[BUG] [codegen] external $ref in parameters not getting resolved
Created by: jphorx
Description
When attempting to generate code from an OpenAPI document that included $ref , all of the references failed to be resolved and are included in files in the same directory. I've seen other's report this issue before, but it is supposed to be resolved in the version I tested with.
openapi-generator version
3.3.4
OpenAPI declaration file content or url
https://github.com/jdegre/5GC_APIs.git
Command line used for generation
% java -jar openapi-generator-cli.jar generate -i ./TS29514_Npcf_PolicyAuthorization.yaml -g java-vertx -o ./PCF/PolicyAuth
Steps to reproduce
Working in Ubuntu 16.04 ( if that matters ).
I followed the instructions here ( https://openapi-generator.tech/docs/installation ) and installed the JAR, to pull down the 3.3.4 version of the library. I cloned OpenAPI yaml specifications from this repo: https://github.com/jdegre/5GC_APIs.git
Tried to generate with this command:
% java -jar openapi-generator-cli.jar generate -i ./TS29514_Npcf_PolicyAuthorization.yaml -g java-vertx -o ./PCF/PolicyAuth
The output was as follows:
[main] WARN io.swagger.v3.parser.OpenAPIV3Parser - Exception while reading: java.lang.NullPointerException: null at io.swagger.v3.parser.ResolverCache.updateLocalRefs(ResolverCache.java:162) at io.swagger.v3.parser.ResolverCache.loadRef(ResolverCache.java:152) at io.swagger.v3.parser.processors.ExternalRefProcessor.processRefToExternalResponse(ExternalRefProcessor.java:205) at io.swagger.v3.parser.processors.ResponseProcessor.processReferenceResponse(ResponseProcessor.java:76) at io.swagger.v3.parser.processors.ResponseProcessor.processResponse(ResponseProcessor.java:38) at io.swagger.v3.parser.processors.OperationProcessor.processOperation(OperationProcessor.java:56) at io.swagger.v3.parser.processors.PathsProcessor.processPaths(PathsProcessor.java:83) at io.swagger.v3.parser.OpenAPIResolver.resolve(OpenAPIResolver.java:49) at io.swagger.v3.parser.OpenAPIV3Parser.readLocation(OpenAPIV3Parser.java:53) at io.swagger.parser.OpenAPIParser.readLocation(OpenAPIParser.java:19) at org.openapitools.codegen.config.CodegenConfigurator.toClientOptInput(CodegenConfigurator.java:552) at org.openapitools.codegen.cmd.Generate.run(Generate.java:354) at org.openapitools.codegen.OpenAPIGenerator.main(OpenAPIGenerator.java:62) [main] WARN o.o.codegen.utils.ModelUtils - Failed to get the schema name: ./TS29571_CommonData.yaml#/components/schemas/RouteToLocation [main] WARN o.o.codegen.utils.ModelUtils - Failed to get the schema name: ./TS29571_CommonData.yaml#/components/schemas/RouteToLocation [main] WARN o.o.codegen.utils.ModelUtils - Failed to get the schema name: ./TS29571_CommonData.yaml#/components/schemas/PresenceInfo [main] WARN o.o.codegen.utils.ModelUtils - Failed to get the schema name: ./TS29571_CommonData.yaml#/components/schemas/PresenceInfo . . LOTS more warnings like these, omitted to keep this concise . [main] WARN o.o.codegen.utils.ModelUtils - Failed to get the schema name: ./TS29571_CommonData.yaml#/components/responses/503 [main] WARN o.o.codegen.utils.ModelUtils - Failed to get the schema name: ./TS29571_CommonData.yaml#/components/responses/default Exception in thread "main" org.openapitools.codegen.SpecValidationException: There were issues with the specification. The option can be disabled via validateSpec (Maven/Gradle) or --skip-validate-spec (CLI). | Error count: 1, Warning count: 0 Errors: -null
at org.openapitools.codegen.config.CodegenConfigurator.toClientOptInput(CodegenConfigurator.java:569)
at org.openapitools.codegen.cmd.Generate.run(Generate.java:354)
at org.openapitools.codegen.OpenAPIGenerator.main(OpenAPIGenerator.java:62)Related issues/PRs
This one seems very similar: https://github.com/OpenAPITools/openapi-generator/issues/455