consul/lib/rtt.go

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package lib
import (
"math"
"time"
"github.com/hashicorp/serf/coordinate"
)
// ComputeDistance returns the distance between the two network coordinates in
// seconds. If either of the coordinates is nil then this will return positive
// infinity.
func ComputeDistance(a *coordinate.Coordinate, b *coordinate.Coordinate) float64 {
if a == nil || b == nil {
return math.Inf(1.0)
}
return a.DistanceTo(b).Seconds()
}
// GenerateCoordinate creates a new coordinate with the given distance from the
// origin. This should only be used for tests.
func GenerateCoordinate(rtt time.Duration) *coordinate.Coordinate {
coord := coordinate.NewCoordinate(coordinate.DefaultConfig())
coord.Vec[0] = rtt.Seconds()
coord.Height = 0
return coord
}