Move flags and metrics into main()
Fixes #933. Signed-off-by: beorn7 <beorn@grafana.com>
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@ -29,47 +29,45 @@ import (
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"github.com/prometheus/client_golang/prometheus/promhttp"
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)
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var (
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addr = flag.String("listen-address", ":8080", "The address to listen on for HTTP requests.")
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uniformDomain = flag.Float64("uniform.domain", 0.0002, "The domain for the uniform distribution.")
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normDomain = flag.Float64("normal.domain", 0.0002, "The domain for the normal distribution.")
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normMean = flag.Float64("normal.mean", 0.00001, "The mean for the normal distribution.")
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oscillationPeriod = flag.Duration("oscillation-period", 10*time.Minute, "The duration of the rate oscillation period.")
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)
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var (
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// Create a summary to track fictional interservice RPC latencies for three
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// distinct services with different latency distributions. These services are
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// differentiated via a "service" label.
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rpcDurations = prometheus.NewSummaryVec(
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prometheus.SummaryOpts{
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Name: "rpc_durations_seconds",
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Help: "RPC latency distributions.",
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Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
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},
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[]string{"service"},
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func main() {
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var (
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addr = flag.String("listen-address", ":8080", "The address to listen on for HTTP requests.")
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uniformDomain = flag.Float64("uniform.domain", 0.0002, "The domain for the uniform distribution.")
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normDomain = flag.Float64("normal.domain", 0.0002, "The domain for the normal distribution.")
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normMean = flag.Float64("normal.mean", 0.00001, "The mean for the normal distribution.")
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oscillationPeriod = flag.Duration("oscillation-period", 10*time.Minute, "The duration of the rate oscillation period.")
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)
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flag.Parse()
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var (
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// Create a summary to track fictional interservice RPC latencies for three
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// distinct services with different latency distributions. These services are
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// differentiated via a "service" label.
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rpcDurations = prometheus.NewSummaryVec(
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prometheus.SummaryOpts{
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Name: "rpc_durations_seconds",
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Help: "RPC latency distributions.",
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Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001},
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},
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[]string{"service"},
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)
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// The same as above, but now as a histogram, and only for the normal
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// distribution. The buckets are targeted to the parameters of the
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// normal distribution, with 20 buckets centered on the mean, each
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// half-sigma wide.
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rpcDurationsHistogram = prometheus.NewHistogram(prometheus.HistogramOpts{
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Name: "rpc_durations_histogram_seconds",
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Help: "RPC latency distributions.",
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Buckets: prometheus.LinearBuckets(*normMean-5**normDomain, .5**normDomain, 20),
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})
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)
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// The same as above, but now as a histogram, and only for the normal
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// distribution. The buckets are targeted to the parameters of the
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// normal distribution, with 20 buckets centered on the mean, each
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// half-sigma wide.
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rpcDurationsHistogram = prometheus.NewHistogram(prometheus.HistogramOpts{
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Name: "rpc_durations_histogram_seconds",
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Help: "RPC latency distributions.",
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Buckets: prometheus.LinearBuckets(*normMean-5**normDomain, .5**normDomain, 20),
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})
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)
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func init() {
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// Register the summary and the histogram with Prometheus's default registry.
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prometheus.MustRegister(rpcDurations)
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prometheus.MustRegister(rpcDurationsHistogram)
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// Add Go module build info.
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prometheus.MustRegister(prometheus.NewBuildInfoCollector())
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}
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func main() {
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flag.Parse()
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start := time.Now()
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