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Reuse HTTP connections to esplora backend

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Mononaut 2023-02-07 20:56:33 -06:00 committed by softsimon
parent 65875c3ced
commit 7f54e30a26
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2 changed files with 22 additions and 14 deletions
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29
backend/src/api/bitcoin/esplora-api.ts
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@ -1,8 +1,13 @@
import config from '../../config'; import config from '../../config';
import axios, { AxiosRequestConfig } from 'axios'; import axios, { AxiosRequestConfig } from 'axios';
import http from 'http';
import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory'; import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory';
import { IEsploraApi } from './esplora-api.interface'; import { IEsploraApi } from './esplora-api.interface';
const axiosConnection = axios.create({
httpAgent: new http.Agent({ keepAlive: true })
});
class ElectrsApi implements AbstractBitcoinApi { class ElectrsApi implements AbstractBitcoinApi {
axiosConfig: AxiosRequestConfig = { axiosConfig: AxiosRequestConfig = {
timeout: 10000, timeout: 10000,
@ -11,52 +16,52 @@ class ElectrsApi implements AbstractBitcoinApi {
constructor() { } constructor() { }
$getRawMempool(): Promise<IEsploraApi.Transaction['txid'][]> { $getRawMempool(): Promise<IEsploraApi.Transaction['txid'][]> {
return axios.get<IEsploraApi.Transaction['txid'][]>(config.ESPLORA.REST_API_URL + '/mempool/txids', this.axiosConfig) return axiosConnection.get<IEsploraApi.Transaction['txid'][]>(config.ESPLORA.REST_API_URL + '/mempool/txids', this.axiosConfig)
.then((response) => response.data); .then((response) => response.data);
} }
$getRawTransaction(txId: string): Promise<IEsploraApi.Transaction> { $getRawTransaction(txId: string): Promise<IEsploraApi.Transaction> {
return axios.get<IEsploraApi.Transaction>(config.ESPLORA.REST_API_URL + '/tx/' + txId, this.axiosConfig) return axiosConnection.get<IEsploraApi.Transaction>(config.ESPLORA.REST_API_URL + '/tx/' + txId, this.axiosConfig)
.then((response) => response.data); .then((response) => response.data);
} }
$getTransactionHex(txId: string): Promise<string> { $getTransactionHex(txId: string): Promise<string> {
return axios.get<string>(config.ESPLORA.REST_API_URL + '/tx/' + txId + '/hex', this.axiosConfig) return axiosConnection.get<string>(config.ESPLORA.REST_API_URL + '/tx/' + txId + '/hex', this.axiosConfig)
.then((response) => response.data); .then((response) => response.data);
} }
$getBlockHeightTip(): Promise<number> { $getBlockHeightTip(): Promise<number> {
return axios.get<number>(config.ESPLORA.REST_API_URL + '/blocks/tip/height', this.axiosConfig) return axiosConnection.get<number>(config.ESPLORA.REST_API_URL + '/blocks/tip/height', this.axiosConfig)
.then((response) => response.data); .then((response) => response.data);
} }
$getBlockHashTip(): Promise<string> { $getBlockHashTip(): Promise<string> {
return axios.get<string>(config.ESPLORA.REST_API_URL + '/blocks/tip/hash', this.axiosConfig) return axiosConnection.get<string>(config.ESPLORA.REST_API_URL + '/blocks/tip/hash', this.axiosConfig)
.then((response) => response.data); .then((response) => response.data);
} }
$getTxIdsForBlock(hash: string): Promise<string[]> { $getTxIdsForBlock(hash: string): Promise<string[]> {
return axios.get<string[]>(config.ESPLORA.REST_API_URL + '/block/' + hash + '/txids', this.axiosConfig) return axiosConnection.get<string[]>(config.ESPLORA.REST_API_URL + '/block/' + hash + '/txids', this.axiosConfig)
.then((response) => response.data); .then((response) => response.data);
} }
$getBlockHash(height: number): Promise<string> { $getBlockHash(height: number): Promise<string> {
return axios.get<string>(config.ESPLORA.REST_API_URL + '/block-height/' + height, this.axiosConfig) return axiosConnection.get<string>(config.ESPLORA.REST_API_URL + '/block-height/' + height, this.axiosConfig)
.then((response) => response.data); .then((response) => response.data);
} }
$getBlockHeader(hash: string): Promise<string> { $getBlockHeader(hash: string): Promise<string> {
return axios.get<string>(config.ESPLORA.REST_API_URL + '/block/' + hash + '/header', this.axiosConfig) return axiosConnection.get<string>(config.ESPLORA.REST_API_URL + '/block/' + hash + '/header', this.axiosConfig)
.then((response) => response.data); .then((response) => response.data);
} }
$getBlock(hash: string): Promise<IEsploraApi.Block> { $getBlock(hash: string): Promise<IEsploraApi.Block> {
return axios.get<IEsploraApi.Block>(config.ESPLORA.REST_API_URL + '/block/' + hash, this.axiosConfig) return axiosConnection.get<IEsploraApi.Block>(config.ESPLORA.REST_API_URL + '/block/' + hash, this.axiosConfig)
.then((response) => response.data); .then((response) => response.data);
} }
$getRawBlock(hash: string): Promise<Buffer> { $getRawBlock(hash: string): Promise<Buffer> {
return axios.get<string>(config.ESPLORA.REST_API_URL + '/block/' + hash + "/raw", { ...this.axiosConfig, responseType: 'arraybuffer' }) return axiosConnection.get<string>(config.ESPLORA.REST_API_URL + '/block/' + hash + "/raw", { ...this.axiosConfig, responseType: 'arraybuffer' })
.then((response) => { return Buffer.from(response.data); }); .then((response) => { return Buffer.from(response.data); });
} }
@ -77,12 +82,12 @@ class ElectrsApi implements AbstractBitcoinApi {
} }
$getOutspend(txId: string, vout: number): Promise<IEsploraApi.Outspend> { $getOutspend(txId: string, vout: number): Promise<IEsploraApi.Outspend> {
return axios.get<IEsploraApi.Outspend>(config.ESPLORA.REST_API_URL + '/tx/' + txId + '/outspend/' + vout, this.axiosConfig) return axiosConnection.get<IEsploraApi.Outspend>(config.ESPLORA.REST_API_URL + '/tx/' + txId + '/outspend/' + vout, this.axiosConfig)
.then((response) => response.data); .then((response) => response.data);
} }
$getOutspends(txId: string): Promise<IEsploraApi.Outspend[]> { $getOutspends(txId: string): Promise<IEsploraApi.Outspend[]> {
return axios.get<IEsploraApi.Outspend[]>(config.ESPLORA.REST_API_URL + '/tx/' + txId + '/outspends', this.axiosConfig) return axiosConnection.get<IEsploraApi.Outspend[]>(config.ESPLORA.REST_API_URL + '/tx/' + txId + '/outspends', this.axiosConfig)
.then((response) => response.data); .then((response) => response.data);
} }

7
backend/src/index.ts
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@ -36,6 +36,7 @@ import bitcoinRoutes from './api/bitcoin/bitcoin.routes';
import fundingTxFetcher from './tasks/lightning/sync-tasks/funding-tx-fetcher'; import fundingTxFetcher from './tasks/lightning/sync-tasks/funding-tx-fetcher';
import forensicsService from './tasks/lightning/forensics.service'; import forensicsService from './tasks/lightning/forensics.service';
import priceUpdater from './tasks/price-updater'; import priceUpdater from './tasks/price-updater';
import { AxiosError } from 'axios';
class Server { class Server {
private wss: WebSocket.Server | undefined; private wss: WebSocket.Server | undefined;
@ -178,7 +179,7 @@ class Server {
setTimeout(this.runMainUpdateLoop.bind(this), config.MEMPOOL.POLL_RATE_MS); setTimeout(this.runMainUpdateLoop.bind(this), config.MEMPOOL.POLL_RATE_MS);
this.currentBackendRetryInterval = 5; this.currentBackendRetryInterval = 5;
} catch (e) { } catch (e: any) {
const loggerMsg = `runMainLoop error: ${(e instanceof Error ? e.message : e)}. Retrying in ${this.currentBackendRetryInterval} sec.`; const loggerMsg = `runMainLoop error: ${(e instanceof Error ? e.message : e)}. Retrying in ${this.currentBackendRetryInterval} sec.`;
if (this.currentBackendRetryInterval > 5) { if (this.currentBackendRetryInterval > 5) {
logger.warn(loggerMsg); logger.warn(loggerMsg);
@ -186,7 +187,9 @@ class Server {
} else { } else {
logger.debug(loggerMsg); logger.debug(loggerMsg);
} }
logger.debug(JSON.stringify(e)); if (e instanceof AxiosError) {
logger.debug(`AxiosError: ${e?.message}`);
}
setTimeout(this.runMainUpdateLoop.bind(this), 1000 * this.currentBackendRetryInterval); setTimeout(this.runMainUpdateLoop.bind(this), 1000 * this.currentBackendRetryInterval);
this.currentBackendRetryInterval *= 2; this.currentBackendRetryInterval *= 2;
this.currentBackendRetryInterval = Math.min(this.currentBackendRetryInterval, 60); this.currentBackendRetryInterval = Math.min(this.currentBackendRetryInterval, 60);