const InfiniteQPS = 1 << 16

type HTTPBenchmark struct {
	// Name is the name of the benchmark. It is used as a prefix for all
	// benchstat output metrics.
	Name string

	// Cluster is the test cluster.
	Cluster *testcluster.TestCluster

	// Namespace is the benchmark namespace where pods are created.
	Namespace *testcluster.Namespace

	// Service is a Kubernetes service pointing to the HTTP server.
	Service *v13.Service

	// Port is the port that the HTTP server is bound to.
	Port int

	// Path is the HTTP path that the benchmark should use in its requests.
	// It should start by "/", e.g. "/index.html".
	Path string

	// Timeout is the maximum allowable duration of requests for Path.
	Timeout time.Duration

	// Rounds is the set of rounds to run the benchmark for. Must be non-empty.
	Rounds []Round

	// WantPercentiles is the list of percentiles to report.
	WantPercentiles []int
}

type MetricType int

const (
	Latency MetricType = iota
	RequestsPerSecond
	BytesPerSecond
)

type Round struct {
	// NumThreads is the number of concurrent threads and connections to make.
	NumThreads int

	// TargetQPS is the aggregate load on the server that will be spread across
	// the `NumThreads` threads.
	TargetQPS int

	// Duration is the total duration of the round. It should be longer than 10s
	// as wrk2 uses the first 10 seconds as calibration period.
	Duration time.Duration

	// If set, only report the metric types listed here.
	OnlyReport []MetricType
}