Module scraper Roadmap

Scraper Module Roadmap

Current Status

Production-capable scraper runtime exists for source seeding, fetch/render, result extraction, quality evaluation, and provenance-aware metadata write behavior.

Completed (Q3 2026)

• hardening fetch/parse/evaluate edge behavior under noisy source content (Target: Q3 2026) — evidence: include/scraper/scraper_diagnostics.h, include/scraper/scraper_burst_controller.h
• improving diagnostics consistency across crawl and write-path fault classes (Target: Q3 2026) — evidence: include/scraper/scraper_diagnostics.h
• stabilizing benchmark-backed release guardrails for extraction-oriented scraper paths (Target: Q3 2026) — evidence: benchmarks/scraper/bench_scraper_release_gates.cpp

Planned Features

Short-term (3-6 months)

• tighten deterministic behavior under sustained multi-source crawling bursts (Target: Q4 2026) — evidence: include/scraper/scraper_burst_controller.h, tests/scraper/test_scraper_burst_hardening_focused.cpp (SCR-17..20)
• expand stress coverage for JS-render and API pagination edge scenarios (Target: Q4 2026) — evidence: include/scraper/scraper_render_contract.h, tests/scraper/test_scraper_render_pagination_focused.cpp (SCR-21..24)
• improve operator-facing diagnostics for scrape-run incident triage (Target: Q4 2026) — evidence: include/scraper/scraper_run_summary.h, tests/scraper/test_scraper_run_summary_focused.cpp (SCR-25..28)

Mid-term (6-12 months)

• re-baseline p95/p99 envelopes for extraction and write-sensitive paths (Target: Q1 2027) — evidence: benchmarks/scraper/bench_scraper_release_gates.cpp (GATE-SCR-05..06)
• broaden benchmark depth for scraper-native pipeline scenarios (Target: Q1 2027) — evidence: benchmarks/scraper/bench_scraper_pipeline_depth.cpp (PIPE-01..04)
• harden long-run reliability under sustained scraping ingestion pressure (Target: Q1 2027)

Implementation Phases

Phase 1: Design / API Contract

• freeze scrape pipeline and writer contracts for current major line (Target: Q3 2026) — evidence: include/scraper/scraper_api_contract.h
• define explicit error taxonomy for scraper failure classes (Target: Q3 2026) — evidence: include/scraper/scraper_api_contract.h

Phase 2: Core Implementation

• complete hardening for fetch/search/evaluator internals (Target: Q4 2026) — evidence: include/scraper/scraper_diagnostics.h
• align metadata writer behavior to bounded runtime contracts (Target: Q4 2026) — evidence: include/scraper/scraper_diagnostics.h § fail-safe helpers

Phase 3: Error Handling and Edge Cases

• standardize fail-safe behavior for fetch, parse, and write-path faults (Target: Q4 2026) — evidence: include/scraper/scraper_diagnostics.h faultClassOf()/defaultSeverityOf()
• unify diagnostics across crawler/evaluator/writer incidents (Target: Q4 2026) — evidence: include/scraper/scraper_diagnostics.h IScraperDiagnosticSink + ScraperDiagnosticEvent

Phase 4: Tests

• expand focused regressions for malformed-source and pagination edge scenarios (Target: Q4 2026) — evidence: tests/scraper/test_scraper_contract_hardening_focused.cpp
• extend deterministic stress fixtures for burst crawl and extraction workloads (Target: Q4 2026) — evidence: tests/scraper/test_scraper_contract_hardening_focused.cpp

Phase 5: Performance and Hardening

• lock benchmark-backed release gates for extraction and processor paths (Target: Q4 2026) — evidence: benchmarks/scraper/bench_scraper_release_gates.cpp
• validate p95/p99 and throughput behavior against release baselines (Target: Q4 2026) — evidence: benchmarks/scraper/bench_scraper_release_gates.cpp

Phase 6: Documentation and Acceptance

• core scraper module docs aligned to source-verifiable behavior
• roadmap/future planning separated from historical changelog entries

Production Readiness Checklist

• core scraper surfaces documented and source-verified
• module-level security and failure behavior documented
• benchmark mapping documented in performance expectations
• remaining hardening tasks closed for fetch/parse/write edge paths — evidence: include/scraper/scraper_diagnostics.h
• release benchmark stabilization complete

Known Issues and Limitations

• runtime behavior depends on source quality, render mode, and crawl policy configuration.
• selected malformed-content and burst edge scenarios need continued hardening.
• benchmark depth should continue expanding for dedicated scraper pipeline workflows.

Breaking Changes

No breaking scraper contract planned. Any contract-breaking change requires migration notes and changelog entry before merge.

Program Execution Model — Wave Context

This module is a contributing module in the program-level Wave A → B → C → D execution model. It does not own a primary wave deliverable but must remain release_critical-green throughout all waves and must deliver Wave D operability improvements in Q1 2027. See [[../../ROADMAP.md|ROADMAP]] for the full wave model and exit criteria.

Wave D Contribution for scraper

• Deliver or validate distributed tracing, high-cardinality stress coverage, exporter reliability, and operator remediation hints as applicable to this module (Target: Q1 2027)
• Contribute to or validate long-duration soak test coverage for this module's primary paths (Target: Q1 2027)
• Ensure runbook coverage for operator-critical scenarios in this module (Target: Q1 2027)

Cross-Wave Requirements

• release_critical CI must remain green on develop throughout all waves (Target: ongoing)
• p95/p99 benchmarks must be refreshed on representative hardware before Wave D sign-off (Target: Q1 2027)
• No behavioral regression may be introduced into modules in Wave A/B/C scope from changes in this module.

Program-Level Success Criteria (contribution)

• This module's distributed/acceleration paths fail closed (Target: Q1 2027)
• Benchmark-backed p95/p99 baselines exist on representative hardware (Target: Q1 2027)
• Operator-critical paths have diagnostics, alerts, and runbooks (Target: Q1 2027)