Make a config.json in root directory. Sample JSON is as follows.
{
"MONGO_HOST": "<MONGO_HOST>",
"USERNAME": "<USERNAME>",
"PASSWORD": "<PASSWORD>",
"NAME": "<NAME_OF_DATABASE>",
"RMQ_URL": "<RMQ_URL>",
"RMQ_QUEUE": "<QUEUE_NAME>",
"RMQ_EXCHANGE": "<EXCHANGE_NAME>",
"ROUTING_KEY": "<ROUTING_KEY_FOR_EXCHANGE>"
}