Do not create S3 CRT client if aws-crt library is not on the classpath. (#1359)

Fixes #1358

Author: maciejwalkowiak

spring-cloud-aws-autoconfigure/src/main/java/io/awspring/cloud/autoconfigure/s3/S3CrtAsyncClientAutoConfiguration.java

@@ -33,6 +33,7 @@
 import org.springframework.context.annotation.Bean;
 import software.amazon.awssdk.auth.credentials.AwsCredentialsProvider;
 import software.amazon.awssdk.crt.s3.S3Client;
+import software.amazon.awssdk.http.crt.AwsCrtHttpClient;
 import software.amazon.awssdk.services.s3.S3AsyncClient;
 import software.amazon.awssdk.services.s3.S3CrtAsyncClientBuilder;
 
@@ -44,7 +45,7 @@
  * @since 3.0
  */
 @AutoConfiguration
-@ConditionalOnClass({ S3Client.class, S3AsyncClient.class })
+@ConditionalOnClass({ S3Client.class, S3AsyncClient.class, AwsCrtHttpClient.class})
 @EnableConfigurationProperties({ S3Properties.class })
 @ConditionalOnProperty(name = "spring.cloud.aws.s3.enabled", havingValue = "true", matchIfMissing = true)
 @AutoConfigureBefore(S3TransferManagerAutoConfiguration.class)

spring-cloud-aws-autoconfigure/src/test/java/io/awspring/cloud/autoconfigure/s3/S3CrtAsyncClientAutoConfigurationTests.java

@@ -31,6 +31,7 @@
 import software.amazon.awssdk.core.client.config.SdkClientConfiguration;
 import software.amazon.awssdk.core.client.config.SdkClientOption;
 import software.amazon.awssdk.http.async.SdkAsyncHttpClient;
+import software.amazon.awssdk.http.crt.AwsCrtHttpClient;
 import software.amazon.awssdk.services.s3.S3AsyncClient;
 import software.amazon.awssdk.services.s3.endpoints.S3ClientContextParams;
 import software.amazon.awssdk.services.s3.internal.crt.S3NativeClientConfiguration;
@@ -117,6 +118,14 @@ void handlesMissingS3AsyncClient() {
 		});
 	}
 
+	@Test
+	void handlesMissingS3CrtLibrary() {
+		contextRunner.withClassLoader(new FilteredClassLoader(AwsCrtHttpClient.class)).run(context -> {
+			assertThat(context).hasNotFailed();
+			assertThat(context).doesNotHaveBean(S3AsyncClient.class);
+		});
+	}
+
 	private static S3NativeClientConfiguration s3NativeClientConfiguration(S3AsyncClient client) {
 		ConfiguredAwsClient configuredClient = new ConfiguredAwsClient(client);
 		SdkAsyncHttpClient sdkAsyncHttpClient = configuredClient.getAsyncHttpClient();