[processor/attributes] Configuration options meant for traces-only should not pass validation on metrics.

[atoulme]

Component(s)

processor/attributes

What happened?

Description

The attributes processor offers configuration options specific to traces or metrics.

When using a trace-only configuration option on the attributes processor with a metrics pipeline, validation passes and the option is silently ignored.

Steps to Reproduce

Use this attributes processor definition with a metrics pipeline:

attributes/servicesmetrics:
  include:
    match_type: strict
    services:
      - foo
  actions:
    - key: service.name
      value: bar
      action: insert

func TestMetricsUsedWithServices(t *testing.T) {
	cm, err := confmaptest.LoadConf(filepath.Join("testdata", "config.yaml"))
	require.NoError(t, err)

	factory := NewFactory()
	cfg := factory.CreateDefaultConfig()

	sub, err := cm.Sub("attributes/servicesmetrics")

	require.NoError(t, err)
	require.NoError(t, sub.Unmarshal(cfg))

	assert.NoError(t, component.ValidateConfig(cfg))

	sink := consumertest.MetricsSink{}

	p, err := NewFactory().CreateMetrics(context.Background(), processortest.NewNopSettings(), cfg, &sink)
	require.NoError(t, err)

	require.NoError(t, p.Start(context.Background(), componenttest.NewNopHost()))

	m := pmetric.NewMetrics()
	subM := m.ResourceMetrics().AppendEmpty().ScopeMetrics().AppendEmpty().Metrics().AppendEmpty()
	subM.SetName("myMetric")
	subM.SetEmptyGauge().DataPoints().AppendEmpty().SetDoubleValue(1.0)

	require.NoError(t, p.ConsumeMetrics(context.Background(), m))

	newSubM := sink.AllMetrics()[0].ResourceMetrics().At(0).ScopeMetrics().At(0).Metrics().At(0)

	newSubM.Gauge().DataPoints().At(0).Attributes().Range(func(k string, v pcommon.Value) bool {
		t.Logf("Key: %q, Value: %v", k, v.AsRaw())
		return true
	})
	assert.Equal(t, 0, newSubM.Gauge().DataPoints().At(0).Attributes().Len())
}

Expected Result

Validation should have failed or at least the attribute should not have been set.

Actual Result

The condition is ignored and the attribute is set.

=== RUN   TestMetricsUsedWithServices
    attributes_metric_test.go:497: Key: "service.name", Value: bar
    attributes_metric_test.go:500: 
        	Error Trace: attributes_metric_test.go:500
        	Error:      	Not equal: 
        	            	expected: 0
        	            	actual  : 1
        	Test:       	TestMetricsUsedWithServices
--- FAIL: TestMetricsUsedWithServices (0.00s)

Collector version

0.112.0

Environment information

Environment

OS: (e.g., "Ubuntu 20.04")
Compiler(if manually compiled): (e.g., "go 14.2")

OpenTelemetry Collector configuration

No response

Log output

No response

Additional context

No response

[github-actions]

Pinging code owners:

• processor/attributes: @boostchicken

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