WUT_Computer_Science/Programming/PSD/kafka/generate_and_send.py
Krzysztof kuhy Rudnicki bd24dd57ea Hold the coursework to the same lint bar as the tooling
kuhy overruled the "do not fix coursework to be better than it was submitted"
rule: git history is the archive, so the working tree can be clean. This lands
the config and the mechanical half of the cleanup -- 9,281 ruff findings under
the fleet config down to 3,686, with no per-file-ignores anywhere.

What is in here:

- pyproject.toml, the first one in this repo. select = ["ALL"], mypy strict,
  and the vendored list mirrored into ruff exclude and coverage omit. Five
  rules are off and each says why; CPY001 is the only judgement call, because
  stamping a copyright header onto 137 university assignments would assert a
  licence that was never claimed. No hook is wired up yet -- a gate lands only
  once its subject is clean.

- ruff format + the safe fixes, then a second pass over the docstring rules
  ruff marks unsafe (they only edit docstring text). 108 files.

- TRAK/sightpy is vendored, not coursework: it is rafael-fuente/Python-Raytracer
  (BSD 3-Clause). Verified against a fresh upstream clone with line endings
  normalised -- 30 of 32 files byte-identical, ray.py and scene.py carrying a
  12- and 13-line local patch that counts rays for the report. 35 files that
  should never have been linted, now excluded and restored.

- WDWR, SPD, MOM and ECRYPT are fully clean, by hand and verified by running
  them: WDWR's three plot scripts print the same statistics as before, MOM's
  PuLP model solves to the same cost. WDWR's graph.py had a 342-character CSV
  header embedded as a string literal, which cannot be wrapped -- the data
  moved to data/pareto_front.csv. Two 0-byte .py stubs are deleted; an empty
  file is not a deliverable and git still has it.

Three harness bugs found by actually running things:

- `run` now forces MPLBACKEND=Agg. TRAK finished its ray trace in 37 seconds
  and then sat for 45 minutes: plt.show() had opened an image viewer and was
  waiting for someone to close the window.
- TRAK's main.py only pops that viewer with --show now, and its runner writes
  to a gitignored build/ via the new --entry-args. The default output path is
  outputs/output.png, which is TRACKED -- a plain run overwrote a submitted
  deliverable.
- course_lib.sh was 357 lines, over this repo's own cap. Split into
  course_probe.sh and course_run.sh.

Verified: ECOTE 26 tests pass, ECRYPT_PROJECT 99 pass, TRAK renders
cornell_box in 37s and exits 0, every module compiles, and every import ruff
removed was checked to be genuinely unused.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0172dj34FDpao6wsix8ZuCzE
2026-08-28 19:53:04 +02:00

42 lines
1.1 KiB
Python

import json
import random
import time
from confluent_kafka import Producer
# Configuration for Kafka Producer
conf = {"bootstrap.servers": "localhost:9092"}
producer = Producer(**conf)
def generate_transaction():
return {
"card_id": random.randint(1000, 9999),
"user_id": random.randint(100, 999),
"location": {
"latitude": round(random.uniform(-90, 90), 6),
"longitude": round(random.uniform(-180, 180), 6),
},
"transaction_value": round(random.uniform(1, 1000), 2),
"spending_limit": round(random.uniform(1000, 5000), 2),
}
def delivery_report(err, msg):
if err is not None:
print(f"Message delivery failed: {err}")
else:
print(f"Message delivered to {msg.topic()} [{msg.partition()}]")
while True:
transaction = generate_transaction()
producer.produce(
"transactions",
key=str(transaction["card_id"]),
value=json.dumps(transaction),
callback=delivery_report,
)
producer.poll(1)
time.sleep(1) # Adjust the sleep time to control the frequency of transactions