Fix server security array unmarshaling error

pkg/asyncapi/v3/server.go

@@ -14,7 +14,7 @@ type Server struct {
 	Title           string                     `json:"title"`
 	Summary         string                     `json:"summary"`
 	Variables       map[string]*ServerVariable `json:"variables"`
-	Security        *SecurityScheme            `json:"security"`
+	Security        []*SecurityScheme          `json:"security"`
 	Tags            []*Tag                     `json:"tags"`
 	ExternalDocs    *ExternalDocumentation     `json:"externalDocs"`
 	Bindings        *ServerBindings            `json:"bindings"`
@@ -42,7 +42,9 @@ func (srv *Server) generateMetadata(parentName, name string) {
 	}
 
 	// Generate security metadata
-	srv.Security.generateMetadata(srv.Name, "", nil)
+	for i, sec := range srv.Security {
+		sec.generateMetadata(srv.Name, "", &i)
+	}
 
 	// Generate tags metadata
 	for i, t := range srv.Tags {
@@ -57,6 +59,8 @@ func (srv *Server) generateMetadata(parentName, name string) {
 }
 
 // setDependencies sets dependencies between the different elements of the Server.
+//
+//nolint:cyclop
 func (srv *Server) setDependencies(spec Specification) error {
 	// Prevent modification if nil
 	if srv == nil {
@@ -76,8 +80,10 @@ func (srv *Server) setDependencies(spec Specification) error {
 	}
 
 	// Set security dependencies
-	if err := srv.Security.setDependencies(spec); err != nil {
-		return err
+	for _, sec := range srv.Security {
+		if err := sec.setDependencies(spec); err != nil {
+			return err
+		}
 	}
 
 	// Set tags dependencies

test/v3/issues/294/asyncapi.yaml

@@ -0,0 +1,53 @@
+asyncapi: 3.0.0
+info:
+  title: Server Security Array Test
+  version: 1.0.0
+  description: Test for parsing server security as array (issue #294)
+
+servers:
+  production:
+    host: mqtt.example.com
+    protocol: mqtt
+    description: Production MQTT broker
+    security:
+      - $ref: '#/components/securitySchemes/apiKey'
+      - $ref: '#/components/securitySchemes/oauth2'
+
+channels:
+  testChannel:
+    address: v3.issue294.test
+    messages:
+      testMessage:
+        $ref: '#/components/messages/TestMessage'
+
+operations:
+  testOperation:
+    action: send
+    channel:
+      $ref: '#/channels/testChannel'
+    messages:
+      - $ref: '#/channels/testChannel/messages/testMessage'
+
+components:
+  messages:
+    TestMessage:
+      payload:
+        type: object
+        properties:
+          message:
+            type: string
+
+  securitySchemes:
+    apiKey:
+      type: apiKey
+      in: user
+      description: API key authentication
+    oauth2:
+      type: oauth2
+      description: OAuth2 authentication
+      flows:
+        clientCredentials:
+          tokenUrl: https://example.com/oauth/token
+          availableScopes:
+            read: Read access
+            write: Write access

test/v3/issues/294/suite_test.go

@@ -0,0 +1,29 @@
+//go:generate go run ../../../../cmd/asyncapi-codegen -p issue294 -g types -i ./asyncapi.yaml -o ./asyncapi.gen.go
+
+package issue294
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/suite"
+)
+
+func TestSuite(t *testing.T) {
+	suite.Run(t, NewSuite())
+}
+
+type Suite struct {
+	suite.Suite
+}
+
+func NewSuite() *Suite {
+	return &Suite{}
+}
+
+func (suite *Suite) TestServerSecurityArrayParsing() {
+	// This test verifies that the AsyncAPI specification with server security
+	// defined as an array can be parsed without errors.
+	// The actual test is whether the code generation succeeds (via go:generate).
+	// If we reach this point, the parsing was successful.
+	suite.T().Log("Server security array parsing successful")
+}