@condor-labs/axios/src/index.js

This module provide and useful helper to use the official Axios library.

const axios = require("axios");
const http = require("http");
const https = require("https");
const {
  request: requestStacktrace,
  response: responseStacktrace,
} = require("./plugins/stacktrace");

const DEFAULT_SOCKETS_TIMEOUT = 4*1000; // 4 secs

const {
  AXIOS_KEEP_ALIVE_DISABLED,
  AXIOS_KEEP_ALIVE_MSECS,
  AXIOS_MAX_SOCKETS,
  AXIOS_MAX_TOTAL_SOCKETS,
  AXIOS_MAX_FREE_SOCKETS,
  AXIOS_SOCKETS_SCHEDULING,
  AXIOS_SOCKETS_TIMEOUT
} = process.env;

let httpAgent = undefined,
  httpsAgent = undefined,
  httpAgentDef = undefined,
  httpsAgentDef = undefined;

if(AXIOS_KEEP_ALIVE_DISABLED != "true"){

  let agentSettings = {
    keepAlive: true,
    keepAliveMsecs: AXIOS_KEEP_ALIVE_MSECS ? +AXIOS_KEEP_ALIVE_MSECS : undefined,
    maxSockets: AXIOS_MAX_SOCKETS ? +AXIOS_MAX_SOCKETS : undefined,
    maxTotalSockets: AXIOS_MAX_TOTAL_SOCKETS ? +AXIOS_MAX_TOTAL_SOCKETS : undefined,
    maxFreeSockets: AXIOS_MAX_FREE_SOCKETS ? +AXIOS_MAX_FREE_SOCKETS : undefined,
    scheduling: AXIOS_SOCKETS_SCHEDULING,
    timeout: AXIOS_SOCKETS_TIMEOUT ? +AXIOS_SOCKETS_TIMEOUT : DEFAULT_SOCKETS_TIMEOUT
  };

  httpAgent = new http.Agent(agentSettings);
  httpsAgent = new https.Agent(agentSettings);

  httpAgentDef = new http.Agent(agentSettings);
  httpsAgentDef = new https.Agent(agentSettings);
}

const instance = axios.create({
  httpAgent,
  httpsAgent,
});
const instanceDefault = axios.create({
  httpAgentDef,
  httpsAgentDef,
});

// add interceptor to the request
instance.interceptors.request.use(requestStacktrace, undefined, {
  synchronous: true,
});
instanceDefault.interceptors.request.use(requestStacktrace, undefined, {
  synchronous: true,
});
// add interceptor to the response
instance.interceptors.response.use(undefined, responseStacktrace, {
  synchronous: true,
});
instanceDefault.interceptors.response.use(undefined, responseStacktrace, {
  synchronous: true,
});

// setup default instance.
instance.default = instanceDefault;

module.exports = instance;