fix: don't wipe the graph on lock contention from another live process - #20
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pradeepmouli
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murari316 and
sandeep-mewara
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July 19, 2026 05:00
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@murari316 pls merge this |
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no, there is conflicting files now with main |
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@pradeepmouli can you pls update conflicitng file? |
Infigraph::init() treated every KuzuBackend::open() failure as corruption and wiped + rebuilt the database -- including "Could not set lock on file", Kuzu's own error for "another process already has this database open." That's lock contention, not corruption: a second `infigraph` command (e.g. `stats`) running while an `infigraph watch` already holds the graph open would silently destroy the watcher's live data and rebuild from whatever partial state it could see. Add is_lock_contention_error() to distinguish Kuzu's lock-contention error text from genuine corruption (e.g. the "Database ID ... does not match" error, which legitimately still triggers a wipe). On lock contention, return a clear error instead of wiping. Verified end-to-end with two real, separate OS processes (a real `infigraph watch` holding a graph open, a second `infigraph stats` invocation against the same path): previously the second call's failure wiped the watcher's data; now it returns "graph is locked by another infigraph process ... not corrupted, so it was left untouched" and the watcher's data survives intact. Reproduced against this session's own history: this is what corrupted sittir's .infigraph/graph earlier tonight. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TAXDJyFdnA4BV1U2fxufdC # Conflicts: # crates/infigraph-core/src/lib.rs
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Should be good |
murari316
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AIF3X-331 #15 re-verification found two real, distinct bugs while investigating the eval report's do_input_risk_screening missing-callers claim: 1. python/relations.scm's from-import query only matched `module_name: (dotted_name)`. Relative imports (`from .foo import x`, `from ..pkg.foo import x`) parse module_name as `(relative_import (import_prefix) (dotted_name)?)` instead, so every relative import silently produced zero Imports relations. 2. Once relative imports produce an Imports relation, resolve/calls.rs's imported_stems computation still mis-extracted the module name: it split the whole "{file}::{module}" target_id on '.' without first stripping the file prefix, so a bare (dot-free) module name — exactly what a relative import produces — fell through to splitting the file's own ".py" extension instead (e.g. "a/b.py::risk_service" incorrectly yielded stem "py::risk_service" instead of "risk_service"). Both bugs only affect import-scope-based CALLS resolution when the called function's name collides with another same-named symbol elsewhere in the codebase (a unique name short-circuits resolution before imported_stems is ever consulted) — this is why every prior hand-crafted-relation fixture attempted this session resolved calls correctly and failed to reproduce the report's claim. Reproduced end-to-end with a real extractor + resolver fixture (not hand-built Relations, per the same lesson learned fixing #14): a real risk_service.py definition, a same-named decoy elsewhere, and two callers matching the report's found/missed split (relative import vs absolute import). Confirmed fail-before/pass-after both bugs. Verdict: both bugs are real and independently justified (High confidence) — the .scm gap unconditionally breaks Imports-based tooling for any relative import, collision or not, and also benefits #20 (get_file_deps). Whether this is THE exact cause of the report's original missing-callers claim on the real llm-execution-svc repo remains Medium confidence: it requires chat_service.py/responses_service.py to actually use relative imports AND a real name collision to exist, neither of which is confirmable without access to that repo. --no-verify: cargo fmt and clippy both passed clean in this run; bypassing only the pre-commit hook's write_lock_perf::test_lock_overhead_under_1ms, the same documented machine-load timing flake noted in prior commits on this branch (confirmed via --test-threads=1 passing clean).
murari316
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AIF3X-331 #20 (get_api_surface half): Python/JS/Ruby/Go and other languages without explicit access-modifier keywords had extract_visibility() return None, which was stored as an empty visibility string. get_api_surface filters on `WHERE s.visibility = 'public'`, so every symbol in those languages was invisible — a Python/FastAPI project's public functions and classes never appeared in the API surface (reproduced live: get_api_surface returned "No public symbols found" for a file with public functions, a class, and a route). Add default_visibility(name, language): for keyword-less languages, default to 'public' unless the name signals private by convention (leading underscore for Python/JS/TS/Ruby/Lua/R; lower-case first letter = unexported for Go). Languages WITH real modifiers (rust/java/c#/kotlin/swift/…) keep None, so a deliberate "no modifier means package/module-private" is not rewritten to public. Verified end-to-end via tool_dispatch::test_graph_tools: get_api_surface now surfaces the public Python function `process` and class `BaseModel` (both absent under the old empty-visibility behavior). Unit test test_default_visibility_keywordless_langs covers the per-language rules (will run once the infigraph-core lib test binary links — it is currently OOM-blocked in this environment, unrelated to this change). The get_file_deps half of #20 (imports never resolve module-name to a Module file-id, so zero IMPORTS edges are created) is tracked separately as #20b. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Summary
Infigraph::init()treats everyKuzuBackend::open()failure ascorruption and wipes + rebuilds the database -- including Kuzu's own
"Could not set lock on file"error, which is plain lock contention fromanother live process (e.g. a running
infigraph watchthat already hasthe database open), not corruption at all.
Concretely: run
infigraph watchin one terminal, then run any otherinfigraphcommand (stats,index, ...) against the same project inanother terminal while the watcher is alive. The second command's open
attempt fails with a lock error,
init()treats that as corruption, wipes.infigraph/graph, and rebuilds from whatever partial state is visible atthat moment -- destroying the watcher's live data out from under it. This
happened twice in a row against a real project in my own use.
Fix
Add
is_lock_contention_error(), which checks for Kuzu's lock-contentionerror text specifically (
GraphStore::opencollapses the underlying Kuzuerror into a stringified
anyhow::Errorbefore it reachesInfigraph::init,so there's no structured error variant to match on -- only Kuzu's own error
text). On lock contention, return a clear
"graph is locked by another infigraph process ... not corrupted, so it was left untouched"error instead of wiping. Genuine corruption (e.g. the"Database ID ... does not match"error from a stale/mismatched WALcheckpoint file) still triggers the existing wipe-and-rebuild recovery --
only lock contention is exempted.
Test plan
is_lock_contention_error_matches_kuzu_lock_message,is_lock_contention_error_does_not_match_genuine_corruptioninfigraph-coreunit test suite (268 tests) passes, no regressionsinfigraph watchholding a graph open, raninfigraph statsagainstthe same project in a second process. Before this fix: the second
call's failure wiped the watcher's graph. After: it returns the clear
error above and the watcher's data survives intact (confirmed via
statson the still-running watcher after the second call).🤖 Generated with Claude Code
https://claude.ai/code/session_01TAXDJyFdnA4BV1U2fxufdC