[log] Add debug logging to jq middleware filter functions#6715
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Add logMiddleware.Printf calls to CompileToolResponseFilter, tryApplyToolResponseFilter, and rewriteFilteredTextPayload in internal/middleware/jqschema.go. These functions previously had no debug instrumentation despite being key entry points in the tool response filter pipeline. The new logs help trace: - When a filter expression is compiled and its length (compile entry/exit) - Whether a response filter is active per tool call (filter present/absent) - Text payload rewrite size when filtered content is applied Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Adds
logMiddleware.Printfcalls to three functions ininternal/middleware/jqschema.gothat previously had no debug instrumentation:Changes
CompileToolResponseFilter: logs filter expression length on entry, and confirms successful compilation on exit — useful for diagnosing filter parse/compile failurestryApplyToolResponseFilter: logs the tool name, query ID, and whether a filter is active — helps distinguish between filtered and unfiltered tool call pathsrewriteFilteredTextPayload: logs the length of the filtered text being written back — provides visibility into the rewrite step when a tool response filter is appliedWhy these functions?
These are key entry points in the tool response filter pipeline. The surrounding code (
wrapToolHandler,savePayload,applyJqSchema) already has thorough logging, but these intermediate helpers were opaque when tracing filter-related issues underDEBUG=middleware:*.Validation
make format build lint test-unit test-integration— all pass ✓Warning
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