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Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type ReqEvent ¶
type ReqEvent struct {
// Time is the time the request event happened.
Time time.Time
// Type is the type of the request event.
Type ReqEventType
// Key is the revision the event is associated with.
// +optional
Key types.NamespacedName
}
ReqEvent represents either an incoming or closed request.
type ReqEventType ¶
type ReqEventType int
ReqEventType denotes the type (incoming/closed) of a ReqEvent.
const ( // ReqIn represents an incoming request ReqIn ReqEventType = iota // ReqOut represents a finished request ReqOut // ProxiedIn represents an incoming request through a proxy. ProxiedIn // ProxiedOut represents a finished proxied request. ProxiedOut )
type RequestStats ¶
type RequestStats struct {
// contains filtered or unexported fields
}
RequestStats collects statistics about requests as they flow in and out of the system.
func NewRequestStats ¶
func NewRequestStats(startedAt time.Time) *RequestStats
NewRequestStats builds a RequestStats instance, started at the given time.
func (*RequestStats) HandleEvent ¶
func (s *RequestStats) HandleEvent(event ReqEvent)
HandleEvent handles an incoming or outgoing request event and updates the state accordingly.
func (*RequestStats) Report ¶
func (s *RequestStats) Report(now time.Time) RequestStatsReport
Report returns a RequestStatsReport relative to the given time. The state will be reset for another reporting cycle afterwards.
type RequestStatsReport ¶
type RequestStatsReport struct {
// AverageConcurrency is the average concurrency over the reporting timeframe.
// This is calculated via the utilization at a given concurrency. For example:
// 2 requests each taking 500ms over a 1s reporting window generate an average
// concurrency of 1.
AverageConcurrency float64
// AverageProxiedConcurrency is the average concurrency of all proxied requests.
// The same calculation as above applies.
AverageProxiedConcurrency float64
// RequestCount is the number of requests that arrived in the current reporting
// timeframe.
RequestCount float64
// ProxiedRequestCount is the number of proxied requests that arrived in the current
// reporting timeframe.
ProxiedRequestCount float64
}
RequestStatsReport are the metrics reported from the the request stats collector at a given time.
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