this repo has no description
Track whether or not a query is typeahead in metrics
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-8
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search/metrics.go
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search/metrics.go
···
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Name: "http_request_size_bytes",
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Help: "A histogram of request sizes for requests.",
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Buckets: prometheus.ExponentialBuckets(100, 10, 8),
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}, []string{"code", "method", "path"})
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}, []string{"code", "method", "path", "extras"})
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var reqDur = promauto.NewHistogramVec(prometheus.HistogramOpts{
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Name: "http_request_duration_seconds",
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Help: "A histogram of latencies for requests.",
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Buckets: prometheus.ExponentialBuckets(0.0001, 2, 18),
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}, []string{"code", "method", "path"})
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}, []string{"code", "method", "path", "extras"})
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var reqCnt = promauto.NewCounterVec(prometheus.CounterOpts{
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Name: "http_requests_total",
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Help: "A counter for requests to the wrapped handler.",
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}, []string{"code", "method", "path"})
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}, []string{"code", "method", "path", "extras"})
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var resSz = promauto.NewHistogramVec(prometheus.HistogramOpts{
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Name: "http_response_size_bytes",
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Help: "A histogram of response sizes for requests.",
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Buckets: prometheus.ExponentialBuckets(100, 10, 8),
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}, []string{"code", "method", "path"})
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}, []string{"code", "method", "path", "extras"})
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// MetricsMiddleware defines handler function for metrics middleware
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func MetricsMiddleware(next echo.HandlerFunc) echo.HandlerFunc {
···
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responseSize := float64(c.Response().Size)
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reqDur.WithLabelValues(statusStr, method, path).Observe(elapsed)
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reqCnt.WithLabelValues(statusStr, method, path).Inc()
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reqSz.WithLabelValues(statusStr, method, path).Observe(float64(requestSize))
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resSz.WithLabelValues(statusStr, method, path).Observe(responseSize)
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// Custom label for Typeahead search queries
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isTypeahead := c.QueryParam("typeahead") == "true"
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labels := []string{statusStr, method, path}
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if isTypeahead {
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labels = append(labels, "typeahead")
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} else {
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labels = append(labels, "")
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}
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reqDur.WithLabelValues(labels...).Observe(elapsed)
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reqCnt.WithLabelValues(labels...).Inc()
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reqSz.WithLabelValues(labels...).Observe(float64(requestSize))
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resSz.WithLabelValues(labels...).Observe(responseSize)
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return err
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}