We have not used it before. We were attempting to use it now and while 
reading the documentation realized that we could try switching to java 8 at 
the same time. Did you manage to find out about the status of it being 
supported on Appengine standard?

Thanks,
Anand

On Friday, July 14, 2017 at 2:30:40 AM UTC+5:30, Yannick (Cloud Platform 
Support) wrote:
>
> Hello Anand,
>
> Could you tell me if you were able to use the Natural Language API before? 
> If so how were you doing it? Did you ever use it on App Engine standard?
>
> Also are you able to use the Natural Language API through REST on Java 8 
> standard?
>
> On Thursday, July 13, 2017 at 1:03:48 PM UTC-4, Yannick (Cloud Platform 
> Support) wrote:
>>
>> Hello Anand, 
>>
>> Whenever you find a reproducible error we strongly encourage that you report 
>> it to our Issue Tracker 
>> <https://cloud.google.com/support/docs/issue-trackers> to help us find 
>> and fix these issues.
>>
>> This being said in this particular scenario it appears that the Language 
>> API is not yet supported on App Engine Standard 
>> <https://www.google.com/url?q=https%3A%2F%2Fgithub.com%2FGoogleCloudPlatform%2Fjava-docs-samples%2Ftree%2Fmaster%2Flanguage%2Fanalysis&sa=D&sntz=1&usg=AFQjCNEXwDMvkdNVygr7Ye86sAvPqspObA>.
>>  
>> I will attempt to find out if the release of Java 8 for App Engine standard 
>> was meant to change this state of affairs.
>>
>>
>> On Wednesday, July 12, 2017 at 7:38:25 AM UTC-4, Anand Srinivasan wrote:
>>>
>>> We recently started looking into switching to java 8 so that we can use 
>>> the myriad benefits that it offers including grpc. We tried using grpc for 
>>> the google cloud natural language API but we were unable to get that to 
>>> work. Here is the stack trace that we hit when trying to make the 
>>> analyzeSentiment call.
>>>
>>> com.google.api.server.spi.SystemService invokeServiceMethod: exception 
>>> occurred while calling backend method (SystemService.java:398 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=SystemService.java&line=398&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> com.google.api.gax.grpc.ApiException: io.grpc.StatusRuntimeException: 
>>> UNAUTHENTICATED at 
>>> com.google.api.gax.grpc.ExceptionTransformingCallable$ExceptionTransformingFuture.onFailure(
>>> ExceptionTransformingCallable.java:108 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=com%2Fgoogle%2Fapi%2Fgax%2Fgrpc%2FExceptionTransformingCallable.java&line=108&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at com.google.api.core.ApiFutures$1.onFailure(ApiFutures.java:53 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=com%2Fgoogle%2Fapi%2Fcore%2FApiFutures.java&line=53&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at com.google.common.util.concurrent.Futures$4.run(Futures.java:1123 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=com%2Fgoogle%2Fcommon%2Futil%2Fconcurrent%2FFutures.java&line=1123&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(
>>> MoreExecutors.java:435 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=com%2Fgoogle%2Fcommon%2Futil%2Fconcurrent%2FMoreExecutors.java&line=435&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at com.google.common.util.concurrent.AbstractFuture.executeListener(
>>> AbstractFuture.java:900 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=com%2Fgoogle%2Fcommon%2Futil%2Fconcurrent%2FAbstractFuture.java&line=900&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at com.google.common.util.concurrent.AbstractFuture.complete(
>>> AbstractFuture.java:811 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=com%2Fgoogle%2Fcommon%2Futil%2Fconcurrent%2FAbstractFuture.java&line=811&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at com.google.common.util.concurrent.AbstractFuture.setException(
>>> AbstractFuture.java:675 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=com%2Fgoogle%2Fcommon%2Futil%2Fconcurrent%2FAbstractFuture.java&line=675&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at io.grpc.stub.ClientCalls$GrpcFuture.setException(ClientCalls.java:466 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=io%2Fgrpc%2Fstub%2FClientCalls.java&line=466&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at io.grpc.stub.ClientCalls$UnaryStreamToFuture.onClose(
>>> ClientCalls.java:442 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=io%2Fgrpc%2Fstub%2FClientCalls.java&line=442&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:426 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=io%2Fgrpc%2Finternal%2FClientCallImpl.java&line=426&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at io.grpc.internal.ClientCallImpl.access$100(ClientCallImpl.java:76 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=io%2Fgrpc%2Finternal%2FClientCallImpl.java&line=76&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.close(
>>> ClientCallImpl.java:512 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=io%2Fgrpc%2Finternal%2FClientCallImpl.java&line=512&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.access$700(
>>> ClientCallImpl.java:429 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=io%2Fgrpc%2Finternal%2FClientCallImpl.java&line=429&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at 
>>> io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInContext(
>>> ClientCallImpl.java:544 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=io%2Fgrpc%2Finternal%2FClientCallImpl.java&line=544&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:52 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=io%2Fgrpc%2Finternal%2FContextRunnable.java&line=52&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:117 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=io%2Fgrpc%2Finternal%2FSerializingExecutor.java&line=117&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
>>> at java.util.concurrent.FutureTask.run(FutureTask.java:266) at 
>>> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
>>>  
>>> at 
>>> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:295)
>>>  
>>> 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) Caused by: 
>>> io.grpc.StatusRuntimeException: UNAUTHENTICATED at 
>>> io.grpc.Status.asRuntimeException(Status.java:543 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=io%2Fgrpc%2FStatus.java&line=543&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> ... 15 more Caused by: java.io.IOException: Could not get the access token. 
>>> at com.google.auth.oauth2.AppEngineCredentials.refreshAccessToken(
>>> AppEngineCredentials.java:136 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=com%2Fgoogle%2Fauth%2Foauth2%2FAppEngineCredentials.java&line=136&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at com.google.auth.oauth2.OAuth2Credentials.refresh(
>>> OAuth2Credentials.java:149 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=com%2Fgoogle%2Fauth%2Foauth2%2FOAuth2Credentials.java&line=149&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at com.google.auth.oauth2.OAuth2Credentials.getRequestMetadata(
>>> OAuth2Credentials.java:135 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=com%2Fgoogle%2Fauth%2Foauth2%2FOAuth2Credentials.java&line=135&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> at io.grpc.auth.GoogleAuthLibraryCallCredentials$1.run(
>>> GoogleAuthLibraryCallCredentials.java:110 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=io%2Fgrpc%2Fauth%2FGoogleAuthLibraryCallCredentials.java&line=110&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> ... 7 more Caused by: java.lang.reflect.InvocationTargetException at 
>>> sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at 
>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>>>  
>>> at 
>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>>  
>>> at java.lang.reflect.Method.invoke(Method.java:498) at 
>>> com.google.auth.oauth2.AppEngineCredentials.refreshAccessToken(
>>> AppEngineCredentials.java:131 
>>> <https://console.cloud.google.com/debug/fromlog?appModule=default&appVersion=aniruddha2&file=com%2Fgoogle%2Fauth%2Foauth2%2FAppEngineCredentials.java&line=131&logInsertId=5965ffa200005d6159bb2c7b&logNanos=1499856800011609000&nestedLogIndex=45&project=village-test>)
>>>  
>>> ... 10 more Caused by: 
>>> com.google.apphosting.api.ApiProxy$CallNotFoundException: Can't make API 
>>> call memcache.Get in a thread that is neither the original request thread 
>>> nor a thread created by ThreadManager at 
>>> com.google.apphosting.api.ApiProxy$CallNotFoundException.foreignThread(ApiProxy.java:844)
>>>  
>>> at com.google.apphosting.api.ApiProxy$1.get(ApiProxy.java:183) at 
>>> com.google.apphosting.api.ApiProxy$1.get(ApiProxy.java:180) at 
>>> com.google.appengine.api.utils.FutureWrapper.get(FutureWrapper.java:93) at 
>>> com.google.appengine.api.memcache.MemcacheServiceImpl.quietGet(MemcacheServiceImpl.java:28)
>>>  
>>> at 
>>> com.google.appengine.api.memcache.MemcacheServiceImpl.get(MemcacheServiceImpl.java:51)
>>>  
>>> at 
>>> com.google.appengine.api.appidentity.AppIdentityServiceImpl.getAccessToken(AppIdentityServiceImpl.java:300)
>>>  
>>> ... 15 more
>>>
>>> The stack trace looks similar to the one posted in this link: 
>>> https://github.com/GoogleCloudPlatform/google-cloud-java/issues/1918#issuecomment-299004772.
>>>  
>>> It's unclear from the discussion there whether this issue was ever fixed. 
>>> In either case, what can we do to get around this?
>>>
>>> Thanks,
>>> Anand
>>>
>>

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  • [google-appengine... Anand Srinivasan
    • [google-appe... 'Yannick (Cloud Platform Support)' via Google App Engine
      • [google-... 'Yannick (Cloud Platform Support)' via Google App Engine
        • [goo... Anand Srinivasan
          • ... 'Yannick (Cloud Platform Support)' via Google App Engine
            • ... Emmanuel Charon
              • ... 'Yannick (Cloud Platform Support)' via Google App Engine
                • ... KANISHK GUPTA

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