mirror of
https://github.com/jmcorgan/fips.git
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Johnathan Corgan
66c268a564
Move examples/docker-network/ to testing/static/ and add testing/chaos/ as a new stochastic simulation harness. testing/static/ — Static 5-node test harness: - Fixed mesh, chain, and mesh-public topologies with docker compose - Manual test scripts (ping, iperf, netem) - Build script, config generation, key derivation testing/chaos/ — Stochastic network simulation: - Python orchestrator generating N-node FIPS meshes with dynamic network conditions, driven by reproducible YAML scenarios - Topology generation: random geometric, Erdos-Renyi, or chain graphs with BFS connectivity guarantee - Per-link netem: HTB classful qdiscs with u32 filters for per-peer impairment (delay, loss, jitter), stochastic mutation across configurable policy profiles - Per-link bandwidth pacing: HTB rate limiting with configurable tiers (1/10/100/1000 mbps) randomly assigned per edge - Link flaps: tc netem 100% loss with graph connectivity protection - Node churn: docker stop/start with netem re-application on restart, shared down_nodes tracking across all managers - Traffic generation: random iperf3 sessions between node pairs - Down-node guards: all docker exec callers check container liveness, auto-detect crashed containers via is_container_running() safety net - Log collection and post-run analysis (panics, errors, sessions, MMP metrics, tree reconvergence) - chaos.sh wrapper with --seed, --duration, --verbose, --list options - Four scenarios: smoke-10, chaos-10, churn-10, churn-20
62 lines
1.6 KiB
Python
62 lines
1.6 KiB
Python
"""CLI entry point: python -m sim <scenario.yaml>"""
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import argparse
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import logging
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import sys
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from .runner import SimRunner
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from .scenario import load_scenario
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def main():
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parser = argparse.ArgumentParser(
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prog="sim",
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description="FIPS stochastic network simulation",
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)
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parser.add_argument("scenario", help="Path to scenario YAML file")
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parser.add_argument(
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"-v", "--verbose", action="store_true", help="Enable debug logging"
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)
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parser.add_argument(
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"--seed", type=int, default=None,
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help="Override scenario seed",
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)
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parser.add_argument(
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"--duration", type=int, default=None,
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help="Override scenario duration in seconds",
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)
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args = parser.parse_args()
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level = logging.DEBUG if args.verbose else logging.INFO
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logging.basicConfig(
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level=level,
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format="%(asctime)s %(levelname)-5s %(name)s: %(message)s",
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datefmt="%H:%M:%S",
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)
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try:
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scenario = load_scenario(args.scenario)
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except (FileNotFoundError, ValueError) as e:
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print(f"Error loading scenario: {e}", file=sys.stderr)
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sys.exit(1)
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# Apply CLI overrides
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if args.seed is not None:
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scenario.seed = args.seed
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if args.duration is not None:
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if args.duration < 1:
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print("Error: --duration must be >= 1", file=sys.stderr)
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sys.exit(1)
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scenario.duration_secs = args.duration
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runner = SimRunner(scenario)
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result = runner.run()
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if result and result.panics:
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sys.exit(2)
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sys.exit(0)
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if __name__ == "__main__":
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main()
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