Add triggermesh parameter and clean up mule to boot integration

Author: cab105

applications/spring-shell/src/main/resources/application.properties

@@ -18,6 +18,7 @@ spring.profiles.active=default, core
 spring.application.name=spring-boot-migrator
 # toggle support for git to sync and auto-commit
 sbm.gitSupportEnabled=true
+sbm.muleTriggerMeshTransformEnabled=true
 logging.level.org=ERROR
 logging.level.org.springframework.sbm.logging.MethodCallTraceInterceptor=DEBUG
 logging.level.org.springframework.sbm.logging.StopWatchTraceInterceptor=DEBUG

applications/spring-shell/src/main/resources/banner.txt

@@ -38,6 +38,15 @@ Base Package: ${sbm.defaultBasePackage}
 
     Use -Dsbm.defaultBasePackage=com.acme.packagename as VM parameter on startup to set the property.
 
+TriggerMesh transformation support of Dataweave: ${sbm.muleTriggerMeshTransformEnabled}
+
+    - When applying the mule-to-boot recipe, use `sbm.muleTriggerMeshTransformEnabled` to
+      generate the code required to send the Dataweave transformation to TriggerMesh using
+      the TriggerMesh Dataweave transformation service (https://docs.triggermesh.io/guides/dataweavetransformation/).
+    - This will require a TriggerMesh transformation exist on your Kubernetes cluster to function. When running the
+      service, be sure to set the `K_SINK` environment variable to your exposed service URL.
+
+    Use -Dsbm.muleTriggerMeshTransformEnabled=true|false as VM parameter on startup to set property.
 
 Get Started:
 ------------

components/sbm-core/src/main/java/org/springframework/sbm/project/resource/SbmApplicationProperties.java

@@ -30,6 +30,7 @@
 @ConfigurationProperties(prefix = "sbm")
 public class SbmApplicationProperties {
     private boolean gitSupportEnabled;
+    private boolean muleTriggerMeshTransformEnabled;
     private String defaultBasePackage;
     private boolean writeInMavenLocal;
     private boolean  javaParserLoggingCompilationWarningsAndErrors;

components/sbm-core/src/main/resources/application-core.properties

@@ -18,6 +18,8 @@
 
 # toggle support for git to sync and auto-commit
 sbm.gitSupportEnabled=true
+# toggle support to use TriggerMesh for dataweave transformations
+sbm.muleTriggerMeshTransformEnabled=false
 # default base package when adding classes and no base package can be calculated
 sbm.defaultBasePackage=org.springframework.sbm
 # default groupId when creating a new build file

components/sbm-core/src/test/java/org/springframework/sbm/project/parser/ProjectContextInitializerTest.java

@@ -83,7 +83,7 @@
         ProjectResourceSetHolder.class,
         JavaRefactoringFactoryImpl.class,
         ProjectResourceWrapperRegistry.class
-}, properties = {"sbm.gitSupportEnabled=false"})
+}, properties = {"sbm.gitSupportEnabled=false", "sbm.muleTriggerMeshTransformEnabled=false"})
 class ProjectContextInitializerTest {
 
     private final Path projectDirectory = Path.of("./testcode/path-scanner").toAbsolutePath().normalize();

components/sbm-recipes-mule-to-boot/src/main/java/org/springframework/sbm/mule/MigrateMuleToBoot.java

@@ -15,6 +15,7 @@
  */
 package org.springframework.sbm.mule;
 
+import lombok.RequiredArgsConstructor;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -29,23 +30,34 @@
 import org.springframework.sbm.java.migration.conditions.HasTypeAnnotation;
 import org.springframework.sbm.mule.actions.JavaDSLAction2;
 import org.springframework.sbm.mule.conditions.MuleConfigFileExist;
+import org.springframework.sbm.project.resource.SbmApplicationProperties;
 
 import java.util.List;
 
+@RequiredArgsConstructor
 @Configuration
 public class MigrateMuleToBoot {
+    private final SbmApplicationProperties sbmProperties;
 
     @Autowired
     private JavaDSLAction2 javaDSLAction2;
 
-
     @Bean
     public Recipe muleRecipe() {
+        String name = "migrate-mule-to-boot";
+        String description = "Migrate Mulesoft 3.9 to Spring Boot.";
+
+        // Flag to enable TriggerMesh ransformation mode
+        if (sbmProperties.isMuleTriggerMeshTransformEnabled()) {
+            name = "migrate-mule-to-triggermesh-boot";
+            description = "Migrate Mulesoft 3.9 to Spring Boot using TriggerMesh.";
+            javaDSLAction2.setMuleTriggerMeshTransformEnabled(true);
+        }
+
         return Recipe.builder()
-                .name("migrate-mule-to-boot")
-                .description("Migrate Mulesoft 3.9 to Spring Boot")
+                .name(name)
+                .description(description)
                 .order(60)
-                .description("Migrate Mulesoft to Spring Boot")
                 .condition(new MuleConfigFileExist())
                 .actions(List.of(
                         /*

components/sbm-recipes-mule-to-boot/src/main/java/org/springframework/sbm/mule/actions/JavaDSLAction2.java

@@ -30,8 +30,10 @@
 import org.springframework.sbm.java.api.JavaSource;
 import org.springframework.sbm.java.api.JavaSourceAndType;
 import org.springframework.sbm.java.api.Type;
+import org.springframework.sbm.mule.actions.javadsl.translators.DslSnippet;
 import org.springframework.sbm.mule.api.MuleMigrationContext;
 import org.springframework.sbm.mule.api.MuleMigrationContextFactory;
+import org.springframework.sbm.mule.api.toplevel.AbstractTopLevelElement;
 import org.springframework.sbm.mule.api.toplevel.TopLevelElement;
 import org.springframework.sbm.mule.api.toplevel.TopLevelElementFactory;
 import org.springframework.sbm.mule.api.toplevel.UnknownTopLevelElement;
@@ -54,6 +56,8 @@ public class JavaDSLAction2 extends AbstractAction {
     private final MuleMigrationContextFactory muleMigrationContextFactory;
     private final Map<Class<?>, TopLevelElementFactory> topLevelTypeMap;
 
+    private boolean muleTriggerMeshTransformEnabled;
+
     @Autowired
     public JavaDSLAction2(MuleMigrationContextFactory muleMigrationContextFactory, List<TopLevelElementFactory> topLevelTypeFactories) {
         topLevelTypeMap = topLevelTypeFactories.stream()
@@ -110,6 +114,11 @@ private void handleTopLevelElements(BuildFile buildFile, MuleMigrationContext mu
         buildFile.addDependencies(new ArrayList<>(dependencies));
         endProcess();
 
+        if (muleTriggerMeshTransformEnabled) {
+            logEvent("Adding TriggerMesh Dataweave payload class");
+            createClass(context, createTmDwPayloadClass(context));
+        }
+
         logEvent("Adding " + topLevelElements.size() + " methods");
         topLevelElements.forEach(topLevelElement -> {
             flowConfigurationSource.getType().addMethod(
@@ -228,4 +237,25 @@ private SpringBootApplicationProperties findOrCreateDefaultApplicationProperties
                 .findFirst()
                 .get();
     }
+
+    public void setMuleTriggerMeshTransformEnabled(boolean mode) {
+        this.muleTriggerMeshTransformEnabled = mode;
+    }
+
+    private String createTmDwPayloadClass(ProjectContext projectContext) {
+        JavaSourceSet mainJavaSourceSet = projectContext.getApplicationModules().getTopmostApplicationModules().get(0).getMainJavaSourceSet();
+        String packageName = mainJavaSourceSet.getJavaSourceLocation().getPackageName();
+        return "package " + packageName + ";\n" +
+                        "import " + SPRING_CONFIGURATION_ANNOTATION + ";\n\n" +
+                        "import lombok.Data;\n\n" +
+                        "/* Included with the baseline to support bridging between the Flow configuration and the translation implementation. */\n\n" +
+                        "@Data\n" +
+                        "public class TmDwPayload {\n" +
+                        "    private String id;\n" +
+                        "    private String source;\n" +
+                        "    private String sourceType;\n" +
+                        "    private String payload;\n" +
+                        "}\n";
+    }
+
 }

components/sbm-recipes-mule-to-boot/src/main/java/org/springframework/sbm/mule/actions/javadsl/translators/dwl/DwlTransformTranslator.java

@@ -142,14 +142,19 @@ public DslSnippet translate(
             String flowName,
             Map<Class, MuleComponentToSpringIntegrationDslTranslator> translatorsMap
     ) {
+        // Ugly hack to work around an inability to inject a sbm property into the mulesoft parser.
+        String isTmTransformationEnabled = System.getProperty("sbm.muleTriggerMeshTransformEnabled");
 
         if (component.getSetPayload() != null) {
             if (isComponentReferencingAnExternalFile(component)) {
                 return formExternalFileBasedDSLSnippet(component);
             }
 
-            //return formEmbeddedDWLBasedDSLSnippet(component, Helper.sanitizeForBeanMethodName(flowName), id);
-            return formTriggerMeshDWLBasedDSLSnippet(component, Helper.sanitizeForBeanMethodName(flowName), id);
+            if (isTmTransformationEnabled != null && isTmTransformationEnabled.equals("true")) {
+                return formTriggerMeshDWLBasedDSLSnippet(component, Helper.sanitizeForBeanMethodName(flowName), id);
+            } else {
+                return formEmbeddedDWLBasedDSLSnippet(component, Helper.sanitizeForBeanMethodName(flowName), id);
+            }
         }
 
         return noSupportDslSnippet();