This project is a backend project developed in Java by using Spring Boot framework.

Dependencies:

• Java version 1.8
• Spring Boot version 2.5.3
• Maven version 3.6.3

The project architecture consists of the following modules as shown in the figure.

• Persistence Layer: Handles data file read/write operations
• In memory cache: Saves and orchestrate data operation during application runtime life cycle
• Web Service: Contains REST API and SOAP WS endpoints to act as client interfaces
• Scheduler: Operates based on provided cron expression to sync cache data to data file
• Log: Logs all the requests coming to web service endpoints

• app.conf file must be created in the following path C:\ericsson-java-prototype\conf

  • An example app.conf file can be found in src/main/resources/static/app.conf
  • The template of the app.conf file must be as shown in the following example.

  data_file_path={C:/ericsson-java-prototype/data/data.json}
  scheduler={*/10 * * * * *}

  • Data file path and cron expression should be written between curly braces.
  • data_file_path and scheduler parameters shouldn't be changed.

• Filling the data file is optional but the data format should be as follows if it will be filled

 {
 "subscribers": [
 {"id":"1","name":"Stephan King","msisdn":"905552551122"},
 {"id":"2","name":" Alice Gracy","msisdn":"905552551133"},
 {"id":"3","name":"Glory Wisdom", "msisdn":"905552551144"}
 ]
 }

• The log file is produced and located in C:\ericsson-java-prototype\log\app.log once the application is started.

In order to build and run the project in your locale run the following commands.

$ mvn clean package

$ mvn spring-boot:run

Once package building is completed a executable fat .jar is exported to project's target folder. The application can also be up by running the fat .jar with providing the app.properties file as a spring config file argument. (To do that the app.properties file shall be moved to /target folder and the following command shall be run from the directory)

$ java -jar -Dspring.config.file=app.properties ericsson-java-prototype-0.0.1-SNAPSHOT.jar

• REST Services:

  • POST: http://localhost:8080/subscriber
    • Request:

      {
      "id": "1001",
      "name": "Nikola Tesla",
      "msisdn": "+905552551122"
      }

  • PUT: http://localhost:8080/subscriber
    • Request:

      {
      "id": "1001",
      "name": "Albert Einstein",
      "msisdn": "+905552551123"
      }

  • DELETE: http://localhost:8080/subscriber
    • Request:

      {
      "id": "1001"
      }

• SOAP Services:

  • WSDL: http://localhost:8080/subscriber-data/subscribers.wsdl

  • getAllSubscribers:

    • Request:

       <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ser="http://www.ericsson.com/java/prototype/soap/services">
         <soapenv:Header/>
         <soapenv:Body>
            <ser:getAllSubscribersRequest/>
         </soapenv:Body>
      </soapenv:Envelope>

  • getSubscriberById:

    • Request:

      <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ser="http://www.ericsson.com/java/prototype/soap/services">
         <soapenv:Header/>
         <soapenv:Body>
            <ser:getSubscriberByIdRequest>
               <ser:id>1001</ser:id>
            </ser:getSubscriberByIdRequest>
         </soapenv:Body>
      </soapenv:Envelope>