chore: Replace classpath scanner implementation (#60)

* chore - Replace classpath scanner implementation

* chore - Add replacement info for deprecated channel ref

Author: lorenzsimon

kotlin-asyncapi-core/src/main/kotlin/org/openfolder/kotlinasyncapi/model/channel/Channel.kt

@@ -22,7 +22,10 @@ class Channel {
     var parameters: ReferencableParametersMap? = null
     var bindings: Any? = null
 
-    @Deprecated("Usage of the \$ref property has been deprecated")
+    @Deprecated(
+        message = "Usage of the \$ref property has been deprecated",
+        replaceWith = ReplaceWith("Reference().ref()")
+    )
     fun ref(value: String): String =
         value.also { `$ref` = it }
 

kotlin-asyncapi-spring-web/pom.xml

@@ -39,6 +39,10 @@
             <groupId>io.swagger.core.v3</groupId>
             <artifactId>swagger-core</artifactId>
         </dependency>
+        <dependency>
+            <groupId>io.github.classgraph</groupId>
+            <artifactId>classgraph</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-web</artifactId>

kotlin-asyncapi-spring-web/src/main/kotlin/org/openfolder/kotlinasyncapi/springweb/AsyncApiAutoConfiguration.kt

@@ -101,8 +101,8 @@ internal open class AsyncApiAnnotationAutoConfiguration {
         ChannelProcessor()
 
     @Bean
-    open fun annotationScanner(context: ApplicationContext) =
-        DefaultAnnotationScanner(context)
+    open fun annotationScanner() =
+        DefaultAnnotationScanner()
 
     @Bean
     open fun annotationProvider(

kotlin-asyncapi-spring-web/src/main/kotlin/org/openfolder/kotlinasyncapi/springweb/context/annotation/AnnotationScanner.kt

@@ -1,9 +1,6 @@
 package org.openfolder.kotlinasyncapi.springweb.context.annotation
 
-import org.openfolder.kotlinasyncapi.annotation.AsyncApiAnnotation
-import org.springframework.context.ApplicationContext
-import org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider
-import org.springframework.core.type.filter.AnnotationTypeFilter
+import io.github.classgraph.ClassGraph
 import org.springframework.stereotype.Component
 import kotlin.reflect.KClass
 
@@ -12,16 +9,15 @@ internal interface AnnotationScanner {
 }
 
 @Component
-internal class DefaultAnnotationScanner(
-    private val context: ApplicationContext
-) : AnnotationScanner {
+internal class DefaultAnnotationScanner : AnnotationScanner {
     override fun scan(scanPackage: String, annotation: KClass<out Annotation>): List<KClass<*>> {
-        val classPathScanner = ClassPathScanningCandidateComponentProvider(false).also {
-            it.addIncludeFilter(AnnotationTypeFilter(AsyncApiAnnotation::class.java))
-        }
+        val packageClasses = ClassGraph()
+            .enableAllInfo()
+            .acceptPackages(scanPackage)
+            .scan()
 
-        return classPathScanner.findCandidateComponents(scanPackage).map {
-            Class.forName(it.beanClassName).kotlin
-        }.toList()
+        return packageClasses.getClassesWithAnnotation(annotation.java).standardClasses.map {
+            it.loadClass().kotlin
+        }
     }
 }

pom.xml

@@ -255,6 +255,11 @@
                 <artifactId>swagger-core</artifactId>
                 <version>2.2.8</version>
             </dependency>
+            <dependency>
+                <groupId>io.github.classgraph</groupId>
+                <artifactId>classgraph</artifactId>
+                <version>4.8.157</version>
+            </dependency>
             <dependency>
                 <groupId>org.jetbrains.kotlin</groupId>
                 <artifactId>kotlin-scripting-jvm-host</artifactId>