We have an already running MQTT setup for communication between smart home devices and remote server, for remotely controlling the devices. Now we want to integrate our devices with Google Home and Alexa. These two use HTTP for communication with third party device clouds.
I have implemented this for Google Home and after receiving the request to device cloud, the request is converted to MQTT. This MQTT request is then sent to smart home device. The device cloud waits for few seconds to receive reply from smart home device. If no reply is received within predefined time, it then sends failure HTTP response to Google Home else it sends the received reply.
Is there a better way to handle this? Since this is a commercial project I want to get this implemented in the correct way.