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Merge pull request #11 from matttproud/feature/include-instance-uptime 

Include instance uptime information in the stack.
This commit is contained in:
Matt T. Proud 2013-01-18 07:25:10 -08:00
parent d670ebaba5 4cab4a892e
commit c19702aca2
3 changed files with 80 additions and 45 deletions
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14
constants.go Normal file
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@ -0,0 +1,14 @@
/*
Copyright (c) 2013, Matt T. Proud
All rights reserved.
Use of this source code is governed by a BSD-style license that can be found in
the LICENSE file.
*/
package registry
var (
// NilLabels is a nil set of labels merely for end-user convenience.
NilLabels map[string]string
)

49
registry.go
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@ -11,7 +11,6 @@ package registry
import (
"encoding/base64"
"encoding/json"
"github.com/matttproud/golang_instrumentation/maths"
"github.com/matttproud/golang_instrumentation/metrics"
"log"
"net/http"
@ -21,48 +20,18 @@ import (
)
const (
jsonContentType = "application/json"
contentType = "Content-Type"
jsonSuffix = ".json"
authorization = "Authorization"
contentType = "Content-Type"
jsonContentType = "application/json"
jsonSuffix = ".json"
)
/*
Boilerplate metrics about the metrics reporting subservice. These are only
exposed if the DefaultRegistry's exporter is hooked into the HTTP request
handler.
*/
var requestCount *metrics.CounterMetric = &metrics.CounterMetric{}
var requestLatencyLogarithmicBuckets []float64 = metrics.LogarithmicSizedBucketsFor(0, 1000)
var requestLatencyEqualBuckets []float64 = metrics.EquallySizedBucketsFor(0, 1000, 10)
var requestLatencyLogarithmicAccumulating *metrics.Histogram = metrics.CreateHistogram(&metrics.HistogramSpecification{
Starts: requestLatencyLogarithmicBuckets,
BucketMaker: metrics.AccumulatingBucketBuilder(metrics.EvictAndReplaceWith(50, maths.Average), 1000),
ReportablePercentiles: []float64{0.01, 0.05, 0.5, 0.9, 0.99},
})
var requestLatencyEqualAccumulating *metrics.Histogram = metrics.CreateHistogram(&metrics.HistogramSpecification{
Starts: requestLatencyEqualBuckets,
BucketMaker: metrics.AccumulatingBucketBuilder(metrics.EvictAndReplaceWith(50, maths.Average), 1000),
ReportablePercentiles: []float64{0.01, 0.05, 0.5, 0.9, 0.99},
})
var requestLatencyLogarithmicTallying *metrics.Histogram = metrics.CreateHistogram(&metrics.HistogramSpecification{
Starts: requestLatencyLogarithmicBuckets,
BucketMaker: metrics.TallyingBucketBuilder,
ReportablePercentiles: []float64{0.01, 0.05, 0.5, 0.9, 0.99},
})
var requestLatencyEqualTallying *metrics.Histogram = metrics.CreateHistogram(&metrics.HistogramSpecification{
Starts: requestLatencyEqualBuckets,
BucketMaker: metrics.TallyingBucketBuilder,
ReportablePercentiles: []float64{0.01, 0.05, 0.5, 0.9, 0.99},
})
/*
This callback accumulates the microsecond duration of the reporting framework's
overhead such that it can be reported.
*/
var requestLatencyAccumulator metrics.CompletionCallback = func(duration time.Duration) {
microseconds := float64(int64(duration) / 1E3)
microseconds := float64(duration / time.Millisecond)
requestLatencyLogarithmicAccumulating.Add(microseconds)
requestLatencyEqualAccumulating.Add(microseconds)
@ -173,13 +142,3 @@ func (registry *Registry) YieldExporter() http.HandlerFunc {
metrics.InstrumentCall(instrumentable, requestLatencyAccumulator)
}
}
func init() {
nilBaseLabels := make(map[string]string)
DefaultRegistry.Register("requests_metrics_total", "A counter of the total requests made against the telemetry system.", nilBaseLabels, requestCount)
DefaultRegistry.Register("requests_metrics_latency_logarithmic_accumulating_microseconds", "A histogram of the response latency for requests made against the telemetry system.", nilBaseLabels, requestLatencyLogarithmicAccumulating)
DefaultRegistry.Register("requests_metrics_latency_equal_accumulating_microseconds", "A histogram of the response latency for requests made against the telemetry system.", nilBaseLabels, requestLatencyEqualAccumulating)
DefaultRegistry.Register("requests_metrics_latency_logarithmic_tallying_microseconds", "A histogram of the response latency for requests made against the telemetry system.", nilBaseLabels, requestLatencyLogarithmicTallying)
DefaultRegistry.Register("request_metrics_latency_equal_tallying_microseconds", "A histogram of the response latency for requests made against the telemetry system.", nilBaseLabels, requestLatencyEqualTallying)
}

62
telemetry.go Normal file
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@ -0,0 +1,62 @@
/*
Copyright (c) 2013, Matt T. Proud
All rights reserved.
Use of this source code is governed by a BSD-style license that can be found in
the LICENSE file.
*/
package registry
import (
"github.com/matttproud/golang_instrumentation/maths"
"github.com/matttproud/golang_instrumentation/metrics"
"time"
)
/*
Boilerplate metrics about the metrics reporting subservice. These are only
exposed if the DefaultRegistry's exporter is hooked into the HTTP request
handler.
*/
var (
// TODO(matt): Refresh these names to support namespacing.
requestCount *metrics.CounterMetric = &metrics.CounterMetric{}
requestLatencyLogarithmicBuckets []float64 = metrics.LogarithmicSizedBucketsFor(0, 1000)
requestLatencyEqualBuckets []float64 = metrics.EquallySizedBucketsFor(0, 1000, 10)
requestLatencyLogarithmicAccumulating *metrics.Histogram = metrics.CreateHistogram(&metrics.HistogramSpecification{
Starts: requestLatencyLogarithmicBuckets,
BucketMaker: metrics.AccumulatingBucketBuilder(metrics.EvictAndReplaceWith(50, maths.Average), 1000),
ReportablePercentiles: []float64{0.01, 0.05, 0.5, 0.9, 0.99},
})
requestLatencyEqualAccumulating *metrics.Histogram = metrics.CreateHistogram(&metrics.HistogramSpecification{
Starts: requestLatencyEqualBuckets,
BucketMaker: metrics.AccumulatingBucketBuilder(metrics.EvictAndReplaceWith(50, maths.Average), 1000),
ReportablePercentiles: []float64{0.01, 0.05, 0.5, 0.9, 0.99},
})
requestLatencyLogarithmicTallying *metrics.Histogram = metrics.CreateHistogram(&metrics.HistogramSpecification{
Starts: requestLatencyLogarithmicBuckets,
BucketMaker: metrics.TallyingBucketBuilder,
ReportablePercentiles: []float64{0.01, 0.05, 0.5, 0.9, 0.99},
})
requestLatencyEqualTallying *metrics.Histogram = metrics.CreateHistogram(&metrics.HistogramSpecification{
Starts: requestLatencyEqualBuckets,
BucketMaker: metrics.TallyingBucketBuilder,
ReportablePercentiles: []float64{0.01, 0.05, 0.5, 0.9, 0.99},
})
startTime *metrics.GaugeMetric = &metrics.GaugeMetric{}
)
func init() {
startTime.Set(float64(time.Now().Unix()))
DefaultRegistry.Register("requests_metrics_total", "A counter of the total requests made against the telemetry system.", NilLabels, requestCount)
DefaultRegistry.Register("requests_metrics_latency_logarithmic_accumulating_microseconds", "A histogram of the response latency for requests made against the telemetry system.", NilLabels, requestLatencyLogarithmicAccumulating)
DefaultRegistry.Register("requests_metrics_latency_equal_accumulating_microseconds", "A histogram of the response latency for requests made against the telemetry system.", NilLabels, requestLatencyEqualAccumulating)
DefaultRegistry.Register("requests_metrics_latency_logarithmic_tallying_microseconds", "A histogram of the response latency for requests made against the telemetry system.", NilLabels, requestLatencyLogarithmicTallying)
DefaultRegistry.Register("request_metrics_latency_equal_tallying_microseconds", "A histogram of the response latency for requests made against the telemetry system.", NilLabels, requestLatencyEqualTallying)
DefaultRegistry.Register("instance_start_time_seconds", "The time at which the current instance started (UTC).", NilLabels, startTime)
}