[processor/tailsampling] use generated status header (#22757)

This PR updates the component to generate the status table using mdatagen.

Linked issue: #21213

Signed-off-by: Alex Boten <[email protected]>

processor/tailsamplingprocessor/README.md

@@ -1,10 +1,17 @@
 # Tail Sampling Processor
 
-| Status                   |                                         |
-| ------------------------ |-----------------------------------------|
-| Stability                | [beta]                                  |
-| Supported pipeline types | traces                                  |
-| Distributions            | [contrib], [observiq], [splunk], [sumo] |
+<!-- status autogenerated section -->
+| Status        |           |
+| ------------- |-----------|
+| Stability     | [beta]: traces   |
+| Distributions | [contrib], [observiq], [splunk], [sumo] |
+
+[beta]: https://github.com/open-telemetry/opentelemetry-collector#beta
+[contrib]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib
+[observiq]: https://github.com/observIQ/observiq-otel-collector
+[splunk]: https://github.com/signalfx/splunk-otel-collector
+[sumo]: https://github.com/SumoLogic/sumologic-otel-collector
+<!-- end autogenerated section -->
 
 The tail sampling processor samples traces based on a set of defined policies. All spans for a given trace MUST be received by the same collector instance for effective sampling decisions.
 
@@ -207,10 +214,5 @@ As a rule of thumb, if you want to add probabilistic sampling and...
 
 ...you are already using the tail sampling processor: add the probabilistic sampling policy. You are already incurring the cost of running the tail sampling processor, adding the probabilistic policy will be negligible. Additionally, using the policy within the tail sampling processor will ensure traces that are sampled by other policies will not be dropped.
 
-[beta]: https://github.com/open-telemetry/opentelemetry-collector#beta
-[contrib]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib
 [probabilistic_sampling_processor]: ../probabilisticsamplerprocessor
 [loadbalancing_exporter]: ../../exporter/loadbalancingexporter
-[splunk]: https://github.com/signalfx/splunk-otel-collector
-[observiq]: https://github.com/observIQ/observiq-otel-collector
-[sumo]: https://github.com/SumoLogic/sumologic-otel-collector

processor/tailsamplingprocessor/config_test.go

@@ -14,6 +14,7 @@ import (
 	"go.opentelemetry.io/collector/confmap/confmaptest"
 
 	"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/ottl"
+	"github.com/open-telemetry/opentelemetry-collector-contrib/processor/tailsamplingprocessor/internal/metadata"
 )
 
 func TestLoadConfig(t *testing.T) {
@@ -25,7 +26,7 @@ func TestLoadConfig(t *testing.T) {
 	factory := NewFactory()
 	cfg := factory.CreateDefaultConfig()
 
-	sub, err := cm.Sub(component.NewIDWithName(typeStr, "").String())
+	sub, err := cm.Sub(component.NewIDWithName(metadata.Type, "").String())
 	require.NoError(t, err)
 	require.NoError(t, component.UnmarshalConfig(sub, cfg))
 

processor/tailsamplingprocessor/factory.go

@@ -1,6 +1,8 @@
 // Copyright The OpenTelemetry Authors
 // SPDX-License-Identifier: Apache-2.0
 
+//go:generate mdatagen metadata.yaml
+
 package tailsamplingprocessor // import "github.com/open-telemetry/opentelemetry-collector-contrib/processor/tailsamplingprocessor"
 
 import (
@@ -13,13 +15,8 @@ import (
 	"go.opentelemetry.io/collector/config/configtelemetry"
 	"go.opentelemetry.io/collector/consumer"
 	"go.opentelemetry.io/collector/processor"
-)
 
-const (
-	// The value of "type" Tail Sampling in configuration.
-	typeStr = "tail_sampling"
-	// The stability level of the processor.
-	stability = component.StabilityLevelBeta
+	"github.com/open-telemetry/opentelemetry-collector-contrib/processor/tailsamplingprocessor/internal/metadata"
 )
 
 var onceMetrics sync.Once
@@ -32,9 +29,9 @@ func NewFactory() processor.Factory {
 	})
 
 	return processor.NewFactory(
-		typeStr,
+		metadata.Type,
 		createDefaultConfig,
-		processor.WithTraces(createTracesProcessor, stability))
+		processor.WithTraces(createTracesProcessor, metadata.TracesStability))
 }
 
 func createDefaultConfig() component.Config {

processor/tailsamplingprocessor/factory_test.go

@@ -15,6 +15,8 @@ import (
 	"go.opentelemetry.io/collector/confmap/confmaptest"
 	"go.opentelemetry.io/collector/consumer/consumertest"
 	"go.opentelemetry.io/collector/processor/processortest"
+
+	"github.com/open-telemetry/opentelemetry-collector-contrib/processor/tailsamplingprocessor/internal/metadata"
 )
 
 func TestCreateDefaultConfig(t *testing.T) {
@@ -30,7 +32,7 @@ func TestCreateProcessor(t *testing.T) {
 	factory := NewFactory()
 	cfg := factory.CreateDefaultConfig()
 
-	sub, err := cm.Sub(component.NewIDWithName(typeStr, "").String())
+	sub, err := cm.Sub(component.NewIDWithName(metadata.Type, "").String())
 	require.NoError(t, err)
 	require.NoError(t, component.UnmarshalConfig(sub, cfg))
 

processor/tailsamplingprocessor/metadata.yaml

@@ -0,0 +1,7 @@
+type: tail_sampling
+
+status:
+  class: processor
+  stability:
+    beta: [traces]
+  distributions: [contrib, observiq, splunk, sumo]

processor/tailsamplingprocessor/metrics.go

@@ -9,6 +9,8 @@ import (
 	"go.opencensus.io/tag"
 	"go.opentelemetry.io/collector/config/configtelemetry"
 	"go.opentelemetry.io/collector/obsreport"
+
+	"github.com/open-telemetry/opentelemetry-collector-contrib/processor/tailsamplingprocessor/internal/metadata"
 )
 
 // Variables related to metrics specific to tail sampling.
@@ -44,62 +46,62 @@ func SamplingProcessorMetricViews(level configtelemetry.Level) []*view.View {
 	ageDistributionAggregation := view.Distribution(1, 2, 5, 10, 20, 30, 40, 50, 60, 90, 120, 180, 300, 600, 1800, 3600, 7200)
 
 	decisionLatencyView := &view.View{
-		Name:        obsreport.BuildProcessorCustomMetricName(typeStr, statDecisionLatencyMicroSec.Name()),
+		Name:        obsreport.BuildProcessorCustomMetricName(metadata.Type, statDecisionLatencyMicroSec.Name()),
 		Measure:     statDecisionLatencyMicroSec,
 		Description: statDecisionLatencyMicroSec.Description(),
 		TagKeys:     policyTagKeys,
 		Aggregation: latencyDistributionAggregation,
 	}
 	overallDecisionLatencyView := &view.View{
-		Name:        obsreport.BuildProcessorCustomMetricName(typeStr, statOverallDecisionLatencyUs.Name()),
+		Name:        obsreport.BuildProcessorCustomMetricName(metadata.Type, statOverallDecisionLatencyUs.Name()),
 		Measure:     statOverallDecisionLatencyUs,
 		Description: statOverallDecisionLatencyUs.Description(),
 		Aggregation: latencyDistributionAggregation,
 	}
 
 	traceRemovalAgeView := &view.View{
-		Name:        obsreport.BuildProcessorCustomMetricName(typeStr, statTraceRemovalAgeSec.Name()),
+		Name:        obsreport.BuildProcessorCustomMetricName(metadata.Type, statTraceRemovalAgeSec.Name()),
 		Measure:     statTraceRemovalAgeSec,
 		Description: statTraceRemovalAgeSec.Description(),
 		Aggregation: ageDistributionAggregation,
 	}
 	lateSpanArrivalView := &view.View{
-		Name:        obsreport.BuildProcessorCustomMetricName(typeStr, statLateSpanArrivalAfterDecision.Name()),
+		Name:        obsreport.BuildProcessorCustomMetricName(metadata.Type, statLateSpanArrivalAfterDecision.Name()),
 		Measure:     statLateSpanArrivalAfterDecision,
 		Description: statLateSpanArrivalAfterDecision.Description(),
 		Aggregation: ageDistributionAggregation,
 	}
 
 	countPolicyEvaluationErrorView := &view.View{
-		Name:        obsreport.BuildProcessorCustomMetricName(typeStr, statPolicyEvaluationErrorCount.Name()),
+		Name:        obsreport.BuildProcessorCustomMetricName(metadata.Type, statPolicyEvaluationErrorCount.Name()),
 		Measure:     statPolicyEvaluationErrorCount,
 		Description: statPolicyEvaluationErrorCount.Description(),
 		Aggregation: view.Sum(),
 	}
 
 	sampledTagKeys := []tag.Key{tagPolicyKey, tagSampledKey}
 	countTracesSampledView := &view.View{
-		Name:        obsreport.BuildProcessorCustomMetricName(typeStr, statCountTracesSampled.Name()),
+		Name:        obsreport.BuildProcessorCustomMetricName(metadata.Type, statCountTracesSampled.Name()),
 		Measure:     statCountTracesSampled,
 		Description: statCountTracesSampled.Description(),
 		TagKeys:     sampledTagKeys,
 		Aggregation: view.Sum(),
 	}
 
 	countTraceDroppedTooEarlyView := &view.View{
-		Name:        obsreport.BuildProcessorCustomMetricName(typeStr, statDroppedTooEarlyCount.Name()),
+		Name:        obsreport.BuildProcessorCustomMetricName(metadata.Type, statDroppedTooEarlyCount.Name()),
 		Measure:     statDroppedTooEarlyCount,
 		Description: statDroppedTooEarlyCount.Description(),
 		Aggregation: view.Sum(),
 	}
 	countTraceIDArrivalView := &view.View{
-		Name:        obsreport.BuildProcessorCustomMetricName(typeStr, statNewTraceIDReceivedCount.Name()),
+		Name:        obsreport.BuildProcessorCustomMetricName(metadata.Type, statNewTraceIDReceivedCount.Name()),
 		Measure:     statNewTraceIDReceivedCount,
 		Description: statNewTraceIDReceivedCount.Description(),
 		Aggregation: view.Sum(),
 	}
 	trackTracesOnMemorylView := &view.View{
-		Name:        obsreport.BuildProcessorCustomMetricName(typeStr, statTracesOnMemoryGauge.Name()),
+		Name:        obsreport.BuildProcessorCustomMetricName(metadata.Type, statTracesOnMemoryGauge.Name()),
 		Measure:     statTracesOnMemoryGauge,
 		Description: statTracesOnMemoryGauge.Description(),
 		Aggregation: view.LastValue(),