processmanager: add TraceInterceptor extension point#1383
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christos68k
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May 1, 2026
Add an optional TraceInterceptor that ProcessManager.HandleTrace invokes after symbolization and before reporting. Returning true from the interceptor consumes the trace and the default reporting path is skipped; returning false lets HandleTrace report it normally. Consumers that need to report intercepted traces are expected to do so via their own TraceReporter — the hook is intentionally a one-way handoff, not a passthrough callback. There is no behavior change when no interceptor is installed. The interceptor is configured via ProcessManager.SetInterceptor, with a pass-through Tracer.SetInterceptor for callers using the Tracer wrapper.
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RFAL, thanks! |
christos68k
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May 4, 2026
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christos68k
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Summary
Adds an optional
TraceInterceptorextension point toProcessManager. The interceptor is invoked fromHandleTraceafter symbolization and before reporting; returningtrueconsumes the trace andHandleTraceskips its default reporting path, returningfalseletsHandleTracereport it normally. There is no behavior change when no interceptor is installed.The hook is intentionally a one-way handoff, not a passthrough callback. Consumers that need to report intercepted traces are expected to do so via their own downstream mechanism.
Motivation
Some symbolization sources arrive on a separate channel from the eBPF stack walker and only become available some time after the original sample. Today there is no clean way to plug additional symbolization or merging into the post-symbolization, pre-report path without forking the project. This change adds a single, narrowly-scoped hook so out-of-tree code can: