Server : 4 MeansManager - 17chuchu/AutomaticBicycleInterface GitHub Wiki

Table of Contents

• MeansManager.py
  • Initializing
  • Port
  • Register New Room
• MeansComment.py

MeansManager.py

MeansManager is a child class of WebSocket. It is used to connect to Means application that is used to direct the video stream from a bike to multiple clients. MeansManager is located in server/ServerApplication/component/MeansManager.py

Initializing

Run a Thread that will keep this class running. This code is located at server/ServerApplication/urls.py.

MeansManager.initManager()  #line 20

Port

MeansManager is a web socket server so it needs a port. You can customize its port number here.

meansport = 7100.  #line 27

Register New Room

This function will register 2 rooms, one for a bike and one for a client. Then it will also send a JSON string package to Means application.

@staticmethod   #line 89
def registerNewRoom(bikeid):
    try:
        if(MeansManager.currentmeans != None):  #If the Means React app is connected.
            bikeroomid = str(uuid.uuid4()).replace('-','')  #Generate room id for a bike.
            clientroomid = str(uuid.uuid4()).replace('-','')  #Generate room id for a client.
           
            data = dict()  #Generate a package to be sent to a React app that will manage the video stream.
            data['bikeroomid'] = bikeroomid
            data['clientroomid'] = clientroomid
            info = json.dumps(MeansComment.generateComment('registerNewRoom',data))
            MeansManager.currentmeans.sendMessage(info)

            BicycleManager.bicycleroom[bikeid] = bikeroomid  #Send room id to BicycleManager
            ClientManager.clientroom[bikeid] = clientroomid  #Send room id to ClientManager
    except Exception as e:
        print("Message error is : " + e)

MeansComment.py

MeansComment is a class that provides a template to create packages of information to be sent to the Means React web application. MeansComment.py is located in server/ServerApplication/component/Comment/MeansComment.py

@staticmethod  #line 7
def generateComment(topic, comment):
    data = dict()
    data['topic'] = topic. #Topic (String) that will define what function will take care of this pacakage such as 'registerNewRoom'
    data['comment'] = comment  #Data (String or Dictionary) that is needed to be sent such as room ids. 
    return data