mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2025-01-26 03:52:03 +02:00
c0fb8dec4c
* Update RegisterCallback and Callback decls RegisterCallback accept variadic Asynchronous instruments instead of a slice. Callback accept an observation result recorder to ensure instruments that are observed by a callback. * Update global impl * Update noop impl * Update SDK impl * Fix prometheus example * Fix metric API example_test * Remove unused registerabler * Rename ObservationRecorder to MultiObserver * Update Callback documentation about MultiObserver * Remove the Observe method from async inst * Revert to iface for Observers * Fix async inst docs * Update global async delegate race test * Restore removed observe doc * Remove TODO * Remove stale comment * Update changelog
63 lines
1.7 KiB
Go
63 lines
1.7 KiB
Go
// Copyright The 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 instrument // import "go.opentelemetry.io/otel/metric/instrument"
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import (
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"context"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/metric/unit"
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)
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func TestInt64ObserverOptions(t *testing.T) {
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const (
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token int64 = 43
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desc = "Instrument description."
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uBytes = unit.Bytes
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)
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got := NewInt64ObserverConfig(
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WithDescription(desc),
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WithUnit(uBytes),
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WithInt64Callback(func(_ context.Context, obsrv Int64Observer) error {
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obsrv.Observe(token)
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return nil
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}),
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)
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assert.Equal(t, desc, got.Description(), "description")
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assert.Equal(t, uBytes, got.Unit(), "unit")
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// Functions are not comparable.
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cBacks := got.Callbacks()
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require.Len(t, cBacks, 1, "callbacks")
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o := &int64Observer{}
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err := cBacks[0](context.Background(), o)
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require.NoError(t, err)
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assert.Equal(t, token, o.got, "callback not set")
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}
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type int64Observer struct {
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Asynchronous
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got int64
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}
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func (o *int64Observer) Observe(v int64, _ ...attribute.KeyValue) {
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o.got = v
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}
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