lntest

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 Go to latest Published: Jun 22, 2022 License: MIT Imports: 52 Imported by: 0

Documentation

Overview

Package lntest provides testing utilities for the lnd repository.

This package contains infrastructure for integration tests that launch full lnd nodes in a controlled environment and interact with them via RPC. Using a NetworkHarness, a test can launch multiple lnd nodes, open channels between them, create defined network topologies, and anything else that is possible with RPC commands.

Index

Constants

View Source 
const (

	// ListenerFormat is the format string that is used to generate local
	// listener addresses.
	ListenerFormat = "127.0.0.1:%d"

	// NeutrinoBackendName is the name of the neutrino backend.
	NeutrinoBackendName = "neutrino"
)
View Source 
const (
	// MinerMempoolTimeout is the max time we will wait for a transaction
	// to propagate to the mining node's mempool.
	MinerMempoolTimeout = time.Minute

	// ChannelOpenTimeout is the max time we will wait before a channel to
	// be considered opened.
	ChannelOpenTimeout = time.Second * 30

	// ChannelCloseTimeout is the max time we will wait before a channel is
	// considered closed.
	ChannelCloseTimeout = time.Second * 30

	// DefaultTimeout is a timeout that will be used for various wait
	// scenarios where no custom timeout value is defined.
	DefaultTimeout = time.Second * 30

	// AsyncBenchmarkTimeout is the timeout used when running the async
	// payments benchmark.
	AsyncBenchmarkTimeout = 2 * time.Minute

	// NodeStartTimeout is the timeout value when waiting for a node to
	// become fully started.
	NodeStartTimeout = time.Second * 60
)
View Source 
const DefaultCSV = 4

DefaultCSV is the CSV delay (remotedelay) we will start our test nodes with.

Variables

This section is empty.

Functions

func ApplyPortOffset 

func ApplyPortOffset(offset uint32)

ApplyPortOffset adds the given offset to the lastPort variable, making it possible to run the tests in parallel without colliding on the same ports.

func CheckChannelPolicy 

func CheckChannelPolicy(policy, expectedPolicy *lnrpc.RoutingPolicy) error

CheckChannelPolicy checks that the policy matches the expected one.

func CopyFile 

func CopyFile(dest, src string) error

CopyFile copies the file src to dest.

func GenerateBtcdListenerAddresses 

func GenerateBtcdListenerAddresses() (string, string)

GenerateBtcdListenerAddresses is a function that returns two listener addresses with unique ports and should be used to overwrite rpctest's default generator which is prone to use colliding ports.

func GetBtcdBinary 

func GetBtcdBinary() string

GetBtcdBinary returns the full path to the binary of the custom built btcd executable or an empty string if none is set.

func GetLogDir 

func GetLogDir() string

GetLogDir returns the passed --logdir flag or the default value if it wasn't set.

func MakeOutpoint 

func MakeOutpoint(chanPoint *lnrpc.ChannelPoint) (wire.OutPoint, error)

MakeOutpoint returns the outpoint of the channel's funding transaction.

func NextAvailablePort 

func NextAvailablePort() int

NextAvailablePort returns the first port that is available for listening by a new node. It panics if no port is found and the maximum available TCP port is reached.

Types

type BackendConfig 

type BackendConfig interface {
	// GenArgs returns the arguments needed to be passed to LND at startup
	// for using this node as a chain backend.
	GenArgs() []string

	// ConnectMiner is called to establish a connection to the test miner.
	ConnectMiner() error

	// DisconnectMiner is called to disconnect the miner.
	DisconnectMiner() error

	// Name returns the name of the backend type.
	Name() string
}

BackendConfig is an interface that abstracts away the specific chain backend node implementation.

type BaseNodeConfig 

type BaseNodeConfig struct {
	Name string

	// LogFilenamePrefix is used to prefix node log files. Can be used
	// to store the current test case for simpler postmortem debugging.
	LogFilenamePrefix string

	BackendCfg BackendConfig
	NetParams  *chaincfg.Params
	BaseDir    string
	ExtraArgs  []string

	DataDir        string
	LogDir         string
	TLSCertPath    string
	TLSKeyPath     string
	AdminMacPath   string
	ReadMacPath    string
	InvoiceMacPath string

	HasSeed  bool
	Password []byte

	P2PPort     int
	RPCPort     int
	RESTPort    int
	ProfilePort int

	AcceptKeySend bool
	AcceptAMP     bool

	FeeURL string

	DbBackend   DatabaseBackend
	PostgresDsn string
}

BaseNodeConfig is the base node configuration.

func (*BaseNodeConfig) BaseConfig 

func (cfg *BaseNodeConfig) BaseConfig() *BaseNodeConfig

BaseConfig returns the base node configuration struct.

func (BaseNodeConfig) ChanBackupPath 

func (cfg BaseNodeConfig) ChanBackupPath() string

func (BaseNodeConfig) DBDir 

func (cfg BaseNodeConfig) DBDir() string

DBDir returns the holding directory path of the graph database.

func (BaseNodeConfig) DBPath 

func (cfg BaseNodeConfig) DBPath() string

func (*BaseNodeConfig) GenArgs 

func (cfg *BaseNodeConfig) GenArgs() []string

GenArgs generates a slice of command line arguments from the lightning node config struct.

func (*BaseNodeConfig) GenerateListeningPorts 

func (cfg *BaseNodeConfig) GenerateListeningPorts()

GenerateListeningPorts generates the ports to listen on designated for the current lightning network test.

func (BaseNodeConfig) P2PAddr 

func (cfg BaseNodeConfig) P2PAddr() string

func (BaseNodeConfig) RESTAddr 

func (cfg BaseNodeConfig) RESTAddr() string

func (BaseNodeConfig) RPCAddr 

func (cfg BaseNodeConfig) RPCAddr() string

type BtcdBackendConfig 

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

BtcdBackendConfig is an implementation of the BackendConfig interface backed by a ltcd node.

func NewBackend 

func NewBackend(miner string, netParams *chaincfg.Params) (
	*BtcdBackendConfig, func() error, error)

NewBackend starts a new rpctest.Harness and returns a BtcdBackendConfig for that node. miner should be set to the P2P address of the miner to connect to.

func (BtcdBackendConfig) ConnectMiner 

func (b BtcdBackendConfig) ConnectMiner() error

ConnectMiner is called to establish a connection to the test miner.

func (BtcdBackendConfig) DisconnectMiner 

func (b BtcdBackendConfig) DisconnectMiner() error

DisconnectMiner is called to disconnect the miner.

func (BtcdBackendConfig) GenArgs 

func (b BtcdBackendConfig) GenArgs() []string

GenArgs returns the arguments needed to be passed to LND at startup for using this node as a chain backend.

func (BtcdBackendConfig) Name 

func (b BtcdBackendConfig) Name() string

Name returns the name of the backend type.

type DatabaseBackend 

type DatabaseBackend int
const (
	BackendBbolt DatabaseBackend = iota
	BackendEtcd
	BackendPostgres
)

type HarnessMiner 

type HarnessMiner struct {
	*rpctest.Harness
	// contains filtered or unexported fields
}

func NewMiner 

func NewMiner() (*HarnessMiner, error)

NewMiner creates a new miner using btcd backend with the default log file dir and name.

func NewTempMiner 

func NewTempMiner(tempDir, tempLogFilename string) (*HarnessMiner, error)

NewTempMiner creates a new miner using btcd backend with the specified log file dir and name.

func (*HarnessMiner) Stop 

func (h *HarnessMiner) Stop() error

Stop shuts down the miner and saves its logs.

type HarnessNode 

type HarnessNode struct {
	Cfg *BaseNodeConfig

	// NodeID is a unique identifier for the node within a NetworkHarness.
	NodeID int

	// PubKey is the serialized compressed identity public key of the node.
	// This field will only be populated once the node itself has been
	// started via the start() method.
	PubKey    [33]byte
	PubKeyStr string

	// TODO(yy): remove
	lnrpc.LightningClient
	lnrpc.WalletUnlockerClient
	invoicesrpc.InvoicesClient
	SignerClient     signrpc.SignerClient
	RouterClient     routerrpc.RouterClient
	WalletKitClient  walletrpc.WalletKitClient
	Watchtower       watchtowerrpc.WatchtowerClient
	WatchtowerClient wtclientrpc.WatchtowerClientClient
	StateClient      lnrpc.StateClient
	// contains filtered or unexported fields
}

HarnessNode represents an instance of lnd running within our test network harness. Each HarnessNode instance also fully embeds an RPC client in order to pragmatically drive the node.

func (*HarnessNode) AddToLog 

func (hn *HarnessNode) AddToLog(format string, a ...interface{})

AddToLog adds a line of choice to the node's logfile. This is useful to interleave test output with output from the node.

func (*HarnessNode) AdminMacPath 

func (hn *HarnessNode) AdminMacPath() string

AdminMacPath returns the filepath to the admin.macaroon file for this node.

func (*HarnessNode) ChanBackupPath 

func (hn *HarnessNode) ChanBackupPath() string

ChanBackupPath returns the fielpath to the on-disk channel.backup file for this node.

func (*HarnessNode) ConnectRPC 

func (hn *HarnessNode) ConnectRPC(useMacs bool) (*grpc.ClientConn, error)

ConnectRPC uses the TLS certificate and admin macaroon files written by the lnd node to create a gRPC client connection.

func (*HarnessNode) ConnectRPCWithMacaroon 

func (hn *HarnessNode) ConnectRPCWithMacaroon(mac *macaroon.Macaroon) (
	*grpc.ClientConn, error)

ConnectRPCWithMacaroon uses the TLS certificate and given macaroon to create a gRPC client connection.

func (*HarnessNode) DBDir 

func (hn *HarnessNode) DBDir() string

DBDir returns the path for the directory holding channeldb file(s).

func (*HarnessNode) DBPath 

func (hn *HarnessNode) DBPath() string

DBPath returns the filepath to the channeldb database file for this node.

func (*HarnessNode) FetchNodeInfo 

func (hn *HarnessNode) FetchNodeInfo() error

FetchNodeInfo queries an unlocked node to retrieve its public key.

func (*HarnessNode) Init 

func (hn *HarnessNode) Init(
	initReq *lnrpc.InitWalletRequest) (*lnrpc.InitWalletResponse, error)

Init initializes a harness node by passing the init request via rpc. After the request is submitted, this method will block until a macaroon-authenticated RPC connection can be established to the harness node. Once established, the new connection is used to initialize the LightningClient and subscribes the HarnessNode to topology changes.

func (*HarnessNode) InitChangePassword 

func (hn *HarnessNode) InitChangePassword(
	chngPwReq *lnrpc.ChangePasswordRequest) (*lnrpc.ChangePasswordResponse,
	error)

InitChangePassword initializes a harness node by passing the change password request via RPC. After the request is submitted, this method will block until a macaroon-authenticated RPC connection can be established to the harness node. Once established, the new connection is used to initialize the LightningClient and subscribes the HarnessNode to topology changes.

func (*HarnessNode) InitRPCClients 

func (hn *HarnessNode) InitRPCClients(c *grpc.ClientConn)

InitRPCClients initializes a list of RPC clients for the node.

func (*HarnessNode) InvoiceMacPath 

func (hn *HarnessNode) InvoiceMacPath() string

InvoiceMacPath returns the filepath to the invoice.macaroon file for this node.

func (*HarnessNode) Name 

func (hn *HarnessNode) Name() string

Name returns the name of this node set during initialization.

func (*HarnessNode) PrintErr 

func (hn *HarnessNode) PrintErr(format string, a ...interface{})

PrintErr prints an error to the console.

func (*HarnessNode) ReadMacPath 

func (hn *HarnessNode) ReadMacPath() string

ReadMacPath returns the filepath to the readonly.macaroon file for this node.

func (*HarnessNode) ReadMacaroon 

func (hn *HarnessNode) ReadMacaroon(macPath string, timeout time.Duration) (
	*macaroon.Macaroon, error)

ReadMacaroon waits a given duration for the macaroon file to be created. If the file is readable within the timeout, its content is de-serialized as a macaroon and returned.

func (*HarnessNode) SetExtraArgs 

func (hn *HarnessNode) SetExtraArgs(extraArgs []string)

SetExtraArgs assigns the ExtraArgs field for the node's configuration. The changes will take effect on restart.

func (*HarnessNode) String 

func (hn *HarnessNode) String() string

String gives the internal state of the node which is useful for debugging.

func (*HarnessNode) TLSCertStr 

func (hn *HarnessNode) TLSCertStr() string

TLSCertStr returns the path where the TLS certificate is stored.

func (*HarnessNode) TLSKeyStr 

func (hn *HarnessNode) TLSKeyStr() string

TLSKeyStr returns the path where the TLS key is stored.

func (*HarnessNode) Unlock 

func (hn *HarnessNode) Unlock(unlockReq *lnrpc.UnlockWalletRequest) error

Unlock attempts to unlock the wallet of the target HarnessNode. This method should be called after the restart of a HarnessNode that was created with a seed+password. Once this method returns, the HarnessNode will be ready to accept normal gRPC requests and harness command.

func (*HarnessNode) WaitForBalance 

func (hn *HarnessNode) WaitForBalance(expectedBalance ltcutil.Amount,
	confirmed bool) error

WaitForBalance waits until the node sees the expected confirmed/unconfirmed balance within their wallet.

func (*HarnessNode) WaitForBlockchainSync 

func (hn *HarnessNode) WaitForBlockchainSync() error

WaitForBlockchainSync waits for the target node to be fully synchronized with the blockchain. If the passed context object has a set timeout, it will continually poll until the timeout has elapsed. In the case that the chain isn't synced before the timeout is up, this function will return an error.

func (*HarnessNode) WaitForChannelPolicyUpdate 

func (hn *HarnessNode) WaitForChannelPolicyUpdate(
	advertisingNode string, policy *lnrpc.RoutingPolicy,
	chanPoint *lnrpc.ChannelPoint, includeUnannounced bool) error

WaitForChannelPolicyUpdate will block until a channel policy with the target outpoint and advertisingNode is seen within the network.

func (*HarnessNode) WaitForNetworkChannelClose 

func (hn *HarnessNode) WaitForNetworkChannelClose(
	chanPoint *lnrpc.ChannelPoint) error

WaitForNetworkChannelClose will block until a channel with the target outpoint is seen as closed within the network. A channel is considered closed once a transaction spending the funding outpoint is seen within a confirmed block.

func (*HarnessNode) WaitForNetworkChannelOpen 

func (hn *HarnessNode) WaitForNetworkChannelOpen(
	chanPoint *lnrpc.ChannelPoint) error

WaitForNetworkChannelOpen will block until a channel with the target outpoint is seen as being fully advertised within the network. A channel is considered "fully advertised" once both of its directional edges has been advertised within the test Lightning Network.

func (*HarnessNode) WaitUntilLeader 

func (hn *HarnessNode) WaitUntilLeader(timeout time.Duration) error

WaitUntilLeader attempts to finish the start procedure by initiating an RPC connection and setting up the wallet unlocker client. This is needed when a node that has recently been started was waiting to become the leader and we're at the point when we expect that it is the leader now (awaiting unlock).

func (*HarnessNode) WaitUntilServerActive 

func (hn *HarnessNode) WaitUntilServerActive() error

WaitUntilServerActive waits until the lnd daemon is fully started.

func (*HarnessNode) WaitUntilStarted 

func (hn *HarnessNode) WaitUntilStarted() error

WaitUntilStarted waits until the wallet state flips from "WAITING_TO_START".

func (*HarnessNode) WaitUntilStateReached 

func (hn *HarnessNode) WaitUntilStateReached(
	desiredState lnrpc.WalletState) error

WaitUntilStateReached waits until the given wallet state (or one of the states following it) has been reached.

type NetworkHarness 

type NetworkHarness struct {

	// Miner is a reference to a running full node that can be used to
	// create new blocks on the network.
	Miner *HarnessMiner

	// BackendCfg houses the information necessary to use a node as LND
	// chain backend, such as rpc configuration, P2P information etc.
	BackendCfg BackendConfig

	// Alice and Bob are the initial seeder nodes that are automatically
	// created to be the initial participants of the test network.
	Alice *HarnessNode
	Bob   *HarnessNode
	// contains filtered or unexported fields
}

NetworkHarness is an integration testing harness for the lightning network. Building on top of HarnessNode, it is responsible for handling interactions among different nodes. The harness by default is created with two active nodes on the network: Alice and Bob.

func NewNetworkHarness 

func NewNetworkHarness(m *HarnessMiner, b BackendConfig, lndBinary string,
	dbBackend DatabaseBackend) (*NetworkHarness, error)

NewNetworkHarness creates a new network test harness. TODO(roasbeef): add option to use golang's build library to a binary of the current repo. This will save developers from having to manually `go install` within the repo each time before changes

func (*NetworkHarness) AssertChannelExists 

func (n *NetworkHarness) AssertChannelExists(node *HarnessNode,
	chanPoint *wire.OutPoint, checks ...func(*lnrpc.Channel)) error

AssertChannelExists asserts that an active channel identified by the specified channel point exists from the point-of-view of the node. It takes an optional set of check functions which can be used to make further assertions using channel's values. These functions are responsible for failing the test themselves if they do not pass. nolint: interfacer

func (*NetworkHarness) BackupDb 

func (n *NetworkHarness) BackupDb(hn *HarnessNode) error

BackupDb creates a backup of the current database.

func (*NetworkHarness) CloseChannel 

func (n *NetworkHarness) CloseChannel(lnNode *HarnessNode,
	cp *lnrpc.ChannelPoint, force bool) (lnrpc.Lightning_CloseChannelClient,
	*chainhash.Hash, error)

CloseChannel attempts to close the channel indicated by the passed channel point, initiated by the passed lnNode. If the passed context has a timeout, an error is returned if that timeout is reached before the channel close is pending.

func (*NetworkHarness) ConnectNodes 

func (n *NetworkHarness) ConnectNodes(t *testing.T, a, b *HarnessNode)

ConnectNodes attempts to create a connection between nodes a and b.

func (*NetworkHarness) ConnectNodesPerm 

func (n *NetworkHarness) ConnectNodesPerm(t *testing.T,
	a, b *HarnessNode)

ConnectNodesPerm attempts to connect nodes a and b and sets node b as a peer that node a should persistently attempt to reconnect to if they become disconnected.

func (*NetworkHarness) DisconnectNodes 

func (n *NetworkHarness) DisconnectNodes(a, b *HarnessNode) error

DisconnectNodes disconnects node a from node b by sending RPC message from a node to b node

func (*NetworkHarness) DumpLogs 

func (n *NetworkHarness) DumpLogs(node *HarnessNode) (string, error)

DumpLogs reads the current logs generated by the passed node, and returns the logs as a single string. This function is useful for examining the logs of a particular node in the case of a test failure. Logs from lightning node being generated with delay - you should add time.Sleep() in order to get all logs.

func (*NetworkHarness) EnsureConnected 

func (n *NetworkHarness) EnsureConnected(t *testing.T, a, b *HarnessNode)

EnsureConnected will try to connect to two nodes, returning no error if they are already connected. If the nodes were not connected previously, this will behave the same as ConnectNodes. If a pending connection request has already been made, the method will block until the two nodes appear in each other's peers list, or until the 15s timeout expires.

func (*NetworkHarness) KillNode 

func (n *NetworkHarness) KillNode(node *HarnessNode) error

KillNode kills the node (but won't wait for the node process to stop).

func (*NetworkHarness) LookUpNodeByPub 

func (n *NetworkHarness) LookUpNodeByPub(pubStr string) (*HarnessNode, error)

LookUpNodeByPub queries the set of active nodes to locate a node according to its public key. The second value will be true if the node was found, and false otherwise.

func (*NetworkHarness) NewNode 

func (n *NetworkHarness) NewNode(t *testing.T,
	name string, extraArgs []string, opts ...NodeOption) *HarnessNode

NewNode fully initializes a returns a new HarnessNode bound to the current instance of the network harness. The created node is running, but not yet connected to other nodes within the network.

func (*NetworkHarness) NewNodeEtcd 

func (n *NetworkHarness) NewNodeEtcd(name string, etcdCfg *etcd.Config,
	password []byte, cluster, wait bool) (*HarnessNode, error)

NewNodeWithSeedEtcd starts a new node with seed that'll use an external etcd database as its (remote) channel and wallet DB. The passsed cluster flag indicates that we'd like the node to join the cluster leader election. If the wait flag is false then we won't wait until RPC is available (this is useful when the node is not expected to become the leader right away).

func (*NetworkHarness) NewNodeRemoteSigner 

func (n *NetworkHarness) NewNodeRemoteSigner(name string, extraArgs []string,
	password []byte, watchOnly *lnrpc.WatchOnly) (*HarnessNode, error)

func (*NetworkHarness) NewNodeWithSeed 

func (n *NetworkHarness) NewNodeWithSeed(name string, extraArgs []string,
	password []byte, statelessInit bool) (*HarnessNode, []string, []byte,
	error)

NewNodeWithSeed fully initializes a new HarnessNode after creating a fresh aezeed. The provided password is used as both the aezeed password and the wallet password. The generated mnemonic is returned along with the initialized harness node.

func (*NetworkHarness) NewNodeWithSeedEtcd 

func (n *NetworkHarness) NewNodeWithSeedEtcd(name string, etcdCfg *etcd.Config,
	password []byte, entropy []byte, statelessInit, cluster bool) (
	*HarnessNode, []string, []byte, error)

NewNodeWithSeedEtcd starts a new node with seed that'll use an external etcd database as its (remote) channel and wallet DB. The passsed cluster flag indicates that we'd like the node to join the cluster leader election.

func (*NetworkHarness) OpenChannel 

func (n *NetworkHarness) OpenChannel(srcNode, destNode *HarnessNode,
	p OpenChannelParams) (lnrpc.Lightning_OpenChannelClient, error)

OpenChannel attempts to open a channel between srcNode and destNode with the passed channel funding parameters. If the passed context has a timeout, then if the timeout is reached before the channel pending notification is received, an error is returned. The confirmed boolean determines whether we should fund the channel with confirmed outputs or not.

func (*NetworkHarness) OpenPendingChannel 

func (n *NetworkHarness) OpenPendingChannel(srcNode, destNode *HarnessNode,
	amt ltcutil.Amount,
	pushAmt ltcutil.Amount) (*lnrpc.PendingUpdate, error)

OpenPendingChannel attempts to open a channel between srcNode and destNode with the passed channel funding parameters. If the passed context has a timeout, then if the timeout is reached before the channel pending notification is received, an error is returned.

func (*NetworkHarness) ProcessErrors 

func (n *NetworkHarness) ProcessErrors() <-chan error

ProcessErrors returns a channel used for reporting any fatal process errors. If any of the active nodes within the harness' test network incur a fatal error, that error is sent over this channel.

func (*NetworkHarness) RegisterNode 

func (n *NetworkHarness) RegisterNode(node *HarnessNode)

RegisterNode records a new HarnessNode in the NetworkHarnesses map of known nodes. This method should only be called with nodes that have successfully retrieved their public keys via FetchNodeInfo.

func (*NetworkHarness) RestartNode 

func (n *NetworkHarness) RestartNode(node *HarnessNode, callback func() error,
	chanBackups ...*lnrpc.ChanBackupSnapshot) error

RestartNode attempts to restart a lightning node by shutting it down cleanly, then restarting the process. This function is fully blocking. Upon restart, the RPC connection to the node will be re-attempted, continuing iff the connection attempt is successful. If the callback parameter is non-nil, then the function will be executed after the node shuts down, but *before* the process has been started up again.

This method can be useful when testing edge cases such as a node broadcast and invalidated prior state, or persistent state recovery, simulating node crashes, etc. Additionally, each time the node is restarted, the caller can pass a set of SCBs to pass in via the Unlock method allowing them to restore channels during restart.

func (*NetworkHarness) RestartNodeNoUnlock 

func (n *NetworkHarness) RestartNodeNoUnlock(node *HarnessNode,
	callback func() error, wait bool) error

RestartNodeNoUnlock attempts to restart a lightning node by shutting it down cleanly, then restarting the process. In case the node was setup with a seed, it will be left in the unlocked state. This function is fully blocking. If the callback parameter is non-nil, then the function will be executed after the node shuts down, but *before* the process has been started up again.

func (*NetworkHarness) RestoreDb 

func (n *NetworkHarness) RestoreDb(hn *HarnessNode) error

RestoreDb restores a database backup.

func (*NetworkHarness) RestoreNodeWithSeed 

func (n *NetworkHarness) RestoreNodeWithSeed(name string, extraArgs []string,
	password []byte, mnemonic []string, rootKey string, recoveryWindow int32,
	chanBackups *lnrpc.ChanBackupSnapshot,
	opts ...NodeOption) (*HarnessNode, error)

RestoreNodeWithSeed fully initializes a HarnessNode using a chosen mnemonic, password, recovery window, and optionally a set of static channel backups. After providing the initialization request to unlock the node, this method will finish initializing the LightningClient such that the HarnessNode can be used for regular rpc operations.

func (*NetworkHarness) SaveProfilesPages 

func (n *NetworkHarness) SaveProfilesPages(t *testing.T)

SaveProfilesPages hits profiles pages of all active nodes and writes it to disk using a similar naming scheme as to the regular set of logs.

func (*NetworkHarness) SendCoins 

func (n *NetworkHarness) SendCoins(t *testing.T, amt ltcutil.Amount,
	target *HarnessNode)

SendCoins attempts to send amt satoshis from the internal mining node to the targeted lightning node using a P2WKH address. 6 blocks are mined after in order to confirm the transaction.

func (*NetworkHarness) SendCoinsNP2WKH 

func (n *NetworkHarness) SendCoinsNP2WKH(t *testing.T, amt ltcutil.Amount,
	target *HarnessNode)

SendCoinsNP2WKH attempts to send amt satoshis from the internal mining node to the targeted lightning node using a NP2WKH address.

func (*NetworkHarness) SendCoinsUnconfirmed 

func (n *NetworkHarness) SendCoinsUnconfirmed(t *testing.T, amt ltcutil.Amount,
	target *HarnessNode)

SendCoinsUnconfirmed sends coins from the internal mining node to the target lightning node using a P2WPKH address. No blocks are mined after, so the transaction remains unconfirmed.

func (*NetworkHarness) SetFeeEstimate 

func (n *NetworkHarness) SetFeeEstimate(fee chainfee.SatPerKWeight)

func (*NetworkHarness) SetFeeEstimateWithConf 

func (n *NetworkHarness) SetFeeEstimateWithConf(
	fee chainfee.SatPerKWeight, conf uint32)

func (*NetworkHarness) SetUp 

func (n *NetworkHarness) SetUp(t *testing.T,
	testCase string, lndArgs []string) error

SetUp starts the initial seeder nodes within the test harness. The initial node's wallets will be funded wallets with ten 1 BTC outputs each. Finally rpc clients capable of communicating with the initial seeder nodes are created. Nodes are initialized with the given extra command line flags, which should be formatted properly - "--arg=value".

func (*NetworkHarness) ShutdownNode 

func (n *NetworkHarness) ShutdownNode(node *HarnessNode) error

ShutdownNode stops an active lnd process and returns when the process has exited and any temporary directories have been cleaned up.

func (*NetworkHarness) Stop 

func (n *NetworkHarness) Stop()

Stop stops the test harness.

func (*NetworkHarness) StopNode 

func (n *NetworkHarness) StopNode(node *HarnessNode) error

StopNode stops the target node, but doesn't yet clean up its directories. This can be used to temporarily bring a node down during a test, to be later started up again.

func (*NetworkHarness) SuspendNode 

func (n *NetworkHarness) SuspendNode(node *HarnessNode) (func() error, error)

SuspendNode stops the given node and returns a callback that can be used to start it again.

func (*NetworkHarness) TearDown 

func (n *NetworkHarness) TearDown() error

TearDown tears down all active nodes within the test lightning network.

func (*NetworkHarness) WaitForChannelClose 

func (n *NetworkHarness) WaitForChannelClose(
	closeChanStream lnrpc.Lightning_CloseChannelClient) (
	*chainhash.Hash, error)

WaitForChannelClose waits for a notification from the passed channel close stream that the node has deemed the channel has been fully closed. If the passed context has a timeout, then if the timeout is reached before the notification is received then an error is returned.

func (*NetworkHarness) WaitForChannelOpen 

func (n *NetworkHarness) WaitForChannelOpen(
	openChanStream lnrpc.Lightning_OpenChannelClient) (
	*lnrpc.ChannelPoint, error)

WaitForChannelOpen waits for a notification that a channel is open by consuming a message from the past open channel stream. If the passed context has a timeout, then if the timeout is reached before the channel has been opened, then an error is returned.

type NodeConfig 

type NodeConfig interface {
	// BaseConfig returns the base node configuration struct.
	BaseConfig() *BaseNodeConfig

	// GenerateListeningPorts generates the ports to listen on designated
	// for the current lightning network test.
	GenerateListeningPorts()

	// GenArgs generates a slice of command line arguments from the
	// lightning node config struct.
	GenArgs() []string
}

NodeConfig is the basic interface a node configuration must implement.

type NodeOption 

type NodeOption func(*BaseNodeConfig)

NodeOption is a function for updating a node's configuration.

type OpenChannelParams 

type OpenChannelParams struct {
	// Amt is the local amount being put into the channel.
	Amt ltcutil.Amount

	// PushAmt is the amount that should be pushed to the remote when the
	// channel is opened.
	PushAmt ltcutil.Amount

	// Private is a boolan indicating whether the opened channel should be
	// private.
	Private bool

	// SpendUnconfirmed is a boolean indicating whether we can utilize
	// unconfirmed outputs to fund the channel.
	SpendUnconfirmed bool

	// MinHtlc is the htlc_minimum_msat value set when opening the channel.
	MinHtlc lnwire.MilliSatoshi

	// RemoteMaxHtlcs is the remote_max_htlcs value set when opening the
	// channel, restricting the number of concurrent HTLCs the remote party
	// can add to a commitment.
	RemoteMaxHtlcs uint16

	// FundingShim is an optional funding shim that the caller can specify
	// in order to modify the channel funding workflow.
	FundingShim *lnrpc.FundingShim

	// SatPerVByte is the amount of satoshis to spend in chain fees per virtual
	// byte of the transaction.
	SatPerVByte ltcutil.Amount

	// CommitmentType is the commitment type that should be used for the
	// channel to be opened.
	CommitmentType lnrpc.CommitmentType
}

OpenChannelParams houses the params to specify when opening a new channel.

type RPCClients 

type RPCClients struct {
	LN               lnrpc.LightningClient
	WalletUnlocker   lnrpc.WalletUnlockerClient
	Invoice          invoicesrpc.InvoicesClient
	Signer           signrpc.SignerClient
	Router           routerrpc.RouterClient
	WalletKit        walletrpc.WalletKitClient
	Watchtower       watchtowerrpc.WatchtowerClient
	WatchtowerClient wtclientrpc.WatchtowerClientClient
	State            lnrpc.StateClient
	// contains filtered or unexported fields
}

RPCClients wraps a list of RPC clients into a single struct for easier access.

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