109 lines
3.3 KiB
JavaScript
109 lines
3.3 KiB
JavaScript
const logger = require('./logger.js');
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const api = require('./api.js');
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const http = require('http');
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const ID = require('./constants.js').VARIABLE_ID;
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var server;
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async function start() {
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if (!server) {
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server = http.createServer();
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}
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server.listen(global.config.server.port, global.config.server.listen).on('listening', () => {
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logger.debug('server listening on ' + global.config.server.listen + ':' + global.config.server.port + '...');
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handleRequests();
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});
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}
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function handleRequests() {
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server.on('request', (request, response) => {
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request.timestamp = new Date().getTime();
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if (request.url.length > 1 && request.url.endsWith('/')) {
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request.url = request.url.substring(0, request.url.length - 1);
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}
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let id;
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let endpointName = request.url;
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let separatorIndex = request.url.lastIndexOf('/');
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if (separatorIndex > 0) {
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id = request.url.substring(separatorIndex + 1, request.url.length);
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if (!isNaN(id)) {
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endpointName = endpointName.substring(0, separatorIndex + 1) + ID;
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}
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}
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var endpoint = api.getEndpoints().get(endpointName);
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if (endpoint === undefined) {
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endRequest(
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request,
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response,
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'endpoint \'' + request.url + '\' not defined',
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501
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);
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return;
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}
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endpoint = endpoint[request.method];
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if (endpoint === undefined || endpoint.method === undefined) {
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endRequest(
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request,
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response,
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'endpoint \'' + request.url + '\' does not have any handlers for ' + request.method + ' requests',
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405
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);
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return;
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}
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getRequestParams(request)
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.then((params) => {
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return endpoint.method(id, params);
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})
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.then((result) => {
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endRequest(request, response, result);
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})
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.catch((err, code) => {
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if (code == undefined) {
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code = 500;
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}
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endRequest(request, response, err, code);
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});
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});
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}
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function endRequest(request, response, msg, code) {
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code = code || 200;
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var object = {
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request: request,
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code: code
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}
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if (msg != undefined) {
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if (msg instanceof Error) {
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object.data = msg.toString();
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} else if (msg instanceof Object) {
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object.data = JSON.stringify(msg);
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} else {
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object.data = msg;
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}
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}
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response.setHeader('Access-Control-Allow-Origin', '*');
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response.setHeader('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept');
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response.writeHead(object.code);
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response.end(object.data);
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logger.http(object);
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}
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function getRequestParams(request) {
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return new Promise((resolve, reject) => {
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var params = '';
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request.on('data', (data) => {
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params += data;
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});
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request.on('end', () => {
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if (params == undefined || params.length == 0) {
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return resolve();
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}
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return resolve(new URLSearchParams(params));
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});
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});
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}
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module.exports = {
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start
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} |