Implement Go graph indexing worker (facts + vectors split) for graphrag-go
Session from pi-web on Hugging Face by woxQAQ · MIT · condensed by Coders Talk
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27msession
0interventions
GOAL
Port the Python ApeRAG graph worker's derive/sync design to the Go graphrag-go repo, then split it into separate facts and vectors workers matching the modality worker pattern.
- +0Prompt · +0All dependencies of the Python graph worker (aperag/indexing/graph.py) are done; implement the graph worker in the Go indexing/ package.
- +0mAgent did · +0mExplored both repos: read the Python graph.py reference implementation and every relevant Go file (interface.go, graph.go, vector.go, summary.go, reconciler.go, lineage store, compactor, curation runner) to map the expected worker surface before writing code.
- +7mAgent did · +7mWrote a new indexing/graph_worker.go (~567 lines) implementing GraphModality with derive (chunks.jsonl -> kg.jsonl via extractor) and sync (lineage cleanup/rebuild, optional compaction/vector upsert), reusing existing store/vector contracts.
- +7mFail · +7mgo test failed: graphstore.RelationWithLineage has no field or method Key, used in two places in the new worker.
- +7mAgent did · +7mFixed the relation key usage, added indexing/graph_worker_test.go (~407 lines) covering derive artifact writes and lineage sync, and got `go test ./indexing` and the broader graph package tests passing.
- +19mPrompt · +19m还有 factsworker和vectorworker没实现 (facts worker and vector worker are still not implemented).
- +19mAgent did · +19mSplit the graph worker into GraphFactsWorker (writes facts/lineage only, clears descriptions) and GraphVectorsWorker (reuses the facts kg.jsonl artifact, only runs the vector phase), refactored shared lineage-phase helpers, added new tests, and reconfirmed `go test ./indexing ./graph/curation ./graph/store/...` passing.
- +27mOutcome · +27mRename cleanup verified (graph.go -> kg.go), full `go test ./...` passes across the repo; three worker types (GraphModality, GraphFactsWorker, GraphVectorsWorker) implemented and tested; session ends with the developer asking the agent to explain the original parse/index pipeline.
VERDICT
Next time I'd upfront ask for the facts/vector split explicitly instead of letting the agent build the monolithic GraphModality first and then retrofitting — that second prompt ('还有 factsworker和vectorworker没实现') is what actually forced the right architecture. Letting it explore both the Python reference and the existing Go store/vector contracts before writing any code paid off, since the compile error it hit (relation.Key) was a small, quickly-fixed mismatch rather than a design problem.