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Merge Lightning backend into Mempool backend

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This commit is contained in:
nymkappa
2022-07-06 11:58:06 +02:00
committed by softsimon
parent faafa6db3b
commit a238420d7f
47 changed files with 298 additions and 5424 deletions
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1
backend/src/api/bitcoin/bitcoin-api-abstract-factory.ts
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@@ -13,6 +13,7 @@ export interface AbstractBitcoinApi {
$getAddressTransactions(address: string, lastSeenTxId: string): Promise<IEsploraApi.Transaction[]>;
$getAddressPrefix(prefix: string): string[];
$sendRawTransaction(rawTransaction: string): Promise<string>;
$getOutspend(txId: string, vout: number): Promise<IEsploraApi.Outspend>;
$getOutspends(txId: string): Promise<IEsploraApi.Outspend[]>;
$getBatchedOutspends(txId: string[]): Promise<IEsploraApi.Outspend[][]>;
}

14
backend/src/api/bitcoin/bitcoin-api.ts
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@@ -130,6 +130,16 @@ class BitcoinApi implements AbstractBitcoinApi {
return this.bitcoindClient.sendRawTransaction(rawTransaction);
}
async $getOutspend(txId: string, vout: number): Promise<IEsploraApi.Outspend> {
const txOut = await this.bitcoindClient.getTxOut(txId, vout, false);
return {
spent: txOut === null,
status: {
confirmed: true,
}
};
}
async $getOutspends(txId: string): Promise<IEsploraApi.Outspend[]> {
const outSpends: IEsploraApi.Outspend[] = [];
const tx = await this.$getRawTransaction(txId, true, false);
@@ -195,7 +205,9 @@ class BitcoinApi implements AbstractBitcoinApi {
sequence: vin.sequence,
txid: vin.txid || '',
vout: vin.vout || 0,
witness: vin.txinwitness,
witness: vin.txinwitness || [],
inner_redeemscript_asm: '',
inner_witnessscript_asm: '',
};
});

6
backend/src/api/bitcoin/esplora-api.interface.ts
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@@ -25,10 +25,10 @@ export namespace IEsploraApi {
is_coinbase: boolean;
scriptsig: string;
scriptsig_asm: string;
inner_redeemscript_asm?: string;
inner_witnessscript_asm?: string;
inner_redeemscript_asm: string;
inner_witnessscript_asm: string;
sequence: any;
witness?: string[];
witness: string[];
prevout: Vout | null;
// Elements
is_pegin?: boolean;

5
backend/src/api/bitcoin/esplora-api.ts
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@@ -66,6 +66,11 @@ class ElectrsApi implements AbstractBitcoinApi {
throw new Error('Method not implemented.');
}
$getOutspend(txId: string, vout: number): Promise<IEsploraApi.Outspend> {
return axios.get<IEsploraApi.Outspend>(config.ESPLORA.REST_API_URL + '/tx/' + txId + '/outspend/' + vout, this.axiosConfig)
.then((response) => response.data);
}
$getOutspends(txId: string): Promise<IEsploraApi.Outspend[]> {
return axios.get<IEsploraApi.Outspend[]>(config.ESPLORA.REST_API_URL + '/tx/' + txId + '/outspends', this.axiosConfig)
.then((response) => response.data);

87
backend/src/api/database-migration.ts
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@@ -4,7 +4,7 @@ import logger from '../logger';
import { Common } from './common';
class DatabaseMigration {
private static currentVersion = 24;
private static currentVersion = 25;
private queryTimeout = 120000;
private statisticsAddedIndexed = false;
private uniqueLogs: string[] = [];
@@ -248,6 +248,15 @@ class DatabaseMigration {
await this.$executeQuery('DROP TABLE IF EXISTS `blocks_audits`');
await this.$executeQuery(this.getCreateBlocksAuditsTableQuery(), await this.$checkIfTableExists('blocks_audits'));
}
if (databaseSchemaVersion < 25 && isBitcoin === true) {
await this.$executeQuery(`INSERT INTO state VALUES('last_node_stats', 0, '1970-01-01');`);
await this.$executeQuery(this.getCreateLightningStatisticsQuery(), await this.$checkIfTableExists('lightning_stats'));
await this.$executeQuery(this.getCreateNodesQuery(), await this.$checkIfTableExists('nodes'));
await this.$executeQuery(this.getCreateChannelsQuery(), await this.$checkIfTableExists('channels'));
await this.$executeQuery(this.getCreateNodesStatsQuery(), await this.$checkIfTableExists('node_stats'));
}
} catch (e) {
throw e;
}
@@ -569,6 +578,82 @@ class DatabaseMigration {
adjustment float NOT NULL,
PRIMARY KEY (height),
INDEX (time)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;`;
}
private getCreateLightningStatisticsQuery(): string {
return `CREATE TABLE IF NOT EXISTS lightning_stats (
id int(11) NOT NULL AUTO_INCREMENT,
added datetime NOT NULL,
channel_count int(11) NOT NULL,
node_count int(11) NOT NULL,
total_capacity double unsigned NOT NULL,
PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;`;
}
private getCreateNodesQuery(): string {
return `CREATE TABLE IF NOT EXISTS nodes (
public_key varchar(66) NOT NULL,
first_seen datetime NOT NULL,
updated_at datetime NOT NULL,
alias varchar(200) CHARACTER SET utf8mb4 NOT NULL,
color varchar(200) NOT NULL,
sockets text DEFAULT NULL,
PRIMARY KEY (public_key),
KEY alias (alias(10))
) ENGINE=InnoDB DEFAULT CHARSET=utf8;`;
}
private getCreateChannelsQuery(): string {
return `CREATE TABLE IF NOT EXISTS channels (
id bigint(11) unsigned NOT NULL,
short_id varchar(15) NOT NULL DEFAULT '',
capacity bigint(20) unsigned NOT NULL,
transaction_id varchar(64) NOT NULL,
transaction_vout int(11) NOT NULL,
updated_at datetime DEFAULT NULL,
created datetime DEFAULT NULL,
status int(11) NOT NULL DEFAULT 0,
closing_transaction_id varchar(64) DEFAULT NULL,
closing_date datetime DEFAULT NULL,
closing_reason int(11) DEFAULT NULL,
node1_public_key varchar(66) NOT NULL,
node1_base_fee_mtokens bigint(20) unsigned DEFAULT NULL,
node1_cltv_delta int(11) DEFAULT NULL,
node1_fee_rate bigint(11) DEFAULT NULL,
node1_is_disabled tinyint(1) DEFAULT NULL,
node1_max_htlc_mtokens bigint(20) unsigned DEFAULT NULL,
node1_min_htlc_mtokens bigint(20) DEFAULT NULL,
node1_updated_at datetime DEFAULT NULL,
node2_public_key varchar(66) NOT NULL,
node2_base_fee_mtokens bigint(20) unsigned DEFAULT NULL,
node2_cltv_delta int(11) DEFAULT NULL,
node2_fee_rate bigint(11) DEFAULT NULL,
node2_is_disabled tinyint(1) DEFAULT NULL,
node2_max_htlc_mtokens bigint(20) unsigned DEFAULT NULL,
node2_min_htlc_mtokens bigint(20) unsigned DEFAULT NULL,
node2_updated_at datetime DEFAULT NULL,
PRIMARY KEY (id),
KEY node1_public_key (node1_public_key),
KEY node2_public_key (node2_public_key),
KEY status (status),
KEY short_id (short_id),
KEY transaction_id (transaction_id),
KEY closing_transaction_id (closing_transaction_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;`;
}
private getCreateNodesStatsQuery(): string {
return `CREATE TABLE IF NOT EXISTS node_stats (
id int(11) unsigned NOT NULL AUTO_INCREMENT,
public_key varchar(66) NOT NULL DEFAULT '',
added date NOT NULL,
capacity bigint(20) unsigned NOT NULL DEFAULT 0,
channels int(11) unsigned NOT NULL DEFAULT 0,
PRIMARY KEY (id),
UNIQUE KEY added (added,public_key),
KEY public_key (public_key)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;`;
}

164
backend/src/api/explorer/channels.api.ts Normal file
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@@ -0,0 +1,164 @@
import logger from '../../logger';
import DB from '../../database';
class ChannelsApi {
public async $getAllChannels(): Promise<any[]> {
try {
const query = `SELECT * FROM channels`;
const [rows]: any = await DB.query(query);
return rows;
} catch (e) {
logger.err('$getAllChannels error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
public async $searchChannelsById(search: string): Promise<any[]> {
try {
const searchStripped = search.replace('%', '') + '%';
const query = `SELECT id, short_id, capacity FROM channels WHERE id LIKE ? OR short_id LIKE ? LIMIT 10`;
const [rows]: any = await DB.query(query, [searchStripped, searchStripped]);
return rows;
} catch (e) {
logger.err('$searchChannelsById error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
public async $getChannelsByStatus(status: number): Promise<any[]> {
try {
const query = `SELECT * FROM channels WHERE status = ?`;
const [rows]: any = await DB.query(query, [status]);
return rows;
} catch (e) {
logger.err('$getChannelsByStatus error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
public async $getClosedChannelsWithoutReason(): Promise<any[]> {
try {
const query = `SELECT * FROM channels WHERE status = 2 AND closing_reason IS NULL AND closing_transaction_id != ''`;
const [rows]: any = await DB.query(query);
return rows;
} catch (e) {
logger.err('$getClosedChannelsWithoutReason error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
public async $getChannelsWithoutCreatedDate(): Promise<any[]> {
try {
const query = `SELECT * FROM channels WHERE created IS NULL`;
const [rows]: any = await DB.query(query);
return rows;
} catch (e) {
logger.err('$getChannelsWithoutCreatedDate error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
public async $getChannel(id: string): Promise<any> {
try {
const query = `SELECT n1.alias AS alias_left, n2.alias AS alias_right, channels.*, ns1.channels AS channels_left, ns1.capacity AS capacity_left, ns2.channels AS channels_right, ns2.capacity AS capacity_right FROM channels LEFT JOIN nodes AS n1 ON n1.public_key = channels.node1_public_key LEFT JOIN nodes AS n2 ON n2.public_key = channels.node2_public_key LEFT JOIN node_stats AS ns1 ON ns1.public_key = channels.node1_public_key LEFT JOIN node_stats AS ns2 ON ns2.public_key = channels.node2_public_key WHERE (ns1.id = (SELECT MAX(id) FROM node_stats WHERE public_key = channels.node1_public_key) AND ns2.id = (SELECT MAX(id) FROM node_stats WHERE public_key = channels.node2_public_key)) AND channels.id = ?`;
const [rows]: any = await DB.query(query, [id]);
if (rows[0]) {
return this.convertChannel(rows[0]);
}
} catch (e) {
logger.err('$getChannel error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
public async $getChannelsByTransactionId(transactionIds: string[]): Promise<any[]> {
try {
transactionIds = transactionIds.map((id) => '\'' + id + '\'');
const query = `SELECT n1.alias AS alias_left, n2.alias AS alias_right, channels.* FROM channels LEFT JOIN nodes AS n1 ON n1.public_key = channels.node1_public_key LEFT JOIN nodes AS n2 ON n2.public_key = channels.node2_public_key WHERE channels.transaction_id IN (${transactionIds.join(', ')}) OR channels.closing_transaction_id IN (${transactionIds.join(', ')})`;
const [rows]: any = await DB.query(query);
const channels = rows.map((row) => this.convertChannel(row));
return channels;
} catch (e) {
logger.err('$getChannelByTransactionId error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
public async $getChannelsForNode(public_key: string, index: number, length: number, status: string): Promise<any[]> {
try {
// Default active and inactive channels
let statusQuery = '< 2';
// Closed channels only
if (status === 'closed') {
statusQuery = '= 2';
}
const query = `SELECT n1.alias AS alias_left, n2.alias AS alias_right, channels.*, ns1.channels AS channels_left, ns1.capacity AS capacity_left, ns2.channels AS channels_right, ns2.capacity AS capacity_right FROM channels LEFT JOIN nodes AS n1 ON n1.public_key = channels.node1_public_key LEFT JOIN nodes AS n2 ON n2.public_key = channels.node2_public_key LEFT JOIN node_stats AS ns1 ON ns1.public_key = channels.node1_public_key LEFT JOIN node_stats AS ns2 ON ns2.public_key = channels.node2_public_key WHERE (ns1.id = (SELECT MAX(id) FROM node_stats WHERE public_key = channels.node1_public_key) AND ns2.id = (SELECT MAX(id) FROM node_stats WHERE public_key = channels.node2_public_key)) AND (node1_public_key = ? OR node2_public_key = ?) AND status ${statusQuery} ORDER BY channels.capacity DESC LIMIT ?, ?`;
const [rows]: any = await DB.query(query, [public_key, public_key, index, length]);
const channels = rows.map((row) => this.convertChannel(row));
return channels;
} catch (e) {
logger.err('$getChannelsForNode error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
public async $getChannelsCountForNode(public_key: string, status: string): Promise<any> {
try {
// Default active and inactive channels
let statusQuery = '< 2';
// Closed channels only
if (status === 'closed') {
statusQuery = '= 2';
}
const query = `SELECT COUNT(*) AS count FROM channels WHERE (node1_public_key = ? OR node2_public_key = ?) AND status ${statusQuery}`;
const [rows]: any = await DB.query(query, [public_key, public_key]);
return rows[0]['count'];
} catch (e) {
logger.err('$getChannelsForNode error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
private convertChannel(channel: any): any {
return {
'id': channel.id,
'short_id': channel.short_id,
'capacity': channel.capacity,
'transaction_id': channel.transaction_id,
'transaction_vout': channel.transaction_vout,
'closing_transaction_id': channel.closing_transaction_id,
'closing_reason': channel.closing_reason,
'updated_at': channel.updated_at,
'created': channel.created,
'status': channel.status,
'node_left': {
'alias': channel.alias_left,
'public_key': channel.node1_public_key,
'channels': channel.channels_left,
'capacity': channel.capacity_left,
'base_fee_mtokens': channel.node1_base_fee_mtokens,
'cltv_delta': channel.node1_cltv_delta,
'fee_rate': channel.node1_fee_rate,
'is_disabled': channel.node1_is_disabled,
'max_htlc_mtokens': channel.node1_max_htlc_mtokens,
'min_htlc_mtokens': channel.node1_min_htlc_mtokens,
'updated_at': channel.node1_updated_at,
},
'node_right': {
'alias': channel.alias_right,
'public_key': channel.node2_public_key,
'channels': channel.channels_right,
'capacity': channel.capacity_right,
'base_fee_mtokens': channel.node2_base_fee_mtokens,
'cltv_delta': channel.node2_cltv_delta,
'fee_rate': channel.node2_fee_rate,
'is_disabled': channel.node2_is_disabled,
'max_htlc_mtokens': channel.node2_max_htlc_mtokens,
'min_htlc_mtokens': channel.node2_min_htlc_mtokens,
'updated_at': channel.node2_updated_at,
},
};
}
}
export default new ChannelsApi();

98
backend/src/api/explorer/channels.routes.ts Normal file
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@@ -0,0 +1,98 @@
import config from '../../config';
import { Application, Request, Response } from 'express';
import channelsApi from './channels.api';
class ChannelsRoutes {
constructor() { }
public initRoutes(app: Application) {
app
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels/txids', this.$getChannelsByTransactionIds)
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels/search/:search', this.$searchChannelsById)
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels/:short_id', this.$getChannel)
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels', this.$getChannelsForNode)
;
}
private async $searchChannelsById(req: Request, res: Response) {
try {
const channels = await channelsApi.$searchChannelsById(req.params.search);
res.json(channels);
} catch (e) {
res.status(500).send(e instanceof Error ? e.message : e);
}
}
private async $getChannel(req: Request, res: Response) {
try {
const channel = await channelsApi.$getChannel(req.params.short_id);
if (!channel) {
res.status(404).send('Channel not found');
return;
}
res.json(channel);
} catch (e) {
res.status(500).send(e instanceof Error ? e.message : e);
}
}
private async $getChannelsForNode(req: Request, res: Response) {
try {
if (typeof req.query.public_key !== 'string') {
res.status(501).send('Missing parameter: public_key');
return;
}
const index = parseInt(typeof req.query.index === 'string' ? req.query.index : '0', 10) || 0;
const status: string = typeof req.query.status === 'string' ? req.query.status : '';
const length = 25;
const channels = await channelsApi.$getChannelsForNode(req.query.public_key, index, length, status);
const channelsCount = await channelsApi.$getChannelsCountForNode(req.query.public_key, status);
res.header('X-Total-Count', channelsCount.toString());
res.json(channels);
} catch (e) {
res.status(500).send(e instanceof Error ? e.message : e);
}
}
private async $getChannelsByTransactionIds(req: Request, res: Response) {
try {
if (!Array.isArray(req.query.txId)) {
res.status(500).send('Not an array');
return;
}
const txIds: string[] = [];
for (const _txId in req.query.txId) {
if (typeof req.query.txId[_txId] === 'string') {
txIds.push(req.query.txId[_txId].toString());
}
}
const channels = await channelsApi.$getChannelsByTransactionId(txIds);
const inputs: any[] = [];
const outputs: any[] = [];
for (const txid of txIds) {
const foundChannelInputs = channels.find((channel) => channel.closing_transaction_id === txid);
if (foundChannelInputs) {
inputs.push(foundChannelInputs);
} else {
inputs.push(null);
}
const foundChannelOutputs = channels.find((channel) => channel.transaction_id === txid);
if (foundChannelOutputs) {
outputs.push(foundChannelOutputs);
} else {
outputs.push(null);
}
}
res.json({
inputs: inputs,
outputs: outputs,
});
} catch (e) {
res.status(500).send(e instanceof Error ? e.message : e);
}
}
}
export default new ChannelsRoutes();

53
backend/src/api/explorer/general.routes.ts Normal file
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@@ -0,0 +1,53 @@
import config from '../../config';
import { Application, Request, Response } from 'express';
import nodesApi from './nodes.api';
import channelsApi from './channels.api';
import statisticsApi from './statistics.api';
class GeneralLightningRoutes {
constructor() { }
public initRoutes(app: Application) {
app
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/search', this.$searchNodesAndChannels)
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/statistics/latest', this.$getGeneralStats)
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/statistics', this.$getStatistics)
;
}
private async $searchNodesAndChannels(req: Request, res: Response) {
if (typeof req.query.searchText !== 'string') {
res.status(501).send('Missing parameter: searchText');
return;
}
try {
const nodes = await nodesApi.$searchNodeByPublicKeyOrAlias(req.query.searchText);
const channels = await channelsApi.$searchChannelsById(req.query.searchText);
res.json({
nodes: nodes,
channels: channels,
});
} catch (e) {
res.status(500).send(e instanceof Error ? e.message : e);
}
}
private async $getStatistics(req: Request, res: Response) {
try {
const statistics = await statisticsApi.$getStatistics();
res.json(statistics);
} catch (e) {
res.status(500).send(e instanceof Error ? e.message : e);
}
}
private async $getGeneralStats(req: Request, res: Response) {
try {
const statistics = await statisticsApi.$getLatestStatistics();
res.json(statistics);
} catch (e) {
res.status(500).send(e instanceof Error ? e.message : e);
}
}
}
export default new GeneralLightningRoutes();

62
backend/src/api/explorer/nodes.api.ts Normal file
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@@ -0,0 +1,62 @@
import logger from '../../logger';
import DB from '../../database';
class NodesApi {
public async $getNode(public_key: string): Promise<any> {
try {
const query = `SELECT nodes.*, (SELECT COUNT(*) FROM channels WHERE channels.status < 2 AND (channels.node1_public_key = ? OR channels.node2_public_key = ?)) AS channel_count, (SELECT SUM(capacity) FROM channels WHERE channels.status < 2 AND (channels.node1_public_key = ? OR channels.node2_public_key = ?)) AS capacity, (SELECT AVG(capacity) FROM channels WHERE status < 2 AND (node1_public_key = ? OR node2_public_key = ?)) AS channels_capacity_avg FROM nodes WHERE public_key = ?`;
const [rows]: any = await DB.query(query, [public_key, public_key, public_key, public_key, public_key, public_key, public_key]);
return rows[0];
} catch (e) {
logger.err('$getNode error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
public async $getNodeStats(public_key: string): Promise<any> {
try {
const query = `SELECT UNIX_TIMESTAMP(added) AS added, capacity, channels FROM node_stats WHERE public_key = ? ORDER BY added DESC`;
const [rows]: any = await DB.query(query, [public_key]);
return rows;
} catch (e) {
logger.err('$getNodeStats error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
public async $getTopCapacityNodes(): Promise<any> {
try {
const query = `SELECT nodes.*, node_stats.capacity, node_stats.channels FROM nodes LEFT JOIN node_stats ON node_stats.public_key = nodes.public_key ORDER BY node_stats.added DESC, node_stats.capacity DESC LIMIT 10`;
const [rows]: any = await DB.query(query);
return rows;
} catch (e) {
logger.err('$getTopCapacityNodes error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
public async $getTopChannelsNodes(): Promise<any> {
try {
const query = `SELECT nodes.*, node_stats.capacity, node_stats.channels FROM nodes LEFT JOIN node_stats ON node_stats.public_key = nodes.public_key ORDER BY node_stats.added DESC, node_stats.channels DESC LIMIT 10`;
const [rows]: any = await DB.query(query);
return rows;
} catch (e) {
logger.err('$getTopChannelsNodes error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
public async $searchNodeByPublicKeyOrAlias(search: string) {
try {
const searchStripped = search.replace('%', '') + '%';
const query = `SELECT nodes.public_key, nodes.alias, node_stats.capacity FROM nodes LEFT JOIN node_stats ON node_stats.public_key = nodes.public_key WHERE nodes.public_key LIKE ? OR nodes.alias LIKE ? GROUP BY nodes.public_key ORDER BY node_stats.capacity DESC LIMIT 10`;
const [rows]: any = await DB.query(query, [searchStripped, searchStripped]);
return rows;
} catch (e) {
logger.err('$searchNodeByPublicKeyOrAlias error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
}
export default new NodesApi();

61
backend/src/api/explorer/nodes.routes.ts Normal file
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@@ -0,0 +1,61 @@
import config from '../../config';
import { Application, Request, Response } from 'express';
import nodesApi from './nodes.api';
class NodesRoutes {
constructor() { }
public initRoutes(app: Application) {
app
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/search/:search', this.$searchNode)
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/top', this.$getTopNodes)
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/:public_key/statistics', this.$getHistoricalNodeStats)
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/:public_key', this.$getNode)
;
}
private async $searchNode(req: Request, res: Response) {
try {
const nodes = await nodesApi.$searchNodeByPublicKeyOrAlias(req.params.search);
res.json(nodes);
} catch (e) {
res.status(500).send(e instanceof Error ? e.message : e);
}
}
private async $getNode(req: Request, res: Response) {
try {
const node = await nodesApi.$getNode(req.params.public_key);
if (!node) {
res.status(404).send('Node not found');
return;
}
res.json(node);
} catch (e) {
res.status(500).send(e instanceof Error ? e.message : e);
}
}
private async $getHistoricalNodeStats(req: Request, res: Response) {
try {
const statistics = await nodesApi.$getNodeStats(req.params.public_key);
res.json(statistics);
} catch (e) {
res.status(500).send(e instanceof Error ? e.message : e);
}
}
private async $getTopNodes(req: Request, res: Response) {
try {
const topCapacityNodes = await nodesApi.$getTopCapacityNodes();
const topChannelsNodes = await nodesApi.$getTopChannelsNodes();
res.json({
topByCapacity: topCapacityNodes,
topByChannels: topChannelsNodes,
});
} catch (e) {
res.status(500).send(e instanceof Error ? e.message : e);
}
}
}
export default new NodesRoutes();

32
backend/src/api/explorer/statistics.api.ts Normal file
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@@ -0,0 +1,32 @@
import logger from '../../logger';
import DB from '../../database';
class StatisticsApi {
public async $getStatistics(): Promise<any> {
try {
const query = `SELECT UNIX_TIMESTAMP(added) AS added, channel_count, node_count, total_capacity FROM lightning_stats ORDER BY id DESC`;
const [rows]: any = await DB.query(query);
return rows;
} catch (e) {
logger.err('$getStatistics error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
public async $getLatestStatistics(): Promise<any> {
try {
const [rows]: any = await DB.query(`SELECT * FROM lightning_stats ORDER BY id DESC LIMIT 1`);
const [rows2]: any = await DB.query(`SELECT * FROM lightning_stats ORDER BY id DESC LIMIT 1 OFFSET 72`);
return {
latest: rows[0],
previous: rows2[0],
};
} catch (e) {
logger.err('$getLatestStatistics error: ' + (e instanceof Error ? e.message : e));
throw e;
}
}
}
export default new StatisticsApi();

7
backend/src/api/lightning/lightning-api-abstract-factory.ts Normal file
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import { ILightningApi } from './lightning-api.interface';
export interface AbstractLightningApi {
$getNetworkInfo(): Promise<ILightningApi.NetworkInfo>;
$getNetworkGraph(): Promise<ILightningApi.NetworkGraph>;
$getChanInfo(id: string): Promise<ILightningApi.Channel>;
}

13
backend/src/api/lightning/lightning-api-factory.ts Normal file
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import config from '../../config';
import { AbstractLightningApi } from './lightning-api-abstract-factory';
import LndApi from './lnd/lnd-api';
function lightningApiFactory(): AbstractLightningApi {
switch (config.LIGHTNING.BACKEND) {
case 'lnd':
default:
return new LndApi();
}
}
export default lightningApiFactory();

53
backend/src/api/lightning/lightning-api.interface.ts Normal file
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export namespace ILightningApi {
export interface NetworkInfo {
average_channel_size: number;
channel_count: number;
max_channel_size: number;
median_channel_size: number;
min_channel_size: number;
node_count: number;
not_recently_updated_policy_count: number;
total_capacity: number;
}
export interface NetworkGraph {
channels: Channel[];
nodes: Node[];
}
export interface Channel {
id: string;
capacity: number;
policies: Policy[];
transaction_id: string;
transaction_vout: number;
updated_at: string;
}
interface Policy {
public_key: string;
base_fee_mtokens?: number;
cltv_delta?: number;
fee_rate?: number;
is_disabled?: boolean;
max_htlc_mtokens?: number;
min_htlc_mtokens?: number;
updated_at?: string;
}
export interface Node {
alias: string;
color: string;
features: Feature[];
public_key: string;
sockets: string[];
updated_at: string;
}
interface Feature {
bit: number;
is_known: boolean;
is_required: boolean;
type: string;
}
}

44
backend/src/api/lightning/lnd/lnd-api.ts Normal file
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import { AbstractLightningApi } from '../lightning-api-abstract-factory';
import { ILightningApi } from '../lightning-api.interface';
import * as fs from 'fs';
import * as lnService from 'ln-service';
import config from '../../../config';
import logger from '../../../logger';
class LndApi implements AbstractLightningApi {
private lnd: any;
constructor() {
if (!config.LIGHTNING.ENABLED) {
return;
}
try {
const tls = fs.readFileSync(config.LND_NODE_AUTH.TLS_CERT_PATH).toString('base64');
const macaroon = fs.readFileSync(config.LND_NODE_AUTH.MACAROON_PATH).toString('base64');
const { lnd } = lnService.authenticatedLndGrpc({
cert: tls,
macaroon: macaroon,
socket: config.LND_NODE_AUTH.SOCKET,
});
this.lnd = lnd;
} catch (e) {
logger.err('Could not initiate the LND service handler: ' + (e instanceof Error ? e.message : e));
process.exit(1);
}
}
async $getNetworkInfo(): Promise<ILightningApi.NetworkInfo> {
return await lnService.getNetworkInfo({ lnd: this.lnd });
}
async $getNetworkGraph(): Promise<ILightningApi.NetworkGraph> {
return await lnService.getNetworkGraph({ lnd: this.lnd });
}
async $getChanInfo(id: string): Promise<ILightningApi.Channel> {
return await lnService.getChannel({ lnd: this.lnd, id });
}
}
export default LndApi;