mirror of
https://github.com/rcourtman/Pulse.git
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pulse-triage[bot]
fcc633337e
Cap server and agent excerpts at 256 KiB before display or request-ID search. Buffer only a bounded owner-only temporary file, preserve reader failures, and apply the hard deadline to the complete read-only pipeline. Exercise exact-size, overflow, stream, privacy, cleanup and closed-pipe deadline controls without accessing a real journal, daemon or service. Contract-Neutral: Documentation-only passive log recipe bounds and executable copied-recipe tests; no runtime, API, authentication, installer or monitoring contract change. Change-source: pulse-maintainer
481 lines
25 KiB
Python
481 lines
25 KiB
Python
#!/usr/bin/env python3
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"""Exercise copied incident-log recipes with synthetic service log readers.
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This checks shell behaviour, not an installed Pulse service or Docker daemon.
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"""
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from __future__ import annotations
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import json
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import os
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from pathlib import Path
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import re
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import shutil
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import signal
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import subprocess
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import sys
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import tempfile
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import time
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import unittest
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ROOT = Path(__file__).resolve().parents[2]
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DOC = ROOT / "docs/TROUBLESHOOTING.md"
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REQUEST_ID = "trace.123:abc"
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JSON_LOG = json.dumps({
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"level": "warn", "request_id": REQUEST_ID, "status": 503,
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"message": "Request failed",
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}, separators=(",", ":")) + "\n"
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CONSOLE_LOG = f"WRN Request failed request_id={REQUEST_ID} status=503\n"
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DECOY_LOG = "WRN Request failed request_id=traceX123:abc status=503\n"
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def section(heading: str = "### Correlate Logs with Requests") -> str:
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return DOC.read_text(encoding="utf-8").split(
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heading + "\n", 1
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)[1].split("\n### ", 1)[0]
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def recipes(heading: str = "### Correlate Logs with Requests") -> dict[str, str]:
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blocks = re.findall(r"```bash\n(.*?)```", section(heading), re.DOTALL)
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return {"docker" if "# Docker" in block else "journalctl": block
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for block in blocks}
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READER = f'''#!{sys.executable}
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import json, os, pathlib, signal, sys, time
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pathlib.Path(os.environ['READER_ARGV']).write_text(json.dumps(sys.argv[1:]))
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pathlib.Path(os.environ['READER_PID']).write_text(json.dumps({{
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'pid': os.getpid(),
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'start': pathlib.Path('/proc/self/stat').read_text().split(')', 1)[1].split()[19],
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}}))
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sys.stdout.write(pathlib.Path(os.environ['LOG_STDOUT_FILE']).read_text())
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sys.stderr.write(pathlib.Path(os.environ['LOG_STDERR_FILE']).read_text())
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sys.stdout.flush()
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sys.stderr.flush()
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if os.environ.get('READER_HANG'):
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if os.environ['READER_HANG'] in ('ignore-term', 'ignore-term-closed-pipes'):
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signal.signal(signal.SIGTERM, signal.SIG_IGN)
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if os.environ['READER_HANG'] == 'ignore-term-closed-pipes':
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os.close(1)
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os.close(2)
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time.sleep(30)
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sys.exit(int(os.environ.get('READER_EXIT', '0')))
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'''
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def exercise_log_recipe(reader: str, copied: str, *, stdout: str = "", stderr: str = "",
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exit_code: int = 0, hang: str = "", missing_timeout: bool = False,
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missing_tool: str = "", unavailable_temp: bool = False):
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"""Own and clean up only this synthetic shell's process group on failure."""
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with tempfile.TemporaryDirectory() as temporary:
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directory = Path(temporary)
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command = directory / reader
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command.write_text(READER, encoding="utf-8")
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command.chmod(0o700)
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argv = directory / "argv.json"
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pid_file = directory / "reader.pid"
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stdout_file, stderr_file = directory / "stdout.txt", directory / "stderr.txt"
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# Files keep the large-record controls out of exec's argument/environment
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# size limit. These are synthetic bytes, never a real journal or token.
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stdout_file.write_text(stdout, encoding="utf-8")
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stderr_file.write_text(stderr, encoding="utf-8")
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log_directory = directory / "log-temporary"
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log_directory.mkdir(mode=0o700)
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cleanup_file = directory / "cleanup.jsonl"
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real_rm = shutil.which("rm")
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(directory / "rm").write_text(f'''#!{sys.executable}
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import json, os, pathlib, stat, sys
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path = pathlib.Path(sys.argv[2])
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assert sys.argv[1] == '--' and len(sys.argv) == 3
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assert path.parent == pathlib.Path(os.environ['LOG_TEMPORARY'])
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assert path.name.startswith('pulse-log.')
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info = path.stat()
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with pathlib.Path(os.environ['LOG_CLEANUP']).open('a') as receipt:
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receipt.write(json.dumps({{'mode': stat.S_IMODE(info.st_mode), 'bytes': info.st_size}}) + '\\n')
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os.execv({real_rm!r}, [{real_rm!r}] + sys.argv[1:])
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''', encoding="utf-8")
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(directory / "rm").chmod(0o700)
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if missing_tool:
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for tool in ("bash", "timeout", "head", "mktemp", "wc", "cat", "grep"):
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if tool != missing_tool:
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(directory / tool).symlink_to(shutil.which(tool))
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if missing_tool == "rm":
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(directory / "rm").unlink()
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path = (str(directory) if missing_timeout or missing_tool
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else f"{directory}:{os.environ['PATH']}")
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env = dict(os.environ, PATH=path, READER_ARGV=str(argv), READER_PID=str(pid_file),
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LOG_STDOUT_FILE=str(stdout_file), LOG_STDERR_FILE=str(stderr_file),
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READER_EXIT=str(exit_code), READER_HANG=hang,
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LOG_TEMPORARY=str(log_directory), LOG_CLEANUP=str(cleanup_file),
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TMPDIR=str(log_directory / "absent" if unavailable_temp else log_directory))
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with subprocess.Popen([shutil.which("bash"), "-c", copied], env=env,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE,
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text=True, start_new_session=True) as process:
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try:
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output, errors = process.communicate(timeout=10)
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except subprocess.TimeoutExpired:
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try:
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os.killpg(process.pid, signal.SIGKILL)
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except ProcessLookupError:
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pass
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process.communicate(timeout=5)
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raise
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result = subprocess.CompletedProcess(process.args, process.returncode, output, errors)
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result.log_cleanup = ([json.loads(line) for line in cleanup_file.read_text().splitlines()]
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if cleanup_file.exists() else [])
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if list(log_directory.iterdir()):
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raise AssertionError("copied recipe left a private log file behind")
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# The reader is a child of timeout/the collection shell, not ours to
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# waitpid. A zombie is terminated, not still collecting. Observe only
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# the recorded fixture PID; never search for or stop a real service.
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result.reader_running = False
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if pid_file.exists():
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identity = json.loads(pid_file.read_text())
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try:
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pid_fd = os.pidfd_open(identity["pid"])
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except ProcessLookupError:
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pid_fd = None
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if pid_fd is not None:
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try:
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for _ in range(50):
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try:
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fields = Path(f"/proc/{identity['pid']}/stat").read_text().split(")", 1)[1].split()
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except FileNotFoundError:
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break
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if fields[19] != identity["start"] or fields[0] == "Z":
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break
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time.sleep(0.01)
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else:
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# The pidfd cannot signal a recycled PID. Clean up
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# only the captured synthetic child, then fail proof.
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signal.pidfd_send_signal(pid_fd, signal.SIGKILL)
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result.reader_running = True
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finally:
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os.close(pid_fd)
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return result, json.loads(argv.read_text()) if argv.exists() else None
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class TroubleshootingLogRecipesTest(unittest.TestCase):
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def exercise(self, reader: str, *, stdout: str = "", stderr: str = "",
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exit_code: int = 0, recipe: str | None = None, **settings):
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copied = (recipe if recipe is not None else recipes()[reader]).replace(
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"REQUEST_ID='abc123'", f"REQUEST_ID='{REQUEST_ID}'"
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)
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result, argv = exercise_log_recipe(reader, copied, stdout=stdout, stderr=stderr,
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exit_code=exit_code, **settings)
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expected = (["-u", "pulse", "--since", "15 minutes ago", "--lines", "1000", "--no-pager"]
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if reader == "journalctl" else ["logs", "--since", "15m", "--tail", "1000", "pulse"])
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self.assertEqual(argv, None if settings.get("missing_timeout") else expected)
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return result
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def test_shipped_document_is_the_same_guide(self):
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self.assertEqual(DOC.read_bytes(),
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(ROOT / "frontend-modern/public/docs/TROUBLESHOOTING.md").read_bytes())
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self.assertEqual(set(recipes()), {"journalctl", "docker"})
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def test_literal_id_matches_json_and_console_without_regex_false_matches(self):
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for reader in recipes():
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for log in (JSON_LOG, CONSOLE_LOG):
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with self.subTest(reader=reader, format=log):
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result = self.exercise(reader, stdout=DECOY_LOG + log)
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self.assertEqual(result.returncode, 0, result.stderr)
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self.assertEqual(result.stdout, log)
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self.assertEqual(result.stderr, "")
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def test_logs_written_to_stderr_are_searchable_for_both_readers(self):
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for reader in recipes():
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with self.subTest(reader=reader):
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result = self.exercise(reader, stdout=DECOY_LOG, stderr=JSON_LOG)
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self.assertEqual(result.returncode, 0, result.stderr)
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self.assertEqual(result.stdout, JSON_LOG)
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def test_no_match_is_nonzero_and_does_not_print_unrelated_logs(self):
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for reader in recipes():
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with self.subTest(reader=reader):
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result = self.exercise(reader, stdout=DECOY_LOG)
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self.assertEqual(result.returncode, 1)
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self.assertEqual(result.stdout, "")
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self.assertEqual(result.stderr, "")
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def test_log_reader_failure_remains_failure_even_with_a_matching_partial_log(self):
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error = "synthetic log-reader access failure\n"
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for reader in recipes():
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with self.subTest(reader=reader):
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result = self.exercise(reader, stdout=JSON_LOG, stderr=error, exit_code=2)
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self.assertEqual(result.returncode, 2)
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self.assertEqual(result.stdout, "")
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self.assertNotIn(error, result.stderr)
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self.assertIn("Log read unavailable (exit 2)", result.stderr)
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def test_hung_readers_withhold_partial_matches_and_stop_by_deadline(self):
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for reader in recipes():
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with self.subTest(reader=reader):
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result = self.exercise(reader, stdout=JSON_LOG, hang="term")
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self.assertEqual(result.returncode, 137, result.stderr)
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self.assertEqual(result.stdout, "")
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self.assertIn("Log read unavailable", result.stderr)
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def test_missing_timeout_stops_before_either_reader(self):
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for reader in recipes():
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with self.subTest(reader=reader):
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result = self.exercise(reader, missing_timeout=True)
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self.assertEqual(result.returncode, 1)
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self.assertEqual(result.stdout, "")
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self.assertIn("no unbounded fallback", result.stderr)
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def test_console_only_selector_is_a_negative_control_for_json(self):
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copied = recipes()["journalctl"].replace(
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'grep -aF -- "$REQUEST_ID"', 'grep -aF -- "request_id=$REQUEST_ID"'
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)
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result = self.exercise("journalctl", stdout=JSON_LOG, recipe=copied)
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self.assertEqual(result.returncode, 1)
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self.assertEqual(result.stdout, "")
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def test_guidance_keeps_browser_credentials_and_missing_logs_in_context(self):
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guide = " ".join(section().split())
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for boundary in ("Copy only the `X-Request-ID`", "Copy as cURL",
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"WebSocket upgrades", "not sanitised", "HTTP 5xx",
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"HTTP 4xx", "not successful requests", "debug level",
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"does not prove the request succeeded",
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"rather than repeating the failed action",
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"do not enable debug logging or retry a state-changing request"):
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self.assertIn(boundary, guide)
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self.assertNotRegex("\n".join(recipes().values()),
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r"curl\b|--follow\b|\s-f\b|--token\b|--api-token\b")
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class GeneralLogEvidenceTest(unittest.TestCase):
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"""The general help entry must reach the same bounded readers, without an ID."""
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def test_getting_help_reaches_bounded_readers_without_a_second_attempt(self):
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help_text = " ".join(section("## 🆘 Getting Help").split())
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self.assertIn("[bounded Pulse log readers](#inspect-notification-logs)", help_text)
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self.assertNotRegex(help_text, r"journalctl\b|docker logs\b")
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for boundary in ("Pulse server's deployment, not the monitored target",
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"record limit alone does not bound a hung reader",
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"do not use an unbounded substitute",
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"No request ID is required",
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"do not repeat the failed action"):
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self.assertIn(boundary, help_text)
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self.assertIn("also apply to other server errors",
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" ".join(section("### Inspect Notification Logs").split()))
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def exercise(self, reader: str, **settings):
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copied = recipes("### Inspect Notification Logs")[reader]
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self.assertNotIn("REQUEST_ID", copied)
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result, argv = exercise_log_recipe(reader, copied, **settings)
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expected = (["-u", "pulse", "--since", "15 minutes ago", "--lines", "200", "--no-pager"]
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if reader == "journalctl" else ["logs", "--since", "15m", "--tail", "200", "pulse"])
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self.assertEqual(argv, None if settings.get("missing_timeout") else expected)
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return result
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def test_general_readers_keep_complete_stdout_and_stderr_without_an_id(self):
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for reader in recipes("### Inspect Notification Logs"):
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with self.subTest(reader=reader):
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result = self.exercise(reader, stdout="server error\n", stderr="detail\n")
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self.assertEqual(result.returncode, 0, result.stderr)
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# The two streams can flush in either order; require both
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# records exactly once, not cross-stream chronology.
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self.assertCountEqual(result.stdout.splitlines(), ["server error", "detail"])
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self.assertEqual(result.stderr, "")
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def test_general_readers_withhold_partial_errors_on_failed_reads(self):
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for reader in recipes("### Inspect Notification Logs"):
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with self.subTest(reader=reader):
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result = self.exercise(reader, stdout="partial error\n",
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stderr="private access error\n", exit_code=2)
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self.assertEqual(result.returncode, 2)
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self.assertEqual(result.stdout, "")
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self.assertIn("Log read unavailable (exit 2)", result.stderr)
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self.assertNotIn("private access error", result.stderr)
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def test_general_readers_stop_and_withhold_partial_errors_at_real_deadline(self):
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for reader in recipes("### Inspect Notification Logs"):
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with self.subTest(reader=reader):
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result = self.exercise(reader, stdout="partial error\n", hang="term")
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self.assertEqual(result.returncode, 137, result.stderr)
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self.assertEqual(result.stdout, "")
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self.assertIn("Log read unavailable (exit 137)", result.stderr)
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def test_general_readers_do_not_fall_back_when_timeout_is_missing(self):
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for reader in recipes("### Inspect Notification Logs"):
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with self.subTest(reader=reader):
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result = self.exercise(reader, missing_timeout=True)
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self.assertEqual(result.returncode, 1)
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self.assertEqual(result.stdout, "")
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self.assertIn("no unbounded fallback", result.stderr)
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class SeverityLogEvidenceTest(unittest.TestCase):
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"""Priority filtering must not bypass the incident reader's safety bounds."""
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heading = "#### Filter Pulse's systemd journal by severity"
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def copied(self):
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# Stop at the next H4; the generic section helper stops at H3.
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text = section(self.heading).split("\n#### ", 1)[0]
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blocks = re.findall(r"```bash\n(.*?)```", text, re.DOTALL)
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self.assertEqual(len(blocks), 1)
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return blocks[0]
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def exercise(self, **settings):
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result, argv = exercise_log_recipe("journalctl", self.copied(), **settings)
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expected = ["-u", "pulse", "-p", "warning", "--since", "15 minutes ago",
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"--lines", "200", "--no-pager"]
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self.assertEqual(argv, None if settings.get("missing_timeout") else expected)
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return result
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def test_priority_reader_keeps_incident_bounds_without_privilege_or_mutation(self):
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copied = self.copied()
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for bound in ("--signal=KILL 8s", "--since '15 minutes ago'",
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"--lines 200", "--no-pager"):
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self.assertIn(bound, copied)
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self.assertNotRegex(copied, r"\b(?:sudo|systemctl|curl|grep)\b|--follow")
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self.assertEqual(DOC.read_bytes(),
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(ROOT / "frontend-modern/public/docs/TROUBLESHOOTING.md").read_bytes())
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def test_success_keeps_both_complete_streams(self):
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result = self.exercise(stdout=JSON_LOG, stderr=CONSOLE_LOG)
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self.assertEqual(result.returncode, 0, result.stderr)
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self.assertCountEqual(result.stdout.splitlines(),
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(JSON_LOG + CONSOLE_LOG).splitlines())
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self.assertEqual(result.stderr, "")
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def test_failed_reader_withholds_partial_warning_and_private_error(self):
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result = self.exercise(stdout=JSON_LOG, stderr="synthetic private error\n", exit_code=2)
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self.assertEqual(result.returncode, 2)
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self.assertEqual(result.stdout, "")
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self.assertIn("Log read unavailable (exit 2)", result.stderr)
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self.assertNotIn("synthetic private error", result.stderr)
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def test_real_deadline_withholds_partial_warning(self):
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result = self.exercise(stdout=JSON_LOG, hang="term")
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self.assertEqual(result.returncode, 137, result.stderr)
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self.assertEqual(result.stdout, "")
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self.assertIn("Log read unavailable (exit 137)", result.stderr)
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def test_missing_timeout_stops_before_reading(self):
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result = self.exercise(missing_timeout=True)
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self.assertEqual(result.returncode, 1)
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self.assertEqual(result.stdout, "")
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self.assertIn("no unbounded fallback", result.stderr)
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def test_empty_success_does_not_invent_a_warning_or_reader_error(self):
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result = self.exercise()
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self.assertEqual((result.returncode, result.stdout, result.stderr), (0, "", ""))
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def test_old_unit_and_sharing_guidance_does_not_require_incident_reinstallation(self):
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guide = " ".join(section(self.heading).split("\n#### ", 1)[0].split())
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for boundary in ("inside the Pulse container, not on the Proxmox host",
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"not sanitised", "#inspect-notification-logs",
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"An empty filtered read does not prove", "info priority",
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"bounded unfiltered systemd reader", "check locally",
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"do not post the full unit or environment",
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"Do not reinstall or restart Pulse just to obtain logs",
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"planned maintenance window", "settings and data"):
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self.assertIn(boundary, guide)
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self.assertNotIn("systemctl cat", guide)
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class LogByteBoundsTest(unittest.TestCase):
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"""Read the actual server and agent entry points, not a duplicate helper."""
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def copied_recipes(self):
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copied = []
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for heading in ("### Inspect Notification Logs", "### Correlate Logs with Requests"):
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copied.extend((heading, reader, recipe)
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for reader, recipe in recipes(heading).items())
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copied.append(("severity", "journalctl", SeverityLogEvidenceTest().copied()))
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agent_doc = (ROOT / "docs/UNIFIED_AGENT.md").read_text()
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agent_section = agent_doc.split("### Collect agent logs safely\n", 1)[1].split("\n### ", 1)[0]
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agent_blocks = re.findall(r"```bash\n(.*?)```", agent_section, re.DOTALL)
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self.assertEqual(len(agent_blocks), 1)
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copied.append(("agent", "journalctl", agent_blocks[0]))
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self.assertEqual(len(copied), 6)
|
|
return copied
|
|
|
|
def exercise(self, reader, recipe, **settings):
|
|
result, argv = exercise_log_recipe(reader, recipe, **settings)
|
|
self.assertFalse(result.reader_running, "reader survived the copied collection shell")
|
|
for cleanup in result.log_cleanup:
|
|
self.assertEqual(cleanup["mode"], 0o600)
|
|
self.assertLessEqual(cleanup["bytes"], 262145)
|
|
return result, argv
|
|
|
|
def test_exact_byte_limit_preserves_a_complete_record_and_private_file_cleanup(self):
|
|
log = "abc123 " + "x" * (262144 - 8) + "\n"
|
|
self.assertEqual(len(log.encode()), 262144)
|
|
for heading, reader, recipe in self.copied_recipes():
|
|
with self.subTest(section=heading, reader=reader):
|
|
result, _ = self.exercise(reader, recipe, stdout=log)
|
|
self.assertEqual(result.returncode, 0, result.stderr)
|
|
self.assertEqual(result.stdout, log)
|
|
self.assertEqual(result.stderr, "")
|
|
self.assertEqual(result.log_cleanup, [{"mode": 0o600, "bytes": 262144}])
|
|
|
|
def test_single_large_record_and_large_stderr_are_unavailable_not_a_partial_match(self):
|
|
for heading, reader, recipe in self.copied_recipes():
|
|
for stream in ("stdout", "stderr"):
|
|
with self.subTest(section=heading, reader=reader, stream=stream):
|
|
result, _ = self.exercise(reader, recipe, **{stream: "abc123 " + "x" * 1048576})
|
|
self.assertNotEqual(result.returncode, 0)
|
|
self.assertEqual(result.stdout, "")
|
|
self.assertIn("unavailable", result.stderr)
|
|
self.assertNotIn("abc123", result.stderr)
|
|
self.assertEqual(result.log_cleanup, [{"mode": 0o600, "bytes": 262145}])
|
|
|
|
def test_limit_counts_actual_bytes_including_unicode_nuls_and_trailing_newlines(self):
|
|
for heading, reader, recipe in self.copied_recipes():
|
|
for log in ("abc123" + "\n" * 262139, "é" * 131073, "\0" * 262145):
|
|
with self.subTest(section=heading, reader=reader, first_byte=repr(log[0])):
|
|
result, _ = self.exercise(reader, recipe, stdout=log)
|
|
self.assertNotEqual(result.returncode, 0)
|
|
self.assertEqual(result.stdout, "")
|
|
self.assertIn("unavailable", result.stderr)
|
|
self.assertEqual(result.log_cleanup, [{"mode": 0o600, "bytes": 262145}])
|
|
|
|
def test_failed_reader_still_has_no_excerpt_and_removes_its_private_buffer(self):
|
|
for heading, reader, recipe in self.copied_recipes():
|
|
with self.subTest(section=heading, reader=reader):
|
|
result, _ = self.exercise(reader, recipe, stdout="abc123 partial\n", exit_code=2)
|
|
self.assertEqual(result.returncode, 2)
|
|
self.assertEqual(result.stdout, "")
|
|
self.assertEqual(len(result.log_cleanup), 1)
|
|
|
|
def test_missing_limiter_or_private_temp_path_stops_before_the_reader(self):
|
|
for heading, reader, recipe in self.copied_recipes():
|
|
for settings in ({"missing_tool": "head"}, {"unavailable_temp": True}):
|
|
with self.subTest(section=heading, reader=reader, settings=settings):
|
|
result, argv = self.exercise(reader, recipe, **settings)
|
|
self.assertIsNone(argv)
|
|
self.assertEqual(result.returncode, 1)
|
|
self.assertEqual(result.stdout, "")
|
|
self.assertIn("unavailable", result.stderr)
|
|
self.assertEqual(result.log_cleanup, [])
|
|
|
|
def test_hard_deadline_terminates_closed_pipe_term_resistant_readers_and_cleans_buffer(self):
|
|
selected = [("docker", recipes("### Inspect Notification Logs")["docker"]),
|
|
("journalctl", self.copied_recipes()[-1][2])]
|
|
for reader, recipe in selected:
|
|
with self.subTest(reader=reader):
|
|
result, _ = self.exercise(reader, recipe, stdout="partial private log\n",
|
|
hang="ignore-term-closed-pipes")
|
|
self.assertEqual(result.returncode, 137, result.stderr)
|
|
self.assertEqual(result.stdout, "")
|
|
self.assertNotIn("partial private log", result.stderr)
|
|
self.assertEqual(len(result.log_cleanup), 1)
|
|
|
|
def test_each_entry_keeps_collection_deadline_pipe_failures_and_byte_limiter_together(self):
|
|
for heading, reader, recipe in self.copied_recipes():
|
|
with self.subTest(section=heading, reader=reader):
|
|
subprocess.run(["bash", "-n", "-c", recipe], check=True, capture_output=True)
|
|
for bound in ("umask 077", "timeout --signal=KILL 8s bash -o pipefail",
|
|
"2>&1 | head -c 262145", '" -gt 262144 ]', "trap 'rm --"):
|
|
self.assertIn(bound, recipe)
|
|
self.assertNotIn("--foreground", recipe)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|