node-rfc: npm install node-rfc doesn't work

@bsrdjan I don’t have a public repo available to show it, so I can roughly explain how we build a base image for our test environment.

Dockerfile for base image with SDK:

ARG node=node:6.12.0
FROM $node AS download

ARG JFROG_CREDENTIALS

RUN \
  curl -f -u ${JFROG_CREDENTIALS} -o SAPCAR_0-80000935.EXE "https://url-to/SAPCAR_617-80000935.EXE" && \
  curl -f -u ${JFROG_CREDENTIALS} -o NWRFC_38-20004565.SAR "https://url-to/NWRFC_38-20004565.SAR" && \
  chmod +x SAPCAR_0-80000935.EXE && \
  ./SAPCAR_0-80000935.EXE -xvf NWRFC_38-20004565.SAR && \
  rm SAPCAR_0-80000935.EXE && \
  rm NWRFC_38-20004565.SAR && \
  echo "/nwrfcsdk/lib" > /etc/ld.so.conf.d/saprfc.conf && \
  ldconfig

FROM $node

ENV \
  SAPRFC_VERSION=7210.0.38

COPY --from=download /nwrfcsdk /nwrfcsdk

RUN \
  echo "/nwrfcsdk/lib" > /etc/ld.so.conf.d/saprfc.conf && \
  ldconfig

This is a multi-stage Dockerfile which works fine with Docker 17.05 or newer to remove the download credentials of the first download stage. If you have the files locally, just use a COPY instruction from your host into the image instead.

I build this image with docker build --build-arg JFROG_CREDENTIALS=user:pass -t saprfc . You can specify --build-arg node=node:8.9.1 to use the latest Node.js base image 8.9.1 instead of 6.12.0.

Then you need an application

package.json:

{
  "name": "sxmicli",
  "version": "0.0.2",
  "description": "Call SXMI functions from command line.",
  "main": "app.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "node-rfc": "0.1.12"
  }
}

app.js:

"use strict";

var rfc = require('node-rfc');

var dest = process.env.DEST || 'yourdefault';
var extCompany = process.env.EXTCOMPANY || 'yourdefault';
var extProduct = process.env.EXTPRODUCT || 'yourdefault';
var sxmiCommand = process.env.COMMAND || '';
var sxmiOptions = process.env.OPTIONS || '';

var client = new rfc.Client({ dest }, true);

console.log('Connecting to', dest);
client.connect((err) => {
  var func;
  if (err) {
    return console.error('could not connect to server', err);
  }

  console.log('Connected');
  func = client.invoke('SXMI_VERSIONS_GET', { INTERFACE: 'XOM' }, function(err, res) {
    if (err) {
      return console.error('Error invoking SXMI_VERSIONS_GET:', err);
    }

    func = client.invoke('SXMI_LOGON', {
      EXTCOMPANY: extCompany,
      EXTPRODUCT: extProduct,
      INTERFACE: 'XOM',
      VERSION: res.VERSIONS[0].VERSION
    }, function(err, res) {
      if (err) {
        return console.error('Error invoking SXMI_LOGON:', err);
      }

      var options;
      eval('options =' + sxmiOptions);
      func = client.invoke(sxmiCommand, options, function(err, res) {
        if (err) {
          return console.error('Error invoking ' + sxmiCommand + ':', err);
        }

        console.log('Result:', res);

        func = client.invoke('SXMI_LOGOFF', {
          INTERFACE: 'XOM'
        }, function(err, res) {
          if (err) {
            return console.error('Error invoking SXMI_LOGOFF:', err);
          }
        });
      });
    });
  });
});

Add a sapnwrfc.ini.

Dockerfile for the app:

FROM saprfc

WORKDIR /code
COPY package.json /code/package.json

RUN npm install --production

COPY . /code

CMD ["node", "app.js"]

I use a small helper bash script to run this container

sxmicli.sh:

#!/bin/bash
export COMMAND=$1
export OPTIONS=$2

docker run -e COMMAND -e OPTIONS --rm -it plossys/sxmicli

You can run it eg.

$ ./sxmicli.sh RSPO_SXOMS_VERSION "{}"
module.js:597
  return process.dlopen(module, path._makeLong(filename));
                 ^

Error: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by /code/node_modules/node-rfc/build/rfc/rfc.node)
    at Error (native)
    at Object.Module._extensions..node (module.js:597:18)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.require (module.js:497:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (/code/node_modules/node-rfc/index.js:6:11)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)

Just released 0.1.12 has 8.9 included and you may test in your system.