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@gscdump/engine

v2.0.5

Published

Append-only Parquet/DuckDB storage engine + planner + adapters for the gscdump pipeline. Node + edge runtimes; opt-in heavy peers.

Readme

@gscdump/engine

npm version npm downloads license

Append-only Parquet/DuckDB storage engine + planner + adapters for the gscdump pipeline. Node + edge runtimes; opt-in heavy peers.

Owns the storage runtime, planner, schema, and adapters that were previously bundled into gscdump. Edge consumers stay on gscdump; anything that needs to read/write Parquet, run the DuckDB executor, or attach a snapshot lives here.

Install

npm install @gscdump/engine

Optional peers (install only what your runtime needs):

  • @duckdb/duckdb-wasm — DuckDB-WASM executor (browser + node-blocking shim).
  • hyparquet, hyparquet-writer — pure-JS Parquet codec for environments without a native build.

Subpath exports

| Subpath | Purpose | |---|---| | @gscdump/engine | Storage runtime: createStorageEngine, codec/executor factories, storage contracts. | | @gscdump/engine/contracts | StorageEngine, Row, TableName, WriteCtx, ManifestEntry, ... | | @gscdump/engine/schema | SCHEMAS, allTables, inferTable, column metadata. | | @gscdump/engine/planner | resolveToSQL, enumeratePartitions, partition planning. | | @gscdump/engine/ingest | GSC row → storage row helpers (createRowAccumulator, transformGscRow). | | @gscdump/engine/ingest-accumulator | Stateful ingest flushing behind injected storage and recovery hooks. | | @gscdump/engine/sql | SQL literal binding helpers (bindLiterals, formatLiteral). | | @gscdump/engine/sql-fragments | Reusable SQL fragments shared across analyzers. | | @gscdump/engine/rollups | Pre-aggregated rollup contracts + helpers. | | @gscdump/engine/entities | Parquet-backed entity stores and their record contracts. | | @gscdump/engine/entity-keys | Pure entity object-key and URL-hash helpers, with no Parquet runtime. | | @gscdump/engine/resolver | Dialect-neutral SQL composition: ResolverAdapter, pgResolverAdapter, resolveToSQL. | | @gscdump/engine/scope | Multi-tenant scope predicates. | | @gscdump/engine/arrow | Apache Arrow utilities for engine result conversion. | | @gscdump/engine/node | Node-only DuckDB handle. | | @gscdump/engine/filesystem | Node-only DataSource + ManifestStore adapters. | | @gscdump/engine/hyparquet | Pure-JS ParquetCodec. | | @gscdump/engine/r2 | Cloudflare R2 DataSource (structurally typed against R2Bucket). | | @gscdump/engine/iceberg | Edge-safe GSC dataset schemas, catalog wrappers, and append sink. Generic Iceberg APIs live in @gscdump/lakehouse. | | @gscdump/engine/sink-node | Node-only Iceberg overwrite/delete recovery writer. | | @gscdump/engine/source | Query-source contracts and factories. |

Stability

| Surface | Stability | |---|---| | createStorageEngine and storage contracts (StorageEngine, Row, WriteCtx, ...) | Public | | Adapters (/node, /filesystem, /hyparquet, /r2, /r2-manifest) | Public | | Planner (resolveToSQL, enumeratePartitions) | Public | | Schema (SCHEMAS, allTables, ...) | Public | | Internals reached through @gscdump/engine/<file> paths not listed above | Private — may break between minors |

Related

License

MIT