We are currently using swagger-inflector and customized swagger-codegen to
generate our pojos and controllers in our application.
We have an endpoint called /import that takes an object defined something like
this:
{
"ExportObject": {
"properties": {
"someobject": {
"type": "object",
"items": {
"$ref": "./models/export-response-metadata.json#/Someobject"
}
},
"blob": {
"type": "string",
"format": "byte",
},
*...*
},
"required": [
"exportResponseMetadata",
"blob"
],
"type": "object"
}
}
The problem is that when we call the /import endpoint, we get the following
scary NPE error though
all the functionalities work as intended and there isn't any error in the
application itself. Searching
around a bit seems to show that using the *byte* type format for properties.
When looking at the NodeType
JsonToken map
(https://github.com/fge/jackson-coreutils/blob/master/src/main/java/com/github/fge/
jackson/NodeType.java) we see that VALUE_EMBEDDED_OBJECT is never put in the
TOKENMAP.
There seems to be no way we can modify our custom generated code to fix this
problem as it resides
in swagger-inflector. There was another difficulty we met with the generated
controllers that made
us write our own controller for this endpoint. I'm wondering if this is a bug
or a problem in
the way we define our json schemas as the inputs?
Whatever the problem is, is there any way to get around this NPE?
2017-09-20 16:00:39,828 [http-nio-8282-exec-3] ERROR
i.s.inflector.schema.SchemaValidator - can't validate model against schema
java.lang.NullPointerException: unhandled token type VALUE_EMBEDDED_OBJECT
at
com.google.common.base.Preconditions.checkNotNull(Preconditions.java:787)
at com.github.fge.jackson.NodeType.getNodeType(NodeType.java:144)
at
com.github.fge.jsonschema.processors.data.SchemaContext.<init>(SchemaContext.java:49)
at
com.github.fge.jsonschema.processors.validation.InstanceValidator.process(InstanceValidator.java:104)
at
com.github.fge.jsonschema.processors.validation.InstanceValidator.processObject(InstanceValidator.java:218)
at
com.github.fge.jsonschema.processors.validation.InstanceValidator.process(InstanceValidator.java:151)
at
com.github.fge.jsonschema.processors.validation.ValidationProcessor.process(ValidationProcessor.java:56)
at
com.github.fge.jsonschema.processors.validation.ValidationProcessor.process(ValidationProcessor.java:34)
at
com.github.fge.jsonschema.core.processing.ProcessingResult.of(ProcessingResult.java:79)
at
com.github.fge.jsonschema.main.JsonSchema.doValidate(JsonSchema.java:76)
at
com.github.fge.jsonschema.main.JsonSchema.validate(JsonSchema.java:109)
at
com.github.fge.jsonschema.main.JsonSchema.validate(JsonSchema.java:125)
at
io.swagger.inflector.schema.SchemaValidator.validate(SchemaValidator.java:32)
at
io.swagger.inflector.controllers.SwaggerOperationController.doValidation(SwaggerOperationController.java:772)
at
io.swagger.inflector.controllers.SwaggerOperationController.validate(SwaggerOperationController.java:698)
at
io.swagger.inflector.controllers.SwaggerOperationController.apply(SwaggerOperationController.java:428)
at
io.swagger.inflector.controllers.SwaggerOperationController.apply(SwaggerOperationController.java:88)
at sun.reflect.GeneratedMethodAccessor371.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81)
at
org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144)
at
org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161)
at
org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$ResponseOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:160)
at
org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99)
at
org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389)
at
org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347)
at
org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102)
at
org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:326)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
at
org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
at
org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305)
at
org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
at
org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473)
at
org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427)
at
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388)
at
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341)
at
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.owasp.csrfguard.CsrfGuardFilter.doFilter(CsrfGuardFilter.java:72)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at
org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at com.dmsuite.web.logger.MDCFilter.doFilter(MDCFilter.java:32)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
at
org.apache.catalina.valves.rewrite.RewriteValve.invoke(RewriteValve.java:323)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at
org.apache.catalina.valves.rewrite.RewriteValve.invoke(RewriteValve.java:574)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:341)
at
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783)
at
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:798)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1441)
at
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
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