mirror of
https://github.com/NixOS/nixpkgs.git
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24fb872079
The aarch64-linux versions of the boot.uefiUsb and boot.uefiCdrom tests
were broken by b0fc9da879.
That commit was a refactor which omitted the qemuBinary option, which was
previously available in the legacy start command. This restores that
option and fixes the tests previously mentioned.
988 lines
33 KiB
Python
988 lines
33 KiB
Python
from contextlib import _GeneratorContextManager
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from pathlib import Path
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from queue import Queue
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from typing import Any, Callable, Dict, Iterable, List, Optional, Tuple
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import base64
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import io
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import os
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import queue
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import re
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import shlex
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import shutil
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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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from test_driver.logger import rootlog
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CHAR_TO_KEY = {
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"A": "shift-a",
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"N": "shift-n",
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"-": "0x0C",
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"_": "shift-0x0C",
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"B": "shift-b",
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"O": "shift-o",
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"=": "0x0D",
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"+": "shift-0x0D",
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"C": "shift-c",
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"P": "shift-p",
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"[": "0x1A",
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"{": "shift-0x1A",
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"D": "shift-d",
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"Q": "shift-q",
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"]": "0x1B",
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"}": "shift-0x1B",
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"E": "shift-e",
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"R": "shift-r",
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";": "0x27",
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":": "shift-0x27",
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"F": "shift-f",
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"S": "shift-s",
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"'": "0x28",
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'"': "shift-0x28",
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"G": "shift-g",
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"T": "shift-t",
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"`": "0x29",
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"~": "shift-0x29",
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"H": "shift-h",
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"U": "shift-u",
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"\\": "0x2B",
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"|": "shift-0x2B",
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"I": "shift-i",
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"V": "shift-v",
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",": "0x33",
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"<": "shift-0x33",
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"J": "shift-j",
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"W": "shift-w",
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".": "0x34",
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">": "shift-0x34",
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"K": "shift-k",
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"X": "shift-x",
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"/": "0x35",
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"?": "shift-0x35",
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"L": "shift-l",
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"Y": "shift-y",
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" ": "spc",
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"M": "shift-m",
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"Z": "shift-z",
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"\n": "ret",
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"!": "shift-0x02",
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"@": "shift-0x03",
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"#": "shift-0x04",
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"$": "shift-0x05",
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"%": "shift-0x06",
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"^": "shift-0x07",
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"&": "shift-0x08",
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"*": "shift-0x09",
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"(": "shift-0x0A",
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")": "shift-0x0B",
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}
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def make_command(args: list) -> str:
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return " ".join(map(shlex.quote, (map(str, args))))
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def _perform_ocr_on_screenshot(
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screenshot_path: str, model_ids: Iterable[int]
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) -> List[str]:
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if shutil.which("tesseract") is None:
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raise Exception("OCR requested but enableOCR is false")
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magick_args = (
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"-filter Catrom -density 72 -resample 300 "
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+ "-contrast -normalize -despeckle -type grayscale "
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+ "-sharpen 1 -posterize 3 -negate -gamma 100 "
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+ "-blur 1x65535"
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)
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tess_args = f"-c debug_file=/dev/null --psm 11"
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cmd = f"convert {magick_args} {screenshot_path} tiff:{screenshot_path}.tiff"
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ret = subprocess.run(cmd, shell=True, capture_output=True)
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if ret.returncode != 0:
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raise Exception(f"TIFF conversion failed with exit code {ret.returncode}")
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model_results = []
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for model_id in model_ids:
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cmd = f"tesseract {screenshot_path}.tiff - {tess_args} --oem {model_id}"
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ret = subprocess.run(cmd, shell=True, capture_output=True)
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if ret.returncode != 0:
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raise Exception(f"OCR failed with exit code {ret.returncode}")
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model_results.append(ret.stdout.decode("utf-8"))
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return model_results
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def retry(fn: Callable, timeout: int = 900) -> None:
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"""Call the given function repeatedly, with 1 second intervals,
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until it returns True or a timeout is reached.
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"""
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for _ in range(timeout):
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if fn(False):
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return
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time.sleep(1)
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if not fn(True):
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raise Exception(f"action timed out after {timeout} seconds")
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class StartCommand:
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"""The Base Start Command knows how to append the necesary
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runtime qemu options as determined by a particular test driver
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run. Any such start command is expected to happily receive and
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append additional qemu args.
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"""
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_cmd: str
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def cmd(
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self,
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monitor_socket_path: Path,
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shell_socket_path: Path,
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allow_reboot: bool = False, # TODO: unused, legacy?
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) -> str:
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display_opts = ""
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display_available = any(x in os.environ for x in ["DISPLAY", "WAYLAND_DISPLAY"])
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if not display_available:
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display_opts += " -nographic"
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# qemu options
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qemu_opts = ""
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qemu_opts += (
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""
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if allow_reboot
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else " -no-reboot"
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" -device virtio-serial"
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" -device virtconsole,chardev=shell"
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" -device virtio-rng-pci"
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" -serial stdio"
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)
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# TODO: qemu script already catpures this env variable, legacy?
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qemu_opts += " " + os.environ.get("QEMU_OPTS", "")
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return (
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f"{self._cmd}"
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f" -monitor unix:{monitor_socket_path}"
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f" -chardev socket,id=shell,path={shell_socket_path}"
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f"{qemu_opts}"
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f"{display_opts}"
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)
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@staticmethod
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def build_environment(
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state_dir: Path,
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shared_dir: Path,
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) -> dict:
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# We make a copy to not update the current environment
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env = dict(os.environ)
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env.update(
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{
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"TMPDIR": str(state_dir),
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"SHARED_DIR": str(shared_dir),
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"USE_TMPDIR": "1",
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}
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)
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return env
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def run(
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self,
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state_dir: Path,
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shared_dir: Path,
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monitor_socket_path: Path,
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shell_socket_path: Path,
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) -> subprocess.Popen:
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return subprocess.Popen(
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self.cmd(monitor_socket_path, shell_socket_path),
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stdin=subprocess.DEVNULL,
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT,
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shell=True,
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cwd=state_dir,
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env=self.build_environment(state_dir, shared_dir),
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)
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class NixStartScript(StartCommand):
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"""A start script from nixos/modules/virtualiation/qemu-vm.nix
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that also satisfies the requirement of the BaseStartCommand.
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These Nix commands have the particular charactersitic that the
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machine name can be extracted out of them via a regex match.
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(Admittedly a _very_ implicit contract, evtl. TODO fix)
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"""
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def __init__(self, script: str):
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self._cmd = script
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@property
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def machine_name(self) -> str:
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match = re.search("run-(.+)-vm$", self._cmd)
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name = "machine"
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if match:
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name = match.group(1)
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return name
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class LegacyStartCommand(StartCommand):
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"""Used in some places to create an ad-hoc machine instead of
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using nix test instrumentation + module system for that purpose.
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Legacy.
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"""
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def __init__(
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self,
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netBackendArgs: Optional[str] = None,
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netFrontendArgs: Optional[str] = None,
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hda: Optional[Tuple[Path, str]] = None,
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cdrom: Optional[str] = None,
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usb: Optional[str] = None,
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bios: Optional[str] = None,
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qemuBinary: Optional[str] = None,
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qemuFlags: Optional[str] = None,
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):
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if qemuBinary is not None:
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self._cmd = qemuBinary
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else:
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self._cmd = "qemu-kvm"
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self._cmd += " -m 384"
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# networking
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net_backend = "-netdev user,id=net0"
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net_frontend = "-device virtio-net-pci,netdev=net0"
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if netBackendArgs is not None:
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net_backend += "," + netBackendArgs
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if netFrontendArgs is not None:
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net_frontend += "," + netFrontendArgs
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self._cmd += f" {net_backend} {net_frontend}"
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# hda
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hda_cmd = ""
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if hda is not None:
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hda_path = hda[0].resolve()
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hda_interface = hda[1]
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if hda_interface == "scsi":
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hda_cmd += (
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f" -drive id=hda,file={hda_path},werror=report,if=none"
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" -device scsi-hd,drive=hda"
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)
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else:
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hda_cmd += f" -drive file={hda_path},if={hda_interface},werror=report"
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self._cmd += hda_cmd
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# cdrom
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if cdrom is not None:
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self._cmd += f" -cdrom {cdrom}"
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# usb
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usb_cmd = ""
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if usb is not None:
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# https://github.com/qemu/qemu/blob/master/docs/usb2.txt
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usb_cmd += (
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" -device usb-ehci"
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f" -drive id=usbdisk,file={usb},if=none,readonly"
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" -device usb-storage,drive=usbdisk "
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)
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self._cmd += usb_cmd
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# bios
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if bios is not None:
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self._cmd += f" -bios {bios}"
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# qemu flags
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if qemuFlags is not None:
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self._cmd += f" {qemuFlags}"
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class Machine:
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"""A handle to the machine with this name, that also knows how to manage
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the machine lifecycle with the help of a start script / command."""
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name: str
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out_dir: Path
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tmp_dir: Path
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shared_dir: Path
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state_dir: Path
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monitor_path: Path
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shell_path: Path
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start_command: StartCommand
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keep_vm_state: bool
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allow_reboot: bool
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process: Optional[subprocess.Popen]
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pid: Optional[int]
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monitor: Optional[socket.socket]
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shell: Optional[socket.socket]
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serial_thread: Optional[threading.Thread]
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booted: bool
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connected: bool
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# Store last serial console lines for use
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# of wait_for_console_text
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last_lines: Queue = Queue()
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callbacks: List[Callable]
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def __repr__(self) -> str:
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return f"<Machine '{self.name}'>"
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def __init__(
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self,
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out_dir: Path,
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tmp_dir: Path,
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start_command: StartCommand,
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name: str = "machine",
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keep_vm_state: bool = False,
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allow_reboot: bool = False,
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callbacks: Optional[List[Callable]] = None,
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) -> None:
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self.out_dir = out_dir
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self.tmp_dir = tmp_dir
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self.keep_vm_state = keep_vm_state
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self.allow_reboot = allow_reboot
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self.name = name
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self.start_command = start_command
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self.callbacks = callbacks if callbacks is not None else []
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# set up directories
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self.shared_dir = self.tmp_dir / "shared-xchg"
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self.shared_dir.mkdir(mode=0o700, exist_ok=True)
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self.state_dir = self.tmp_dir / f"vm-state-{self.name}"
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self.monitor_path = self.state_dir / "monitor"
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self.shell_path = self.state_dir / "shell"
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if (not self.keep_vm_state) and self.state_dir.exists():
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self.cleanup_statedir()
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self.state_dir.mkdir(mode=0o700, exist_ok=True)
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self.process = None
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self.pid = None
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self.monitor = None
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self.shell = None
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self.serial_thread = None
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self.booted = False
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self.connected = False
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@staticmethod
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def create_startcommand(args: Dict[str, str]) -> StartCommand:
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rootlog.warning(
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"Using legacy create_startcommand(),"
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"please use proper nix test vm instrumentation, instead"
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"to generate the appropriate nixos test vm qemu startup script"
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)
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hda = None
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if args.get("hda"):
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hda_arg: str = args.get("hda", "")
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hda_arg_path: Path = Path(hda_arg)
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hda = (hda_arg_path, args.get("hdaInterface", ""))
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return LegacyStartCommand(
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netBackendArgs=args.get("netBackendArgs"),
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netFrontendArgs=args.get("netFrontendArgs"),
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hda=hda,
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cdrom=args.get("cdrom"),
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usb=args.get("usb"),
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bios=args.get("bios"),
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qemuBinary=args.get("qemuBinary"),
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qemuFlags=args.get("qemuFlags"),
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)
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def is_up(self) -> bool:
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return self.booted and self.connected
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def log(self, msg: str) -> None:
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rootlog.log(msg, {"machine": self.name})
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def log_serial(self, msg: str) -> None:
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rootlog.log_serial(msg, self.name)
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def nested(self, msg: str, attrs: Dict[str, str] = {}) -> _GeneratorContextManager:
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my_attrs = {"machine": self.name}
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my_attrs.update(attrs)
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return rootlog.nested(msg, my_attrs)
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def wait_for_monitor_prompt(self) -> str:
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with self.nested("waiting for monitor prompt"):
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assert self.monitor is not None
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answer = ""
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while True:
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undecoded_answer = self.monitor.recv(1024)
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if not undecoded_answer:
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break
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answer += undecoded_answer.decode()
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if answer.endswith("(qemu) "):
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break
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return answer
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def send_monitor_command(self, command: str) -> str:
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self.run_callbacks()
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with self.nested("sending monitor command: {}".format(command)):
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message = ("{}\n".format(command)).encode()
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assert self.monitor is not None
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self.monitor.send(message)
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return self.wait_for_monitor_prompt()
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def wait_for_unit(self, unit: str, user: Optional[str] = None) -> None:
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"""Wait for a systemd unit to get into "active" state.
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Throws exceptions on "failed" and "inactive" states as well as
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after timing out.
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"""
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def check_active(_: Any) -> bool:
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info = self.get_unit_info(unit, user)
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state = info["ActiveState"]
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if state == "failed":
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raise Exception('unit "{}" reached state "{}"'.format(unit, state))
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if state == "inactive":
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status, jobs = self.systemctl("list-jobs --full 2>&1", user)
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if "No jobs" in jobs:
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info = self.get_unit_info(unit, user)
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if info["ActiveState"] == state:
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raise Exception(
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(
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'unit "{}" is inactive and there ' "are no pending jobs"
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).format(unit)
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)
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return state == "active"
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with self.nested(
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"waiting for unit {}{}".format(
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unit, f" with user {user}" if user is not None else ""
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)
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):
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retry(check_active)
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def get_unit_info(self, unit: str, user: Optional[str] = None) -> Dict[str, str]:
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status, lines = self.systemctl('--no-pager show "{}"'.format(unit), user)
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if status != 0:
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raise Exception(
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'retrieving systemctl info for unit "{}" {} failed with exit code {}'.format(
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unit, "" if user is None else 'under user "{}"'.format(user), status
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)
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)
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line_pattern = re.compile(r"^([^=]+)=(.*)$")
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def tuple_from_line(line: str) -> Tuple[str, str]:
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match = line_pattern.match(line)
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assert match is not None
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return match[1], match[2]
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return dict(
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tuple_from_line(line)
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for line in lines.split("\n")
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if line_pattern.match(line)
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)
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def systemctl(self, q: str, user: Optional[str] = None) -> Tuple[int, str]:
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if user is not None:
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q = q.replace("'", "\\'")
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return self.execute(
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(
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"su -l {} --shell /bin/sh -c "
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"$'XDG_RUNTIME_DIR=/run/user/`id -u` "
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"systemctl --user {}'"
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).format(user, q)
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)
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return self.execute("systemctl {}".format(q))
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def require_unit_state(self, unit: str, require_state: str = "active") -> None:
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with self.nested(
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"checking if unit ‘{}’ has reached state '{}'".format(unit, require_state)
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):
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info = self.get_unit_info(unit)
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state = info["ActiveState"]
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if state != require_state:
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raise Exception(
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"Expected unit ‘{}’ to to be in state ".format(unit)
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+ "'{}' but it is in state ‘{}’".format(require_state, state)
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)
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def _next_newline_closed_block_from_shell(self) -> str:
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assert self.shell
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output_buffer = []
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while True:
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# This receives up to 4096 bytes from the socket
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chunk = self.shell.recv(4096)
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if not chunk:
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# Probably a broken pipe, return the output we have
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break
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decoded = chunk.decode()
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output_buffer += [decoded]
|
||
if decoded[-1] == "\n":
|
||
break
|
||
return "".join(output_buffer)
|
||
|
||
def execute(
|
||
self, command: str, check_return: bool = True, timeout: Optional[int] = 900
|
||
) -> Tuple[int, str]:
|
||
self.run_callbacks()
|
||
self.connect()
|
||
|
||
if timeout is not None:
|
||
command = "timeout {} sh -c {}".format(timeout, shlex.quote(command))
|
||
|
||
out_command = f"( set -euo pipefail; {command} ) | (base64 --wrap 0; echo)\n"
|
||
assert self.shell
|
||
self.shell.send(out_command.encode())
|
||
|
||
# Get the output
|
||
output = base64.b64decode(self._next_newline_closed_block_from_shell())
|
||
|
||
if not check_return:
|
||
return (-1, output.decode())
|
||
|
||
# Get the return code
|
||
self.shell.send("echo ${PIPESTATUS[0]}\n".encode())
|
||
rc = int(self._next_newline_closed_block_from_shell().strip())
|
||
|
||
return (rc, output.decode())
|
||
|
||
def shell_interact(self) -> None:
|
||
"""Allows you to interact with the guest shell
|
||
|
||
Should only be used during test development, not in the production test."""
|
||
self.connect()
|
||
self.log("Terminal is ready (there is no initial prompt):")
|
||
|
||
assert self.shell
|
||
subprocess.run(
|
||
["socat", "READLINE,prompt=$ ", f"FD:{self.shell.fileno()}"],
|
||
pass_fds=[self.shell.fileno()],
|
||
)
|
||
|
||
def succeed(self, *commands: str, timeout: Optional[int] = None) -> str:
|
||
"""Execute each command and check that it succeeds."""
|
||
output = ""
|
||
for command in commands:
|
||
with self.nested("must succeed: {}".format(command)):
|
||
(status, out) = self.execute(command, timeout=timeout)
|
||
if status != 0:
|
||
self.log("output: {}".format(out))
|
||
raise Exception(
|
||
"command `{}` failed (exit code {})".format(command, status)
|
||
)
|
||
output += out
|
||
return output
|
||
|
||
def fail(self, *commands: str, timeout: Optional[int] = None) -> str:
|
||
"""Execute each command and check that it fails."""
|
||
output = ""
|
||
for command in commands:
|
||
with self.nested("must fail: {}".format(command)):
|
||
(status, out) = self.execute(command, timeout=timeout)
|
||
if status == 0:
|
||
raise Exception(
|
||
"command `{}` unexpectedly succeeded".format(command)
|
||
)
|
||
output += out
|
||
return output
|
||
|
||
def wait_until_succeeds(self, command: str, timeout: int = 900) -> str:
|
||
"""Wait until a command returns success and return its output.
|
||
Throws an exception on timeout.
|
||
"""
|
||
output = ""
|
||
|
||
def check_success(_: Any) -> bool:
|
||
nonlocal output
|
||
status, output = self.execute(command, timeout=timeout)
|
||
return status == 0
|
||
|
||
with self.nested("waiting for success: {}".format(command)):
|
||
retry(check_success, timeout)
|
||
return output
|
||
|
||
def wait_until_fails(self, command: str, timeout: int = 900) -> str:
|
||
"""Wait until a command returns failure.
|
||
Throws an exception on timeout.
|
||
"""
|
||
output = ""
|
||
|
||
def check_failure(_: Any) -> bool:
|
||
nonlocal output
|
||
status, output = self.execute(command, timeout=timeout)
|
||
return status != 0
|
||
|
||
with self.nested("waiting for failure: {}".format(command)):
|
||
retry(check_failure)
|
||
return output
|
||
|
||
def wait_for_shutdown(self) -> None:
|
||
if not self.booted:
|
||
return
|
||
|
||
with self.nested("waiting for the VM to power off"):
|
||
sys.stdout.flush()
|
||
assert self.process
|
||
self.process.wait()
|
||
|
||
self.pid = None
|
||
self.booted = False
|
||
self.connected = False
|
||
|
||
def get_tty_text(self, tty: str) -> str:
|
||
status, output = self.execute(
|
||
"fold -w$(stty -F /dev/tty{0} size | "
|
||
"awk '{{print $2}}') /dev/vcs{0}".format(tty)
|
||
)
|
||
return output
|
||
|
||
def wait_until_tty_matches(self, tty: str, regexp: str) -> None:
|
||
"""Wait until the visible output on the chosen TTY matches regular
|
||
expression. Throws an exception on timeout.
|
||
"""
|
||
matcher = re.compile(regexp)
|
||
|
||
def tty_matches(last: bool) -> bool:
|
||
text = self.get_tty_text(tty)
|
||
if last:
|
||
self.log(
|
||
f"Last chance to match /{regexp}/ on TTY{tty}, "
|
||
f"which currently contains: {text}"
|
||
)
|
||
return len(matcher.findall(text)) > 0
|
||
|
||
with self.nested("waiting for {} to appear on tty {}".format(regexp, tty)):
|
||
retry(tty_matches)
|
||
|
||
def send_chars(self, chars: List[str]) -> None:
|
||
with self.nested("sending keys ‘{}‘".format(chars)):
|
||
for char in chars:
|
||
self.send_key(char)
|
||
|
||
def wait_for_file(self, filename: str) -> None:
|
||
"""Waits until the file exists in machine's file system."""
|
||
|
||
def check_file(_: Any) -> bool:
|
||
status, _ = self.execute("test -e {}".format(filename))
|
||
return status == 0
|
||
|
||
with self.nested("waiting for file ‘{}‘".format(filename)):
|
||
retry(check_file)
|
||
|
||
def wait_for_open_port(self, port: int) -> None:
|
||
def port_is_open(_: Any) -> bool:
|
||
status, _ = self.execute("nc -z localhost {}".format(port))
|
||
return status == 0
|
||
|
||
with self.nested("waiting for TCP port {}".format(port)):
|
||
retry(port_is_open)
|
||
|
||
def wait_for_closed_port(self, port: int) -> None:
|
||
def port_is_closed(_: Any) -> bool:
|
||
status, _ = self.execute("nc -z localhost {}".format(port))
|
||
return status != 0
|
||
|
||
with self.nested("waiting for TCP port {} to be closed"):
|
||
retry(port_is_closed)
|
||
|
||
def start_job(self, jobname: str, user: Optional[str] = None) -> Tuple[int, str]:
|
||
return self.systemctl("start {}".format(jobname), user)
|
||
|
||
def stop_job(self, jobname: str, user: Optional[str] = None) -> Tuple[int, str]:
|
||
return self.systemctl("stop {}".format(jobname), user)
|
||
|
||
def wait_for_job(self, jobname: str) -> None:
|
||
self.wait_for_unit(jobname)
|
||
|
||
def connect(self) -> None:
|
||
if self.connected:
|
||
return
|
||
|
||
with self.nested("waiting for the VM to finish booting"):
|
||
self.start()
|
||
|
||
assert self.shell
|
||
|
||
tic = time.time()
|
||
self.shell.recv(1024)
|
||
# TODO: Timeout
|
||
toc = time.time()
|
||
|
||
self.log("connected to guest root shell")
|
||
self.log("(connecting took {:.2f} seconds)".format(toc - tic))
|
||
self.connected = True
|
||
|
||
def screenshot(self, filename: str) -> None:
|
||
word_pattern = re.compile(r"^\w+$")
|
||
if word_pattern.match(filename):
|
||
filename = os.path.join(self.out_dir, "{}.png".format(filename))
|
||
tmp = "{}.ppm".format(filename)
|
||
|
||
with self.nested(
|
||
"making screenshot {}".format(filename),
|
||
{"image": os.path.basename(filename)},
|
||
):
|
||
self.send_monitor_command("screendump {}".format(tmp))
|
||
ret = subprocess.run("pnmtopng {} > {}".format(tmp, filename), shell=True)
|
||
os.unlink(tmp)
|
||
if ret.returncode != 0:
|
||
raise Exception("Cannot convert screenshot")
|
||
|
||
def copy_from_host_via_shell(self, source: str, target: str) -> None:
|
||
"""Copy a file from the host into the guest by piping it over the
|
||
shell into the destination file. Works without host-guest shared folder.
|
||
Prefer copy_from_host for whenever possible.
|
||
"""
|
||
with open(source, "rb") as fh:
|
||
content_b64 = base64.b64encode(fh.read()).decode()
|
||
self.succeed(
|
||
f"mkdir -p $(dirname {target})",
|
||
f"echo -n {content_b64} | base64 -d > {target}",
|
||
)
|
||
|
||
def copy_from_host(self, source: str, target: str) -> None:
|
||
"""Copy a file from the host into the guest via the `shared_dir` shared
|
||
among all the VMs (using a temporary directory).
|
||
"""
|
||
host_src = Path(source)
|
||
vm_target = Path(target)
|
||
with tempfile.TemporaryDirectory(dir=self.shared_dir) as shared_td:
|
||
shared_temp = Path(shared_td)
|
||
host_intermediate = shared_temp / host_src.name
|
||
vm_shared_temp = Path("/tmp/shared") / shared_temp.name
|
||
vm_intermediate = vm_shared_temp / host_src.name
|
||
|
||
self.succeed(make_command(["mkdir", "-p", vm_shared_temp]))
|
||
if host_src.is_dir():
|
||
shutil.copytree(host_src, host_intermediate)
|
||
else:
|
||
shutil.copy(host_src, host_intermediate)
|
||
self.succeed(make_command(["mkdir", "-p", vm_target.parent]))
|
||
self.succeed(make_command(["cp", "-r", vm_intermediate, vm_target]))
|
||
|
||
def copy_from_vm(self, source: str, target_dir: str = "") -> None:
|
||
"""Copy a file from the VM (specified by an in-VM source path) to a path
|
||
relative to `$out`. The file is copied via the `shared_dir` shared among
|
||
all the VMs (using a temporary directory).
|
||
"""
|
||
# Compute the source, target, and intermediate shared file names
|
||
vm_src = Path(source)
|
||
with tempfile.TemporaryDirectory(dir=self.shared_dir) as shared_td:
|
||
shared_temp = Path(shared_td)
|
||
vm_shared_temp = Path("/tmp/shared") / shared_temp.name
|
||
vm_intermediate = vm_shared_temp / vm_src.name
|
||
intermediate = shared_temp / vm_src.name
|
||
# Copy the file to the shared directory inside VM
|
||
self.succeed(make_command(["mkdir", "-p", vm_shared_temp]))
|
||
self.succeed(make_command(["cp", "-r", vm_src, vm_intermediate]))
|
||
abs_target = self.out_dir / target_dir / vm_src.name
|
||
abs_target.parent.mkdir(exist_ok=True, parents=True)
|
||
# Copy the file from the shared directory outside VM
|
||
if intermediate.is_dir():
|
||
shutil.copytree(intermediate, abs_target)
|
||
else:
|
||
shutil.copy(intermediate, abs_target)
|
||
|
||
def dump_tty_contents(self, tty: str) -> None:
|
||
"""Debugging: Dump the contents of the TTY<n>"""
|
||
self.execute("fold -w 80 /dev/vcs{} | systemd-cat".format(tty))
|
||
|
||
def _get_screen_text_variants(self, model_ids: Iterable[int]) -> List[str]:
|
||
with tempfile.TemporaryDirectory() as tmpdir:
|
||
screenshot_path = os.path.join(tmpdir, "ppm")
|
||
self.send_monitor_command(f"screendump {screenshot_path}")
|
||
return _perform_ocr_on_screenshot(screenshot_path, model_ids)
|
||
|
||
def get_screen_text_variants(self) -> List[str]:
|
||
return self._get_screen_text_variants([0, 1, 2])
|
||
|
||
def get_screen_text(self) -> str:
|
||
return self._get_screen_text_variants([2])[0]
|
||
|
||
def wait_for_text(self, regex: str) -> None:
|
||
def screen_matches(last: bool) -> bool:
|
||
variants = self.get_screen_text_variants()
|
||
for text in variants:
|
||
if re.search(regex, text) is not None:
|
||
return True
|
||
|
||
if last:
|
||
self.log("Last OCR attempt failed. Text was: {}".format(variants))
|
||
|
||
return False
|
||
|
||
with self.nested("waiting for {} to appear on screen".format(regex)):
|
||
retry(screen_matches)
|
||
|
||
def wait_for_console_text(self, regex: str) -> None:
|
||
with self.nested("waiting for {} to appear on console".format(regex)):
|
||
# Buffer the console output, this is needed
|
||
# to match multiline regexes.
|
||
console = io.StringIO()
|
||
while True:
|
||
try:
|
||
console.write(self.last_lines.get())
|
||
except queue.Empty:
|
||
self.sleep(1)
|
||
continue
|
||
console.seek(0)
|
||
matches = re.search(regex, console.read())
|
||
if matches is not None:
|
||
return
|
||
|
||
def send_key(self, key: str) -> None:
|
||
key = CHAR_TO_KEY.get(key, key)
|
||
self.send_monitor_command("sendkey {}".format(key))
|
||
time.sleep(0.01)
|
||
|
||
def start(self) -> None:
|
||
if self.booted:
|
||
return
|
||
|
||
self.log("starting vm")
|
||
|
||
def clear(path: Path) -> Path:
|
||
if path.exists():
|
||
path.unlink()
|
||
return path
|
||
|
||
def create_socket(path: Path) -> socket.socket:
|
||
s = socket.socket(family=socket.AF_UNIX, type=socket.SOCK_STREAM)
|
||
s.bind(str(path))
|
||
s.listen(1)
|
||
return s
|
||
|
||
monitor_socket = create_socket(clear(self.monitor_path))
|
||
shell_socket = create_socket(clear(self.shell_path))
|
||
self.process = self.start_command.run(
|
||
self.state_dir,
|
||
self.shared_dir,
|
||
self.monitor_path,
|
||
self.shell_path,
|
||
)
|
||
self.monitor, _ = monitor_socket.accept()
|
||
self.shell, _ = shell_socket.accept()
|
||
|
||
# Store last serial console lines for use
|
||
# of wait_for_console_text
|
||
self.last_lines: Queue = Queue()
|
||
|
||
def process_serial_output() -> None:
|
||
assert self.process
|
||
assert self.process.stdout
|
||
for _line in self.process.stdout:
|
||
# Ignore undecodable bytes that may occur in boot menus
|
||
line = _line.decode(errors="ignore").replace("\r", "").rstrip()
|
||
self.last_lines.put(line)
|
||
self.log_serial(line)
|
||
|
||
self.serial_thread = threading.Thread(target=process_serial_output)
|
||
self.serial_thread.start()
|
||
|
||
self.wait_for_monitor_prompt()
|
||
|
||
self.pid = self.process.pid
|
||
self.booted = True
|
||
|
||
self.log("QEMU running (pid {})".format(self.pid))
|
||
|
||
def cleanup_statedir(self) -> None:
|
||
shutil.rmtree(self.state_dir)
|
||
rootlog.log(f"deleting VM state directory {self.state_dir}")
|
||
rootlog.log("if you want to keep the VM state, pass --keep-vm-state")
|
||
|
||
def shutdown(self) -> None:
|
||
if not self.booted:
|
||
return
|
||
|
||
assert self.shell
|
||
self.shell.send("poweroff\n".encode())
|
||
self.wait_for_shutdown()
|
||
|
||
def crash(self) -> None:
|
||
if not self.booted:
|
||
return
|
||
|
||
self.log("forced crash")
|
||
self.send_monitor_command("quit")
|
||
self.wait_for_shutdown()
|
||
|
||
def wait_for_x(self) -> None:
|
||
"""Wait until it is possible to connect to the X server. Note that
|
||
testing the existence of /tmp/.X11-unix/X0 is insufficient.
|
||
"""
|
||
|
||
def check_x(_: Any) -> bool:
|
||
cmd = (
|
||
"journalctl -b SYSLOG_IDENTIFIER=systemd | "
|
||
+ 'grep "Reached target Current graphical"'
|
||
)
|
||
status, _ = self.execute(cmd)
|
||
if status != 0:
|
||
return False
|
||
status, _ = self.execute("[ -e /tmp/.X11-unix/X0 ]")
|
||
return status == 0
|
||
|
||
with self.nested("waiting for the X11 server"):
|
||
retry(check_x)
|
||
|
||
def get_window_names(self) -> List[str]:
|
||
return self.succeed(
|
||
r"xwininfo -root -tree | sed 's/.*0x[0-9a-f]* \"\([^\"]*\)\".*/\1/; t; d'"
|
||
).splitlines()
|
||
|
||
def wait_for_window(self, regexp: str) -> None:
|
||
pattern = re.compile(regexp)
|
||
|
||
def window_is_visible(last_try: bool) -> bool:
|
||
names = self.get_window_names()
|
||
if last_try:
|
||
self.log(
|
||
"Last chance to match {} on the window list,".format(regexp)
|
||
+ " which currently contains: "
|
||
+ ", ".join(names)
|
||
)
|
||
return any(pattern.search(name) for name in names)
|
||
|
||
with self.nested("waiting for a window to appear"):
|
||
retry(window_is_visible)
|
||
|
||
def sleep(self, secs: int) -> None:
|
||
# We want to sleep in *guest* time, not *host* time.
|
||
self.succeed(f"sleep {secs}")
|
||
|
||
def forward_port(self, host_port: int = 8080, guest_port: int = 80) -> None:
|
||
"""Forward a TCP port on the host to a TCP port on the guest.
|
||
Useful during interactive testing.
|
||
"""
|
||
self.send_monitor_command(
|
||
"hostfwd_add tcp::{}-:{}".format(host_port, guest_port)
|
||
)
|
||
|
||
def block(self) -> None:
|
||
"""Make the machine unreachable by shutting down eth1 (the multicast
|
||
interface used to talk to the other VMs). We keep eth0 up so that
|
||
the test driver can continue to talk to the machine.
|
||
"""
|
||
self.send_monitor_command("set_link virtio-net-pci.1 off")
|
||
|
||
def unblock(self) -> None:
|
||
"""Make the machine reachable."""
|
||
self.send_monitor_command("set_link virtio-net-pci.1 on")
|
||
|
||
def release(self) -> None:
|
||
if self.pid is None:
|
||
return
|
||
rootlog.info(f"kill machine (pid {self.pid})")
|
||
assert self.process
|
||
assert self.shell
|
||
assert self.monitor
|
||
assert self.serial_thread
|
||
|
||
self.process.terminate()
|
||
self.shell.close()
|
||
self.monitor.close()
|
||
self.serial_thread.join()
|
||
|
||
def run_callbacks(self) -> None:
|
||
for callback in self.callbacks:
|
||
callback()
|