feat: add asyncapi document version

README.md

@@ -724,6 +724,15 @@ you can specify your own header with the option `WithVersionHeaderKey`.
 vw := versioning.NewWrapper(broker, versioning.WithVersionHeaderKey("my-version-key"))
 ```
 
+#### Knowing generated version
+
+If you want to use the version of the AsyncAPI document used, you can access the constant
+`AsyncAPIVersion` that is generated with the types. It is generated as followed:
+
+```go
+const AsyncAPIVersion = "{{ .Info.Version }}"
+```
+
 ### AsyncAPI Extensions
 
 #### Schema Object extensions
@@ -764,7 +773,7 @@ These extension properties apply to "Schema Objects" in AsyncAPI spec.
         flag:
           type: integer
           x-go-type: mypackage.Flag
-          x-go-type-import: 
+          x-go-type-import:
             path: abc.xyz/repo/mypackage
   ```
 
@@ -791,7 +800,7 @@ These extension properties apply to "Schema Objects" in AsyncAPI spec.
         flag:
           type: integer
           x-go-type: alias.Flag
-          x-go-type-import: 
+          x-go-type-import:
             path: abc.xyz/repo/mypackage
             name: alias
   ```

pkg/codegen/generators/templates/types.tmpl

@@ -1,3 +1,6 @@
+// AsyncAPIVersion is the version of the used AsyncAPI document
+const AsyncAPIVersion = "{{ .Info.Version }}"
+
 // controller is the controller that will be used to communicate with the broker
 // It will be used internally by AppController and UserController
 type controller struct {

test/issues/114/asyncapi.yaml

@@ -0,0 +1,16 @@
+# Issue: https://github.com/lerenn/asyncapi-codegen/issues/114
+
+# AsyncAPI document version should be generated.
+
+# This test makes sure that it does.
+
+asyncapi: 2.6.0
+info:
+  title: Sample App
+  version: 1.2.3
+channels:
+  /status:
+    subscribe:
+      message:
+        payload:
+          type: string

test/issues/114/suite_test.go

@@ -0,0 +1,21 @@
+//go:generate go run ../../../cmd/asyncapi-codegen -g types -p issue114 -i ./asyncapi.yaml -o ./asyncapi.gen.go
+
+package issue114
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/suite"
+)
+
+func TestSuite(t *testing.T) {
+	suite.Run(t, new(Suite))
+}
+
+type Suite struct {
+	suite.Suite
+}
+
+func (suite *Suite) TestCorrectVersion() {
+	suite.Require().Equal("1.2.3", AsyncAPIVersion)
+}