'cloudWatchAsyncClient' threw exception with message: null

[rolfhub]

Type: Bug

Component:
CloudWatch

Describe the bug
Our App runs in AWS ECS with EC2 as capacity provider (Spring Boot 3.1.5, JDK 17). After the update from spring-cloud-aws-starter 3.0.2 to 3.0.3 we get the follwing exception:

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [software.amazon.awssdk.services.cloudwatch.CloudWatchAsyncClient]: Factory method 'cloudWatchAsyncClient' threw exception with message: null
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:171)
	at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650)
	... 116 common frames omitted
Caused by: java.lang.UnsupportedOperationException: null
	at software.amazon.awssdk.core.SdkServiceClientConfiguration$Builder.authSchemes(SdkServiceClientConfiguration.java:169)
	at software.amazon.awssdk.core.SdkServiceClientConfiguration.<init>(SdkServiceClientConfiguration.java:43)
	at software.amazon.awssdk.awscore.AwsServiceClientConfiguration.<init>(AwsServiceClientConfiguration.java:35)
	at software.amazon.awssdk.services.cloudwatch.CloudWatchServiceClientConfiguration.<init>(CloudWatchServiceClientConfiguration.java:31)
	at software.amazon.awssdk.services.cloudwatch.CloudWatchServiceClientConfiguration.<init>(CloudWatchServiceClientConfiguration.java:29)
	at software.amazon.awssdk.services.cloudwatch.CloudWatchServiceClientConfiguration$BuilderImpl.build(CloudWatchServiceClientConfiguration.java:104)
	at software.amazon.awssdk.services.cloudwatch.DefaultCloudWatchAsyncClientBuilder.initializeServiceClientConfig(DefaultCloudWatchAsyncClientBuilder.java:57)
	at software.amazon.awssdk.services.cloudwatch.DefaultCloudWatchAsyncClientBuilder.buildClient(DefaultCloudWatchAsyncClientBuilder.java:43)
	at software.amazon.awssdk.services.cloudwatch.DefaultCloudWatchAsyncClientBuilder.buildClient(DefaultCloudWatchAsyncClientBuilder.java:28)
	at software.amazon.awssdk.core.client.builder.SdkDefaultClientBuilder.build(SdkDefaultClientBuilder.java:157)
	at io.awspring.cloud.autoconfigure.metrics.CloudWatchExportAutoConfiguration.cloudWatchAsyncClient(CloudWatchExportAutoConfiguration.java:72)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.base/java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:139)
	... 117 common frames omitted

[maxjiang153]

Would you provide a demo code that can reproduce this issue?

[rolfhub]

The code in this repository produces the same exception when executing ./gradlew test : https://github.com/rolfhub/spring-cloud-aws-948 in DemoApplicationTests. When switching spring-cloud-aws-starter in build.gradle back to 3.0.2 the test runs successfully again.

[maciejwalkowiak]

There is some incompatibility with AWS SDK version you included and Spring Cloud AWS.

I recommend using BOM from Spring Cloud AWS to manage dependencies like this:

dependencies {
  implementation platform("io.awspring.cloud:spring-cloud-aws-dependencies:3.0.3")
  implementation 'io.awspring.cloud:spring-cloud-aws-starter'
  implementation 'io.micrometer:micrometer-registry-cloudwatch2'
}

With this change, your example works as expected.