mirror of
https://github.com/open-telemetry/opentelemetry-go.git
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a776e95c61
* Merge two event methods in span API There was an agreement to get rid of the Event interface and consolidate the two methods for adding events into one. See #57. * Eliminate the use of the Event interface There is no need for the SDK to provide the implementation of the Event interface - it is used nowhere. * Drop the Event interface It's dead code now. * Make it possible to override a finish timestamp through options Opentracing to opentelemetry bridge will certainly use this feature. * Obey the start time option * Add tests for events and custom start/end times
93 lines
2.3 KiB
Go
93 lines
2.3 KiB
Go
// Copyright 2019, OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"context"
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"go.opentelemetry.io/api/key"
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"go.opentelemetry.io/api/metric"
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"go.opentelemetry.io/api/registry"
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"go.opentelemetry.io/api/stats"
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"go.opentelemetry.io/api/tag"
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"go.opentelemetry.io/api/trace"
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)
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var (
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tracer = trace.GlobalTracer().
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WithComponent("example").
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WithResources(
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key.New("whatevs").String("yesss"),
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)
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meter = metric.GlobalMeter() // TODO: should share resources ^^^?
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fooKey = key.New("ex.com/foo", registry.WithDescription("A Foo var"))
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barKey = key.New("ex.com/bar", registry.WithDescription("A Bar var"))
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lemonsKey = key.New("ex.com/lemons", registry.WithDescription("A Lemons var"))
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anotherKey = key.New("ex.com/another")
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oneMetric = metric.NewFloat64Gauge("ex.com/one",
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metric.WithKeys(fooKey, barKey, lemonsKey),
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metric.WithDescription("A gauge set to 1.0"),
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)
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measureTwo = stats.NewMeasure("ex.com/two")
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)
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func main() {
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ctx := context.Background()
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ctx = tag.NewContext(ctx,
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tag.Insert(fooKey.String("foo1")),
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tag.Insert(barKey.String("bar1")),
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)
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gauge := meter.GetFloat64Gauge(
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ctx,
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oneMetric,
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lemonsKey.Int(10),
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)
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err := tracer.WithSpan(ctx, "operation", func(ctx context.Context) error {
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trace.CurrentSpan(ctx).AddEvent(ctx, "Nice operation!", key.New("bogons").Int(100))
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trace.CurrentSpan(ctx).SetAttributes(anotherKey.String("yes"))
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gauge.Set(ctx, 1)
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return tracer.WithSpan(
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ctx,
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"Sub operation...",
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func(ctx context.Context) error {
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trace.CurrentSpan(ctx).SetAttribute(lemonsKey.String("five"))
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trace.CurrentSpan(ctx).AddEvent(ctx, "Sub span event")
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stats.Record(ctx, measureTwo.M(1.3))
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return nil
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},
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)
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})
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if err != nil {
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panic(err)
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}
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// TODO: How to flush?
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// loader.Flush()
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}
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