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opentelemetry-go/sdk/trace/sampling_test.go
Anthony Mirabella 7a1cbbc191
Update Samplers to conform to Spec (#531)
* Refactor SDK Sampler API to conform to Spec

* Sampler is now an interface rather than a function type
* SamplingParameters include the span Kind, Attributes, and Links
* SamplingResult includes a SamplingDecision with three possible values, as well as Attributes

* Add attributes retruned from a Sampler to the span

* Add SpanKind, Attributes, and Links to API Sampler.ShouldSample() parameters

* Drop "Get" from sdk Sampler.GetDescription to match api Sampler

* Make spanID parameter in API Sampler interface a core.SpanID

* Fix types and printf format per PR feedback from krnowak

* Ensure unit test error messages reflect new reality

Co-authored-by: Joshua MacDonald <jmacd@users.noreply.github.com>
2020-03-10 08:25:11 -07:00

50 lines
1.7 KiB
Go

// Copyright 2020, 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 trace_test
import (
"testing"
"go.opentelemetry.io/otel/api/core"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
)
func TestAlwaysParentSampleWithParentSampled(t *testing.T) {
sampler := sdktrace.AlwaysParentSample()
traceID, _ := core.TraceIDFromHex("4bf92f3577b34da6a3ce929d0e0e4736")
spanID, _ := core.SpanIDFromHex("00f067aa0ba902b7")
parentCtx := core.SpanContext{
TraceID: traceID,
SpanID: spanID,
TraceFlags: core.TraceFlagsSampled,
}
if sampler.ShouldSample(sdktrace.SamplingParameters{ParentContext: parentCtx}).Decision != sdktrace.RecordAndSampled {
t.Error("Sampling decision should be RecordAndSampled")
}
}
func TestAlwaysParentSampleWithParentNotSampled(t *testing.T) {
sampler := sdktrace.AlwaysParentSample()
traceID, _ := core.TraceIDFromHex("4bf92f3577b34da6a3ce929d0e0e4736")
spanID, _ := core.SpanIDFromHex("00f067aa0ba902b7")
parentCtx := core.SpanContext{
TraceID: traceID,
SpanID: spanID,
}
if sampler.ShouldSample(sdktrace.SamplingParameters{ParentContext: parentCtx}).Decision != sdktrace.NotRecord {
t.Error("Sampling decision should be NotRecord")
}
}