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Drop the gauge instrument (#537)

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* drop gauge instrument

* Restore the benchmark and stress test for lastvalue aggregator, but remove monotonic last-value support

* Rename gauge->lastvalue and remove remaining uses of the word 'gauge'

Co-authored-by: Krzesimir Nowak <krzesimir@kinvolk.io>
This commit is contained in:
Joshua MacDonald
2020-03-10 16:00:37 -07:00
committed by GitHub
parent fe0099fb3d
commit 9674c81cb7
33 changed files with 333 additions and 1048 deletions
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18
example/basic/main.go
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@ -73,10 +73,16 @@ func main() {
tracer := global.TraceProvider().Tracer("ex.com/basic")
meter := global.MeterProvider().Meter("ex.com/basic")
oneMetric := meter.NewFloat64Gauge("ex.com.one",
commonLabels := meter.Labels(lemonsKey.Int(10), key.String("A", "1"), key.String("B", "2"), key.String("C", "3"))
oneMetricCB := func(result metric.Float64ObserverResult) {
result.Observe(1, commonLabels)
}
oneMetric := meter.RegisterFloat64Observer("ex.com.one", oneMetricCB,
metric.WithKeys(fooKey, barKey, lemonsKey),
metric.WithDescription("A gauge set to 1.0"),
metric.WithDescription("An observer set to 1.0"),
)
defer oneMetric.Unregister()
measureTwo := meter.NewFloat64Measure("ex.com.two")
@ -87,11 +93,6 @@ func main() {
barKey.String("bar1"),
)
commonLabels := meter.Labels(lemonsKey.Int(10), key.String("A", "1"), key.String("B", "2"), key.String("C", "3"))
gauge := oneMetric.Bind(commonLabels)
defer gauge.Unbind()
measure := measureTwo.Bind(commonLabels)
defer measure.Unbind()
@ -101,14 +102,11 @@ func main() {
trace.SpanFromContext(ctx).SetAttributes(anotherKey.String("yes"))
gauge.Set(ctx, 1)
meter.RecordBatch(
// Note: call-site variables added as context Entries:
correlation.NewContext(ctx, anotherKey.String("xyz")),
commonLabels,
oneMetric.Measurement(1.0),
measureTwo.Measurement(2.0),
)