fix flatten option

Author: frantuma

modules/swagger-codegen/pom.xml

@@ -200,7 +200,7 @@
     </reporting>
     <properties>
         <diffutils-version>1.3.0</diffutils-version>
-        <swagger-codegen-v2-version>2.4.27</swagger-codegen-v2-version>
+        <swagger-codegen-v2-version>2.4.28-SNAPSHOT</swagger-codegen-v2-version>
     </properties>
     <dependencies>
         <dependency>

modules/swagger-codegen/src/main/java/io/swagger/codegen/v3/service/GeneratorUtil.java

@@ -12,6 +12,7 @@
 import io.swagger.models.Swagger;
 import io.swagger.models.auth.UrlMatcher;
 import io.swagger.parser.SwaggerParser;
+import io.swagger.parser.util.ParseOptions;
 import io.swagger.v3.core.util.Json;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.commons.lang3.Validate;
@@ -108,15 +109,26 @@ public static io.swagger.codegen.ClientOptInput getClientOptInputV2(GenerationRe
         }
         LOGGER.debug("getClientOptInputV2 - processed auth");
 
+        CodegenConfig codegenConfig=null;
+        try {
+            codegenConfig = CodegenConfigLoader.forName(lang);
+        } catch(RuntimeException e) {
+            throw new BadRequestException("Unsupported target " + lang + " supplied");
+        }
+        ParseOptions parseOptions = new ParseOptions();
+        parseOptions.setResolve(true);
+        if (codegenConfig.isUsingFlattenSpec() && !Boolean.FALSE.equals(generationRequest.getOptions().isUsingFlattenSpecForV2())) {
+            parseOptions.setFlatten(true);
+        }
         Swagger swagger;
         if (StringUtils.isBlank(inputSpec)) {
             if (inputSpecURL != null) {
                 if (!authorizationValues.isEmpty()) {
                     swagger =
                             new SwaggerParser().read(inputSpecURL, authorizationValues,
-                                    true);
+                                    parseOptions);
                 } else {
-                    swagger = new SwaggerParser().read(inputSpecURL);
+                    swagger = new SwaggerParser().read(inputSpecURL, null, parseOptions);
                 }
             } else {
                 throw new BadRequestException("No swagger specification was supplied");
@@ -126,9 +138,9 @@ public static io.swagger.codegen.ClientOptInput getClientOptInputV2(GenerationRe
             try {
                 JsonNode node = io.swagger.util.Json.mapper().readTree(inputSpec);
                 if (!authorizationValues.isEmpty()) {
-                    swagger = new SwaggerParser().read(node, authorizationValues, true);
+                    swagger = new SwaggerParser().read(node, authorizationValues, parseOptions);
                 } else {
-                    swagger = new SwaggerParser().read(node, true);
+                    swagger = new SwaggerParser().read(node, null,parseOptions);
                 }
             } catch (Exception e) {
                 LOGGER.error("Exception parsing input spec", e);
@@ -144,12 +156,6 @@ public static io.swagger.codegen.ClientOptInput getClientOptInputV2(GenerationRe
         io.swagger.codegen.ClientOptInput clientOptInput = new io.swagger.codegen.ClientOptInput();
         ClientOpts clientOpts = new ClientOpts();
 
-        CodegenConfig codegenConfig=null;
-        try {
-            codegenConfig = CodegenConfigLoader.forName(lang);
-        } catch(RuntimeException e) {
-            throw new BadRequestException("Unsupported target " + lang + " supplied");
-        }
         codegenConfig.setOutputDir(generationRequest.getOptions().getOutputDir());
         codegenConfig.setInputSpec(inputSpec);
         if (isNotEmpty(options.getApiPackage())) {

modules/swagger-codegen/src/main/java/io/swagger/codegen/v3/service/Options.java

@@ -39,6 +39,8 @@ public class Options {
     private String outputDir = "";
     private Boolean resolveFully;
 
+    private Boolean usingFlattenSpecForV2;
+
     private Map<String, String> codegenArguments = new LinkedHashMap<>();
 
     private boolean flattenInlineComposedSchemas = false;
@@ -504,4 +506,21 @@ public Options flattenInlineComposedSchemas(boolean flattenInlineComposedSchemas
         this.flattenInlineComposedSchemas = flattenInlineComposedSchemas;
         return this;
     }
+
+    public Boolean isUsingFlattenSpecForV2() {
+        return usingFlattenSpecForV2;
+    }
+
+    public Boolean getUsingFlattenSpecForV2() {
+        return usingFlattenSpecForV2;
+    }
+
+    public void setUsingFlattenSpecForV2(Boolean usingFlattenSpecForV2) {
+        this.usingFlattenSpecForV2 = usingFlattenSpecForV2;
+    }
+
+    public Options usingFlattenSpecForV2(Boolean usingFlattenSpecForV2) {
+        this.usingFlattenSpecForV2 = usingFlattenSpecForV2;
+        return this;
+    }
 }

pom.xml

@@ -1179,10 +1179,10 @@
     </repositories>
     <properties>
         <swagger-codegen-generators-version>1.0.35-SNAPSHOT</swagger-codegen-generators-version>
-        <swagger-core-version>2.1.13</swagger-core-version>
+        <swagger-core-version>2.2.1-SNAPSHOT</swagger-core-version>
         <swagger-core-version-v1>1.6.6</swagger-core-version-v1>
-        <swagger-parser-version>2.0.30</swagger-parser-version>
-        <swagger-parser-version-v1>1.0.59</swagger-parser-version-v1>
+        <swagger-parser-version>2.1.0-SNAPSHOT</swagger-parser-version>
+        <swagger-parser-version-v1>1.0.61-SNAPSHOT</swagger-parser-version-v1>
         <jackson-version>2.13.2</jackson-version>
         <!--
           jackson-databind 2.13.2 is still affected by CVE-2020-36518.