lnd.xprv/lnrpc/README.md

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lnrpc
=====
[![Build Status](http://img.shields.io/travis/lightningnetwork/lnd.svg)](https://travis-ci.org/lightningnetwork/lnd)
[![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/lightningnetwork/lnd/blob/master/LICENSE)
[![GoDoc](https://img.shields.io/badge/godoc-reference-blue.svg)](http://godoc.org/github.com/lightningnetwork/lnd/lnrpc)
This lnrpc package implements both a client and server for `lnd`s RPC system
which is based off of the high-performance cross-platform
[gRPC](http://www.grpc.io/) RPC framework. By default, only the Go
client+server libraries are compiled within the package. In order to compile
the client side libraries for other supported languages, the `protoc` tool will
need to be used to generate the compiled protos for a specific language.
The following languages are supported as clients to `lnrpc`: C++, Go, Node.js,
Java, Ruby, Android Java, PHP, Python, C#, Objective-C.
## Service: Lightning
The list of defined RPCs on the service `Lightning` are the following (with a brief
description):
* WalletBalance
* Returns the wallet's current confirmed balance in BTC.
* ChannelBalance
* Returns the daemons' available aggregate channel balance in BTC.
* GetTransactions
* Returns a list of on-chain transactions that pay to or are spends from
`lnd`.
* SendCoins
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* Sends an amount of satoshis to a specific address.
* ListUnspent
* Lists available utxos within a range of confirmations.
* SubscribeTransactions
* Returns a stream which sends async notifications each time a transaction
is created or one is received that pays to us.
* SendMany
* Allows the caller to create a transaction with an arbitrary fan-out
(many outputs).
* NewAddress
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* Returns a new address, the following address types are supported:
pay-to-witness-key-hash (p2wkh) and nested-pay-to-witness-key-hash
(np2wkh).
* SignMessage
* Signs a message with the node's identity key and returns a
zbase32 encoded signature.
* VerifyMessage
* Verifies a signature signed by another node on a message. The other node
must be an active node in the channel database.
* ConnectPeer
* Connects to a peer identified by a public key and host.
* DisconnectPeer
* Disconnects a peer identified by a public key.
* ListPeers
* Lists all available connected peers.
* GetInfo
* Returns basic data concerning the daemon.
* GetRecoveryInfo
* Returns information about recovery process.
* PendingChannels
* List the number of pending (not fully confirmed) channels.
* ListChannels
* List all active channels the daemon manages.
* OpenChannelSync
* OpenChannelSync is a synchronous version of the OpenChannel RPC call.
* OpenChannel
* Attempts to open a channel to a target peer with a specific amount and
push amount.
* CloseChannel
* Attempts to close a target channel. A channel can either be closed
cooperatively if the channel peer is online, or using a "force" close to
broadcast the latest channel state.
* SendPayment
* Send a payment over Lightning to a target peer.
* SendPaymentSync
* SendPaymentSync is the synchronous non-streaming version of SendPayment.
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* SendToRoute
* Send a payment over Lightning to a target peer through a route explicitly
defined by the user.
* SendToRouteSync
* SendToRouteSync is the synchronous non-streaming version of SendToRoute.
* AddInvoice
* Adds an invoice to the daemon. Invoices are automatically settled once
seen as an incoming HTLC.
* ListInvoices
* Lists all stored invoices.
* LookupInvoice
* Attempts to look up an invoice by payment hash (r-hash).
* SubscribeInvoices
* Creates a uni-directional stream which receives async notifications as
the daemon settles invoices
* DecodePayReq
* Decode a payment request, returning a full description of the conditions
encoded within the payment request.
* ListPayments
* List all outgoing Lightning payments the daemon has made.
* DeleteAllPayments
* Deletes all outgoing payments from DB.
* DescribeGraph
* Returns a description of the known channel graph from the PoV of the
node.
* GetChanInfo
* Returns information for a specific channel identified by channel ID.
* GetNodeInfo
* Returns information for a particular node identified by its identity
public key.
* QueryRoutes
* Queries for a possible route to a target peer which can carry a certain
amount of payment.
* GetNetworkInfo
* Returns some network level statistics.
* StopDaemon
* Sends a shutdown request to the interrupt handler, triggering a graceful
shutdown of the daemon.
* SubscribeChannelGraph
* Creates a stream which receives async notifications upon any changes to the
channel graph topology from the point of view of the responding node.
* DebugLevel
* Set logging verbosity of lnd programmatically
* FeeReport
* Allows the caller to obtain a report detailing the current fee schedule
enforced by the node globally for each channel.
* UpdateChannelPolicy
* Allows the caller to update the fee schedule and channel policies for all channels
globally, or a particular channel.
* ForwardingHistory
* ForwardingHistory allows the caller to query the htlcswitch for a
record of all HTLCs forwarded.
* BakeMacaroon
* Bakes a new macaroon with the provided list of permissions and
restrictions
* ListMacaroonIDs
* List all the macaroon root key IDs that are in use.
* DeleteMacaroonID
* Remove a specific macaroon root key ID from the database and invalidates
all macaroons derived from the key with that ID.
## Service: WalletUnlocker
The list of defined RPCs on the service `WalletUnlocker` are the following (with a brief
description):
* CreateWallet
* Set encryption password for the wallet database.
* UnlockWallet
* Provide a password to unlock the wallet database.
## Installation and Updating
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```shell
⛰ go get -u github.com/lightningnetwork/lnd/lnrpc
```
## Generate protobuf definitions
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To compile the `lnrpc/**/*.proto` files and generate the protobuf definitions,
you need to have [Docker](https://docs.docker.com/get-docker/) and `make`
installed.
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Simply run `make rpc` to start the compilation process.
## Format .proto files
We use `clang-format` to make sure the `.proto` files are formatted correctly.
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When running the `make rpc` command, the `.proto` files are also formatted. To
format the files without also compiling them, you can install the `clang-format`
formatter on Ubuntu by running `apt install clang-format` or on Mac by running
`brew install clang-format`.
The `make format` command should then produce the correct result.
Consult [this page](http://releases.llvm.org/download.html) to find binaries
for other operating systems or distributions.
## Makefile commands
The following commands are available with `make`:
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* `rpc`: Compile and format all `.proto` files using Docker (calls
`lnrpc/gen_protos_docker.sh`).
* `rpc-format`: Formats all `.proto` files according to our formatting rules.
Requires `clang-format`, see previous chapter.
* `rpc-check`: Runs both previous commands and makes sure the git work tree is
not dirty. This can be used to check that the `.proto` files are formatted
and compiled properly.