Disable normalization featuregate (#559)

Author: bryan-aguilar

README.md

@@ -7,6 +7,10 @@ As a downstream Repo of [opentelemetry-lambda](https://github.com/open-telemetry
 - Java-Agent layer [**aws-otel-java-agent-<amd64|arm64>-ver-1-24-0**](https://aws-otel.github.io/docs/getting-started/lambda/lambda-java-auto-instr) contains AWS Distro for OpenTelemetry Java Instrumentation `v1.24.0` and ADOT Collector for Lambda `v0.28.0`
 - Collector layer **aws-otel-collector-<amd64|arm64>-ver-0-74-0** contains ADOT Collector for Lambda `v0.28.0`. Compatible with [.NET](https://aws-otel.github.io/docs/getting-started/lambda/lambda-dotnet) and [Go](https://aws-otel.github.io/docs/getting-started/lambda/lambda-go) runtimes.
 
+## Notice: ADOT Collector v0.31.0 Breaking Change
+Users of the `prometheusremotewrite` exporter please reference GitHub Issue [Warning: ADOT Collector v0.31.0 breaking change](https://github.com/aws-observability/aws-otel-collector/issues/2043)
+for information on an upcoming breaking change.
+
 ## Sample Apps
 We provide [SAM and Terraform sample applications](sample-apps/) for AWS managed OpenTelemetry Lambda layers. You can play with these samples by the following:
 1. Install AWS Cli, AWS SAM, Terraform, and configure AWS credentials correctly.

adot/collector/lambdacomponents/default.go

@@ -18,6 +18,8 @@ package lambdacomponents
 //github.com/aws-observability/aws-otel-lambda/adot/collector/lambdacomponents
 
 import (
+	"log"
+
 	"github.com/open-telemetry/opentelemetry-collector-contrib/exporter/awsemfexporter"
 	"github.com/open-telemetry/opentelemetry-collector-contrib/exporter/awsxrayexporter"
 	"github.com/open-telemetry/opentelemetry-collector-contrib/exporter/prometheusremotewriteexporter"
@@ -27,6 +29,7 @@ import (
 	"go.opentelemetry.io/collector/exporter/otlpexporter"
 	"go.opentelemetry.io/collector/exporter/otlphttpexporter"
 	"go.opentelemetry.io/collector/extension"
+	"go.opentelemetry.io/collector/featuregate"
 	"go.opentelemetry.io/collector/otelcol"
 	"go.opentelemetry.io/collector/receiver"
 	"go.opentelemetry.io/collector/receiver/otlpreceiver"
@@ -73,5 +76,13 @@ func Components() (
 		Exporters:  exporters,
 	}
 
+	// TODO: remove after ADOT Collector v0.30.0 is released
+	if err := featuregate.GlobalRegistry().Set("pkg.translator.prometheus.NormalizeName", false); err != nil {
+		return otelcol.Factories{}, err
+	}
+	log.Printf("attn: users of the prometheusremotewrite exporter please refer to " +
+		"https://github.com/aws-observability/aws-otel-collector/issues/2043 in regards to an ADOT Collector v0.31.0 " +
+		"breaking change")
+
 	return factories, errs
 }