93 lines
2.7 KiB
JavaScript
93 lines
2.7 KiB
JavaScript
const logger = require('./logger.js');
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const commands = require('./commands.js');
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const http = require('http');
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const { config } = require('process');
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let server;
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let api;
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async function start() {
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const listen = global.config?.server?.listen || '0.0.0.0';
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const port = global.config?.server?.port;
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setupAPI();
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if (server === undefined) {
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server = http.createServer();
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}
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return new Promise((resolve, reject) => {
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server.listen(port, listen)
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.on('listening', function () {
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logger.info('server listening on ' + global.config.server.listen + ':' + global.config.server.port + '...');
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handleRequests();
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resolve();
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});
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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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respond(request, response);
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});
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}
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async function respond(request, response) {
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if (request === undefined || response === undefined) {
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return;
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}
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let endpoint = api[request.method]?.[request.url];
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if (endpoint === undefined) {
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return finishRequest(request, response, { error: 'endpoint not defined' }, 501);
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}
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try {
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endpoint.result = await commands.execute(endpoint);
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} catch (err) {
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endpoint.error = err.toString();
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return finishRequest(request, response, endpoint, 501);
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}
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return finishRequest(request, response, endpoint);
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}
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function finishRequest(request, response, data, code) {
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if (response === undefined) {
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return;
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}
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if (code === undefined) {
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code = 200;
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}
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if (code === 200) {
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data.status = 'ok';
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} else {
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data.status = 'error';
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}
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data.time = (new Date().getTime() - request.timestamp) + 'ms';
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response.writeHead(code);
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const json = JSON.stringify(data);
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response.end(json);
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logger.http({ request: request, code: code, data: json });
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}
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function setupAPI() {
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const apiConfig = global.config?.api;
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if (apiConfig === undefined || apiConfig.length === 0) {
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throw new Error('no api endpoints configured - aborting');
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}
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const now = new Date().getTime();
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api = {};
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logger.debug('setting up api...');
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let index;
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for (index = 0; index < global.config.api.length; index++) {
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let endpoint = global.config.api[index];
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let key = endpoint.url;
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let method = endpoint.method.toUpperCase();
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delete endpoint.method;
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delete endpoint.url;
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let methodApi = api[method] || {};
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methodApi[key] = endpoint;
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api[method] = methodApi;
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}
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logger.debug('api setup with ' + index + ' endpoints after ' + (new Date().getTime() - now) + 'ms');
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}
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module.exports = {
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start
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} |