NPE during API export if the swagger.json file is missing from the registry

[imedyaosandi]

Description

The below error can be observed during API export if the swagger.json file missing from the registry.

java.lang.NullPointerException

at java.io.StringReader.<init>(StringReader.java:50)

at com.google.gson.JsonParser.parseString(JsonParser.java:50)

at com.google.gson.JsonParser.parse(JsonParser.java:112)

at org.wso2.carbon.apimgt.importexport.utils.APIExportUtil.exportMetaInformation(APIExportUtil.java:874)

at org.wso2.carbon.apimgt.importexport.utils.APIExportUtil.retrieveApiToExport(APIExportUtil.java:258)

at org.wso2.carbon.apimgt.importexport.APIService.exportAPI(APIService.java:165)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:179)

at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96)

at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:201)

at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:104)

Steps to Reproduce

Execute the following command to export the API from the publisher portal for an API that does not have the swagger.json:

curl --location '[https://xxxx:port/api-import-export-2.6.0-v18/export-api?name=test&version=1.0&provider=LDAP/mmaa&preserveStatus=true'](https://hom-publisher.apim.ca-assurances.intra/api-import-export-2.6.0-v18/export-api?name=test&version=1.0&provider=LDAP/mmaa&preserveStatus=true%27) \

--header 'Authorization: Basic [base64encode(username:password)]'

Affected Component

APIM

Version

2.6.0

Environment Details (with versions)

No response

Relevant Log Output

No response

Related Issues

No response

Suggested Labels

bug

[npamudika]

Fixed via https://github.com/wso2-support/product-apim/pull/1857 and wso2/product-apim-tooling#1028. Not porting to master branch as this is a custom requirement.