fix for recurssion #2

Author: gracekarina

modules/swagger-parser-v3/src/main/java/io/swagger/v3/parser/util/ResolverFully.java

@@ -264,7 +264,6 @@ public Parameter resolveParameter(Parameter parameter){
 
     public Schema resolveSchema(Schema schema) {
         if(schema.get$ref() != null) {
-
             String ref= schema.get$ref();
             ref = ref.substring(ref.lastIndexOf("/") + 1);
             Schema resolved = schemas.get(ref);
@@ -306,8 +305,14 @@ public Schema resolveSchema(Schema schema) {
                     Schema innerProperty = obj.getProperties().get(propertyName);
                     // reference check
                     if(schema != innerProperty) {
-                        Schema resolved = resolveSchema(innerProperty);
-                        updated.put(propertyName, resolved);
+                        if(resolvedProperties.get(propertyName) == null && resolvedProperties.get(propertyName) != innerProperty) {
+                            LOGGER.debug("avoiding infinite loop");
+                            Schema resolved = resolveSchema(innerProperty);
+                            updated.put(propertyName, resolved);
+                            resolvedProperties.put(propertyName, resolved);
+                        }else {
+                            updated.put(propertyName, resolvedProperties.get(propertyName));
+                        }
                     }
                 }
                 obj.setProperties(updated);
@@ -500,7 +505,6 @@ public Schema resolveSchema(Schema schema) {
                     resolvedProperties.put(propertyName, resolved);
                 }else {
                     updated.put(propertyName, resolvedProperties.get(propertyName));
-
                 }
             }
 

modules/swagger-parser-v3/src/test/java/io/swagger/v3/parser/test/OpenAPIResolverTest.java

@@ -8,6 +8,7 @@
 import com.github.tomakehurst.wiremock.client.WireMock;
 import com.github.tomakehurst.wiremock.core.WireMockConfiguration;
 import io.swagger.v3.core.util.Json;
+import io.swagger.v3.core.util.Yaml;
 import io.swagger.v3.oas.models.Components;
 import io.swagger.v3.oas.models.OpenAPI;
 import io.swagger.v3.oas.models.Operation;
@@ -1151,6 +1152,20 @@ public void recursiveResolving() {
 
     }
 
+    @Test
+    public void recursiveResolving2() {
+        ParseOptions parseOptions = new ParseOptions();
+        parseOptions.setResolve(true);
+        parseOptions.setResolveFully(true);
+        OpenAPI openAPI = new OpenAPIV3Parser().read("recursive2.yaml", null, parseOptions);
+        try {
+            Json.mapper().writeValueAsString(openAPI);
+        }
+        catch (Exception e) {
+            fail("Recursive loop found");
+        }
+    }
+
     public String replacePort(String url){
         String pathFile = url.replace("${dynamicPort}", String.valueOf(this.serverPort));
         return pathFile;

modules/swagger-parser-v3/src/test/resources/recursive2.yaml

@@ -0,0 +1,44 @@
+openapi: 3.0.0
+info:
+  version: 'minimal'
+  title: 'recursion2'
+  description: 'problem in ResolverFully'
+
+paths:
+  /foo:
+    post:
+      responses:
+        '200':
+          description: Ok
+      requestBody:
+        $ref: '#/components/requestBodies/MyRequestBody'
+
+  /bar:
+    put:
+      responses:
+        '200':
+          description: Ok
+      requestBody:
+        $ref: '#/components/requestBodies/MyRequestBody'
+
+components:
+  schemas:
+    Schema1:
+      type: object
+      properties:
+        prop:
+          $ref: '#/components/schemas/Schema2'
+    Schema2:
+      type: object
+      properties:
+        prop1:
+          $ref: '#/components/schemas/Schema1'
+        prop2:
+          $ref: '#/components/schemas/Schema1'
+
+  requestBodies:
+    MyRequestBody:
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/Schema2'