Add conflict tracing and pair-local repair

scripts/record_conflict_trace.py

@@ -0,0 +1,228 @@
+#!/usr/bin/env python3
+from __future__ import annotations
+
+import argparse
+import json
+from collections import Counter
+from dataclasses import asdict
+from datetime import datetime
+from pathlib import Path
+
+from inire.results import RoutingRunResult
+from inire.tests.example_scenarios import TRACE_PERFORMANCE_SCENARIO_RUNS, TRACE_SCENARIO_RUNS
+
+
+def _trace_registry(include_performance_only: bool) -> tuple[tuple[str, object], ...]:
+    if include_performance_only:
+        return TRACE_SCENARIO_RUNS + TRACE_PERFORMANCE_SCENARIO_RUNS
+    return TRACE_SCENARIO_RUNS
+
+
+def _selected_runs(
+    selected_scenarios: tuple[str, ...] | None,
+    *,
+    include_performance_only: bool,
+) -> tuple[tuple[str, object], ...]:
+    if selected_scenarios is None:
+        return (("example_07_large_scale_routing_no_warm_start", dict(TRACE_PERFORMANCE_SCENARIO_RUNS)["example_07_large_scale_routing_no_warm_start"]),)
+
+    registry = dict(TRACE_SCENARIO_RUNS + TRACE_PERFORMANCE_SCENARIO_RUNS)
+    allowed_standard = dict(_trace_registry(include_performance_only))
+    runs = []
+    for name in selected_scenarios:
+        if name in allowed_standard:
+            runs.append((name, allowed_standard[name]))
+            continue
+        if name in registry:
+            runs.append((name, registry[name]))
+            continue
+        valid = ", ".join(sorted(registry))
+        raise SystemExit(f"Unknown trace scenario: {name}. Valid scenarios: {valid}")
+    return tuple(runs)
+
+
+def _result_summary(run: RoutingRunResult) -> dict[str, object]:
+    return {
+        "total_results": len(run.results_by_net),
+        "valid_results": sum(1 for result in run.results_by_net.values() if result.is_valid),
+        "reached_targets": sum(1 for result in run.results_by_net.values() if result.reached_target),
+        "results_by_net": {
+            net_id: {
+                "outcome": result.outcome,
+                "reached_target": result.reached_target,
+                "report": asdict(result.report),
+            }
+            for net_id, result in run.results_by_net.items()
+        },
+    }
+
+
+def _build_payload(
+    selected_scenarios: tuple[str, ...] | None,
+    *,
+    include_performance_only: bool,
+) -> dict[str, object]:
+    scenarios = []
+    for name, run in _selected_runs(selected_scenarios, include_performance_only=include_performance_only):
+        result = run()
+        scenarios.append(
+            {
+                "name": name,
+                "summary": _result_summary(result),
+                "metrics": asdict(result.metrics),
+                "conflict_trace": [asdict(entry) for entry in result.conflict_trace],
+            }
+        )
+    return {
+        "generated_at": datetime.now().astimezone().isoformat(timespec="seconds"),
+        "generator": "scripts/record_conflict_trace.py",
+        "scenarios": scenarios,
+    }
+
+
+def _count_stage_nets(entry: dict[str, object]) -> int:
+    return sum(
+        1
+        for net in entry["nets"]
+        if net["report"]["dynamic_collision_count"] > 0
+    )
+
+
+def _canonical_component_pair(
+    net_id: str,
+    self_component_index: int,
+    other_net_id: str,
+    other_component_index: int,
+) -> tuple[tuple[str, int], tuple[str, int]]:
+    left = (net_id, self_component_index)
+    right = (other_net_id, other_component_index)
+    if left <= right:
+        return (left, right)
+    return (right, left)
+
+
+def _render_markdown(payload: dict[str, object]) -> str:
+    lines = [
+        "# Conflict Trace",
+        "",
+        f"Generated at {payload['generated_at']} by `{payload['generator']}`.",
+        "",
+    ]
+
+    for scenario in payload["scenarios"]:
+        lines.extend(
+            [
+                f"## {scenario['name']}",
+                "",
+                f"Results: {scenario['summary']['valid_results']} valid / "
+                f"{scenario['summary']['reached_targets']} reached / "
+                f"{scenario['summary']['total_results']} total.",
+                "",
+                "| Stage | Iteration | Conflicting Nets | Conflict Edges | Completed Nets |",
+                "| :-- | --: | --: | --: | --: |",
+            ]
+        )
+
+        net_stage_counts: Counter[str] = Counter()
+        edge_counts: Counter[tuple[str, str]] = Counter()
+        component_pair_counts: Counter[tuple[tuple[str, int], tuple[str, int]]] = Counter()
+        trace_entries = scenario["conflict_trace"]
+        for entry in trace_entries:
+            lines.append(
+                "| "
+                f"{entry['stage']} | "
+                f"{'' if entry['iteration'] is None else entry['iteration']} | "
+                f"{_count_stage_nets(entry)} | "
+                f"{len(entry['conflict_edges'])} | "
+                f"{len(entry['completed_net_ids'])} |"
+            )
+            seen_component_pairs: set[tuple[tuple[str, int], tuple[str, int]]] = set()
+            for edge in entry["conflict_edges"]:
+                edge_counts[tuple(edge)] += 1
+            for net in entry["nets"]:
+                if net["report"]["dynamic_collision_count"] > 0:
+                    net_stage_counts[net["net_id"]] += 1
+                for component_conflict in net["component_conflicts"]:
+                    pair = _canonical_component_pair(
+                        net["net_id"],
+                        component_conflict["self_component_index"],
+                        component_conflict["other_net_id"],
+                        component_conflict["other_component_index"],
+                    )
+                    seen_component_pairs.add(pair)
+            for pair in seen_component_pairs:
+                component_pair_counts[pair] += 1
+
+        lines.extend(["", "Top nets by traced dynamic-collision stages:", ""])
+        if net_stage_counts:
+            for net_id, count in net_stage_counts.most_common(10):
+                lines.append(f"- `{net_id}`: {count}")
+        else:
+            lines.append("- None")
+
+        lines.extend(["", "Top net pairs by frequency:", ""])
+        if edge_counts:
+            for (left, right), count in edge_counts.most_common(10):
+                lines.append(f"- `{left}` <-> `{right}`: {count}")
+        else:
+            lines.append("- None")
+
+        lines.extend(["", "Top component pairs by frequency:", ""])
+        if component_pair_counts:
+            for pair, count in component_pair_counts.most_common(10):
+                (left_net, left_index), (right_net, right_index) = pair
+                lines.append(f"- `{left_net}[{left_index}]` <-> `{right_net}[{right_index}]`: {count}")
+        else:
+            lines.append("- None")
+
+        lines.append("")
+
+    return "\n".join(lines)
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(description="Record conflict-trace artifacts for selected trace scenarios.")
+    parser.add_argument(
+        "--scenario",
+        action="append",
+        dest="scenarios",
+        default=[],
+        help="Optional trace scenario name to include. May be passed more than once.",
+    )
+    parser.add_argument(
+        "--include-performance-only",
+        action="store_true",
+        help="Include performance-only trace scenarios when selecting from the standard registry.",
+    )
+    parser.add_argument(
+        "--output-dir",
+        type=Path,
+        default=None,
+        help="Directory to write conflict_trace.json and conflict_trace.md into. Defaults to <repo>/docs.",
+    )
+    args = parser.parse_args()
+
+    repo_root = Path(__file__).resolve().parents[1]
+    output_dir = repo_root / "docs" if args.output_dir is None else args.output_dir.resolve()
+    output_dir.mkdir(exist_ok=True)
+
+    selected = tuple(args.scenarios) if args.scenarios else None
+    payload = _build_payload(selected, include_performance_only=args.include_performance_only)
+    json_path = output_dir / "conflict_trace.json"
+    markdown_path = output_dir / "conflict_trace.md"
+
+    json_path.write_text(json.dumps(payload, indent=2, sort_keys=True) + "\n")
+    markdown_path.write_text(_render_markdown(payload) + "\n")
+
+    if json_path.is_relative_to(repo_root):
+        print(f"Wrote {json_path.relative_to(repo_root)}")
+    else:
+        print(f"Wrote {json_path}")
+    if markdown_path.is_relative_to(repo_root):
+        print(f"Wrote {markdown_path.relative_to(repo_root)}")
+    else:
+        print(f"Wrote {markdown_path}")
+
+
+if __name__ == "__main__":
+    main()