using aws s3 outbound adapter in spring boot application,trying to upload files in s3 bucket. would like to check if bucket available before uploading file. if bucket is not available need to throw error.
suggest on this.
<int-aws:s3-outbound-gateway id="FileChannelS3"
request-channel="filesOutS3CChainChannel"
reply-channel="filesArcChannel"
transfer-manager="transferManager"
bucket-expression="headers.TARGET_BUCKET"
command="UPLOAD">
<int-aws:request-handler-advice-chain>
<ref bean="retryAdvice" />
</int-aws:request-handler-advice-chain>
</int-aws:s3-outbound-gateway>