1. SpringBoot for RESTFUL webservice development

2. Swagger for API documentation

3. Log4j2 for Loggings

4. Postman to communicate to the web service(To send request and recieve response)

5. Apache Tomcat server

1. git clone https://github.com/Reddyprashant/Cerence-CodingChallenge.git

2. UnZip and Import the project

3. Install Apache Tomcat server and configure the Tomcat server path in IDE

4. Run "mvn clean install" command in IDE to build and package the application

5. Run "mvn spring-boot:run" Command to Run the application on Tomcat Server

6. Open Postman
   a. Using GET method and URI http://localhost:8080/v1/fibonacci/ we can check whether our application is working or not just a "health check"
   
   b. Generate the token using GET method and URI http://localhost:8080/v1/token and Token validity is for 2 minutes after 2 minutes we should generate the new token
   

   c. To generate the fibonacci sequence 

       1. copy the generated token and select Authorization as "Bearer Token" in Postman and paste the token
       
       2. Contstraints of number n, its value should be between 0 and 2000
   
       3. Using GET method and URI http://localhost:8080/v1/fibonacci/number (input number returns first n fibonacci numbers)
       
7. Logging has been implemented using Log4j2, we can check the errorlogs in "application.log" file inside the folder named "logs" in our  web service

 1. To Test various scenarios for fibonacci sequence generation run FibonacciGeneratorApplicationTests Test Class in IDE

 2. To Test different scenarios for Token validation run TokenServiceTest Test Class in IDE

RESTFUL service is secured by token generated using AES Encryption and Decryption algorithm.

1. http://localhost:8080/swagger-ui.html to check the API documentation.

2. we can verify the methods implemented in our web service.