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opentelemetry-go/example/basic/main.go
rghetia b04db14146
WIP: Named tracer prototype (#227)
* named tracer prototype

* rename Manager to Provider.

* fix compile error after merge.

* rename Tracer method to GetTracer

* provider with options.

* update test.

* cleanup make circl-ci

* remove global config.

* some cleanup.

* use provider for bridge

* update propagation test.

* update examples and plugins.

* remove GlobalTracer methods.

* fix review comments.

* some more cleanup.

* remove unnecessary getTracer call in benchmark test.
2019-10-22 13:19:11 -07:00

97 lines
2.4 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/distributedcontext"
"go.opentelemetry.io/api/key"
"go.opentelemetry.io/api/metric"
"go.opentelemetry.io/api/trace"
)
var (
tracer = trace.GlobalProvider().GetTracer("ex.com/basic")
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 = distributedcontext.NewContext(ctx,
distributedcontext.Insert(fooKey.String("foo1")),
distributedcontext.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 Entries:
distributedcontext.NewContext(ctx,
distributedcontext.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()
}