DatasetTool marker interface;

src/main/java/de/extio/lmdatasetprep/LmDatasetPreparerApplication.java

@@ -1,5 +1,6 @@
 package de.extio.lmdatasetprep;
 
+import java.util.Arrays;
 import java.util.function.Consumer;
 
 import org.slf4j.Logger;
@@ -13,6 +14,8 @@ import org.springframework.context.ApplicationContext;
 import org.springframework.context.ApplicationContextAware;
 import org.springframework.context.annotation.ComponentScan;
 
+import de.extio.lmdatasetprep.preparer.DatasetTool;
+
 @SpringBootApplication
 @EnableCaching
 @ComponentScan(basePackages = { "de.extio.lmdatasetprep", "de.extio.lmlib" })
@@ -31,12 +34,14 @@ public class LmDatasetPreparerApplication implements CommandLineRunner, Applicat
 	public void run(final String... args) throws Exception {
 		if (args.length == 0) {
 			LOGGER.error("Commandline argument is missing: Provide the tool name as argument");
+			this.logAvailableTools();
 			return;
 		}
 		
 		final var bean = applicationContext.getBean(args[0]);
-		if (!(bean instanceof Consumer)) {
+		if (!(bean instanceof Consumer) || !(bean instanceof DatasetTool)) {
 			LOGGER.error("Invalid bean {}", args[0]);
+			this.logAvailableTools();
 			return;
 		}
 		
@@ -49,6 +54,10 @@ public class LmDatasetPreparerApplication implements CommandLineRunner, Applicat
 		}
 	}
 	
+	private void logAvailableTools() {
+		LOGGER.error("Available tools: {}", Arrays.toString(applicationContext.getBeanNamesForType(DatasetTool.class)));
+	}
+	
 	@Override
 	public void setApplicationContext(final ApplicationContext appContext) throws BeansException {
 		applicationContext = appContext;