No Issue - Add a warn in the logs when elements have duplicated vars (#823)

* No Issue - Add a warn in the logs when elements have duplicated vars

Signed-off-by: Ricardo Zanini <[email protected]>

* Fix imports

Signed-off-by: Ricardo Zanini <[email protected]>

* Add the Override annotation

Signed-off-by: Ricardo Zanini <[email protected]>

---------

Signed-off-by: Ricardo Zanini <[email protected]>

Author: ricardozanini

client/deployment/src/main/java/io/quarkiverse/openapi/generator/deployment/wrapper/QuarkusJavaClientCodegen.java

@@ -7,8 +7,12 @@
 import java.util.Map;
 import java.util.Objects;
 import java.util.Optional;
+import java.util.Set;
 import java.util.TreeMap;
+import java.util.TreeSet;
 
+import org.openapitools.codegen.CodegenModel;
+import org.openapitools.codegen.CodegenProperty;
 import org.openapitools.codegen.SupportingFile;
 import org.openapitools.codegen.config.GlobalSettings;
 import org.openapitools.codegen.languages.JavaClientCodegen;
@@ -18,6 +22,7 @@
 import org.slf4j.LoggerFactory;
 
 import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.media.Schema;
 import io.swagger.v3.oas.models.servers.Server;
 
 public class QuarkusJavaClientCodegen extends JavaClientCodegen {
@@ -130,6 +135,31 @@ public void postProcess() {
 
     }
 
+    @Override
+    public CodegenModel fromModel(String name, Schema model) {
+        CodegenModel codegenModel = super.fromModel(name, model);
+        warnIfDuplicated(codegenModel);
+        return codegenModel;
+    }
+
+    private void warnIfDuplicated(CodegenModel m) {
+        Set<String> propertyNames = new TreeSet<>();
+        for (CodegenProperty element : m.allVars) {
+            if (element.deprecated) {
+                continue;
+            }
+
+            // We can have baseName as `my-type` and `myType`, that are duplicates
+            if (propertyNames.contains(element.name)) {
+                LOGGER.warn(
+                        "Variable {} is duplicated in the OpenAPI spec file. Consider adding the 'deprecated' attribute to it or remove it from the file. Java class {} will fail to compile.",
+                        element.baseName, m.classFilename);
+            } else {
+                propertyNames.add(element.name);
+            }
+        }
+    }
+
     @Override
     public String toEnumVarName(String value, String datatype) {
 

client/deployment/src/test/java/io/quarkiverse/openapi/generator/deployment/wrapper/OpenApiClientGeneratorWrapperTest.java

@@ -45,6 +45,26 @@
 
 public class OpenApiClientGeneratorWrapperTest {
 
+    @Test
+    void verifyFlink() throws URISyntaxException, FileNotFoundException {
+        OpenApiClientGeneratorWrapper generatorWrapper = createGeneratorWrapper("issue-flink.yaml");
+        final List<File> generatedFiles = generatorWrapper.generate("org.acme.flink");
+        assertNotNull(generatedFiles);
+        assertFalse(generatedFiles.isEmpty());
+
+        final Optional<File> duplicatedVars = generatedFiles.stream()
+                .filter(f -> f.getName().endsWith("AsynchronousOperationResultOperation.java")).findFirst();
+        assertThat(duplicatedVars).isPresent();
+
+        CompilationUnit compilationUnit = StaticJavaParser.parse(duplicatedVars.orElseThrow());
+        List<VariableDeclarator> vars = compilationUnit.findAll(VariableDeclarator.class);
+        assertThat(vars).isNotEmpty();
+
+        // This openApi file has a duplicated field
+        assertThat(vars.stream()
+                .filter(v -> "failureCause".equals(v.getNameAsString())).count()).isEqualTo(4);
+    }
+
     @Test
     void verifySuffixPrefix() throws URISyntaxException {
         OpenApiClientGeneratorWrapper generatorWrapper = createGeneratorWrapper("suffix-prefix-openapi.json");