Exception at parsing /identity/token response

[LenarBad]

Describe the bug The client failed to parse a response for a call https://iam.cloud.ibm.com/identity/token - thrown a Gson exception

To Reproduce

• Instantiate

     IamAuthenticator authenticator = new IamAuthenticator.Builder()
              .apikey(cloudantApiKey)
              .build();
      Cloudant service = new Cloudant("Cloudant-5t", authenticator);
      service.setServiceUrl(cloudantUrl);

• Make a call

      ServerInformation serverInformation = cloudant
              .getServerInformation()
              .execute()
              .getResult();

Expected behavior Expected - no exception thrown Actual result - thrown a java.lang.RuntimeException (see the stacktrace below)

Screenshots After some debug I found that the successful response was actually received (see the screenshot) but Gson failed to parse it

Must gather (please complete the following information):

• SDK Version 0.2.0
• Java Version

  $ java -version
  java version "1.8.0_131"
  Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
  Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)

Additional context

java.lang.RuntimeException: Error while fetching access token from token service: 

    at com.ibm.cloud.sdk.core.security.TokenRequestBasedAuthenticator.getToken(TokenRequestBasedAuthenticator.java:272)
    at com.ibm.cloud.sdk.core.security.TokenRequestBasedAuthenticator.authenticate(TokenRequestBasedAuthenticator.java:210)
    at com.ibm.cloud.sdk.core.service.BaseService.setAuthentication(BaseService.java:414)
    at com.ibm.cloud.sdk.core.service.BaseService.createCall(BaseService.java:352)
    at com.ibm.cloud.sdk.core.service.BaseService.createServiceCall(BaseService.java:390)
    at com.ibm.cloud.cloudant.internal.CloudantBaseService.createServiceCall(CloudantBaseService.java:185)
    at com.ibm.cloud.cloudant.v1.Cloudant.getServerInformation(Cloudant.java:223)
    at com.ibm.cloud.cloudant.v1.Cloudant.getServerInformation(Cloudant.java:236)
.....
Caused by: java.lang.NoClassDefFoundError: com/google/gson/ToNumberStrategy
    at com.ibm.cloud.sdk.core.util.ResponseUtils.getValue(ResponseUtils.java:149)
    at com.ibm.cloud.sdk.core.util.ResponseConverterUtils$6.convert(ResponseConverterUtils.java:137)
    at com.ibm.cloud.sdk.core.security.TokenRequestBasedAuthenticator$2.run(TokenRequestBasedAuthenticator.java:323)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: com.google.gson.ToNumberStrategy
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 4 more

[ricellis]

Caused by: java.lang.NoClassDefFoundError: com/google/gson/ToNumberStrategy

IIRC that class was added since GSON 2.8.9.

cloudant-java-sdk@0.2.0 asks for GSON 2.9.0†.

Please make sure you have the correct version of GSON on your classpath or that another requirement isn't putting an older version of GSON earlier on the classpath.

†here and via IBM Cloud sdk-core@9.17.3 dependency here.

[LenarBad]

Yes, that was the issue. I think it's worth mentioning somewhere. Anyway thank you!