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const fs = require('fs');
const path = require('path');
const grpc = require('grpc');
const protoLoader = require('@grpc/proto-loader');
const { promisify } = require('util');
module.exports = ({ tls, macaroon, server }) => {
const packageDefinition = protoLoader.loadSync('config/rpc.proto', {
keepCase: true,
longs: String,
enums: String,
defaults: true,
oneofs: true
});
const lnrpc = grpc.loadPackageDefinition(packageDefinition).lnrpc;
process.env.GRPC_SSL_CIPHER_SUITES = 'HIGH+ECDSA'
const lndCert = fs.readFileSync(tls);
const sslCreds = grpc.credentials.createSsl(lndCert);
const macaroonCreds = grpc.credentials.createFromMetadataGenerator(function(args, callback) {
const macaroonFile = fs.readFileSync(macaroon).toString('hex');
const metadata = new grpc.Metadata()
metadata.add('macaroon', macaroonFile);
callback(null, metadata);
});
const creds = grpc.credentials.combineChannelCredentials(sslCreds, macaroonCreds);
const lnd = new lnrpc.Lightning(server, creds);
return new Proxy(lnd, {
get(target, key) {
const method = target[key];
if (typeof method === 'function' && !key.startsWith('sub')) return promisify(method);
return target[key];
},
});
}
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