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| 'use strict';
const http = require('http');
const https = require('https');
// const fs = require('fs');
// const uuid = require('node-uuid');
// const AWS = require('aws-sdk');
const _ = require('lodash');
const request = require('request');
// const rmdir = require('rimraf');
const jdbc = require('./jdbc');
const xml2js = require('xml2js');
const responseHandler = require('./responseHandler');
const util = require('./util');
const jsonRequestHandler = (context, output) => {
if(util.notNull(output.replBody) && util.notNull(output.bodyTokens)) {
if(typeof(output.replBody) === 'string') {
_.forEach(output.bodyTokens, (value, key) => {
const wrappedKey = `{${key}}`;
if(output.replBody.includes(wrappedKey)) {
const re = new RegExp(wrappedKey, 'g');
output.replBody = output.replBody.replace(re, JSON.stringify(value));
}
});
// Definitely NOT a security concern /s
const replBody = eval("(" + output.replBody + ")"); // jshint ignore:line
output.body = replBody;
} else {
output.body = util.tokenRepl(output.body, output.bodyTokens);
}
output.runPreRequestHooks(output);
}
if(util.notNull(output.body)) {
var keys = Object.keys(output.body);
if(keys !== null && keys.length > 0) {
output.headers['Content-Length'] = Buffer.byteLength(JSON.stringify(output.body), 'utf-8');
}
}
const outCtx = {
succeed: o => {
const end = new Date().getTime();
console.log("vendor success in", (end - start));
return context.succeed(o);
},
fail: e => {
const end = new Date().getTime();
console.log("vendor fail in", (end - start));
context.fail(e);
},
done: (e, o) => {
const end = new Date().getTime();
console.log("vendor done in", (end - start));
context.done(e, o);
}
};
const start = new Date().getTime();
let conn;
if (output.protocol.startsWith('https')) {
// console.log("making request", {
// headers: output.headers,
// protocol: output.protocol,
// body: output.body,
// host: output.host,
// hostname: output.hostname,
// method: output.method,
// path: output.path
// });
conn = https.request(output);
} else {
conn = http.request(output);
}
conn.on('error', err => { context.fail(util.failure(400, err)); });
conn.on('response', jsonBackHandler(outCtx, output));
if (util.notNull(output.body)) { conn.write(JSON.stringify(output.body)); }
conn.setTimeout(10000, () => {
context.fail(util.failure(504, 'Request timed out'));
});
conn.end();
};
const jsonBackHandler = (context, output) => res => {
let rawBody = "";
res.on('readable', () => {
const data = res.read();
if (typeof(data) !== 'undefined' && data !== null) {
rawBody += data;
}
});
res.on('end', () => {
if (res.statusCode >= 200 && res.statusCode <= 207) {
const handler = responseHandler.getResponseHandler(res.headers);
handler(res, rawBody, context, output);
} else {
context.done(util.failure(res.statusCode, rawBody, res.statusMessage));
}
});
res.on('error', err => context.fail({error: err.toString()}));
};
const soapRequestHandler = (context, output) => {
const soapEnvelope = 'soapenv:Envelope';
const soapBody = 'soapenv:Body';
const soapHeader = 'soapenv:Header';
xml2js.parseString(output.body, (err, result) => {
const envelope = result[soapEnvelope];
if(util.notNull(envelope)) {
if(util.notNull(envelope[soapBody]) && typeof envelope[soapBody] === 'object') {
envelope[soapBody] = util.tokenRepl(envelope[soapBody], output.bodyTokens);
}
if(util.notNull(envelope[soapHeader])) {
envelope[soapHeader] = util.tokenRepl(envelope[soapHeader], output.bodyTokens);
}
result[soapEnvelope] = envelope;
}
const builder = new xml2js.Builder();
output.body = builder.buildObject(result);
const method = output.method ? output.method.toLowerCase() : 'post';
const reqOptions = {
url: output.findConfig('base.url') + output.pathname,
headers: output.headers,
body: output.body,
};
request[method](reqOptions, (err, res, body) => {
if (res.statusCode >= 200 && res.statusCode <= 207) {
const handler = responseHandler.getResponseHandler(res.headers, 'soap');
handler(res, body, context, output);
} else {
context.fail(util.failure(res.statusCode, err));
}
});
});
};
const jdbcRequestHandler = (context, output) => {
jdbc.send(context, output);
};
const multipartRequestHandler = (context, output) => {
// fetchS3File(context, output)
// .then( tmpPath => {
// const formData = Object.assign({}, output.form, {
// file: fs.createReadStream(tmpPath + output.file.Key),
// });
//
// const method = output.method.toLowerCase();
//
// const reqOptions = {
// url: output.protocol + '//' + output.hostname + output.pathname,
// formData: formData,
// headers: output.headers,
// };
//
// request[method](reqOptions, (err, res, body) => {
// if(!err) {
// rmdir(tmpPath, () => {
// if (res.statusCode >= 200 && res.statusCode <= 207) {
// const handler = responseHandler.getResponseHandler(res.headers);
// handler(res, body, context, output);
// }
// });
// } else {
// context.fail(util.failure(400, err));
// }
// });
// })
// .catch( error => {
// context.fail(error);
// });
};
const encodedUploadHandler = (context, output) => {
// fetchS3File(context, output)
// .then(tmpPath => {
// const filePayload = {
// name: output.file.Key,
// body: fs.readFileSync(tmpPath + output.file.Key, { encoding: 'base64' }),
// // type: mime.lookup(output.file.Key),
// // size: fs.statSync(tmpPath + output.file.Key).size,
// };
//
// output.body = Object.assign({}, filePayload, output.body, output.form);
// output.headers['Content-Type'] = 'application/json';
// output.runPreRequestHooks(output);
// // This is a JSON request now, so hand it off to the JSON handler, yeah?
// jsonRequestHandler(context, output);
//
// })
// .catch( error => {
// context.fail(error);
// });
};
// When we've decided that execution should halt
// by passing shouldContinue === false
const stopExecutionHandler = (context, output) => {
const convertedResponse = output.convertResponse({
body: JSON.stringify(output.responseBody),
status: 'Bad Request',
statusCode: output.statusCode
});
const errors = convertedResponse.body.errors || convertedResponse.body;
context.done(util.failure(convertedResponse.statusCode, JSON.stringify(errors), 'Bad Request'), convertedResponse);
};
// Determines how to make the request to the vendor
// Usually based on the content-type but some previous logic
// may define the handler for special circumstances by attaching
// it to `output.requestHandler`
const getRequestHandler = (context, output) => {
output.headers['Content-Type'] = output.headers['Content-Type'] || 'application/json';
const contentType = output.headers['Content-Type'].split(';')[0].toLowerCase();
let handler;
if(output.shouldContinue === false) {
console.log('using stopExecutionHandler');
return stopExecutionHandler;
}
if(output.element.protocolType === 'soap') {
return soapRequestHandler;
} else if(output.element.protocolType === 'jdbc') {
return jdbcRequestHandler;
}
if(util.notNull(output.reqHandler)) {
switch(output.reqHandler) {
case 'encodedUpload':
console.warn('encodedUploadHandler handler temporarily unavailable');
handler = encodedUploadHandler;
break;
default:
console.warn('An explicit handler was assigned to `output` but not defined in `requestHandler.js`');
}
} else {
switch(contentType) {
case 'application/json':
case 'application/jsonp':
handler = jsonRequestHandler;
break;
case 'multipart/form-data':
console.warn('multipartRequestHandler handler temporarily unavailable');
handler = multipartRequestHandler;
break;
default:
console.warn('Request handler not found');
}
}
if(!util.notNull(handler)) {
handler = jsonRequestHandler;
}
return handler;
};
module.exports = {getRequestHandler, stopExecutionHandler, encodedUploadHandler,
multipartRequestHandler, soapRequestHandler, jsonRequestHandler, jdbcRequestHandler};
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