Ettevõttesüsteemide integreerimine 2021/22 kevad

Assignment #3

• General Info
  • Points: 5
  • Deadline for submission: 29 March 2022, 14:00
  • Assessment form: Group Presentations
  • You should work in the same team as you have formed earlier.
• Objectives:
  • The main purpose of this assignment is to enhance students' understanding of how to integrate two different systems using SOAP technology. This could be done by developing a simple SOAP server aka service provider to enable other clients consume the services.
• Tasks:
  • Students should develop SOAP services for the following operations:
  1. Task 1:The SOAP server should provide ping services to any client to test whether a particular host is reachable across an IP network. You could implement ping -c 2 domain_name Linux command as a SOAP web service to enable other web-based client to invoke this service.
  2. Task 2:The SOAP server should provide basic DNS lookup service to translate a domain name to it's IP address. This is going to be another web-enabled DNS lookup service that will replicate host domain_name Linux command.
  3. Task 3:The SOAP server should extend Task 2 and provide a service to gather more DNS information. This web service will help DNS administrators to troubleshoot DNS problems and/or interrogate DNS namer servers. The service should query the Name Servers (NS), Authoritative Name Server, and Mail Exchange (MX) records of a particular domain name.
• How to?
  • We assume that you have setup your local development environment.
  • Download Attach:this.zip source_code, extract and move it to a reasonable place to use it as a baseline to implement your services
  • This folder includes a file for SOAP Server (soap_server.py) and two SOAP Clients (soap_client.py and app.py)
    • soap_server.py will implement your services and capture all services in a WSDL file. You should run your server locally, let's use 8090 port number.
    • soap_client.py can be used to test your services locally.
    • app.py is a Flask app that you should deploy to your Heroku application. This app should implement the following routes:
      • / will invoke Task/Service 1
      • /showip will invoke Task/Service 2
      • /dns will invoke Task/Service 3
    • As app.py is a remote web app deployed on Heroku, you would need to create a tunnel from the public internet i.e. your Heroku app to your local machine, you can use ngrok application.
      • Install ngrok: sudo snap install ngrok
      • You need to execute this ngrok http 8090 command (if your SOAP server is running over 8090 port number) to create a public URL to your local SOAP server to enable external clients to access your WSDL file.
      • You can call these services via a web app - developed either in Flask, JavaScript, Java, Go, or PHP.
      • If you prefer to use Flask app (app.py) then you should replace the URL of the WSDL file with the URL you got from ngrok.
      • Visit Session 2 where we have provided step by step instructions for deploying your app to Heroku.