refactor: implement OpenTelemetry debugging

Author: rui-typelets

src/logs-setup.ts

@@ -7,11 +7,30 @@ import { ATTR_SERVICE_NAME } from "@opentelemetry/semantic-conventions";
 
 // Only set up logs if OTEL is configured
 if (process.env.OTEL_EXPORTER_OTLP_ENDPOINT) {
+  console.log("🔍 OTEL Debug - Endpoint:", process.env.OTEL_EXPORTER_OTLP_ENDPOINT);
+  console.log("🔍 OTEL Debug - Headers set:", !!process.env.OTEL_EXPORTER_OTLP_HEADERS);
+  console.log("🔍 OTEL Debug - Service name:", process.env.OTEL_SERVICE_NAME);
+
   const resource = resourceFromAttributes({
     [ATTR_SERVICE_NAME]: process.env.OTEL_SERVICE_NAME || "typelets-api",
   });
 
   const logExporter = new OTLPLogExporter();
+
+  // Add error handling to the exporter
+  const originalExport = logExporter.export.bind(logExporter);
+  logExporter.export = (logs, resultCallback) => {
+    console.log(`📤 Attempting to export ${logs.length} log records to OTLP...`);
+    originalExport(logs, (result) => {
+      if (result.code === 0) {
+        console.log(`✅ Successfully exported ${logs.length} logs to Grafana`);
+      } else {
+        console.error(`❌ Failed to export logs:`, result.error);
+      }
+      resultCallback(result);
+    });
+  };
+
   const logRecordProcessor = new BatchLogRecordProcessor(logExporter);
 
   const loggerProvider = new LoggerProvider({