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fix(studio): keep thread metadata and state updates atomic - #220
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yuluo-yx
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Oct 23, 2026
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Reviewed the atomic thread record and generation checks with the delete/recreate regression tests. The frontend dependency audit failure is tracked separately from this fix.
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Describe what this PR does / why we need it
Contributing to ARGI: Studio thread metadata and state are stored in one record per key, so create, update and delete can no longer leave orphaned or stale state.
Does this pull request fix one issue?
Fixes #193
Describe how you did it
ThreadServiceImplwith a singleConcurrentHashMap<String, ThreadRecord>; every operation is one atomic map call.updateThreadStateonly applies to the instance it observed, so it is dropped after delete and cannot pollute a re-created thread with the same ID.getThreadStatereturns a copy. HTTP endpoints, DTOs and the encoded key format are unchanged.Describe how to verify it
./mvnw -pl :argi-studio -am test -Dtest=ThreadServiceImplTest. New latch-based tests cover update/delete, delete/recreate and create/delete interleavings; the first two fail on the previous implementation.Special notes for reviews
Storage stays in memory; no database is introduced.