chore: simplify the code

Author: sp6370

examples/express/package.json

@@ -28,15 +28,14 @@
   },
   "homepage": "https://github.com/open-telemetry/opentelemetry-js-contrib/tree/main/examples/express#readme",
   "dependencies": {
-    "@opentelemetry/api": "^1.3.0",
-    "@opentelemetry/exporter-jaeger": "^1.18.1",
-    "@opentelemetry/exporter-trace-otlp-proto": "^0.48.0",
-    "@opentelemetry/instrumentation": "^0.48.0",
-    "@opentelemetry/instrumentation-express": "^0.34.1",
-    "@opentelemetry/instrumentation-http": "^0.48.0",
-    "@opentelemetry/resources": "^1.18.1",
-    "@opentelemetry/sdk-trace-base": "^1.18.1",
-    "@opentelemetry/sdk-trace-node": "^1.18.1",
+    "@opentelemetry/api": "^1.9.0",
+    "@opentelemetry/exporter-trace-otlp-proto": "^0.54.2",
+    "@opentelemetry/instrumentation": "^0.54.2",
+    "@opentelemetry/instrumentation-express": "^0.44.0",
+    "@opentelemetry/instrumentation-http": "^0.54.2",
+    "@opentelemetry/resources": "^1.27.0",
+    "@opentelemetry/sdk-trace-base": "^1.27.0",
+    "@opentelemetry/sdk-trace-node": "^1.27.0",
     "@opentelemetry/semantic-conventions": "^1.27.0",
     "axios": "^1.6.0",
     "cross-env": "^7.0.3",

examples/express/src/tracer.ts

@@ -12,11 +12,10 @@ import { registerInstrumentations } from '@opentelemetry/instrumentation';
 import { NodeTracerProvider } from '@opentelemetry/sdk-trace-node';
 import { Sampler, AlwaysOnSampler, SimpleSpanProcessor } from '@opentelemetry/sdk-trace-base';
 import { OTLPTraceExporter } from '@opentelemetry/exporter-trace-otlp-proto';
-import { ZipkinExporter } from '@opentelemetry/exporter-zipkin';
 import { Resource } from '@opentelemetry/resources';
 import { SEMRESATTRS_SERVICE_NAME, SEMATTRS_HTTP_ROUTE } from '@opentelemetry/semantic-conventions';
 
-const Exporter = (process.env.EXPORTER || '').toLowerCase().startsWith('z') ? ZipkinExporter : OTLPTraceExporter;
+const Exporter = OTLPTraceExporter;
 import { ExpressInstrumentation } from '@opentelemetry/instrumentation-express';
 const { HttpInstrumentation } = require('@opentelemetry/instrumentation-http');
 
@@ -36,9 +35,7 @@ export const setupTracing = (serviceName: string) => {
     ],
   });
 
-  const exporter = new Exporter({
-    serviceName,
-  });
+  const exporter = new Exporter({});
 
   provider.addSpanProcessor(new SimpleSpanProcessor(exporter));