Files
DD3-LoRa-Bridge-MultiSender/tools/hil/run_fault_suite.py
T

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4.3 KiB
Python

#!/usr/bin/env python3
from __future__ import annotations
import argparse
import json
import time
from hil_common import PairCapture, load_config, main_guard, new_artifact_dir, pair_ports
from report import generate
FAULTS = [
"drop_chunk",
"duplicate_chunk",
"corrupt_chunk",
"suppress_ack",
"delay_ack",
"wrong_ack_batch",
]
def main() -> int:
parser = argparse.ArgumentParser(description="Run all one-shot LoRa HIL faults in one approved capture")
parser.add_argument("--fault", action="append", choices=FAULTS,
help="run only this fault (repeatable); defaults to all")
parser.add_argument("--seconds", type=float, default=600)
parser.add_argument("--arm-after", type=float, default=10)
parser.add_argument("--case-timeout", type=float, default=100)
args = parser.parse_args()
faults = args.fault or FAULTS
config = load_config()
ports = pair_ports(config, "access")
baud = int(config.get("hil", {}).get("baud", 115200))
artifact = new_artifact_dir("fault-suite")
state = {"index": 0, "armed_at": None, "last_command_at": None, "armed_confirmed": False,
"injected_ns": None, "recovered_at": None, "cases": []}
def arm(capture: PairCapture, now: float) -> None:
fault = faults[state["index"]]
target = "sender" if fault.endswith("chunk") else "receiver"
command = "delay_ack:1000" if fault == "delay_ack" else fault
capture.send_fault(target, command)
state["armed_at"] = now
state["last_command_at"] = now
state["armed_confirmed"] = False
state["injected_ns"] = None
state["recovered_at"] = None
print(f"Armed {fault} on {target}", flush=True)
def finish_case(capture: PairCapture, now: float, recovered: bool) -> None:
fault = faults[state["index"]]
state["cases"].append({"fault": fault, "recovered": recovered})
state["index"] += 1
if state["index"] >= len(faults):
capture.stop.set()
return
arm(capture, now)
def tick(elapsed: float, capture: PairCapture) -> None:
now = time.monotonic()
if state["index"] >= len(faults):
capture.stop.set()
return
if state["armed_at"] is None:
if elapsed >= args.arm_after:
arm(capture, now)
return
fault = faults[state["index"]]
snapshot = list(capture.events)
armed = [event for event in snapshot if event.get("event") == "fault_armed" and
event.get("fault") == fault]
if armed:
state["armed_confirmed"] = True
if not state["armed_confirmed"] and now - state["last_command_at"] >= 5:
target = "sender" if fault.endswith("chunk") else "receiver"
command = "delay_ack:1000" if fault == "delay_ack" else fault
capture.send_fault(target, command)
state["last_command_at"] = now
print(f"Re-sent {fault}; awaiting device arm acknowledgement", flush=True)
injections = [event for event in snapshot if event.get("event") == "fault_injected" and
event.get("fault") == fault]
if injections and state["injected_ns"] is None:
state["injected_ns"] = min(event.get("host_time_ns", 0) for event in injections)
if state["injected_ns"]:
recovered = any(event.get("event") == "ack_rx" and event.get("ok") is True and
event.get("host_time_ns", 0) > state["injected_ns"] for event in snapshot)
if recovered:
if state["recovered_at"] is None:
state["recovered_at"] = now
elif now - state["recovered_at"] >= 3:
finish_case(capture, now, True)
return
if now - state["armed_at"] >= args.case_timeout:
finish_case(capture, now, False)
PairCapture(ports, baud, artifact).run(args.seconds, tick, reset_on_start=True)
(artifact / "fault-suite.json").write_text(json.dumps(state["cases"], indent=2) + "\n", encoding="utf-8")
checks = generate(artifact, faults)
print(f"Fault-suite report: {artifact / 'report.md'}")
return 1 if any(check.status == "fail" for check in checks) else 0
if __name__ == "__main__":
main_guard(main)