Andrea Cosentino created CAMEL-26523:
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Summary: camel-alibaba-oss - with includeBody=false, closing an
unread object stream still downloads the rest of the object
Key: CAMEL-26523
URL: https://issues.apache.org/jira/browse/CAMEL-26523
Project: Camel
Issue Type: Improvement
Reporter: Andrea Cosentino
Follow-up of CAMEL-26261 ([PR
#28952|https://github.com/apache/camel/pull/28952]), which added
{{includeBody}} so the consumer can give the object content as a stream.
The SDK stream (alibabacloud-oss-v2) is an {{AbortableInputStream}} over
HttpCore's {{EofSensorInputStream}}, and {{close()}} reads the rest of the
object so the connection can be reused. So a route that does not read the body,
or a consumer that stops in the middle of a poll, still downloads every
remaining object in full. With the SDK's default HttpClient 5 transport, the
SDK's {{abort()}} does the same (a local test with a 256 MB object downloaded
all of it for both {{close()}} and {{abort()}}); only the opt-in HttpClient 4
transport aborts without reading. The component doc now documents this.
Options: abort for real on HttpClient 5 by unwrapping the stream
({{AbortableInputStream.unwarp()}}) and calling
{{EofSensorInputStream.abort()}}, which ties the component to the SDK's
transport internals; or ask the SDK to make its {{Abortable}} close the
response with {{CloseMode.IMMEDIATE}} and use {{abort()}} for unread streams
once it does.
_Claude Code on behalf of Andrea Cosentino (oscerd)_
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