def sen_start_noti(uid):
	import firebase_admin
	from firebase_admin import credentials
	from firebase_admin import db
	from firebase_admin import messaging
        # Fetch the service account key JSON file contents
	cred = credentials.Certificate('servicekey.json')

        # Initialize the app with a service account, granting admin privileges
	registration_token = db.reference('SentinelProc').child(uid).child('TokenId').get()
	print(registration_token)
	b = 'System has started working on your Satellite Imagery Request. You will receive an email shortly'
	message = messaging.Message(
	android=messaging.AndroidConfig(
		priority='normal',
		notification=messaging.AndroidNotification(
		title='On Demand Satellite Imagery',
		body=b,
		icon='ic_launcher',
		color='#006666',
		sound='notification_sound',
		tag = 'satelliteprocessingresult'
                ),
        ),
	token=registration_token,
		data={
		'image_id': 'random',
		'result_status': 'random2'
	},
	)

# Send a message to the device corresponding to the provided
# registration token.
	response = messaging.send(message)
# Response is a message ID string.
	print('Successfully sent message:', response)                            

	return