b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
99 lines
2.3 KiB
JavaScript
Executable file
99 lines
2.3 KiB
JavaScript
Executable file
'use strict';
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/**
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Node http/socket/promise wrapper.
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*/
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var http = require('http');
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var debug = require('debug')('marionette-socket-host:request');
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var Promise = require('promise');
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var RETRIES = 60;
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var RETRY_TIMER = 5000;
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function PythonError(msg) {
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Error.call(msg);
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this.name = 'python_error';
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}
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PythonError.prototype = {
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__proto__: Error.prototype
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};
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module.exports = function request(socketPath, path, json, retry) {
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retry = retry || 0;
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var body = JSON.stringify(json || {});
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return new Promise(function(accept, reject) {
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debug('issue request', socketPath, path, json);
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var req = http.request({
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socketPath: socketPath,
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method: 'POST',
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path: path,
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headers: {
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'Content-Length': Buffer.byteLength(body),
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'Content-Type': 'application/json'
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}
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});
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req.setTimeout(300 * 1000, function() {
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reject(new Error('Host request timeout exceeded.'));
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});
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// The unix socket server may or may not be ready at this point so we retry
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// up to 5 times to ensure we are connected...
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req.once('error', function(err) {
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if (retry > RETRIES) {
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debug('At maximum retries...');
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return reject(err);
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}
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debug('Error in socket request retrying...', err);
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setTimeout(function() {
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request(socketPath, path, json, retry + 1).then(accept, reject);
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}, RETRY_TIMER);
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});
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// request sender....
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req.write(body);
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req.on('abort', function() {
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debug('Request', retry, 'aborted.');
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});
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// response handler...
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req.on('response', function(res) {
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var data = '';
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res.on('data', function(buffer) {
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data += buffer;
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});
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res.on('end', function() {
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debug(res.statusCode, data);
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var json = JSON.parse(data);
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if (res.statusCode < 200 || res.statusCode > 299) {
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var err = new PythonError(json.message);
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err.stack = json.stack;
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reject(err);
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}
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else if (path === '/start_runner') {
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if (data.length) {
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accept(json);
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}
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else {
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reject(
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new Error('Request to start_runner expects data with response!')
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);
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}
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}
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else {
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accept(json);
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}
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});
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});
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// send the request...
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req.end();
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});
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};
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