Application servers for use with SAS Viya

This package has two servers:

1. viya-appserverjs - Use this for developing an app server for web applications(see packages/appjs)

2. viya-apiserverjs - Use this to develop rest api servers(see packages/apijs)

Usage

Specify it as a dependency in your package.json just as you do with other dependencies

Use npx command to start the server

npx @sassoftware/viyaappserverjs

Basic configuration

1. Set the default settings in Dockerfile. This will ensure these are set when you build containers.
2. The defaults can be overriden using environment variables.

Sample env file

When running on a non-docker environment, you can use a .env

VIYA_SERVER=<your viya server>
APPHOST=localhost < can also be dns name of your server. ex: viyaiscool.unx.sas.com>
APPPORT=5000   <any port of your choice>
APPNAME=viyaapp

CLIENTID=viyaapp
CLIENTSECRET=secret

Sample Dockerfile

FROM node:12.16.1-alpine
LABEL maintainer="your email"
WORKDIR /usr/src/app
COPY . .
RUN npm install
# RUN npm run build (if you have to build something)
EXPOSE 8080
ENV APPHOST=0.0.0.0

AUTHFLOW=code

# The following are defaults. Override them as needed
# APPLOC - where the file specified in APPENTRY is
# APPENTRY - the main entry of the application
ENV APPLOC=./public
ENV APPENTRY=index.html
# if your app takes advantage of appenv.js to pass configuration to the web application 
# ENV APPENV=appenv.js 

# See notes below on running with SSL enabled
ENV TLS_CREATE="C:US,ST:NC,L:Cary,O:yourcompany,OU:STO,CN:localhost"
ENV SAMESITE=None,secure

# It is better to set this before invoking the server
ENV NODE_TLS_REJECT_UNAUTHORIZED=0

# set this to YES if you want access to the authentication token in the app
ENV USETOKEN=NO

CMD ["npx", "@sassoftware/viya-appserverjs"]

Running with SSL enabled -- Recommended

This is the recommended setting. This will also make browsers like Chrome run with the SAMESITE settings set to Default - your users will thank you.

Make sure you specify the VIYA_SERVER with a protocol of https.

TLS certificates

• Option 1: Let server create a temporary unsigned certificate

  ENV TLS_CREATE=C:US,ST:NC,L:Cary,O:YourCompany,OU:yourgroup,CN:localhost

• Option 2: Provide your own key and certificate key

ENV TLS_KEY=../certs/self/key.pem
ENV TLS_CERT=../certs/self/certificate.pem

• Option 3: Provide key and certificate as a pfx file

ENV TLS_PFX=../certs/sascert/sascert2.pfx