OpenTelemetry: Update the HTTP path and headers for logs and traces (#30934)

* OpenTelemetry: Update the HTTP path and headers for logs and traces

The intake now handles the standard OpenTelemetry HTTP paths without the need of additional header.

https://opentelemetry.io/docs/specs/otlp/#otlphttp-request

* cosmetics: replace spaces by tabs in golang

Author: trazfr

assets/scripts/config/regions.config.js

@@ -340,10 +340,10 @@ export default {
     gov: 'https://ip-ranges.ddog-gov.com'
   },
   otlp_trace_endpoint: {
-    us: 'https://trace.agent.datadoghq.com/api/v0.2/traces',
-    us3: 'https://trace.agent.us3.datadoghq.com/api/v0.2/traces',
-    us5: 'https://trace.agent.us5.datadoghq.com/api/v0.2/traces',
-    eu: 'https://trace.agent.datadoghq.eu/api/v0.2/traces',
+    us: 'https://trace.agent.datadoghq.com/v1/traces',
+    us3: 'https://trace.agent.us3.datadoghq.com/v1/traces',
+    us5: 'https://trace.agent.us5.datadoghq.com/v1/traces',
+    eu: 'https://trace.agent.datadoghq.eu/v1/traces',
     ap1: 'Datadog OTLP traces intake endpoint is not supported for AP1',
     ap2: 'Datadog OTLP traces intake endpoint is not supported for AP2'
   },
@@ -356,10 +356,10 @@ export default {
     ap2: 'Datadog OTLP metrics intake endpoint is not supported for AP2'
   },
   otlp_logs_endpoint: {
-    us: 'https://http-intake.logs.datadoghq.com/api/v2/logs',
-    us3: 'https://http-intake.logs.us3.datadoghq.com/api/v2/logs',
-    us5: 'https://http-intake.logs.us5.datadoghq.com/api/v2/logs',
-    eu: 'https://http-intake.logs.datadoghq.eu/api/v2/logs',
+    us: 'https://http-intake.logs.datadoghq.com/v1/logs',
+    us3: 'https://http-intake.logs.us3.datadoghq.com/v1/logs',
+    us5: 'https://http-intake.logs.us5.datadoghq.com/v1/logs',
+    eu: 'https://http-intake.logs.datadoghq.eu/v1/logs',
     ap1: 'Datadog OTLP logs intake endpoint is not supported for AP1',
     ap2: 'Datadog OTLP logs intake endpoint is not supported for AP2'
   },

content/en/opentelemetry/setup/agentless/logs.md

@@ -38,7 +38,7 @@ If you are using [OpenTelemetry automatic instrumentation][3], set the following
 ```shell
 export OTEL_EXPORTER_OTLP_LOGS_PROTOCOL="http/protobuf"
 export OTEL_EXPORTER_OTLP_LOGS_ENDPOINT="${YOUR_ENDPOINT}" // Replace this with the correct endpoint
-export OTEL_EXPORTER_OTLP_LOGS_HEADERS="dd-protocol=otlp,dd-api-key=${DD_API_KEY}"
+export OTEL_EXPORTER_OTLP_LOGS_HEADERS="dd-api-key=${DD_API_KEY}"
 ```
 
 #### Manual instrumentation
@@ -56,7 +56,6 @@ import io.opentelemetry.exporter.otlp.http.logs.OtlpHttpLogRecordExporter;
 
 OtlpHttpLogRecordExporter exporter = OtlpHttpLogRecordExporter.builder()
     .setEndpoint("${YOUR_ENDPOINT}") // Replace this with the correct endpoint
-    .addHeader("dd-protocol", "otlp")
     .addHeader("dd-api-key", System.getenv("DD_API_KEY"))
     .build();
 ```
@@ -71,10 +70,9 @@ import "go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp"
 logExporter, err := otlploghttp.New(
     ctx,
     otlploghttp.WithEndpointURL("${YOUR_ENDPOINT}"), // Replace this with the correct endpoint, minus the URL path
-    otlploghttp.WithURLPath("/api/v2/logs"),
+    otlploghttp.WithURLPath("/v1/logs"),
     otlploghttp.WithHeaders(
         map[string]string{
-            "dd-protocol": "otlp",
             "dd-api-key": os.Getenv("DD_API_KEY"),
         }),
 )
@@ -93,7 +91,6 @@ exporters:
   otlphttp:
     logs_endpoint: ${YOUR_ENDPOINT} // Replace this with the correct endpoint
     headers:
-      dd-protocol: "otlp"
       dd-api-key: ${env:DD_API_KEY}
 
 service:

content/en/opentelemetry/setup/agentless/traces.md

@@ -46,7 +46,7 @@ If you are using [OpenTelemetry automatic instrumentation][3], set the following
 ```shell
 export OTEL_EXPORTER_OTLP_TRACES_PROTOCOL="http/protobuf"
 export OTEL_EXPORTER_OTLP_TRACES_ENDPOINT="{{< region-param key="otlp_trace_endpoint" >}}"
-export OTEL_EXPORTER_OTLP_TRACES_HEADERS="dd-protocol=otlp,dd-api-key=${DD_API_KEY},dd-otlp-source=${YOUR_SITE}"
+export OTEL_EXPORTER_OTLP_TRACES_HEADERS="dd-api-key=${DD_API_KEY},dd-otlp-source=${YOUR_SITE}"
 ```
 
 <div class="alert alert-info">The value for <code>dd-otlp-source</code> should be provided to you by Datadog after being allowlisted for the intake endpoint. This is a specific identifier assigned to your organization.</div>
@@ -68,7 +68,6 @@ const { OTLPTraceExporter } = require('@opentelemetry/exporter-trace-otlp-proto'
 const exporter = new OTLPTraceExporter({
   url: '${YOUR_ENDPOINT}', // Replace this with the correct endpoint
   headers: {
-    'dd-protocol': 'otlp',
     'dd-api-key': process.env.DD_API_KEY,
     'dd-otel-span-mapping': '{span_name_as_resource_name: true}',
     'dd-otlp-source': '${YOUR_SITE}', // Replace with the specific value provided by Datadog for your organization
@@ -88,7 +87,6 @@ import io.opentelemetry.exporter.otlp.http.trace.OtlpHttpSpanExporter;
 
 OtlpHttpSpanExporter exporter = OtlpHttpSpanExporter.builder()
     .setEndpoint("${YOUR_ENDPOINT}") // Replace this with the correct endpoint
-    .addHeader("dd-protocol", "otlp")
     .addHeader("dd-api-key", System.getenv("DD_API_KEY"))
     .addHeader("dd-otel-span-mapping", "{span_name_as_resource_name: true}")
     .addHeader("dd-otlp-source", "${YOUR_SITE}") // Replace with the specific value provided by Datadog for your organization
@@ -108,13 +106,12 @@ import "go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp"
 traceExporter, err := otlptracehttp.New(
 	ctx,
 	otlptracehttp.WithEndpoint("${YOUR_ENDPOINT}"), // Replace this with the correct endpoint
-	otlptracehttp.WithURLPath("/api/v0.2/traces"),
+	otlptracehttp.WithURLPath("/v1/traces"),
 	otlptracehttp.WithHeaders(
 		map[string]string{
-			"dd-protocol": "otlp",
 			"dd-api-key": os.Getenv("DD_API_KEY"),
 			"dd-otel-span-mapping": "{span_name_as_resource_name: true}",
-      "dd-otlp-source": "${YOUR_SITE}", // Replace with the specific value provided by Datadog for your organization
+			"dd-otlp-source": "${YOUR_SITE}", // Replace with the specific value provided by Datadog for your organization
 		}),
 )
 ```
@@ -132,7 +129,6 @@ from opentelemetry.exporter.otlp.proto.http.trace_exporter import OTLPSpanExport
 exporter = OTLPSpanExporter(
     endpoint="${YOUR_ENDPOINT}", # Replace this with the correct endpoint
     headers={
-        "dd-protocol": "otlp",
         "dd-api-key": os.environ.get("DD_API_KEY"),
         "dd-otel-span-mapping": "{span_name_as_resource_name: true}",
         "dd-otlp-source": "${YOUR_SITE}" # Replace with the specific value provided by Datadog for your organization
@@ -179,7 +175,6 @@ exporters:
   otlphttp:
     traces_endpoint: {{< region-param key="otlp_trace_endpoint" >}}
     headers:
-      dd-protocol: "otlp"
       dd-api-key: ${env:DD_API_KEY}
       dd-otel-span-mapping: "{span_name_as_resource_name: false}"
       dd-otlp-source: "${YOUR_SITE}", # Replace with the specific value provided by Datadog for your organization