loader

Documentation

Overview

Package loader provides a concurrent safe implementation of a wallet loader.

It is intended to allow creating and opening wallets as well as managing services like ticket buyer by RPC servers as well other subsystems.

This is a copy of the original upstream dcrwallet loader package, which was made internal for the 1.5 release cycle.

Index

• func DisableLog()
• func UseLogger(logger slog.Logger)
• type Loader
  • func NewLoader(chainParams *chaincfg.Params, dbDirPath string, gapLimit uint32) *Loader
  • func (l *Loader) CreateNewWallet(ctx context.Context, pubPassphrase, privPassphrase, seed []byte) (w *wallet.Wallet, err error)
  • func (l *Loader) CreateWatchingOnlyWallet(ctx context.Context, extendedPubKey string, pubPass []byte) (w *wallet.Wallet, err error)
  • func (l *Loader) DbDirPath() string
  • func (l *Loader) LoadedWallet() (*wallet.Wallet, bool)
  • func (l *Loader) NetworkBackend() (n wallet.NetworkBackend, ok bool)
  • func (l *Loader) OpenExistingWallet(ctx context.Context, pubPassphrase []byte) (w *wallet.Wallet, rerr error)
  • func (l *Loader) RunAfterLoad(fn func(*wallet.Wallet))
  • func (l *Loader) UnloadWallet() error
  • func (l *Loader) WalletExists() (bool, error)
• type LoaderOption
  • func LoaderWithExternalWalletDB(backend kvdb.Backend) LoaderOption

Functions

func DisableLog

func DisableLog()

DisableLog disables all library log output. Logging output is disabled by default until either UseLogger or SetLogWriter are called.

func UseLogger

func UseLogger(logger slog.Logger)

UseLogger uses a specified Logger to output package logging info. This should be used in preference to SetLogWriter if the caller is also using slog.

Types

type Loader

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

Loader implements the creating of new and opening of existing wallets, while providing a callback system for other subsystems to handle the loading of a wallet. This is primarely intended for use by the RPC servers, to enable methods and services which require the wallet when the wallet is loaded by another subsystem.

Loader is safe for concurrent access.

func NewLoader

func NewLoader(chainParams *chaincfg.Params, dbDirPath string, gapLimit uint32) *Loader

NewLoader constructs a Loader.

func (*Loader) CreateNewWallet

func (l *Loader) CreateNewWallet(ctx context.Context, pubPassphrase, privPassphrase, seed []byte) (w *wallet.Wallet, err error)

CreateNewWallet creates a new wallet using the provided public and private passphrases. The seed is optional. If non-nil, addresses are derived from this seed. If nil, a secure random seed is generated.

func (*Loader) CreateWatchingOnlyWallet

func (l *Loader) CreateWatchingOnlyWallet(ctx context.Context, extendedPubKey string, pubPass []byte) (w *wallet.Wallet, err error)

CreateWatchingOnlyWallet creates a new watch-only wallet using the provided extended public key and public passphrase.

func (*Loader) DbDirPath

func (l *Loader) DbDirPath() string

DbDirPath returns the Loader's database directory path

func (*Loader) LoadedWallet

func (l *Loader) LoadedWallet() (*wallet.Wallet, bool)

LoadedWallet returns the loaded wallet, if any, and a bool for whether the wallet has been loaded or not. If true, the wallet pointer should be safe to dereference.

func (*Loader) NetworkBackend

func (l *Loader) NetworkBackend() (n wallet.NetworkBackend, ok bool)

NetworkBackend returns the associated wallet network backend, if any, and a bool describing whether a non-nil network backend was set.

func (*Loader) OpenExistingWallet

func (l *Loader) OpenExistingWallet(ctx context.Context, pubPassphrase []byte) (w *wallet.Wallet, rerr error)

OpenExistingWallet opens the wallet from the loader's wallet database path and the public passphrase. If the loader is being called by a context where standard input prompts may be used during wallet upgrades, setting canConsolePrompt will enable these prompts.

func (*Loader) RunAfterLoad

func (l *Loader) RunAfterLoad(fn func(*wallet.Wallet))

RunAfterLoad adds a function to be executed when the loader creates or opens a wallet. Functions are executed in a single goroutine in the order they are added.

func (*Loader) UnloadWallet

func (l *Loader) UnloadWallet() error

UnloadWallet stops the loaded wallet, if any, and closes the wallet database. Returns with errors.Invalid if the wallet has not been loaded with CreateNewWallet or LoadExistingWallet. The Loader may be reused if this function returns without error.

func (*Loader) WalletExists

func (l *Loader) WalletExists() (bool, error)

WalletExists returns whether a file exists at the loader's database path. This may return an error for unexpected I/O failures.

type LoaderOption

type LoaderOption func()

LoaderOption is similar to the upstream btcwallet.LoaderOption type, but not yet used.

func LoaderWithExternalWalletDB

func LoaderWithExternalWalletDB(backend kvdb.Backend) LoaderOption