obm.js

module.exports = function(RED) {
  var parser = require('xml2js').parseString;

  function ParseObm(config) {
    RED.nodes.createNode(this, config);
    const node = this;
    this.on('input', (msg) => {
      parser(msg.payload, (err, result) => {
        if (err) {
          node.error(err, msg);
          node.status({ fill: 'red', shape: 'dot', text: 'Error parsing XML.' });
        } else {
          // TODO: debulkify incoming messages ??
          const returnMsg = Object.assign({}, msg);
          const httpMsg = Object.assign({}, msg);
          try {
            // get rid of the stuff we don't need
            const root = result['soapenv:Envelope']['soapenv:Body'][0].notifications[0];
            const data = root.Notification[0].sObject[0];
            // start building payload
            returnMsg.payload = {
              organizationId: root.OrganizationId[0],
              actionId: root.ActionId[0],
              type: data.$['xsi:type'].split(':')[1],
              sobject: {}
            };
            // check for a sessionId
            if (Array.isArray(root.SessionId)) {
              returnMsg.payload.sessionId = root.SessionId[0];
            }
            // look at each node and see if it contains an array with data
            for (let [key, val] of Object.entries(data)) {
              if (Array.isArray(val)) {
                returnMsg.payload.sobject[key.split(':')[1].toLowerCase()] = val[0];
              }
            }
            // Prepare the return message for http
            if (httpMsg.headers) {
              httpMsg.headers['Content-Type'] = 'application/xml';
            } else {
              httpMsg.headers = {
                'Content-Type': 'application/xml'
              };
            }

            httpMsg.payload = `<?xml version="1.0" encoding="UTF-8"?>
    <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
        <soapenv:Body>
            <notificationsResponse xmlns="http://soap.sforce.com/2005/09/outbound">
                <Ack>true</Ack>
           </notificationsResponse>
        </soapenv:Body>
    </soapenv:Envelope>`;
            node.send([returnMsg, httpMsg]);
            node.status({});
          } catch (err) {
            node.status({ fill: 'red', shape: 'dot', text: 'Error!' });
            node.error(err, msg);
          }
        }
      });
    });
  }
  RED.nodes.registerType('obm', ParseObm);
};