213 lines
8.2 KiB
Markdown
213 lines
8.2 KiB
Markdown
lnrpc
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=====
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[](https://travis-ci.org/lightningnetwork/lnd)
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[](https://github.com/lightningnetwork/lnd/blob/master/LICENSE)
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[](http://godoc.org/github.com/lightningnetwork/lnd/lnrpc)
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This lnrpc package implements both a client and server for `lnd`s RPC system
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which is based off of the high-performance cross-platform
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[gRPC](http://www.grpc.io/) RPC framework. By default, only the Go
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client+server libraries are compiled within the package. In order to compile
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the client side libraries for other supported languages, the `protoc` tool will
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need to be used to generate the compiled protos for a specific language.
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The following languages are supported as clients to `lnrpc`: C++, Go, Node.js,
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Java, Ruby, Android Java, PHP, Python, C#, Objective-C.
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## Service: Lightning
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The list of defined RPCs on the service `Lightning` are the following (with a brief
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description):
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* WalletBalance
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* Returns the wallet's current confirmed balance in BTC.
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* ChannelBalance
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* Returns the daemons' available aggregate channel balance in BTC.
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* GetTransactions
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* Returns a list of on-chain transactions that pay to or are spends from
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`lnd`.
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* SendCoins
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* Sends an amount of satoshis to a specific address.
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* ListUnspent
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* Lists available utxos within a range of confirmations.
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* SubscribeTransactions
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* Returns a stream which sends async notifications each time a transaction
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is created or one is received that pays to us.
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* SendMany
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* Allows the caller to create a transaction with an arbitrary fan-out
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(many outputs).
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* NewAddress
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* Returns a new address, the following address types are supported:
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pay-to-witness-key-hash (p2wkh) and nested-pay-to-witness-key-hash
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(np2wkh).
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* SignMessage
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* Signs a message with the node's identity key and returns a
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zbase32 encoded signature.
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* VerifyMessage
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* Verifies a signature signed by another node on a message. The other node
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must be an active node in the channel database.
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* ConnectPeer
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* Connects to a peer identified by a public key and host.
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* DisconnectPeer
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* Disconnects a peer identified by a public key.
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* ListPeers
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* Lists all available connected peers.
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* GetInfo
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* Returns basic data concerning the daemon.
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* PendingChannels
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* List the number of pending (not fully confirmed) channels.
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* ListChannels
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* List all active channels the daemon manages.
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* OpenChannelSync
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* OpenChannelSync is a synchronous version of the OpenChannel RPC call.
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* OpenChannel
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* Attempts to open a channel to a target peer with a specific amount and
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push amount.
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* CloseChannel
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* Attempts to close a target channel. A channel can either be closed
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cooperatively if the channel peer is online, or using a "force" close to
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broadcast the latest channel state.
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* SendPayment
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* Send a payment over Lightning to a target peer.
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* SendPaymentSync
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* SendPaymentSync is the synchronous non-streaming version of SendPayment.
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* SendToRoute
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* Send a payment over Lightning to a target peer through a route explicitly
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defined by the user.
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* SendToRouteSync
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* SendToRouteSync is the synchronous non-streaming version of SendToRoute.
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* AddInvoice
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* Adds an invoice to the daemon. Invoices are automatically settled once
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seen as an incoming HTLC.
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* ListInvoices
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* Lists all stored invoices.
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* LookupInvoice
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* Attempts to look up an invoice by payment hash (r-hash).
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* SubscribeInvoices
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* Creates a uni-directional stream which receives async notifications as
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the daemon settles invoices
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* DecodePayReq
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* Decode a payment request, returning a full description of the conditions
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encoded within the payment request.
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* ListPayments
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* List all outgoing Lightning payments the daemon has made.
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* DeleteAllPayments
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* Deletes all outgoing payments from DB.
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* DescribeGraph
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* Returns a description of the known channel graph from the PoV of the
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node.
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* GetChanInfo
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* Returns information for a specific channel identified by channel ID.
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* GetNodeInfo
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* Returns information for a particular node identified by its identity
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public key.
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* QueryRoutes
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* Queries for a possible route to a target peer which can carry a certain
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amount of payment.
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* GetNetworkInfo
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* Returns some network level statistics.
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* StopDaemon
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* Sends a shutdown request to the interrupt handler, triggering a graceful
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shutdown of the daemon.
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* SubscribeChannelGraph
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* Creates a stream which receives async notifications upon any changes to the
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channel graph topology from the point of view of the responding node.
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* DebugLevel
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* Set logging verbosity of lnd programmatically
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* FeeReport
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* Allows the caller to obtain a report detailing the current fee schedule
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enforced by the node globally for each channel.
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* UpdateChannelPolicy
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* Allows the caller to update the fee schedule and channel policies for all channels
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globally, or a particular channel.
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* ForwardingHistory
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* ForwardingHistory allows the caller to query the htlcswitch for a
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record of all HTLCs forwarded.
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* BakeMacaroon
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* Bakes a new macaroon with the provided list of permissions and
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restrictions
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## Service: WalletUnlocker
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The list of defined RPCs on the service `WalletUnlocker` are the following (with a brief
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description):
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* CreateWallet
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* Set encryption password for the wallet database.
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* UnlockWallet
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* Provide a password to unlock the wallet database.
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## Installation and Updating
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```bash
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$ go get -u github.com/lightningnetwork/lnd/lnrpc
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```
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## Generate protobuf definitions
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### Linux
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For linux there is an easy install script that is also used for the Travis CI
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build. Just run the following command (requires `sudo` permissions and the tools
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`make`, `go`, `wget` and `unzip` to be installed) from the repository's root
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folder:
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`./scripts/install_travis_proto.sh`
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### MacOS / Unix like systems
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1. Download [v.3.4.0](https://github.com/google/protobuf/releases/tag/v3.4.0) of
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`protoc` for your operating system and add it to your `PATH`.
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For example, if using macOS:
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```bash
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$ curl -LO https://github.com/google/protobuf/releases/download/v3.4.0/protoc-3.4.0-osx-x86_64.zip
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$ unzip protoc-3.4.0-osx-x86_64.zip -d protoc
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$ export PATH=$PWD/protoc/bin:$PATH
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```
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2. Install `golang/protobuf` at version `v1.3.2`.
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```bash
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$ git clone https://github.com/golang/protobuf $GOPATH/src/github.com/golang/protobuf
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$ cd $GOPATH/src/github.com/golang/protobuf
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$ git reset --hard v1.3.2
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$ make
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```
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3. Install 'genproto' at commit `20e1ac93f88cf06d2b1defb90b9e9e126c7dfff6`.
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```bash
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$ go get google.golang.org/genproto
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$ cd $GOPATH/src/google.golang.org/genproto
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$ git reset --hard 20e1ac93f88cf06d2b1defb90b9e9e126c7dfff6
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```
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4. Install `grpc-ecosystem/grpc-gateway` at version `v1.14.3`.
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```bash
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$ git clone https://github.com/grpc-ecosystem/grpc-gateway $GOPATH/src/github.com/grpc-ecosystem/grpc-gateway
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$ cd $GOPATH/src/github.com/grpc-ecosystem/grpc-gateway
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$ git reset --hard v1.14.3
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$ go install ./protoc-gen-grpc-gateway ./protoc-gen-swagger
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```
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5. Run [`gen_protos.sh`](https://github.com/lightningnetwork/lnd/blob/master/lnrpc/gen_protos.sh)
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or `make rpc` to generate new protobuf definitions.
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## Format .proto files
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We use `clang-format` to make sure the `.proto` files are formatted correctly.
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You can install the formatter on Ubuntu by running `apt install clang-format`.
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Consult [this page](http://releases.llvm.org/download.html) to find binaries
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for other operating systems or distributions.
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## Makefile commands
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The following commands are available with `make`:
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* `rpc`: Compile `.proto` files (calls `lnrpc/gen_protos.sh`).
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* `rpc-format`: Formats all `.proto` files according to our formatting rules.
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Requires `clang-format`, see previous chapter.
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* `rpc-check`: Runs both previous commands and makes sure the git work tree is
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not dirty. This can be used to check that the `.proto` files are formatted
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and compiled properly.
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