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API method for node fee histogram data

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Mononaut 2022-10-15 00:45:48 +00:00
parent 7bdde13b40
commit f4df51dd21
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3 changed files with 71 additions and 0 deletions
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50
backend/src/api/explorer/nodes.api.ts
View File

@ -129,6 +129,56 @@ class NodesApi {
}
}
public async $getFeeHistogram(node_public_key: string): Promise<unknown> {
try {
const inQuery = `
SELECT CASE WHEN fee_rate <= 10.0 THEN CEIL(fee_rate)
WHEN (fee_rate > 10.0 and fee_rate <= 100.0) THEN CEIL(fee_rate / 10.0) * 10.0
WHEN (fee_rate > 100.0 and fee_rate <= 1000.0) THEN CEIL(fee_rate / 100.0) * 100.0
WHEN fee_rate > 1000.0 THEN CEIL(fee_rate / 1000.0) * 1000.0
END as bucket,
count(short_id) as count,
sum(capacity) as capacity
FROM (
SELECT CASE WHEN node1_public_key = ? THEN node2_fee_rate WHEN node2_public_key = ? THEN node1_fee_rate END as fee_rate,
short_id as short_id,
capacity as capacity
FROM channels
WHERE status = 1 AND (channels.node1_public_key = ? OR channels.node2_public_key = ?)
) as fee_rate_table
GROUP BY bucket;
`;
const [inRows]: any[] = await DB.query(inQuery, [node_public_key, node_public_key, node_public_key, node_public_key]);
const outQuery = `
SELECT CASE WHEN fee_rate <= 10.0 THEN CEIL(fee_rate)
WHEN (fee_rate > 10.0 and fee_rate <= 100.0) THEN CEIL(fee_rate / 10.0) * 10.0
WHEN (fee_rate > 100.0 and fee_rate <= 1000.0) THEN CEIL(fee_rate / 100.0) * 100.0
WHEN fee_rate > 1000.0 THEN CEIL(fee_rate / 1000.0) * 1000.0
END as bucket,
count(short_id) as count,
sum(capacity) as capacity
FROM (
SELECT CASE WHEN node1_public_key = ? THEN node1_fee_rate WHEN node2_public_key = ? THEN node2_fee_rate END as fee_rate,
short_id as short_id,
capacity as capacity
FROM channels
WHERE status = 1 AND (channels.node1_public_key = ? OR channels.node2_public_key = ?)
) as fee_rate_table
GROUP BY bucket;
`;
const [outRows]: any[] = await DB.query(outQuery, [node_public_key, node_public_key, node_public_key, node_public_key]);
return {
incoming: inRows.length > 0 ? inRows : [],
outgoing: outRows.length > 0 ? outRows : [],
};
} catch (e) {
logger.err(`Cannot get node fee distribution for ${node_public_key}. Reason: ${(e instanceof Error ? e.message : e)}`);
throw e;
}
}
public async $getAllNodes(): Promise<any> {
try {
const query = `SELECT * FROM nodes`;

17
backend/src/api/explorer/nodes.routes.ts
View File

@ -20,6 +20,7 @@ class NodesRoutes {
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/rankings/connectivity', this.$getTopNodesByChannels)
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/rankings/age', this.$getOldestNodes)
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/:public_key/statistics', this.$getHistoricalNodeStats)
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/:public_key/fees/histogram', this.$getFeeHistogram)
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/:public_key', this.$getNode)
.get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/group/:name', this.$getNodeGroup)
;
@ -95,6 +96,22 @@ class NodesRoutes {
}
}
private async $getFeeHistogram(req: Request, res: Response) {
try {
const node = await nodesApi.$getFeeHistogram(req.params.public_key);
if (!node) {
res.status(404).send('Node not found');
return;
}
res.header('Pragma', 'public');
res.header('Cache-control', 'public');
res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
res.json(node);
} catch (e) {
res.status(500).send(e instanceof Error ? e.message : e);
}
}
private async $getNodesRanking(req: Request, res: Response): Promise<void> {
try {
const topCapacityNodes = await nodesApi.$getTopCapacityNodes(false);

4
frontend/src/app/lightning/lightning-api.service.ts
View File

@ -53,6 +53,10 @@ export class LightningApiService {
return this.httpClient.get<any>(this.apiBasePath + '/api/v1/lightning/nodes/' + publicKey + '/statistics');
}
getNodeFeeHistogram$(publicKey: string): Observable<any> {
return this.httpClient.get<any>(this.apiBasePath + '/api/v1/lightning/nodes/' + publicKey + '/fees/histogram');
}
getNodesRanking$(): Observable<INodesRanking> {
return this.httpClient.get<INodesRanking>(this.apiBasePath + '/api/v1/lightning/nodes/rankings');
}