GetInfo

GetInfo gets basic information about the loop daemon.

Source: looprpc/client.proto

gRPC

rpc GetInfo (GetInfoRequest) returns (GetInfoResponse);

REST

HTTP Method	Path
GET	/v1/loop/info

Code Samples

gRPC

Javascript

const fs = require('fs');
const grpc = require('@grpc/grpc-js');
const protoLoader = require('@grpc/proto-loader');

const GRPC_HOST = 'localhost:11010'
const MACAROON_PATH = 'LOOP_DIR/regtest/loop.macaroon'
const TLS_PATH = 'LOOP_DIR/tls.cert'

const loaderOptions = {
  keepCase: true,
  longs: String,
  enums: String,
  defaults: true,
  oneofs: true,
};
const packageDefinition = protoLoader.loadSync('looprpc/client.proto', loaderOptions);
const looprpc = grpc.loadPackageDefinition(packageDefinition).looprpc;
process.env.GRPC_SSL_CIPHER_SUITES = 'HIGH+ECDSA';
const tlsCert = fs.readFileSync(TLS_PATH);
const sslCreds = grpc.credentials.createSsl(tlsCert);
const macaroon = fs.readFileSync(MACAROON_PATH).toString('hex');
const macaroonCreds = grpc.credentials.createFromMetadataGenerator(function(args, callback) {
  let metadata = new grpc.Metadata();
  metadata.add('macaroon', macaroon);
  callback(null, metadata);
});
let creds = grpc.credentials.combineChannelCredentials(sslCreds, macaroonCreds);
let client = new looprpc.SwapClient(GRPC_HOST, creds);
let request = {};
client.getInfo(request, function(err, response) {
  console.log(response);
});
// Console output:
//  {
//    "version": <string>,
//    "network": <string>,
//    "rpc_listen": <string>,
//    "rest_listen": <string>,
//    "macaroon_path": <string>,
//    "tls_cert_path": <string>,
//    "loop_out_stats": <LoopStats>,
//    "loop_in_stats": <LoopStats>,
//  }

Python

import codecs, grpc, os
# Generate the following 2 modules by compiling the looprpc/client.proto with the grpcio-tools.
# See https://github.com/lightningnetwork/lnd/blob/master/docs/grpc/python.md for instructions.
import client_pb2 as looprpc, client_pb2_grpc as clientstub

GRPC_HOST = 'localhost:11010'
MACAROON_PATH = 'LOOP_DIR/regtest/loop.macaroon'
TLS_PATH = 'LOOP_DIR/tls.cert'

# create macaroon credentials
macaroon = codecs.encode(open(MACAROON_PATH, 'rb').read(), 'hex')
def metadata_callback(context, callback):
  callback([('macaroon', macaroon)], None)
auth_creds = grpc.metadata_call_credentials(metadata_callback)
# create SSL credentials
os.environ['GRPC_SSL_CIPHER_SUITES'] = 'HIGH+ECDSA'
cert = open(TLS_PATH, 'rb').read()
ssl_creds = grpc.ssl_channel_credentials(cert)
# combine macaroon and SSL credentials
combined_creds = grpc.composite_channel_credentials(ssl_creds, auth_creds)
# make the request
channel = grpc.secure_channel(GRPC_HOST, combined_creds)
stub = clientstub.SwapClientStub(channel)
request = looprpc.GetInfoRequest()
response = stub.GetInfo(request)
print(response)
# {
#    "version": <string>,
#    "network": <string>,
#    "rpc_listen": <string>,
#    "rest_listen": <string>,
#    "macaroon_path": <string>,
#    "tls_cert_path": <string>,
#    "loop_out_stats": <LoopStats>,
#    "loop_in_stats": <LoopStats>,
# }

REST

Javascript

const fs = require('fs');
const request = require('request');

const REST_HOST = 'localhost:8081'
const MACAROON_PATH = 'LOOP_DIR/regtest/loop.macaroon'

let options = {
  url: `https://${REST_HOST}/v1/loop/info`,
  // Work-around for self-signed certificates.
  rejectUnauthorized: false,
  json: true,
  headers: {
    'Grpc-Metadata-macaroon': fs.readFileSync(MACAROON_PATH).toString('hex'),
  },
}
request.get(options, function(error, response, body) {
  console.log(body);
});
// Console output:
//  {
//    "version": <string>, // <string> 
//    "network": <string>, // <string> 
//    "rpc_listen": <string>, // <string> 
//    "rest_listen": <string>, // <string> 
//    "macaroon_path": <string>, // <string> 
//    "tls_cert_path": <string>, // <string> 
//    "loop_out_stats": <object>, // <LoopStats> 
//    "loop_in_stats": <object>, // <LoopStats> 
//  }

Python

import base64, codecs, json, requests

REST_HOST = 'localhost:8081'
MACAROON_PATH = 'LOOP_DIR/regtest/loop.macaroon'
TLS_PATH = 'LOOP_DIR/tls.cert'

url = f'https://{REST_HOST}/v1/loop/info'
macaroon = codecs.encode(open(MACAROON_PATH, 'rb').read(), 'hex')
headers = {'Grpc-Metadata-macaroon': macaroon}
r = requests.get(url, headers=headers, verify=TLS_PATH)
print(r.json())
# {
#    "version": <string>,
#    "network": <string>,
#    "rpc_listen": <string>,
#    "rest_listen": <string>,
#    "macaroon_path": <string>,
#    "tls_cert_path": <string>,
#    "loop_out_stats": <LoopStats>,
#    "loop_in_stats": <LoopStats>,
# }

Shell

$ loop getinfo --help

NAME:
   loop getinfo - show general information about the loop daemon

USAGE:
   loop getinfo [arguments...]

DESCRIPTION:
   Displays general information about the daemon like current version, connection parameters and basic swap information.

Messages

looprpc.GetInfoRequest

Source: looprpc/client.proto

note

This request has no parameters.

looprpc.GetInfoResponse

Source: looprpc/client.proto

Field	gRPC Type	REST Type
version The current daemon version.	string	string
network The network the daemon is running on.	string	string
rpc_listen Host and port of the loopd grpc server.	string	string
rest_listen Host and port of the loopd rest server.	string	string
macaroon_path Loop's macaroon path that clients use to talk to the daemon.	string	string
tls_cert_path Loop's tls cert path	string	string
loop_out_stats Statistics about loop outs.	LoopStats	object
loop_in_stats Statistics about loop ins.	LoopStats	object

Nested Messages

looprpc.LoopStats

Field	gRPC Type	REST Type
pending_count Number of currently pending swaps.	uint64	string
success_count Number of succeeded swaps.	uint64	string
fail_count Number failed swaps.	uint64	string
sum_pending_amt The sum of all pending swap amounts.	int64	string
sum_succeeded_amt The sum of all succeeded swap amounts.	int64	string