BuildDurationService - Capturing build time

BuildDurationService.kt

abstract class BuildDurationService : BuildService<BuildServiceParameters.None>, BuildOperationListener, AutoCloseable {

    var buildDuration: Long? = null

    override fun started(p0: BuildOperationDescriptor, p1: OperationStartEvent) {}

    override fun progress(p0: OperationIdentifier, p1: OperationProgressEvent) {}

    override fun finished(buildOperationDescriptor: BuildOperationDescriptor, operationFinishEvent: OperationFinishEvent) {
        if (buildOperationDescriptor.details is RunRootBuildWorkBuildOperationType.Details) {
            val details = buildOperationDescriptor.details as RunRootBuildWorkBuildOperationType.Details?
                
            details?.buildStartTime?.let { buildStartTime ->
                buildDuration = System.currentTimeMillis() - buildStartTime
            }
        }
    }
}