[log] Add debug logging to health endpoint handler

internal/server/health.go

@@ -3,8 +3,12 @@ package server
 import (
 	"encoding/json"
 	"net/http"
+
+	"github.com/githubnext/gh-aw-mcpg/internal/logger"
 )
 
+var logHealth = logger.New("server:health")
+
 // HealthResponse represents the JSON structure for the /health endpoint response
 // as defined in MCP Gateway Specification section 8.1.1
 type HealthResponse struct {
@@ -16,17 +20,22 @@ type HealthResponse struct {
 
 // BuildHealthResponse constructs a HealthResponse from the unified server's status
 func BuildHealthResponse(unifiedServer *UnifiedServer) HealthResponse {
+	logHealth.Print("Building health response")
+
 	// Get server status
 	serverStatus := unifiedServer.GetServerStatus()
+	logHealth.Printf("Retrieved status for %d servers", len(serverStatus))
 
 	// Determine overall health based on server status
 	overallStatus := "healthy"
-	for _, status := range serverStatus {
+	for serverName, status := range serverStatus {
 		if status.Status == "error" {
+			logHealth.Printf("Server error detected: server=%s, marking overall status as unhealthy", serverName)
 			overallStatus = "unhealthy"
 			break
 		}
 	}
+	logHealth.Printf("Overall health status determined: %s", overallStatus)
 
 	return HealthResponse{
 		Status:         overallStatus,
@@ -40,10 +49,13 @@ func BuildHealthResponse(unifiedServer *UnifiedServer) HealthResponse {
 // This function is used by both routed and unified modes to ensure consistent behavior
 func HandleHealth(unifiedServer *UnifiedServer) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		logHealth.Printf("Health check request: method=%s, remote=%s", r.Method, r.RemoteAddr)
+
 		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(http.StatusOK)
 
 		response := BuildHealthResponse(unifiedServer)
+		logHealth.Printf("Health response: status=%s, servers=%d", response.Status, len(response.Servers))
 		json.NewEncoder(w).Encode(response)
 	}
 }