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https://issues.apache.org/jira/browse/CAMEL-24392?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gaelle Fournier reassigned CAMEL-24392:
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Assignee: Gaelle Fournier
> BacklogTracerRouteAdvice drains non-re-readable InputStream body before
> stream caching
> --------------------------------------------------------------------------------------
>
> Key: CAMEL-24392
> URL: https://issues.apache.org/jira/browse/CAMEL-24392
> Project: Camel
> Issue Type: Bug
> Affects Versions: 4.22.0, 4.18.5
> Reporter: Gaelle Fournier
> Assignee: Gaelle Fournier
> Priority: Major
>
> CAMEL-22858 introduced {{BacklogTracerRouteAdvice}} in
> {{CamelInternalProcessor.addRouteLifecycleAdvice()}}. This route-level advice
> runs _before_ any channel-level advice, including {{StreamCachingAdvice}}.
> Its {{before()}} method calls {{MessageHelper.dumpAsJSonObject()}} on the
> exchange message.
> When the body is a {{WrappedFile}} wrapping a non-re-readable {{InputStream}}
> (e.g. SFTP/FTP with {{streamDownload(true)}}), and
> {{BacklogTracer.bodyIncludeFiles}} is {{true}} (the default),
> {{extractValueForLogging()}} type-converts the {{WrappedFile}} to {{String}},
> draining the underlying {{InputStream}}. {{StreamCachingAdvice}} then caches
> an already-exhausted stream, resulting in an empty body.
> In 4.17, the only tracer dump was the per-node {{BacklogTracerAdvice}} in
> {{DefaultChannel}}, which runs _after_ {{StreamCachingAdvice}} and always
> read a re-readable {{InputStreamCache}}.
> Triggered when {{camel.main.profile=dev}} (sets both
> {{backlogTracingStandby}} and {{messageHistory}} to {{true}}), which includes
> Quarkus dev mode.
> See:
> https://camel.zulipchat.com/#narrow/channel/257302-camel-quarkus/topic/.60camel-quarkus-ftp.60.20and.20.60.2EstreamDownload.28true.29.60.20-.3E.20no.20body/with/616317948
> *Workaround*
> {code}
> camel.trace.body-include-files=false
> {code}
> *Reproducer*
> [https://github.com/turing85/quarkus-camel-sftp-no-body] (run with {{mvn
> quarkus:dev}})
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