tegwick
bfd1a2d46d
Assistant: codex Assistant-Model: gpt-6.1-sol Assistant-Session: 01a15374-f59f-7a31-86d2-d23b5d2ed181
690 lines
27 KiB
Python
690 lines
27 KiB
Python
#!/usr/bin/env python3
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"""Provisional loopback HTTP workload using Gunicorn and disposable PostgreSQL."""
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import argparse
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import concurrent.futures
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import hashlib
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import http.cookiejar
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import json
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import math
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import os
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import platform
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import signal
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import socket
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import subprocess
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import sys
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import tempfile
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import threading
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import time
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import urllib.error
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import urllib.parse
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import urllib.request
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import uuid
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from datetime import UTC, datetime
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from pathlib import Path
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def summarize(rows):
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durations = sorted(row["seconds"] for row in rows)
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return {
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"requests": len(rows),
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"errors": sum(not r["ok"] for r in rows),
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"p95_seconds": durations[math.ceil(len(durations) * 0.95) - 1] if durations else None,
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}
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def validate(config):
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for key in (
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"users",
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"iterations",
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"tenders",
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"document_bytes",
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"workers",
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"timeout_seconds",
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):
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if type(config[key]) is not int or config[key] < 1:
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raise ValueError(f"{key} must be a positive integer")
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for key in (
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"think_seconds",
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"ordinary_p95_seconds",
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"duration_seconds",
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"idle_seconds",
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):
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if not isinstance(config[key], (int, float)) or not math.isfinite(config[key]):
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raise ValueError(f"{key} must be finite")
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if config["think_seconds"] < 0 or config["ordinary_p95_seconds"] <= 0:
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raise ValueError("invalid timing parameter")
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if config["duration_seconds"] <= 0 or config["idle_seconds"] < 0:
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raise ValueError("duration must be positive and idle nonnegative")
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if config["document_bytes"] < 8:
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raise ValueError("document_bytes must be at least 8")
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if config.get("runtime", "host") not in ("host", "container"):
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raise ValueError("unsupported runtime")
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if config.get("runtime") == "container":
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if (
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not isinstance(config["app_cpu_limit"], (int, float))
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or not 0 < config["app_cpu_limit"] <= 8
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):
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raise ValueError("app_cpu_limit must be positive and at most 8")
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if not config.get("app_image") or not config.get("app_memory_limit"):
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raise ValueError("container image and memory limit required")
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return config
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def stop_process(server):
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"""Bounded teardown of a process group, including Gunicorn workers."""
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if server is None:
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return
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try:
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os.killpg(server.pid, signal.SIGTERM)
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except ProcessLookupError:
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pass
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try:
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server.wait(timeout=5)
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except subprocess.TimeoutExpired:
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try:
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os.killpg(server.pid, signal.SIGKILL)
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except ProcessLookupError:
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pass
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server.wait(timeout=5)
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def guarded_sampler(function, errors):
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try:
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function()
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except Exception as exc:
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errors.append({"sampler": function.__name__, "error_type": type(exc).__name__})
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def sampling_gaps(samples, db_samples, errors):
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gaps = list(errors)
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if any(s.get("sample_error") for s in samples):
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gaps.append({"sampler": "application", "reason": "sample failed"})
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good = [s for s in samples if "monotonic_seconds" in s]
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if len(good) < 2 or not db_samples:
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gaps.append({"sampler": "coverage", "reason": "insufficient samples"})
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if any(b["monotonic_seconds"] - a["monotonic_seconds"] > 3 for a, b in zip(good, good[1:])):
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gaps.append({"sampler": "application", "reason": "sampling interval exceeds 3 seconds"})
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return gaps
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def run(config, root):
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# Never consume a deployment database, media tree, session or credential.
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os.environ["DATABASE_URL"] = os.environ["SYNTHETIC_DATABASE_URL"]
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os.environ["SECRET_KEY"] = "synthetic-disposable-not-a-deployment-key"
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os.environ["DJANGO_SETTINGS_MODULE"] = "synthetic_settings"
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container_mode = config.get("runtime", "host") == "container"
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media = "/tmp/synthetic-media" if container_mode else str(root / "media")
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issue_db = "/tmp/synthetic-issues.db" if container_mode else str(root / "issues.db")
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(root / "synthetic_settings.py").write_text(
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"from vergabe_teilnahme.settings.base import *\n"
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'DEBUG = False\nALLOWED_HOSTS = ["127.0.0.1"]\nNETKINGDOM_ENABLED = False\n'
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f"MEDIA_ROOT = {media!r}\n"
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f"ISSUE_FACADE_LOCAL_DB = {issue_db!r}\n"
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'ISSUE_FACADE_GITEA = None\nFORCE_SCRIPT_NAME = None\nMEDIA_URL = "/media/"\n'
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'EMAIL_BACKEND = "django.core.mail.backends.locmem.EmailBackend"\n'
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"SESSION_COOKIE_SECURE = False\nCSRF_COOKIE_SECURE = False\n"
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)
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sys.path.insert(0, str(root))
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import django
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django.setup()
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from django.core.management import call_command
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from django.db import connections
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from vergabe_teilnahme.apps.accounts.models import Mitarbeiter
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from vergabe_teilnahme.apps.ausschreibungen.models import Ausschreibung
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from vergabe_teilnahme.apps.dokumente.models import Dokument
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call_command("migrate", verbosity=0)
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for i in range(config["tenders"]):
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Ausschreibung.objects.create(titel=f"Synthetic tender {i}", ausschreiber="Synthetic")
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users = []
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password = uuid.uuid4().hex
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for i in range(config["users"]):
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user = Mitarbeiter.objects.create_user(username=f"synthetic-{i}", password=password)
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users.append(user.username)
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with socket.socket() as sock:
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sock.bind(("127.0.0.1", 0))
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port = sock.getsockname()[1]
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base_url = f"http://127.0.0.1:{port}"
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env = dict(os.environ, PYTHONPATH=str(root) + os.pathsep + str(Path.cwd()))
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server_log = (root / "server.log").open("w")
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server = None
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app_container = None
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sampling_done = threading.Event()
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sampler_threads = []
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sampler_errors = []
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try:
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if container_mode:
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app_container = os.environ["SYNTHETIC_CONTAINER"] + "-app"
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root.chmod(0o755)
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subprocess.run(
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[
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"docker",
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"run",
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"--detach",
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"--pull=never",
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"--name",
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app_container,
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"--network",
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os.environ["SYNTHETIC_NETWORK"],
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"--publish",
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"127.0.0.1::8000",
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"--cpus",
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str(config["app_cpu_limit"]),
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"--memory",
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config["app_memory_limit"],
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"--pids-limit",
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"256",
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"--mount",
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(
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f"type=bind,src={root / 'synthetic_settings.py'},"
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"dst=/synthetic_settings.py,readonly"
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),
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"--env",
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"PYTHONPATH=/",
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"--env",
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"DJANGO_SETTINGS_MODULE=synthetic_settings",
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"--env",
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"SECRET_KEY=synthetic-disposable-not-a-deployment-key",
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"--env",
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"DATABASE_URL=postgres://synthetic:synthetic-local-only@db:5432/synthetic",
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config["app_image"],
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"gunicorn",
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"vergabe_teilnahme.wsgi:application",
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"--bind",
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"0.0.0.0:8000",
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"--workers",
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str(config["workers"]),
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"--timeout",
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"30",
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],
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check=True,
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timeout=30,
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stdout=subprocess.DEVNULL,
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)
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port = (
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subprocess.check_output(
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["docker", "port", app_container, "8000/tcp"], text=True, timeout=10
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)
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.strip()
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.split(":")[-1]
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)
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base_url = f"http://127.0.0.1:{port}"
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else:
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server = subprocess.Popen(
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[
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sys.executable,
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"-m",
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"gunicorn",
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"vergabe_teilnahme.wsgi:application",
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"--bind",
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f"127.0.0.1:{port}",
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"--workers",
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str(config["workers"]),
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"--timeout",
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"30",
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],
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start_new_session=True,
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env=env,
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stdout=server_log,
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stderr=server_log,
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)
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for _ in range(100):
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try:
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with urllib.request.urlopen(base_url + "/health/", timeout=1) as response:
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if response.status == 200:
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break
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except OSError:
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if server is not None and server.poll() is not None:
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raise RuntimeError("Gunicorn startup failed; see isolated server log")
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time.sleep(0.1)
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else:
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raise RuntimeError("Gunicorn readiness timeout")
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samples = []
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db_samples = []
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phase = {"name": "idle"}
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def sample():
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ticks_per_second = os.sysconf("SC_CLK_TCK")
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while not sampling_done.is_set():
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if container_mode:
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value = subprocess.check_output(
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[
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"docker",
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"exec",
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app_container,
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"sh",
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"-c",
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(
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"cat /sys/fs/cgroup/cpu.stat; echo MEMORY; "
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"cat /sys/fs/cgroup/memory.current"
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),
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],
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text=True,
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timeout=5,
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)
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cpu_text, memory_text = value.split("MEMORY\n")
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counters = {
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k: int(v) for k, v in (line.split() for line in cpu_text.splitlines())
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}
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samples.append(
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{
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"at": datetime.now(UTC).isoformat(),
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"monotonic_seconds": time.monotonic(),
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"phase": phase["name"],
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"cpu_seconds": counters["usage_usec"] / 1e6,
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"rss_bytes": int(memory_text.strip()),
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"memory_kind": "cgroup-memory-current",
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"cpu_stat": counters,
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"pids": [app_container],
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}
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)
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sampling_done.wait(0.5)
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continue
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pids = [server.pid]
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try:
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pids += [
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int(x)
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for x in Path(f"/proc/{server.pid}/task/{server.pid}/children")
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.read_text()
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.split()
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]
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cpu, rss = 0, 0
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for pid in pids:
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fields = Path(f"/proc/{pid}/stat").read_text().split(") ", 1)[1].split()
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cpu += (int(fields[11]) + int(fields[12])) / ticks_per_second
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rss += int(fields[21]) * os.sysconf("SC_PAGE_SIZE")
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samples.append(
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{
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"at": datetime.now(UTC).isoformat(),
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"monotonic_seconds": time.monotonic(),
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"phase": phase["name"],
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"cpu_seconds": cpu,
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"rss_bytes": rss,
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"pids": pids,
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}
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)
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except (OSError, ValueError):
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samples.append({"at": datetime.now(UTC).isoformat(), "sample_error": True})
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sampling_done.wait(0.5)
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def sample_db():
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while not sampling_done.is_set():
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value = subprocess.check_output(
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[
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"docker",
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"stats",
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"--no-stream",
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"--format",
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"{{json .}}",
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os.environ["SYNTHETIC_CONTAINER"],
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],
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text=True,
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timeout=5,
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)
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db_samples.append(
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{
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"at": datetime.now(UTC).isoformat(),
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"phase": phase["name"],
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"docker_stats": json.loads(value),
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}
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)
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sampling_done.wait(1)
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sampler = threading.Thread(
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target=guarded_sampler, args=(sample, sampler_errors), daemon=True
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)
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db_sampler = threading.Thread(
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target=guarded_sampler, args=(sample_db, sampler_errors), daemon=True
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)
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sampler_threads.extend([sampler, db_sampler])
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sampler.start()
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db_sampler.start()
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time.sleep(config["idle_seconds"])
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phase["name"] = "ordinary"
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deadline = time.monotonic() + config["duration_seconds"]
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completed = [0] * config["users"]
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barrier = threading.Barrier(config["users"])
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def worker(i):
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jar = http.cookiejar.CookieJar()
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class NoRedirect(urllib.request.HTTPRedirectHandler):
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def redirect_request(self, *args, **kwargs):
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return None
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opener = urllib.request.build_opener(
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urllib.request.HTTPCookieProcessor(jar), NoRedirect()
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)
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rows = []
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def request(operation, method, path, data=None, expected=200, transfer=False):
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started = time.perf_counter()
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try:
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headers = {}
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body = None
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if method == "post":
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token = next((c.value for c in jar if c.name == "csrftoken"), "")
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fields = dict(data or {}, csrfmiddlewaretoken=token)
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if transfer:
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boundary = "synthetic-" + uuid.uuid4().hex
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body = b""
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for name, value in fields.items():
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body += (
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f"--{boundary}\r\nContent-Disposition: form-data; "
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f'name="{name}"\r\n\r\n{value}\r\n'
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).encode()
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body += (
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(
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f"--{boundary}\r\nContent-Disposition: form-data; "
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'name="datei"; filename="synthetic.pdf"\r\n'
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"Content-Type: application/pdf\r\n\r\n"
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).encode()
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+ b"%PDF-1.4"
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+ b"x" * (config["document_bytes"] - 8)
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+ f"\r\n--{boundary}--\r\n".encode()
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)
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headers["Content-Type"] = f"multipart/form-data; boundary={boundary}"
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else:
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body = urllib.parse.urlencode(fields).encode()
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headers["Referer"] = base_url + path
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req = urllib.request.Request(
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base_url + path, data=body, headers=headers, method=method.upper()
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)
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try:
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response = opener.open(req, timeout=config["timeout_seconds"])
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except urllib.error.HTTPError as exc:
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response = exc
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received = len(response.read())
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status = response.status
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ok = status == expected
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response.close()
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except Exception:
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status, ok, received = None, False, 0
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rows.append(
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{
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"user": i,
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"operation": operation,
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"transfer": transfer,
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"seconds": time.perf_counter() - started,
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"status": status,
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"ok": ok,
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"response_bytes": received,
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}
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)
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return ok
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request("login-form", "get", "/accounts/login/")
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barrier.wait(timeout=30)
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request(
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"login",
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"post",
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"/accounts/login/",
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{"username": users[i], "password": password},
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302,
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)
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for n in range(config["iterations"]):
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if time.monotonic() >= deadline:
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break
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request("list", "get", "/ausschreibungen/")
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request("search", "get", "/ausschreibungen/?q=Synthetic")
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title = f"Workload-{i}-{n}"
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created = request(
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"tender-create",
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"post",
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"/ausschreibungen/neu/",
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{"titel": title, "ausschreiber": "Synthetic"},
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302,
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)
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tender = Ausschreibung.objects.filter(titel=title).first() if created else None
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if tender:
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base = f"/ausschreibungen/{tender.pk}/"
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request("detail", "get", base)
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request(
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"lot-create",
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"post",
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base + "lose/neu/",
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{"losnummer": "1", "lostitel": "Synthetic lot"},
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302,
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)
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request(
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"task-create",
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"post",
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base + "aufgaben/neu/",
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{"titel": "Synthetic task", "typ": "fachlich", "prioritaet": 2},
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302,
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)
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request(
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"document-upload",
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"post",
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base + "dokumente/hochladen/",
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{"kategorie": "intern", "version": "1.0"},
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302,
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True,
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)
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document = Dokument.objects.filter(ausschreibung=tender).first()
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if document:
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request("document-download", "get", document.datei.url, transfer=True)
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completed[i] += 1
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time.sleep(config["think_seconds"])
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connections.close_all()
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return rows
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started = datetime.now(UTC).isoformat()
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before = time.perf_counter()
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with concurrent.futures.ThreadPoolExecutor(max_workers=config["users"]) as pool:
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rows = [r for group in pool.map(worker, range(config["users"])) for r in group]
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ordinary = summarize([r for r in rows if not r["transfer"]])
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transfers = summarize([r for r in rows if r["transfer"]])
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complete = all(completed) and len(rows) == sum(completed) * 8 + config["users"] * 2
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result = {
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"schema_version": 1,
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"started_at": started,
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"finished_at": datetime.now(UTC).isoformat(),
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"duration_seconds": time.perf_counter() - before,
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"config": config,
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"environment": {
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"python": platform.python_version(),
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"django": django.get_version(),
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"platform": platform.platform(),
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"database": "disposable PostgreSQL 16 container",
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"transport": "loopback HTTP Gunicorn",
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"workers": config["workers"],
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},
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"ordinary": ordinary,
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"document_transfer": transfers,
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"complete": complete,
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"provisional_pass": complete
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and ordinary["errors"] == 0
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and transfers["errors"] == 0
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and ordinary["p95_seconds"] <= config["ordinary_p95_seconds"],
|
|
"limitations": [
|
|
"No browser, ingress, TLS or SSO",
|
|
"No CPU/memory allocation recommendation or human acceptance",
|
|
"No timed startup/restart or distinct burst; idle and ordinary phases only",
|
|
],
|
|
"operations": rows,
|
|
"runtime_samples": samples,
|
|
"database_samples": db_samples,
|
|
"completed_iterations": completed,
|
|
}
|
|
sampling_done.set()
|
|
for thread in sampler_threads:
|
|
thread.join(timeout=7)
|
|
gaps = sampling_gaps(samples, db_samples, sampler_errors)
|
|
if any(thread.is_alive() for thread in sampler_threads):
|
|
gaps.append({"sampler": "cleanup", "reason": "thread did not stop"})
|
|
result["measurement_gaps"] = gaps
|
|
result["measurement_complete"] = not gaps
|
|
if container_mode:
|
|
result["app_container"] = json.loads(
|
|
subprocess.check_output(
|
|
["docker", "inspect", "--format", "{{json .}}", app_container],
|
|
text=True,
|
|
timeout=10,
|
|
)
|
|
)
|
|
# Retain only public runtime identifiers/limits, never full container environment.
|
|
info = result.pop("app_container")
|
|
result["app_runtime"] = {
|
|
"image_id": info["Image"],
|
|
"nano_cpus": info["HostConfig"]["NanoCpus"],
|
|
"memory_bytes": info["HostConfig"]["Memory"],
|
|
"memory_kind": "cgroup-memory-current includes page cache",
|
|
"oom_killed": info["State"]["OOMKilled"],
|
|
"dockerfile_sha256": hashlib.sha256(Path("Dockerfile").read_bytes()).hexdigest(),
|
|
}
|
|
return result
|
|
finally:
|
|
sampling_done.set()
|
|
for thread in sampler_threads:
|
|
if thread.ident is not None:
|
|
thread.join(timeout=7)
|
|
stop_process(server)
|
|
if app_container is not None:
|
|
subprocess.run(
|
|
["docker", "rm", "--force", "--volumes", app_container],
|
|
timeout=15,
|
|
stdout=subprocess.DEVNULL,
|
|
stderr=subprocess.DEVNULL,
|
|
)
|
|
server_log.close()
|
|
connections.close_all()
|
|
|
|
|
|
if __name__ == "__main__":
|
|
parser = argparse.ArgumentParser(description=__doc__)
|
|
parser.add_argument("--config", type=Path, required=True)
|
|
parser.add_argument("--output", type=Path, required=True)
|
|
args = parser.parse_args()
|
|
config = validate(json.loads(args.config.read_text()))
|
|
sys.path.insert(0, str(Path(__file__).resolve().parents[1]))
|
|
name = "vergabe-synthetic-" + uuid.uuid4().hex[:12]
|
|
network = name + "-network"
|
|
network_args = []
|
|
try:
|
|
if config.get("runtime") == "container":
|
|
subprocess.run(
|
|
["docker", "network", "create", network],
|
|
check=True,
|
|
timeout=15,
|
|
stdout=subprocess.DEVNULL,
|
|
)
|
|
os.environ["SYNTHETIC_NETWORK"] = network
|
|
network_args = ["--network", network, "--network-alias", "db"]
|
|
# Cached image only, loopback random host port, no existing volume or database.
|
|
subprocess.run(
|
|
[
|
|
"docker",
|
|
"run",
|
|
"--detach",
|
|
"--pull=never",
|
|
"--name",
|
|
name,
|
|
"--publish",
|
|
"127.0.0.1::5432",
|
|
"--env",
|
|
"POSTGRES_DB=synthetic",
|
|
"--env",
|
|
"POSTGRES_USER=synthetic",
|
|
"--env",
|
|
"POSTGRES_PASSWORD=synthetic-local-only",
|
|
*network_args,
|
|
"postgres:16-alpine",
|
|
],
|
|
check=True,
|
|
stdout=subprocess.DEVNULL,
|
|
)
|
|
for _ in range(100):
|
|
ready = subprocess.run(
|
|
["docker", "exec", name, "pg_isready", "-U", "synthetic"],
|
|
stdout=subprocess.DEVNULL,
|
|
stderr=subprocess.DEVNULL,
|
|
)
|
|
if ready.returncode == 0:
|
|
break
|
|
time.sleep(0.1)
|
|
else:
|
|
raise RuntimeError("isolated PostgreSQL startup failed")
|
|
port = (
|
|
subprocess.check_output(["docker", "port", name, "5432/tcp"], text=True)
|
|
.strip()
|
|
.split(":")[-1]
|
|
)
|
|
os.environ["SYNTHETIC_CONTAINER"] = name
|
|
os.environ["SYNTHETIC_DATABASE_URL"] = (
|
|
f"postgres://synthetic:synthetic-local-only@127.0.0.1:{port}/synthetic"
|
|
)
|
|
with tempfile.TemporaryDirectory(prefix="vergabe-synthetic-") as directory:
|
|
result = run(config, Path(directory))
|
|
result["postgres_image_id"] = subprocess.check_output(
|
|
["docker", "inspect", "--format", "{{.Image}}", name], text=True
|
|
).strip()
|
|
result["postgres_final_stats"] = json.loads(
|
|
subprocess.check_output(
|
|
["docker", "stats", "--no-stream", "--format", "{{json .}}", name],
|
|
text=True,
|
|
)
|
|
)
|
|
finally:
|
|
subprocess.run(
|
|
["docker", "rm", "--force", "--volumes", name],
|
|
timeout=15,
|
|
stdout=subprocess.DEVNULL,
|
|
stderr=subprocess.DEVNULL,
|
|
)
|
|
if network_args:
|
|
subprocess.run(
|
|
["docker", "network", "rm", network],
|
|
check=True,
|
|
timeout=15,
|
|
stdout=subprocess.DEVNULL,
|
|
)
|
|
result["source_revision"] = subprocess.check_output(
|
|
["git", "rev-parse", "HEAD"], text=True
|
|
).strip()
|
|
result["driver_sha256"] = hashlib.sha256(Path(__file__).read_bytes()).hexdigest()
|
|
app_files = sorted(Path("vergabe_teilnahme").rglob("*.py")) + [
|
|
Path("uv.lock"),
|
|
Path("pyproject.toml"),
|
|
]
|
|
result["app_source_sha256"] = hashlib.sha256(
|
|
b"".join(str(p).encode() + b"\0" + p.read_bytes() for p in app_files)
|
|
).hexdigest()
|
|
result["host"] = {
|
|
"logical_cpus": os.cpu_count(),
|
|
"affinity_cpus": len(os.sched_getaffinity(0)),
|
|
"cpu_model": next(
|
|
(
|
|
x.split(":", 1)[1].strip()
|
|
for x in Path("/proc/cpuinfo").read_text().splitlines()
|
|
if x.startswith("model name")
|
|
),
|
|
"unknown",
|
|
),
|
|
"memory_total": next(
|
|
x for x in Path("/proc/meminfo").read_text().splitlines() if x.startswith("MemTotal:")
|
|
),
|
|
"cgroup_cpu_max": Path("/sys/fs/cgroup/cpu.max").read_text().strip()
|
|
if Path("/sys/fs/cgroup/cpu.max").exists()
|
|
else "unavailable",
|
|
"app_cpu_quota": config.get("app_cpu_limit", "not imposed by harness"),
|
|
}
|
|
result["config_sha256"] = hashlib.sha256(args.config.read_bytes()).hexdigest()
|
|
args.output.write_text(json.dumps(result, indent=2) + "\n")
|
|
print(
|
|
json.dumps(
|
|
{
|
|
k: result[k]
|
|
for k in (
|
|
"ordinary",
|
|
"document_transfer",
|
|
"complete",
|
|
"provisional_pass",
|
|
)
|
|
}
|
|
)
|
|
)
|
|
raise SystemExit(0 if result["provisional_pass"] and result["measurement_complete"] else 1)
|