[teiid-issues] [JBoss JIRA] (TEIID-5183) NPE in Swagger translator

[Steven Hawkins (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-5183?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins resolved TEIID-5183.
-----------------------------------
    Fix Version/s: 10.1
                   9.3.6
                   10.0.2
       Resolution: Done


The issue turned out to be that we were not resolving swagger obtained remotely.  The code was updated to make the resolve parameters explicit and to clean up some of the metadata processing logic.

> NPE in Swagger translator
> -------------------------
>
>                 Key: TEIID-5183
>                 URL: https://issues.jboss.org/browse/TEIID-5183
>             Project: Teiid
>          Issue Type: Bug
>          Components: Misc. Connectors
>    Affects Versions: 9.3.4
>         Environment: teiid-9.3.4 on WildFly Full 10.0.0.Final (WildFly Core 2.0.10.Final)
>            Reporter: dalex dalex
>            Assignee: Steven Hawkins
>             Fix For: 10.1, 9.3.6, 10.0.2
>
>
> When using the http://api.apis.guru/v2/specs/azure.com/redis/2017-10-01/ link as an endpoint for swagger resource adapter Teiid throws up the following error message (in bootstrapping phase), though with http://petstore.swagger.io/v2 endpoint according to the https://teiid.gitbooks.io/documents/reference/Swagger_Translator.html documentation the translator works:
> {code:noformat}
> 2017-12-18 16:14:43,975 WARN  [org.teiid.RUNTIME] (Worker1_async-teiid-threads1)  TEIID50036 VDB test.1 model "mswagger" metadata failed to load. Reason:java.lang.NullPointerExceptio
> n: java.lang.NullPointerException
>         at org.teiid.metadata.MetadataFactory.setUUID(MetadataFactory.java:155)
>         at org.teiid.metadata.MetadataFactory.addProcedureParameter(MetadataFactory.java:421)
>         at org.teiid.translator.swagger.SwaggerMetadataProcessor.addProcedureParameters(SwaggerMetadataProcessor.java:560)
>         at org.teiid.translator.swagger.SwaggerMetadataProcessor.addProcedure(SwaggerMetadataProcessor.java:261)
>         at org.teiid.translator.swagger.SwaggerMetadataProcessor.process(SwaggerMetadataProcessor.java:206)
>         at org.teiid.translator.swagger.SwaggerMetadataProcessor.process(SwaggerMetadataProcessor.java:74)
>         at org.teiid.translator.ExecutionFactory.getMetadata(ExecutionFactory.java:961)
>         at org.teiid.query.metadata.NativeMetadataRepository.getMetadata(NativeMetadataRepository.java:96)
>         at org.teiid.query.metadata.NativeMetadataRepository.loadMetadata(NativeMetadataRepository.java:62)
>         at org.teiid.query.metadata.ChainingMetadataRepository.loadMetadata(ChainingMetadataRepository.java:55)
>         at org.teiid.jboss.VDBService$6.run(VDBService.java:341)
>         at org.teiid.jboss.VDBService$7.run(VDBService.java:392)
>         at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:284)
>         at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:119)
>         at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:210)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>         at java.lang.Thread.run(Thread.java:745)
> {code}
> The http://api.apis.guru/v2/specs/azure.com/redis/2017-10-01/ endpoint supports swagger API according to the https://apis.guru/browse-apis/ link and I can see json output when requesting the http://api.apis.guru/v2/specs/azure.com/redis/2017-10-01/swagger.json link. Probably the NPE appears because of RefParameter type which is not handled in SwaggerMetadataProcessor.addProcedureParameters method which leads to name = null.



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