Cloud Optical Spectrum Analyzer - an application that emulates a very basic text command interface of legacy laboratory equipment.

• Python for REST APIs
• Angular 9 for developing the web application

• SINGLE button retrieves a single trace from the virtual OSA.
• START button initiates continuous (repetitive) acquisition with ~1Hz(1 second) refresh rate.
• STOP stops the acquisition.
• Persist Data Feature: Two layers of data plotting is enabled for demonstration purposes but the application can support any number of plot layers. For example, there is a layer L1 (green) of data plotted on the graph, now if the user enables the Persist Data option by selecting YES and clicks on SINGLE button then a new layer L2 (red) of plot will be displayed. So there are two layers L1 and L2. If the user clicks again on SINGLE button the first layer L1 will be removed and a new layer L3 (green) will be added. The graph will displaying layers L2 and L3.
• Logs section tracks all the user actions.
• Command Console section allows the user to query the commands and see the result. For example, enter trace and the results will be displayed to the user.

1. Execute command git clone https://github.com/uanthwal/cloud-osa-app in command prompt/Gitbash/Terminal to the clone the repository.

2. In the command prompt/Gitbash/Terminal window, navigate to the backend directory and execute the command: pip install -r requirements.txt to install all the Python packages used by this application.

3. Execute command: python backend.py to start the server code.

4. To run the web application locally there are two options:

   *a. Running the application from the source code

   1. Open command prompt and navigate to the root level of the cloned repository, execute command npm install to install the application dependencies.
   2. Execute command ng serve and a message will be displayed that the application is served on http://localhost:4200
   3. Open web browser and launch the application using http://localhost:4200

   *b. Running the application from the build

   1. Open command prompt and execute command npm install http-server -g to install a lightweight http-server that will serve the web application locally.
   2. Navigate to the root level of the cloned repository and execute command: http-server dist/cloud-osa-app a message will be displayed that the application is running on http://127.0.0.1:8080/
   3. Open web browser and launch the application using http://127.0.0.1:8080/