The Leap assignment

Get started

Make sure you have JDK 11 and Maven installed

• Run mvn clean install
• Comment out @Disable in MeterFileProcessorIT and run the test
• You will find the generated reports in the target folder

Assumptions

• Each meter produces one file per day
• Each meter file can only have a single reading type
• FlowDirection of 1 means supplying to the net, 0 means subtracting
• A positive price means partner receives money, a negative prices means he has to pay
• The IntervalReadings can intersect, be disjointed or joining due to whatever reasons
• The specified unit price matches the unit type
• Timestamps are supplied in UTC

Design choices:

• Use Jackson for mapping as it is a performant library with nice features
• Use BigDecimal for currencies and durations for extra precision
• A flexible IntervalReading parser to accommodate for imperfect readings
• Use ZonedDateTime for hourly reports to account for timezones
• Round energy values and currencies to 2 decimals in the report