mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2025-01-05 22:54:18 +02:00
be8fb0b4e2
* initial metrics work * rename cumulative to counter * rename bidirectional to nonmonotonic * rename unidirectional to monotonic * rename nonnegative to signed this changes the default semantics a bit - before the change measure could record negative values by default, now it can't. The specification draft currently specifies both NonNegative and Signed, but I think it's a mistake. * rename instrument to descriptor * license * rework measurement values * make measurement value a tagged union * simplify to one kind of metrics * add observers * change some interfaces to match the spec * keep integral measurement separate from floating ones * remove duplicated measurement type * add checking for options * reorder some fields and functions * rename a function to avoid confusion between the Handle type and the Measure type * drop disabled field from descriptor * add back typed API for metrics * make metric options type safe * merge alternatives into a single bool * make value kind name less stuttery * fix observation callback prototype * drop context parameter from NewHandle * drop useless parameter names * make descriptor an opaque struct * use a store helper * handle comment fixes * reword Alternate comment * drop the "any value" metrics * make measurement value simpler * document value stuff * add tests for values * docs * do not panic if there is no span ID in the event
97 lines
2.3 KiB
Go
97 lines
2.3 KiB
Go
// Copyright 2019, OpenTelemetry Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package main
|
|
|
|
import (
|
|
"context"
|
|
|
|
"go.opentelemetry.io/api/key"
|
|
"go.opentelemetry.io/api/metric"
|
|
"go.opentelemetry.io/api/tag"
|
|
"go.opentelemetry.io/api/trace"
|
|
)
|
|
|
|
var (
|
|
tracer = trace.GlobalTracer()
|
|
|
|
meter = metric.GlobalMeter() // TODO: should share resources ^^^?
|
|
|
|
fooKey = key.New("ex.com/foo")
|
|
barKey = key.New("ex.com/bar")
|
|
lemonsKey = key.New("ex.com/lemons")
|
|
anotherKey = key.New("ex.com/another")
|
|
|
|
oneMetric = metric.NewFloat64Gauge("ex.com/one",
|
|
metric.WithKeys(fooKey, barKey, lemonsKey),
|
|
metric.WithDescription("A gauge set to 1.0"),
|
|
)
|
|
|
|
measureTwo = metric.NewFloat64Measure("ex.com/two")
|
|
)
|
|
|
|
func main() {
|
|
ctx := context.Background()
|
|
|
|
ctx = tag.NewContext(ctx,
|
|
tag.Insert(fooKey.String("foo1")),
|
|
tag.Insert(barKey.String("bar1")),
|
|
)
|
|
|
|
commonLabels := meter.DefineLabels(ctx, lemonsKey.Int(10))
|
|
|
|
gauge := oneMetric.GetHandle(commonLabels)
|
|
|
|
measure := measureTwo.GetHandle(commonLabels)
|
|
|
|
err := tracer.WithSpan(ctx, "operation", func(ctx context.Context) error {
|
|
|
|
trace.CurrentSpan(ctx).AddEvent(ctx, "Nice operation!", key.New("bogons").Int(100))
|
|
|
|
trace.CurrentSpan(ctx).SetAttributes(anotherKey.String("yes"))
|
|
|
|
gauge.Set(ctx, 1)
|
|
|
|
meter.RecordBatch(
|
|
// Note: call-site variables added as context tags:
|
|
tag.NewContext(ctx,
|
|
tag.Insert(anotherKey.String("xyz"))),
|
|
commonLabels,
|
|
|
|
oneMetric.Measurement(1.0),
|
|
measureTwo.Measurement(2.0),
|
|
)
|
|
|
|
return tracer.WithSpan(
|
|
ctx,
|
|
"Sub operation...",
|
|
func(ctx context.Context) error {
|
|
trace.CurrentSpan(ctx).SetAttribute(lemonsKey.String("five"))
|
|
|
|
trace.CurrentSpan(ctx).AddEvent(ctx, "Sub span event")
|
|
|
|
measure.Record(ctx, 1.3)
|
|
|
|
return nil
|
|
},
|
|
)
|
|
})
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
// TODO: How to flush?
|
|
// loader.Flush()
|
|
}
|