fix: stop returning exception text to remote A2A peers - #1396
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`AgentExecutor#failedMessage` built the failure message sent back to the peer out of `Throwable#getMessage`. Exception text routinely contains absolute paths, class and module locations, configuration values and echoed request payloads, so a peer could map the host by provoking errors. It now logs the throwable under a short opaque id and sends only a fixed summary plus that id. It also took over the logging that used to happen at the call site, so the id in the response is the id in the log. Set `ADK_DEBUG_ERRORS=1` to get the detail back when debugging locally. PiperOrigin-RevId: 959895666
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fix: stop returning exception text to remote A2A peers
AgentExecutor#failedMessagebuilt the failure message sent back to the peerout of
Throwable#getMessage. Exception text routinely contains absolutepaths, class and module locations, configuration values and echoed request
payloads, so a peer could map the host by provoking errors.
It now logs the throwable under a short opaque id and sends only a fixed
summary plus that id. It also took over the logging that used to happen at the
call site, so the id in the response is the id in the log.
Set
ADK_DEBUG_ERRORS=1to get the detail back when debugging locally.