomic"`
	Rate      float64 `json:"rate"`
	MsgRate   uint64  `json:"msgRate"`
	Epoch     uint64  `json:"epoch,omitempty"`
	Sell      bool    `json:"sell"`
	Token     string  `json:"token"`
}

MiniOrder is minimal information about an order in a market's order book. Replaced MiniOrder, which had a float Qty in conventional units.

type Notification 

type Notification interface {
	// Type is a string ID unique to the concrete type.
	Type() string
	// Topic is a string ID unique to the message subject. Since subjects must
	// be translated, we cannot rely on the subject to programmatically identify
	// the message.
	Topic() Topic
	// Subject is a short description of the notification contents. When displayed
	// to the user, the Subject will typically be given visual prominence. For
	// notifications with Severity < Poke (not meant for display), the Subject
	// field may be repurposed as a second-level category ID.
	Subject() string
	// Details should contain more detailed information.
	Details() string
	// Severity is the notification severity.
	Severity() db.Severity
	// Time is the notification timestamp. The timestamp is set in
	// db.NewNotification. Time is a UNIX timestamp, in milliseconds.
	Time() uint64
	// Acked is true if the user has seen the notification. Acknowledgement is
	// recorded with (*Core).AckNotes.
	Acked() bool
	// ID should be unique, except in the case of identical copies of
	// db.Notification where the IDs should be the same.
	ID() dex.Bytes
	// Stamp sets the notification timestamp. If db.NewNotification is used to
	// construct the db.Notification, the timestamp will already be set.
	Stamp()
	// DBNote returns the underlying *db.Notification.
	DBNote() *db.Notification
	// String generates a compact human-readable representation of the
	// Notification that is suitable for logging.
	String() string
}

Notification is an interface for a user notification. Notification is satisfied by db.Notification, so concrete types can embed the db type.

type OracleReport added in v0.6.0 

type OracleReport struct {
	Host     string  `json:"host"`
	USDVol   float64 `json:"usdVol"`
	BestBuy  float64 `json:"bestBuy"`
	BestSell float64 `json:"bestSell"`
}

OracleReport is a summary of an oracle's market data.

type Order 

type Order struct {
	Host              string            `json:"host"`
	BaseID            uint32            `json:"baseID"`
	BaseSymbol        string            `json:"baseSymbol"`
	QuoteID           uint32            `json:"quoteID"`
	QuoteSymbol       string            `json:"quoteSymbol"`
	MarketID          string            `json:"market"`
	Type              order.OrderType   `json:"type"`
	ID                dex.Bytes         `json:"id"`    // Can be empty if part of an InFlightOrder
	Stamp             uint64            `json:"stamp"` // Server's time stamp
	SubmitTime        uint64            `json:"submitTime"`
	Sig               dex.Bytes         `json:"sig"`
	Status            order.OrderStatus `json:"status"`
	Epoch             uint64            `json:"epoch"`
	Qty               uint64            `json:"qty"`
	Sell              bool              `json:"sell"`
	Filled            uint64            `json:"filled"`
	Matches           []*Match          `json:"matches"`
	Cancelling        bool              `json:"cancelling"`
	Canceled          bool              `json:"canceled"`
	FeesPaid          *FeeBreakdown     `json:"feesPaid"`
	FundingCoins      []*Coin           `json:"fundingCoins"`
	LockedAmt         uint64            `json:"lockedamt"`
	AccelerationCoins []*Coin           `json:"accelerationCoins"`
	Rate              uint64            `json:"rate"`          // limit only
	TimeInForce       order.TimeInForce `json:"tif"`           // limit only
	TargetOrderID     dex.Bytes         `json:"targetOrderID"` // cancel only
	ReadyToTick       bool              `json:"readyToTick"`
}

Order is core's general type for an order. An order may be a market, limit, or cancel order. Some fields are only relevant to particular order types.

type OrderBook 

type OrderBook struct {
	Sells []*MiniOrder `json:"sells"`
	Buys  []*MiniOrder `json:"buys"`
	Epoch []*MiniOrder `json:"epoch"`
	// RecentMatches is a cache of up to 100 recent matches for a market.
	RecentMatches []*orderbook.MatchSummary `json:"recentMatches"`
}

OrderBook represents an order book, which are sorted buys and sells, and unsorted epoch orders.

type OrderEstimate added in v0.2.0 

type OrderEstimate struct {
	Swap   *asset.PreSwap   `json:"swap"`
	Redeem *asset.PreRedeem `json:"redeem"`
}

OrderEstimate is a Core.PreOrder estimate.

type OrderFilter 

type OrderFilter struct {
	N        int                 `json:"n"`
	Offset   dex.Bytes           `json:"offset"`
	Hosts    []string            `json:"hosts"`
	Assets   []uint32            `json:"assets"`
	Statuses []order.OrderStatus `json:"statuses"`
}

OrderFilter is almost the same as db.OrderFilter, except the Offset order ID is a dex.Bytes instead of a order.OrderID.

type OrderNote 

type OrderNote struct {
	db.Notification
	Order       *Order `json:"order"`
	TemporaryID uint64 `json:"tempID,omitempty"`
}

OrderNote is a notification about an order or a match.

func (*OrderNote) String 

func (on *OrderNote) String() string

String supplements db.Notification's Stringer with the Order's ID, if the Order is not nil.

type OrderReader added in v0.5.0 

type OrderReader struct {
	*Order
	BaseUnitInfo        dex.UnitInfo
	BaseFeeUnitInfo     dex.UnitInfo
	BaseFeeAssetSymbol  string
	QuoteUnitInfo       dex.UnitInfo
	QuoteFeeUnitInfo    dex.UnitInfo
	QuoteFeeAssetSymbol string
}

OrderReader wraps a Order and provides methods for info display. Whenever possible, add an OrderReader methods rather than a template func.

func (*OrderReader) AskString added in v0.5.0 

func (ord *OrderReader) AskString() string

AskString will print the minimum received amount for the filled limit order. The actual settled amount may be more.

func (*OrderReader) AverageRateString added in v0.5.0 

func (ord *OrderReader) AverageRateString() string

AverageRateString returns a formatting string containing the average rate of the matches that have been filled in an order.

func (*OrderReader) BaseAssetFees added in v0.5.0 

func (ord *OrderReader) BaseAssetFees() string

BaseAssetFees is a formatted string of the fees paid in the base asset.

func (*OrderReader) BaseFeeSymbol added in v0.6.0 

func (ord *OrderReader) BaseFeeSymbol() string

BaseFeeSymbol is the symbol of the asset used to pay the base asset's network fees.

func (*OrderReader) BaseQtyString added in v0.5.0 

func (ord *OrderReader) BaseQtyString() string

BaseQtyString formats the order quantity in units of the base asset.

func (*OrderReader) Cancelable added in v0.5.0 

func (ord *OrderReader) Cancelable() bool

Cancelable will be true for standing limit orders in status epoch or booked.

func (*OrderReader) FilledFrom added in v0.5.0 

func (ord *OrderReader) FilledFrom() string

FilledFrom is the sum filled in units of the outgoing asset. Excludes cancel matches.

func (*OrderReader) FilledPercent added in v0.5.0 

func (ord *OrderReader) FilledPercent() string

FilledPercent is the percent of the order that has filled, without percent sign. Excludes cancel matches.

func (*OrderReader) FilledTo added in v0.5.0 

func (ord *OrderReader) FilledTo() string

FilledTo is the sum filled in units of the incoming asset. Excludes cancel matches.

func (*OrderReader) FromFeeSymbol added in v0.6.0 

func (ord *OrderReader) FromFeeSymbol() string

FromFeeSymbol is the symbol of the asset used to pay swap fees.

func (*OrderReader) FromID added in v0.5.0 

func (ord *OrderReader) FromID() uint32

FromID is the asset ID of the asset which will be sent.

func (*OrderReader) FromSymbol added in v0.5.0 

func (ord *OrderReader) FromSymbol() string

FromSymbol is the symbol of the asset which will be sent.

func (*OrderReader) FundingCoinIDs added in v0.5.0 

func (ord *OrderReader) FundingCoinIDs() []string

func (*OrderReader) IsMarketBuy added in v0.5.0 

func (ord *OrderReader) IsMarketBuy() bool

IsMarketBuy is true if this is a market buy order.

func (*OrderReader) IsMarketOrder added in v0.5.0 

func (ord *OrderReader) IsMarketOrder() bool

IsMarketOrder is true if this is a market order.

func (*OrderReader) OfferString added in v0.5.0 

func (ord *OrderReader) OfferString() string

OfferString formats the order quantity in units of the outgoing asset, performing a conversion if necessary.

func (*OrderReader) QuoteAssetFees added in v0.5.0 

func (ord *OrderReader) QuoteAssetFees() string

QuoteAssetFees is a formatted string of the fees paid in the quote asset.

func (*OrderReader) QuoteFeeSymbol added in v0.6.0 

func (ord *OrderReader) QuoteFeeSymbol() string

QuoteFeeSymbol is the symbol of the asset used to pay the quote asset's network fees.

func (*OrderReader) RateString added in v0.5.0 

func (ord *OrderReader) RateString() string

RateString is a formatted rate with units.

func (*OrderReader) RedemptionFeesString added in v0.5.0 

func (ord *OrderReader) RedemptionFeesString() string

RedemptionFeesString is a formatted string of the paid redemption fees.

func (*OrderReader) SettledFrom added in v0.5.0 

func (ord *OrderReader) SettledFrom() string

SettledFrom is the sum settled outgoing asset.

func (*OrderReader) SettledPercent added in v0.5.0 

func (ord *OrderReader) SettledPercent() string

SettledPercent is the percent of the order which has completed settlement.

func (*OrderReader) SettledTo added in v0.5.0 

func (ord *OrderReader) SettledTo() string

SettledTo is the sum settled of incoming asset.

func (*OrderReader) SideString added in v0.5.0 

func (ord *OrderReader) SideString() string

SideString is "sell" for sell orders, "buy" for buy orders, and "" for cancels.

func (*OrderReader) SimpleRateString added in v0.5.0 

func (ord *OrderReader) SimpleRateString() string

SimpleRateString is the formatted match rate.

func (*OrderReader) StatusString added in v0.5.0 

func (ord *OrderReader) StatusString() string

StatusString is the order status.

IMPORTANT: we have similar function in JS for UI, it must match this one exactly, when updating make sure to update both!

func (*OrderReader) SwapFeesString added in v0.5.0 

func (ord *OrderReader) SwapFeesString() string

SwapFeesString is a formatted string of the paid swap fees.

func (*OrderReader) ToFeeSymbol added in v0.6.0 

func (ord *OrderReader) ToFeeSymbol() string

ToFeeSymbol is the symbol of the asset used to pay redeem fees.

func (*OrderReader) ToID added in v0.5.0 

func (ord *OrderReader) ToID() uint32

FromID is the asset ID of the asset which will be received.

func (*OrderReader) ToSymbol added in v0.5.0 

func (ord *OrderReader) ToSymbol() string

FromSymbol is the symbol of the asset which will be received.

func (*OrderReader) TypeString added in v0.5.0 

func (ord *OrderReader) TypeString() string

TypeString combines the order type and side into a single string.

type PendingBondState added in v0.6.0 

type PendingBondState struct {
	Symbol  string `json:"symbol"`
	AssetID uint32 `json:"assetID"`
	Confs   uint32 `json:"confs"`
}

PendingBondState conveys a pending bond's asset and current confirmation count.

type PendingFeeState added in v0.4.0 

type PendingFeeState PendingBondState

PendingFeeState is deprecated (V0PURGE), but the same as PendingBondState.

type PostBondForm added in v0.6.0 

type PostBondForm struct {
	Addr     string           `json:"host"`
	AppPass  encode.PassBytes `json:"appPass"`
	Asset    *uint32          `json:"assetID,omitempty"` // do not default to 0
	Bond     uint64           `json:"bond"`
	LockTime uint64           `json:"lockTime"` // 0 means go with server-derived value

	// FeeBuffer is optional, to use same value from BondsFeeBuffer during
	// wallet funding. If zero, the wallet will use an internal estimate.
	FeeBuffer uint64 `json:"feeBuffer,omitempty"`

	// These options may be set when creating an account.
	MaintainTier *bool   `json:"maintainTier,omitempty"` // tier implied from Bond amount
	MaxBondedAmt *uint64 `json:"maxBondedAmt,omitempty"`

	// Cert is needed if posting bond to a new DEX. Cert can be a string, which
	// is interpreted as a filepath, or a []byte, which is interpreted as the
	// file contents of the certificate.
	Cert interface{} `json:"cert"`
}

PostBondForm is information necessary to post a new bond for a new or existing DEX account at the specified DEX address.

type PostBondResult added in v0.6.0 

type PostBondResult struct {
	BondID      string `json:"bondID"`
	ReqConfirms uint16 `json:"reqConfirms"`
}

PostBondResult holds the data returned from PostBond.

type PreAccelerate added in v0.5.0 

type PreAccelerate struct {
	SwapRate          uint64                   `json:"swapRate"`
	SuggestedRate     uint64                   `json:"suggestedRate"`
	SuggestedRange    asset.XYRange            `json:"suggestedRange"`
	EarlyAcceleration *asset.EarlyAcceleration `json:"earlyAcceleration,omitempty"`
}

PreAccelerate gives information that the user can use to decide on how much to accelerate stuck swap transactions in an order.

type RegisterForm 

type RegisterForm struct {
	Addr    string           `json:"url"`
	AppPass encode.PassBytes `json:"appPass"`
	Fee     uint64           `json:"fee"`
	Asset   *uint32          `json:"assetID,omitempty"` // do not default to 0
	// Cert can be a string, which is interpreted as a filepath, or a []byte,
	// which is interpreted as the file contents of the certificate.
	Cert interface{} `json:"cert"`
}

RegisterForm is information necessary to register an account on a DEX. Old registration fee (V0PURGE)

type RegisterResult 

type RegisterResult struct {
	FeeID       string `json:"feeID"`
	ReqConfirms uint16 `json:"reqConfirms"`
}

RegisterResult holds data returned from Register.

type RemainderUpdate added in v0.4.0 

type RemainderUpdate struct {
	Token     string  `json:"token"`
	Qty       float64 `json:"qty"`
	QtyAtomic uint64  `json:"qtyAtomic"`
}

RemainderUpdate is an update to the quantity for an order on the order book. Replaced RemainingUpdate, which had a float Qty in conventional units.

type SecurityNote added in v0.4.0 

type SecurityNote struct {
	db.Notification
}

SecurityNote is a note regarding application security, credentials, or authentication.

type SendNote added in v0.5.0 

type SendNote struct {
	db.Notification
}

SendNote is a notification regarding a requested send or withdraw.

type ServerNotifyNote 

type ServerNotifyNote struct {
	db.Notification
}

ServerNotifyNote is a notification containing a server-originating message.

type SpotPriceNote added in v0.4.0 

type SpotPriceNote struct {
	db.Notification
	Host  string                   `json:"host"`
	Spots map[string]*msgjson.Spot `json:"spots"`
}

SpotPriceNote is a notification of an update to the market's spot price.

type Spreader added in v0.6.0 

type Spreader func(ctx context.Context, baseSymbol, quoteSymbol string) (sell, buy float64, err error)

Spreader is a function that can generate market spread data for a known exchange.

type SupportedAsset 

type SupportedAsset struct {
	ID     uint32       `json:"id"`
	Symbol string       `json:"symbol"`
	Name   string       `json:"name"`
	Wallet *WalletState `json:"wallet"`
	// Info is only populated for base chain assets. One of either Info or
	// Token will be populated.
	Info *asset.WalletInfo `json:"info"`
	// Token is only populated for token assets.
	Token    *asset.Token `json:"token"`
	UnitInfo dex.UnitInfo `json:"unitInfo"`
	// WalletCreationPending will be true if this wallet's parent wallet is
	// being synced before this wallet is created.
	WalletCreationPending bool `json:"walletCreationPending"`
}

SupportedAsset is data about an asset and possibly the wallet associated with it.

type Topic added in v0.4.0 

type Topic = db.Topic

Topic is a language-independent unique ID for a Notification. 

const (
	TopicSeedNeedsSaving Topic = "SeedNeedsSaving"
	TopicUpgradedToSeed  Topic = "UpgradedToSeed"
)
const (
	TopicFeePaymentInProgress    Topic = "FeePaymentInProgress"
	TopicFeePaymentError         Topic = "FeePaymentError"
	TopicFeeCoinError            Topic = "FeeCoinError"
	TopicRegUpdate               Topic = "RegUpdate"
	TopicBondConfirming          Topic = "BondConfirming"
	TopicBondRefunded            Topic = "BondRefunded"
	TopicBondPostError           Topic = "BondPostError"
	TopicBondCoinError           Topic = "BondCoinError"
	TopicAccountRegistered       Topic = "AccountRegistered"
	TopicAccountUnlockError      Topic = "AccountUnlockError"
	TopicWalletConnectionWarning Topic = "WalletConnectionWarning"
	TopicWalletUnlockError       Topic = "WalletUnlockError"
	TopicWalletCommsWarning      Topic = "WalletCommsWarning"
	TopicWalletPeersRestored     Topic = "WalletPeersRestored"
)
const (
	TopicSendError   Topic = "SendError"
	TopicSendSuccess Topic = "SendSuccess"
)
const (
	TopicOrderLoadFailure     Topic = "OrderLoadFailure"
	TopicOrderResumeFailure   Topic = "OrderResumeFailure"
	TopicBuyOrderPlaced       Topic = "BuyOrderPlaced"
	TopicSellOrderPlaced      Topic = "SellOrderPlaced"
	TopicYoloPlaced           Topic = "YoloPlaced"
	TopicMissingMatches       Topic = "MissingMatches"
	TopicWalletMissing        Topic = "WalletMissing"
	TopicMatchErrorCoin       Topic = "MatchErrorCoin"
	TopicMatchErrorContract   Topic = "MatchErrorContract"
	TopicMatchRecoveryError   Topic = "MatchRecoveryError"
	TopicOrderCoinError       Topic = "OrderCoinError"
	TopicOrderCoinFetchError  Topic = "OrderCoinFetchError"
	TopicPreimageSent         Topic = "PreimageSent"
	TopicCancelPreimageSent   Topic = "CancelPreimageSent"
	TopicMissedCancel         Topic = "MissedCancel"
	TopicOrderBooked          Topic = "OrderBooked"
	TopicNoMatch              Topic = "NoMatch"
	TopicBuyOrderCanceled     Topic = "BuyOrderCanceled"
	TopicSellOrderCanceled    Topic = "SellOrderCanceled"
	TopicCancel               Topic = "Cancel"
	TopicBuyMatchesMade       Topic = "BuyMatchesMade"
	TopicSellMatchesMade      Topic = "SellMatchesMade"
	TopicSwapSendError        Topic = "SwapSendError"
	TopicInitError            Topic = "InitError"
	TopicReportRedeemError    Topic = "ReportRedeemError"
	TopicSwapsInitiated       Topic = "SwapsInitiated"
	TopicRedemptionError      Topic = "RedemptionError"
	TopicMatchComplete        Topic = "MatchComplete"
	TopicRefundFailure        Topic = "RefundFailure"
	TopicMatchesRefunded      Topic = "MatchesRefunded"
	TopicMatchRevoked         Topic = "MatchRevoked"
	TopicOrderRevoked         Topic = "OrderRevoked"
	TopicOrderAutoRevoked     Topic = "OrderAutoRevoked"
	TopicMatchRecovered       Topic = "MatchRecovered"
	TopicCancellingOrder      Topic = "CancellingOrder"
	TopicOrderStatusUpdate    Topic = "OrderStatusUpdate"
	TopicMatchResolutionError Topic = "MatchResolutionError"
	TopicFailedCancel         Topic = "FailedCancel"
	TopicOrderLoaded          Topic = "OrderLoaded"
	TopicOrderRetired         Topic = "OrderRetired"
	TopicAsyncOrderFailure    Topic = "AsyncOrderFailure"
	TopicAsyncOrderSubmitted  Topic = "AsyncOrderSubmitted"
)
const (
	TopicAudit                 Topic = "Audit"
	TopicAuditTrouble          Topic = "AuditTrouble"
	TopicNewMatch              Topic = "NewMatch"
	TopicCounterConfirms       Topic = "CounterConfirms"
	TopicConfirms              Topic = "Confirms"
	TopicRedemptionResubmitted Topic = "RedemptionResubmitted"
	TopicSwapRefunded          Topic = "SwapRefunded"
	TopicRedemptionConfirmed   Topic = "RedemptionConfirmed"
)
const (
	TopicDEXConnected    Topic = "DEXConnected"
	TopicDEXDisconnected Topic = "DEXDisconnected"
)
const (
	TopicDexAuthError     Topic = "DexAuthError"
	TopicUnknownOrders    Topic = "UnknownOrders"
	TopicOrdersReconciled Topic = "OrdersReconciled"
	TopicBondConfirmed    Topic = "BondConfirmed"
	TopicBondExpired      Topic = "BondExpired"
)
const (
	TopicWalletConfigurationUpdated Topic = "WalletConfigurationUpdated"
	TopicWalletPasswordUpdated      Topic = "WalletPasswordUpdated"
	TopicWalletPeersWarning         Topic = "WalletPeersWarning"
	TopicWalletTypeDeprecated       Topic = "WalletTypeDeprecated"
	TopicWalletPeersUpdate          Topic = "WalletPeersUpdate"
)
const (
	TopicMarketSuspendScheduled   Topic = "MarketSuspendScheduled"
	TopicMarketSuspended          Topic = "MarketSuspended"
	TopicMarketSuspendedWithPurge Topic = "MarketSuspendedWithPurge"
	TopicMarketResumeScheduled    Topic = "MarketResumeScheduled"
	TopicMarketResumed            Topic = "MarketResumed"
	TopicPenalized                Topic = "Penalized"
	TopicDEXNotification          Topic = "DEXNotification"
)
const (
	TopicQueuedCreationFailed  Topic = "QueuedCreationFailed"
	TopicQueuedCreationSuccess Topic = "QueuedCreationSuccess"
	TopicCreationQueued        Topic = "CreationQueued"
)
const (
	TopicBotCreated Topic = "BotCreated"
	TopicBotStarted Topic = "BotStarted"
	TopicBotStopped Topic = "BotStopped"
	TopicBotUpdated Topic = "BotUpdated"
	TopicBotRetired Topic = "BotRetired"
)
const TopicBalanceUpdated Topic = "BalanceUpdated"
const TopicEpoch Topic = "Epoch"
const TopicFiatRatesUpdate Topic = "fiatrateupdate"
const TopicLoginStatus Topic = "LoginStatus"
const TopicSpotsUpdate Topic = "SpotsUpdate"
const (
	TopicUpgradeNeeded Topic = "UpgradeNeeded"
)
const TopicWalletState Topic = "WalletState"

type TradeForm 

type TradeForm struct {
	Host    string            `json:"host"`
	IsLimit bool              `json:"isLimit"`
	Sell    bool              `json:"sell"`
	Base    uint32            `json:"base"`
	Quote   uint32            `json:"quote"`
	Qty     uint64            `json:"qty"`
	Rate    uint64            `json:"rate"`
	TifNow  bool              `json:"tifnow"`
	Options map[string]string `json:"options"`
	Program uint64            // Bot program ID
}

TradeForm is used to place a market or limit order

type UpgradeNote added in v0.4.0 

type UpgradeNote struct {
	db.Notification
}

UpgradeNote is a notification regarding an outdated client.

type User 

type User struct {
	Exchanges          map[string]*Exchange       `json:"exchanges"`
	Initialized        bool                       `json:"inited"`
	SeedGenerationTime uint64                     `json:"seedgentime"`
	Assets             map[uint32]*SupportedAsset `json:"assets"`
	FiatRates          map[uint32]float64         `json:"fiatRates"`
	Bots               []*BotReport               `json:"bots"`
	ExtensionConfig    *ExtensionModeConfig       `json:"extensionModeConfig,omitempty"`
}

User is information about the user's wallets and DEX accounts.

type WalletBalance 

type WalletBalance struct {
	*db.Balance
	// OrderLocked is the total amount of funds that is currently locked
	// for swap, but not actually swapped yet. This amount is also included
	// in the `Locked` balance value.
	OrderLocked uint64 `json:"orderlocked"`
	// ContractLocked is the total amount of funds locked in unspent (i.e.
	// unredeemed / unrefunded) swap contracts. This amount is NOT included in
	// the db.Balance.
	ContractLocked uint64 `json:"contractlocked"`
	// BondLocked is the total amount of funds locked in unspent fidelity bonds.
	// This amount is NOT included in the db.Balance.
	BondLocked uint64 `json:"bondlocked"`
}

WalletBalance is an exchange wallet's balance which includes various locked amounts in addition to other balance details stored in db. Both the ContractLocked and BondLocked amounts are not included in the Locked field of the embedded asset.Balance since they correspond to outputs that are foreign to the wallet i.e. only spendable by externally-crafted transactions. On the other hand, OrderLocked is part of Locked since these are regular UTXOs that have been locked by the wallet to fund an order's swap transaction.

type WalletConfigNote 

type WalletConfigNote struct {
	db.Notification
	Wallet *WalletState `json:"wallet"`
}

WalletConfigNote is a notification regarding a change in wallet configuration.

type WalletCreationNote added in v0.6.0 

type WalletCreationNote struct {
	db.Notification
	AssetID uint32 `json:"assetID"`
}

WalletCreationNote is a notification regarding asynchronous wallet creation.

type WalletForm 

type WalletForm struct {
	AssetID uint32
	Config  map[string]string
	Type    string
	// ParentForm is the configuration settings for a parent asset. If this is a
	// token whose parent asset needs configuration, a non-nil ParentForm can be
	// supplied. This will cause CreateWallet to run in a special mode which
	// will create the parent asset's wallet synchronously, but schedule the
	// creation of the token wallet to occur asynchronously after the parent
	// wallet is fully synced, sending NoteTypeCreateWallet notifications to
	// update with progress.
	ParentForm *WalletForm
}

WalletForm is information necessary to create a new exchange wallet. The ConfigText, if provided, will be parsed for wallet connection settings.

type WalletState 

type WalletState struct {
	Symbol       string            `json:"symbol"`
	AssetID      uint32            `json:"assetID"`
	Version      uint32            `json:"version"`
	WalletType   string            `json:"type"`
	Traits       asset.WalletTrait `json:"traits"`
	Open         bool              `json:"open"`
	Running      bool              `json:"running"`
	Balance      *WalletBalance    `json:"balance"`
	Address      string            `json:"address"`
	Units        string            `json:"units"`
	Encrypted    bool              `json:"encrypted"`
	PeerCount    uint32            `json:"peerCount"`
	Synced       bool              `json:"synced"`
	SyncProgress float32           `json:"syncProgress"`
	Disabled     bool              `json:"disabled"`
}

WalletState is the current status of an exchange wallet.

type WalletStateNote 

type WalletStateNote WalletConfigNote

WalletStateNote is a notification regarding a change in wallet state, including: creation, locking, unlocking, connect, disabling and enabling. This is intended to be a Data Severity notification.

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