var request = require("request-promise"); var common = require('../../common'); var logger = require('../logger'); var options = {}; getAliasFromPubkey = (hop) => { return new Promise(function(resolve, reject) { options.url = common.getSelLNServerUrl() + '/graph/node/' + hop.pub_key; request(options) .then(function(aliasBody) { logger.info({fileName: 'Graph', msg: 'Alias: ' + JSON.stringify(aliasBody.node.alias)}); hop.pubkey_alias = aliasBody.node.alias; resolve(hop); }) .catch(err => resolve('')); }); } exports.getDescribeGraph = (req, res, next) => { options = common.getOptions(); options.url = common.getSelLNServerUrl() + '/graph'; request.get(options).then((body) => { const body_str = (undefined === body) ? '' : JSON.stringify(body); const search_idx = (undefined === body) ? -1 : body_str.search('Not Found'); logger.info({fileName: 'Graph', msg: 'Describe Graph Received: ' + body_str}); if(undefined === body || search_idx > -1 || body.error) { res.status(500).json({ message: "Fetching Describe Graph Failed!", error: (undefined === body || search_idx > -1) ? 'Error From Server!' : body.error }); } else { res.status(200).json(body); } }) .catch((err) => { return res.status(500).json({ message: "Fetching Describe Graph Failed!", error: err.error }); }); }; exports.getGraphInfo = (req, res, next) => { options = common.getOptions(); options.url = common.getSelLNServerUrl() + '/graph/info'; request.get(options).then((body) => { const body_str = (undefined === body) ? '' : JSON.stringify(body); const search_idx = (undefined === body) ? -1 : body_str.search('Not Found'); logger.info({fileName: 'Graph', msg: 'Network Info Received: ' + body_str}); if(undefined === body || search_idx > -1 || body.error) { res.status(500).json({ message: "Fetching network Info failed!", error: (undefined === body || search_idx > -1) ? 'Error From Server!' : body.error }); } else { body.btc_total_network_capacity = (undefined === body.total_network_capacity) ? 0 : common.convertToBTC(body.total_network_capacity); body.btc_avg_channel_size = (undefined === body.avg_channel_size) ? 0 : common.convertToBTC(body.avg_channel_size); body.btc_min_channel_size = (undefined === body.min_channel_size) ? 0 : common.convertToBTC(body.min_channel_size); body.btc_max_channel_size = (undefined === body.max_channel_size) ? 0 : common.convertToBTC(body.max_channel_size); logger.info({fileName: 'Graph', msg: 'Network Information After Rounding and Conversion: ' + body_str}); res.status(200).json(body); } }) .catch((err) => { return res.status(500).json({ message: "Fetching network Info failed!", error: err.error }); }); }; exports.getGraphNode = (req, res, next) => { options = common.getOptions(); options.url = common.getSelLNServerUrl() + '/graph/node/' + req.params.pubKey; request(options).then((body) => { logger.info({fileName: 'Graph', msg: 'Node Info Received: ' + JSON.stringify(body)}); if(undefined === body || body.error) { res.status(500).json({ message: "Fetching node Info failed!", error: (undefined === body) ? 'Error From Server!' : body.error }); } if (undefined !== body) { body.node.last_update_str = (undefined === body.node.last_update) ? '' : common.convertTimestampToDate(body.node.last_update); } res.status(200).json(body); }) .catch((err) => { return res.status(500).json({ message: "Fetching node Info failed!", error: err.error }); }); }; exports.getGraphEdge = (req, res, next) => { options = common.getOptions(); options.url = common.getSelLNServerUrl() + '/graph/edge/' + req.params.chanid; request(options).then((body) => { logger.info({fileName: 'Graph', msg: 'Edge Info Received: ' + JSON.stringify(body)}); if(undefined === body || body.error) { res.status(500).json({ message: "Fetching Edge Info Failed!", error: (undefined === body) ? 'Error From Server!' : body.error }); } if (undefined !== body) { body.last_update_str = (undefined === body.last_update) ? '' : common.convertTimestampToDate(body.last_update); } res.status(200).json(body); }) .catch((err) => { return res.status(500).json({ message: "Fetching Edge Info Failed!", error: err.error }); }); }; exports.getQueryRoutes = (req, res, next) => { options = common.getOptions(); options.url = common.getSelLNServerUrl() + '/graph/routes/' + req.params.destPubkey + '/' + req.params.amount; request(options).then((body) => { logger.info({fileName: 'Graph', msg: 'Query Routes Received: ' + JSON.stringify(body)}); if(undefined === body || body.error) { res.status(500).json({ message: "Fetching Query Routes Failed!", error: (undefined === body) ? 'Error From Server!' : body.error }); } if (undefined !== body.routes && body.routes.length > 0) { body.routes.forEach(route => { if (undefined !== route.hops) { Promise.all( route.hops.map((hop, i) => { hop.hop_sequence = i + 1; return getAliasFromPubkey(hop); }) ) .then(function(values) { logger.info({fileName: 'Graph', msg: 'Hops with Alias: ' + JSON.stringify(body)}); res.status(200).json(body); }).catch(err => { return res.status(500).json({ message: "Fetching Query Routes Failed!", error: err.error }); }); } }); } }) .catch((err) => { return res.status(500).json({ message: "Fetching Query Routes Failed!", error: err.error }); }); }; exports.getRemoteFeePolicy = (req, res, next) => { options = common.getOptions(); options.url = common.getSelLNServerUrl() + '/graph/edge/' + req.params.chanid; request(options).then((body) => { logger.info({fileName: 'Graph', msg: 'Edge Info Received: ' + JSON.stringify(body)}); if(undefined === body || body.error) { res.status(500).json({ message: "Fetching Edge Info Failed!", error: (undefined === body) ? 'Error From Server!' : body.error }); } if (undefined !== body) { body.last_update_str = (undefined === body.last_update) ? '' : common.convertTimestampToDate(body.last_update); } remoteNodeFee = {}; if(body.node1_pub === req.params.localPubkey){ remoteNodeFee = { time_lock_delta: body.node2_policy.time_lock_delta, fee_base_msat: body.node2_policy.fee_base_msat, fee_rate_milli_msat: body.node2_policy.fee_rate_milli_msat }; } else if(body.node2_pub === req.params.localPubkey) { remoteNodeFee = { time_lock_delta: body.node1_policy.time_lock_delta, fee_base_msat: body.node1_policy.fee_base_msat, fee_rate_milli_msat: body.node1_policy.fee_rate_milli_msat }; } res.status(200).json(remoteNodeFee); }) .catch((err) => { return res.status(500).json({ message: "Fetching Edge Info Failed!", error: err.error }); }); };