[BUG] FailureException: NoClassDefFoundError: Could not initialize class reactor.netty.http.client.HttpClientConfig

[markpope]

Describe the bug
I'm following this tutorial to access a Key Vault from an Azure Function written in Java. From my PC I can successfully read a secret from the Key Vault, but not when the code is deployed to a Function App.

Exception or Stack Trace
2021-08-05T22:47:50.015 [Error] Executed 'Functions.UpdateAha' (Failed, Id=cd0f171d-8ef0-4cbc-8ebb-1a78375d7c70, Duration=8ms)Result: FailureException: NoClassDefFoundError: Could not initialize class reactor.netty.http.client.HttpClientConfigStack: java.lang.reflect.InvocationTargetExceptionat 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.microsoft.azure.functions.worker.broker.JavaMethodInvokeInfo.invoke(JavaMethodInvokeInfo.java:22)at com.microsoft.azure.functions.worker.broker.JavaMethodExecutorImpl.execute(JavaMethodExecutorImpl.java:54)at com.microsoft.azure.functions.worker.broker.JavaFunctionBroker.invokeMethod(JavaFunctionBroker.java:57)at com.microsoft.azure.functions.worker.handler.InvocationRequestHandler.execute(InvocationRequestHandler.java:33)at com.microsoft.azure.functions.worker.handler.InvocationRequestHandler.execute(InvocationRequestHandler.java:10)at com.microsoft.azure.functions.worker.handler.MessageHandler.handle(MessageHandler.java:45)at com.microsoft.azure.functions.worker.JavaWorkerClient$StreamingMessagePeer.lambda$onNext$0(JavaWorkerClient.java:92)at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)at java.util.concurrent.FutureTask.run(FutureTask.java:266)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)at java.lang.Thread.run(Thread.java:748)Caused by: java.lang.NoClassDefFoundError: Could not initialize class reactor.netty.http.client.HttpClientConfigat reactor.netty.http.client.HttpClientConnect.(HttpClientConnect.java:84)at reactor.netty.http.client.HttpClient.create(HttpClient.java:393)at com.azure.core.http.netty.NettyAsyncHttpClientBuilder.build(NettyAsyncHttpClientBuilder.java:97)at com.azure.core.http.netty.NettyAsyncHttpClientProvider.createInstance(NettyAsyncHttpClientProvider.java:18)at com.azure.core.implementation.http.HttpClientProviders.createInstance(HttpClientProviders.java:58)at com.azure.core.http.HttpClient.createDefault(HttpClient.java:50)at com.azure.core.http.HttpClient.createDefault(HttpClient.java:40)at com.azure.core.http.HttpPipelineBuilder.build(HttpPipelineBuilder.java:62)at com.azure.security.keyvault.secrets.SecretClientBuilder.buildAsyncClient(SecretClientBuilder.java:190)at com.azure.security.keyvault.secrets.SecretClientBuilder.buildClient(SecretClientBuilder.java:112)at

To Reproduce
Steps to reproduce the behavior:

Code Snippet
public class Function {
@functionName("Function")
public void run(
@TimerTrigger(name = "timerInfo", schedule = "0 0 * * * *") String timerInfo,
final ExecutionContext context
) {
SecretClient secretClient = new SecretClientBuilder()
.vaultUrl("https://.vault.azure.net")
.credential(new DefaultAzureCredentialBuilder().build())
.buildClient();
}
}

Setup (please complete the following information):

• OS: Azure

• IDE: VS

• Library/Libraries:
  
  com.microsoft.azure.functions
  azure-functions-java-library
  ${azure.functions.java.library.version}
  

   <dependency>
   	<groupId>com.azure</groupId>
   	<artifactId>azure-identity</artifactId>
   	<version>1.3.4</version>
   </dependency>
   
   <dependency>
   	<groupId>com.azure</groupId>
   	<artifactId>azure-security-keyvault-secrets</artifactId>
   	<version>4.3.1</version>
   </dependency>
  

• Java version: [e.g. 8]

• App Server/Environment: Azure Function

• Frameworks: None

[alzimmermsft]

Hi @markpope, thanks for submitting this issue.

Could you let me know if this comment resolves the issue you're seeing: #22242 (comment)

[markpope]

@alzimmermsft Thanks for that. Unfortunately another exception surfaced that I'm at a loss to resolve. Should I close this issue and open another? Here is the stack track after redeploying.

2021-08-06T02:06:11.624 [Error] Executed 'Functions.UpdateAha' (Failed, Id=69360ea6-5ddc-4641-bf99-b757445e53e5, Duration=11606ms)Result: FailureException: UnsupportedOperationException:Stack: java.lang.reflect.InvocationTargetExceptionat 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.microsoft.azure.functions.worker.broker.JavaMethodInvokeInfo.invoke(JavaMethodInvokeInfo.java:22)at com.microsoft.azure.functions.worker.broker.JavaMethodExecutorImpl.execute(JavaMethodExecutorImpl.java:54)at com.microsoft.azure.functions.worker.broker.JavaFunctionBroker.invokeMethod(JavaFunctionBroker.java:57)at com.microsoft.azure.functions.worker.handler.InvocationRequestHandler.execute(InvocationRequestHandler.java:33)at com.microsoft.azure.functions.worker.handler.InvocationRequestHandler.execute(InvocationRequestHandler.java:10)at com.microsoft.azure.functions.worker.handler.MessageHandler.handle(MessageHandler.java:45)at com.microsoft.azure.functions.worker.JavaWorkerClient$StreamingMessagePeer.lambda$onNext$0(JavaWorkerClient.java:92)at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)at java.util.concurrent.FutureTask.run(FutureTask.java:266)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)at java.lang.Thread.run(Thread.java:748)Caused by: java.lang.RuntimeException: Max retries 3 times exceeded. Error Details: nullat com.azure.core.http.policy.RetryPolicy.lambda$attemptAsync$1(RetryPolicy.java:127)at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onError(FluxOnErrorResume.java:94)at reactor.core.publisher.MonoFlatMap$FlatMapMain.onError(MonoFlatMap.java:172)at reactor.core.publisher.MonoFlatMap$FlatMapMain.onError(MonoFlatMap.java:172)at reactor.core.publisher.MonoFlatMap$FlatMapMain.secondError(MonoFlatMap.java:192)at reactor.core.publisher.MonoFlatMap$FlatMapInner.onError(MonoFlatMap.java:259)at reactor.core.publisher.MonoPeekTerminal$MonoTerminalPeekSubscriber.onError(MonoPeekTerminal.java:258)at reactor.core.publisher.MonoPeekTerminal$MonoTerminalPeekSubscriber.onError(MonoPeekTerminal.java:258)at reactor.core.publisher.FluxPeekFuseable$PeekConditionalSubscriber.onError(FluxPeekFuseable.java:903)at reactor.core.publisher.FluxPeekFuseable$PeekConditionalSubscriber.onError(FluxPeekFuseable.java:903)at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onError(Operators.java:2062)at reactor.core.publisher.MonoNext$NextSubscriber.onError(MonoNext.java:93)at reactor.core.publisher.FluxFlatMap$FlatMapMain.checkTerminated(FluxFlatMap.java:842)at reactor.core.publisher.FluxFlatMap$FlatMapMain.drainLoop(FluxFlatMap.java:608)at reactor.core.publisher.FluxFlatMap$FlatMapMain.innerComplete(FluxFlatMap.java:894)at reactor.core.publisher.FluxFlatMap$FlatMapInner.onComplete(FluxFlatMap.java:997)at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onComplete(Operators.java:2057)at reactor.core.publisher.Operators.complete(Operators.java:136)at reactor.core.publisher.MonoEmpty.subscribe(MonoEmpty.java:45)at reactor.core.publisher.Mono.subscribe(Mono.java:4150)at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onError(FluxOnErrorResume.java:103)at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.onError(FluxPeekFuseable.java:234)at reactor.core.publisher.MonoPeekTerminal$MonoTerminalPeekSubscriber.onError(MonoPeekTerminal.java:258)at reactor.core.publisher.FluxPeekFuseable$PeekConditionalSubscriber.onError(FluxPeekFuseable.java:903)at reactor.core.publisher.FluxMap$MapConditionalSubscriber.onError(FluxMap.java:259)at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onError(Operators.java:2062)at reactor.core.publisher.MonoFlatMap$FlatMapMain.secondError(MonoFlatMap.java:192)at reactor.core.publisher.MonoFlatMap$FlatMapInner.onError(MonoFlatMap.java:259)at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:142)at reactor.core.publisher.FluxOnErrorResume$ResumeSubscriber.onNext(FluxOnErrorResume.java:79)at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1815)at reactor.core.publisher.MonoCompletionStage.lambda$subscribe$0(MonoCompletionStage.java:82)at java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:774)at java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:750)at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488)at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1609)... 1 moreSuppressed: java.lang.Exception: #block terminated with an errorat reactor.core.publisher.BlockingSingleSubscriber.blockingGet(BlockingSingleSubscriber.java:99)at reactor.core.publisher.Mono.block(Mono.java:1703)at com.azure.security.keyvault.secrets.SecretClient.getSecretWithResponse(SecretClient.java:179)at com.azure.security.keyvault.secrets.SecretClient.getSecret(SecretClient.java:157)at com.gdca.aha.UpdateAha.run(UpdateAha.java:33)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:498)at com.microsoft.azure.functions.worker.broker.JavaMethodInvokeInfo.invoke(JavaMethodInvokeInfo.java:22)at com.microsoft.azure.functions.worker.broker.JavaMethodExecutorImpl.execute(JavaMethodExecutorImpl.java:54)at com.microsoft.azure.functions.worker.broker.JavaFunctionBroker.invokeMethod(JavaFunctionBroker.java:57)at com.microsoft.azure.functions.worker.handler.InvocationRequestHandler.execute(InvocationRequestHandler.java:33)at com.microsoft.azure.functions.worker.handler.InvocationRequestHandler.execute(InvocationRequestHandler.java:10)at com.microsoft.azure.functions.worker.handler.MessageHandler.handle(MessageHandler.java:45)at com.microsoft.azure.functions.worker.JavaWorkerClient$StreamingMessagePeer.lambda$onNext$0(JavaWorkerClient.java:92)at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)at java.util.concurrent.FutureTask.run(FutureTask.java:266)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)... 1 moreCaused by: java.lang.UnsupportedOperationExceptionat java.util.AbstractList.add(AbstractList.java:148)at java.util.AbstractList.add(AbstractList.java:108)at com.azure.identity.implementation.IdentityClient.authenticateWithAzurePowerShell(IdentityClient.java:489)at com.azure.identity.AzurePowerShellCredential.getToken(AzurePowerShellCredential.java:34)at com.azure.identity.ChainedTokenCredential.lambda$getToken$2(ChainedTokenCredential.java:55)at reactor.core.publisher.FluxFlatMap$FlatMapMain.onNext(FluxFlatMap.java:386)at reactor.core.publisher.FluxIterable$IterableSubscription.slowPath(FluxIterable.java:270)at reactor.core.publisher.FluxIterable$IterableSubscription.request(FluxIterable.java:228)at reactor.core.publisher.FluxFlatMap$FlatMapMain.drainLoop(FluxFlatMap.java:790)... 23 more

[alzimmermsft]

@markpope, unfortunately, this appears to be the same error as reported in this issue.

java.lang.UnsupportedOperationExceptionat java.util.AbstractList.add(AbstractList.java:148)at java.util.AbstractList.add(AbstractList.java:108)at com.azure.identity.implementation.IdentityClient.authenticateWithAzurePowerShell(IdentityClient.java:489)at

[markpope]

@alzimmermsft This seems like a very simple Java example from MSFT's azure-sdk-for-java. How can I monitor if this is going to be fixed in a future release?

[alzimmermsft]

Hi @markpope, I've submitted this PR which resolves the exception being seen. This will be included in the next release of azure-identity once it is merged.

[markpope]

@alzimmermsft Great, how can I know when azure-identity is released? Will the PR show this? Thanks.

[alzimmermsft]

Hi @markpope this will be available in azure-identity 1.3.5 which should be releasing in the next day or so.

[markpope]

Thanks! I'll retest then. Mark

…

On Mon, Aug 9, 2021 at 3:30 PM Alan Zimmer ***@***.***> wrote: Hi @markpope <https://github.com/markpope> this will be available in azure-identity 1.3.5 which should be releasing in the next day or so. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#23382 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABEDC2QXNASOYPFVCYCYZ5LT4BJHTANCNFSM5BU3CGHQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&utm_campaign=notification-email> .

[alzimmermsft]

@markpope the mentioned version of azure-identity has been released. Did it resolve the issue you were seeing?

[markpope]

Yes, the problem was resolved with the 1.3.5 release, thanks for great support! Mark

…

On Tue, Aug 17, 2021 at 8:46 AM Alan Zimmer ***@***.***> wrote: @markpope <https://github.com/markpope> the mentioned version of azure-identity has been released. Did it resolve the issue you were seeing? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#23382 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABEDC2XYNT7BVTAH3V7OZV3T5J75PANCNFSM5BU3CGHQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&utm_campaign=notification-email> .