chore: added granular otel apps

example-apps/otel/serverless-instana-format-grpc/tracing.js

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+/*
+ * (c) Copyright IBM Corp. 2026
+ */
+
+'use strict';
+
+const process = require('process');
+require('@opentelemetry/api');
+const opentelemetry = require('@opentelemetry/sdk-node');
+const { getNodeAutoInstrumentations } = require('@opentelemetry/auto-instrumentations-node');
+const { Resource } = require('@opentelemetry/resources');
+const { SemanticResourceAttributes } = require('@opentelemetry/semantic-conventions');
+
+// Require the Instana OpenTelemetry Exporter
+const { InstanaExporter } = require('@instana/opentelemetry-exporter');
+
+// Instantiate the Instana Exporter.
+// Make sure to provide the agent key and the serverless endpoint URL via the following environment variables:
+// * INSTANA_AGENT_KEY
+// * INSTANA_ENDPOINT_URL
+const instanaTraceExporter = new InstanaExporter();
+
+/*
+ * If you have not provided the agent key and the serverless endpoint URL via environment variables:
+ * const instanaTraceExporter = new InstanaExporter({ agentKey: 'agent_key', endpointUrl: 'endpoint_url' });
+ */
+
+const nodeAutoInstrumentations = getNodeAutoInstrumentations();
+
+const sdk = new opentelemetry.NodeSDK({
+  traceExporter: instanaTraceExporter,
+  instrumentations: [nodeAutoInstrumentations]
+});
+
+sdk.start();

example-apps/otel/serverless-otlp-format-grpc/README.md

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+# Serverless OpenTelemetry OTLP traces and metrics
+
+## Requirements
+
+- Choose an [OTLP acceptor endpoint](https://www.ibm.com/docs/en/instana-observability/current?topic=instana-backend#endpoints-of-the-instana-backend-otlp-acceptor).
+- Read the x-instana-key from the agent installation docs of the target SaaS instance.
+
+## Installation
+
+```sh
+npm install @grpc/grpc-js --save
+npm install @opentelemetry/api --save
+npm install @opentelemetry/auto-instrumentations-node --save
+npm install @opentelemetry/exporter-metrics-otlp-grpc --save
+npm install @opentelemetry/exporter-trace-otlp-grpc --save
+npm install @opentelemetry/host-metrics --save
+npm install @opentelemetry/instrumentation-kafkajs --save
+npm install @opentelemetry/sdk-metrics --save
+npm install @opentelemetry/sdk-node --save
+npm install express --save
+npm install kafkajs --save
+```
+
+## Start
+
+```sh
+INSTANA_KEY=xxx OTEL_EXPORTER_OTLP_ENDPOINT=yyy OTEL_LOG_LEVEL=debug OTEL_SERVICE_NAME=node-otlp-grpc npm start
+
+node kafka-consumer.js
+```