The aim of the project is to effectively process and aggregate data to get an average aqi per country from a data file using MapReduce.

Make sure you are using go >= 1.9.

Configuration is made using env variables:

• DATA_FILE (default: "polData.json")
• MONGO_DB_NAME (default: "aq")
• MONGO_DB_COLLECTION (default: "measurements")
• MONGO_DB_URL - (default: "mongodb://localhost")
• QUERY_COUNTRY - set to query only by given country (optional)

go run main.go

QUERY_COUNTRY=Poland go run main.go

• cd tests
• go test