[chore] use mdatagen for batch processor (#9183)

Signed-off-by: Alex Boten <aboten@lightstep.com>

processor/batchprocessor/README.md

@@ -1,12 +1,16 @@
 # Batch Processor
 
+<!-- status autogenerated section -->
 | Status        |           |
-| ------------------------ | --------------------- |
-| Stability                | traces [beta]         |
-|                          | metrics [beta]        |
-|                          | logs [beta]           |
-| Supported pipeline types | traces, metrics, logs |
+| ------------- |-----------|
+| Stability     | [beta]: traces, metrics, logs   |
 | Distributions | [core], [contrib] |
+| Issues        | [![Open issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aopen%20label%3Aprocessor%2Fbatch%20&label=open&color=orange&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aopen+is%3Aissue+label%3Aprocessor%2Fbatch) [![Closed issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aclosed%20label%3Aprocessor%2Fbatch%20&label=closed&color=blue&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aclosed+is%3Aissue+label%3Aprocessor%2Fbatch) |
+
+[beta]: https://github.com/open-telemetry/opentelemetry-collector#beta
+[core]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol
+[contrib]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib
+<!-- end autogenerated section -->
 
 The batch processor accepts spans, metrics, or logs and places them into
 batches. Batching helps better compress the data and reduce the number of
@@ -109,7 +113,3 @@ metadata-key values.
 
 The number of batch processors currently in use is exported as the
 `otelcol_processor_batch_metadata_cardinality` metric.
-
-[beta]: https://github.com/open-telemetry/opentelemetry-collector#beta
-[contrib]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib
-[core]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol

processor/batchprocessor/factory.go

@@ -1,6 +1,8 @@
 // Copyright The OpenTelemetry Authors
 // SPDX-License-Identifier: Apache-2.0
 
+//go:generate mdatagen metadata.yaml
+
 package batchprocessor // import "go.opentelemetry.io/collector/processor/batchprocessor"
 
 import (
@@ -11,12 +13,10 @@ import (
 	"go.opentelemetry.io/collector/consumer"
 	"go.opentelemetry.io/collector/internal/obsreportconfig"
 	"go.opentelemetry.io/collector/processor"
+	"go.opentelemetry.io/collector/processor/batchprocessor/internal/metadata"
 )
 
 const (
-	// The value of "type" key in configuration.
-	typeStr = "batch"
-
 	defaultSendBatchSize = uint32(8192)
 	defaultTimeout       = 200 * time.Millisecond
 
@@ -29,11 +29,11 @@ const (
 // NewFactory returns a new factory for the Batch processor.
 func NewFactory() processor.Factory {
 	return processor.NewFactory(
-		typeStr,
+		metadata.Type,
 		createDefaultConfig,
-		processor.WithTraces(createTraces, component.StabilityLevelStable),
-		processor.WithMetrics(createMetrics, component.StabilityLevelStable),
-		processor.WithLogs(createLogs, component.StabilityLevelStable))
+		processor.WithTraces(createTraces, metadata.TracesStability),
+		processor.WithMetrics(createMetrics, metadata.MetricsStability),
+		processor.WithLogs(createLogs, metadata.LogsStability))
 }
 
 func createDefaultConfig() component.Config {

processor/batchprocessor/internal/metadata/generated_status.go

@@ -0,0 +1,25 @@
+// Code generated by mdatagen. DO NOT EDIT.
+
+package metadata
+
+import (
+	"go.opentelemetry.io/otel/metric"
+	"go.opentelemetry.io/otel/trace"
+
+	"go.opentelemetry.io/collector/component"
+)
+
+const (
+	Type             = "batch"
+	TracesStability  = component.StabilityLevelBeta
+	MetricsStability = component.StabilityLevelBeta
+	LogsStability    = component.StabilityLevelBeta
+)
+
+func Meter(settings component.TelemetrySettings) metric.Meter {
+	return settings.MeterProvider.Meter("otelcol/batch")
+}
+
+func Tracer(settings component.TelemetrySettings) trace.Tracer {
+	return settings.TracerProvider.Tracer("otelcol/batch")
+}

processor/batchprocessor/metadata.yaml

@@ -0,0 +1,7 @@
+type: batch
+
+status:
+  class: processor
+  stability:
+    beta: [traces, metrics, logs]
+  distributions: [core, contrib]

processor/batchprocessor/metrics.go

@@ -34,6 +34,7 @@ var (
 type trigger int
 
 const (
+	typeStr                = "batch"
 	triggerTimeout trigger = iota
 	triggerBatchSize
 )