add logging

Author: zmofei

server.json

@@ -6,13 +6,13 @@
     "url": "https://github.com/mapbox/mcp-server",
     "source": "github"
   },
-  "version": "0.7.0",
+  "version": "0.7.1",
   "packages": [
     {
       "registryType": "npm",
       "registryBaseUrl": "https://registry.npmjs.org",
       "runtimeHint": "npx",
-      "version": "0.7.0",
+      "version": "0.7.1",
       "identifier": "@mapbox/mcp-server",
       "transport": {
         "type": "stdio"

src/index.ts

@@ -66,7 +66,8 @@ const server = new McpServer(
   {
     capabilities: {
       tools: {},
-      resources: {}
+      resources: {},
+      logging: {}
     }
   }
 );
@@ -84,6 +85,7 @@ allResources.forEach((resource) => {
 async function main() {
   // Initialize OpenTelemetry tracing if not in test mode
   let tracingInitialized = false;
+  let tracingError: Error | null = null;
   if (process.env.NODE_ENV !== 'test' && !process.env.VITEST) {
     try {
       await initializeTracing();
@@ -122,14 +124,25 @@ async function main() {
         span.end();
       }
     } catch (error) {
-      // Tracing initialization failed, log it but continue without tracing
-      server.server.sendLoggingMessage({
-        level: 'warning',
-        data: `Failed to initialize tracing: ${error instanceof Error ? error.message : String(error)}`
-      });
+      // Store the error to log after connection is established
+      tracingError = error instanceof Error ? error : new Error(String(error));
     }
   }
 
+  // Start receiving messages on stdin and sending messages on stdout
+  const transport = new StdioServerTransport();
+  await server.connect(transport);
+
+  // Now that we're connected, send all the logging messages
+
+  // Log tracing initialization error if any
+  if (tracingError) {
+    server.server.sendLoggingMessage({
+      level: 'warning',
+      data: `Failed to initialize tracing: ${tracingError.message}`
+    });
+  }
+
   // Log tracing status and configuration
   if (tracingInitialized) {
     const tracingConfig = {
@@ -175,10 +188,6 @@ async function main() {
     level: 'debug',
     data: JSON.stringify(relevantEnvVars, null, 2)
   });
-
-  // Start receiving messages on stdin and sending messages on stdout
-  const transport = new StdioServerTransport();
-  await server.connect(transport);
 }
 
 // Ensure cleanup interval is cleared when the process exits