mirror of
https://github.com/mofeng-git/One-KVM.git
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280 lines
11 KiB
Python
280 lines
11 KiB
Python
#!/usr/bin/env python3
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# ========================================================================== #
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# #
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# KVMD-OLED - A small OLED daemon for PiKVM. #
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# #
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# Copyright (C) 2018 Maxim Devaev <mdevaev@gmail.com> #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <https://www.gnu.org/licenses/>. #
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# #
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# ========================================================================== #
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import sys
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import os
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import socket
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import signal
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import itertools
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import logging
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import datetime
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import time
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import netifaces
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import psutil
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import usb.core
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from luma.core import cmdline as luma_cmdline
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from luma.core.device import device as luma_device
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from luma.core.render import canvas as luma_canvas
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from PIL import Image
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from PIL import ImageFont
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# =====
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_logger = logging.getLogger("oled")
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# =====
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def _get_ip() -> tuple[str, str]:
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try:
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gws = netifaces.gateways()
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if "default" in gws:
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for proto in [socket.AF_INET, socket.AF_INET6]:
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if proto in gws["default"]:
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iface = gws["default"][proto][1]
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addrs = netifaces.ifaddresses(iface)
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return (iface, addrs[proto][0]["addr"])
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for iface in netifaces.interfaces():
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if not iface.startswith(("lo", "docker")):
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addrs = netifaces.ifaddresses(iface)
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for proto in [socket.AF_INET, socket.AF_INET6]:
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if proto in addrs:
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return (iface, addrs[proto][0]["addr"])
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except Exception:
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# _logger.exception("Can't get iface/IP")
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pass
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return ("<no-iface>", "<no-ip>")
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def _get_uptime() -> str:
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uptime = datetime.timedelta(seconds=int(time.time() - psutil.boot_time()))
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pl = {"days": uptime.days}
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(pl["hours"], rem) = divmod(uptime.seconds, 3600)
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(pl["mins"], pl["secs"]) = divmod(rem, 60)
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return "{days}d {hours}h {mins}m".format(**pl)
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def _get_temp(fahrenheit: bool) -> str:
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try:
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with open("/sys/class/thermal/thermal_zone0/temp") as temp_file:
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temp = int((temp_file.read().strip())) / 1000
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if fahrenheit:
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temp = temp * 9 / 5 + 32
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return f"{temp:.1f}\u00b0F"
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return f"{temp:.1f}\u00b0C"
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except Exception:
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# _logger.exception("Can't read temp")
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return "<no-temp>"
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def _get_cpu() -> str:
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st = psutil.cpu_times_percent()
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user = st.user - st.guest
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nice = st.nice - st.guest_nice
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idle_all = st.idle + st.iowait
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system_all = st.system + st.irq + st.softirq
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virtual = st.guest + st.guest_nice
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total = max(1, user + nice + system_all + idle_all + st.steal + virtual)
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percent = int(
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st.nice / total * 100
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+ st.user / total * 100
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+ system_all / total * 100
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+ (st.steal + st.guest) / total * 100
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)
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return f"{percent}%"
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def _get_mem() -> str:
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return f"{int(psutil.virtual_memory().percent)}%"
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# =====
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class Screen:
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def __init__(
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self,
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device: luma_device,
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font: ImageFont.FreeTypeFont,
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font_spacing: int,
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offset: tuple[int, int],
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) -> None:
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self.__device = device
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self.__font = font
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self.__font_spacing = font_spacing
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self.__offset = offset
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def draw_text(self, text: str, offset_x: int=0) -> None:
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with luma_canvas(self.__device) as draw:
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offset = list(self.__offset)
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offset[0] += offset_x
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draw.multiline_text(offset, text, font=self.__font, spacing=self.__font_spacing, fill="white")
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def draw_image(self, image_path: str) -> None:
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with luma_canvas(self.__device) as draw:
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draw.bitmap(self.__offset, Image.open(image_path).convert("1"), fill="white")
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def _detect_geometry() -> dict:
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with open("/proc/device-tree/model") as file:
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is_cm4 = ("Compute Module 4" in file.read())
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has_usb = bool(list(usb.core.find(find_all=True)))
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if is_cm4 and has_usb:
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return {"height": 64, "rotate": 2}
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return {"height": 32, "rotate": 0}
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def _get_data_path(subdir: str, name: str) -> str:
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if not name.startswith("@"):
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return name # Just a regular system path
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name = name[1:]
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module_path = sys.modules[__name__].__file__
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assert module_path is not None
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return os.path.join(os.path.dirname(module_path), subdir, name)
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# =====
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def main() -> None: # pylint: disable=too-many-locals,too-many-branches,too-many-statements
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logging.basicConfig(level=logging.INFO, format="%(message)s")
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logging.getLogger("PIL").setLevel(logging.ERROR)
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parser = luma_cmdline.create_parser(description="Display FQDN and IP on the OLED")
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parser.set_defaults(**_detect_geometry())
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parser.add_argument("--font", default="@ProggySquare.ttf", type=(lambda arg: _get_data_path("fonts", arg)), help="Font path")
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parser.add_argument("--font-size", default=16, type=int, help="Font size")
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parser.add_argument("--font-spacing", default=2, type=int, help="Font line spacing")
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parser.add_argument("--offset-x", default=0, type=int, help="Horizontal offset")
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parser.add_argument("--offset-y", default=0, type=int, help="Vertical offset")
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parser.add_argument("--interval", default=5, type=int, help="Screens interval")
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parser.add_argument("--image", default="", type=(lambda arg: _get_data_path("pics", arg)), help="Display some image, wait a single interval and exit")
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parser.add_argument("--text", default="", help="Display some text, wait a single interval and exit")
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parser.add_argument("--pipe", action="store_true", help="Read and display lines from stdin until EOF, wait a single interval and exit")
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parser.add_argument("--clear-on-exit", action="store_true", help="Clear display on exit")
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parser.add_argument("--contrast", default=64, type=int, help="Set OLED contrast, values from 0 to 255")
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parser.add_argument("--fahrenheit", action="store_true", help="Display temperature in Fahrenheit instead of Celsius")
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options = parser.parse_args(sys.argv[1:])
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if options.config:
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config = luma_cmdline.load_config(options.config)
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options = parser.parse_args(config + sys.argv[1:])
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device = luma_cmdline.create_device(options)
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device.cleanup = (lambda _: None)
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screen = Screen(
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device=device,
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font=ImageFont.truetype(options.font, options.font_size),
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font_spacing=options.font_spacing,
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offset=(options.offset_x, options.offset_y),
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)
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if options.display not in luma_cmdline.get_display_types()["emulator"]:
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_logger.info("Iface: %s", options.interface)
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_logger.info("Display: %s", options.display)
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_logger.info("Size: %dx%d", device.width, device.height)
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options.contrast = min(max(options.contrast, 0), 255)
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_logger.info("Contrast: %d", options.contrast)
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device.contrast(options.contrast)
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try:
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if options.image:
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screen.draw_image(options.image)
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time.sleep(options.interval)
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elif options.text:
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screen.draw_text(options.text.replace("\\n", "\n"))
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time.sleep(options.interval)
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elif options.pipe:
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text = ""
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for line in sys.stdin:
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text += line
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if "\0" in text:
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screen.draw_text(text.replace("\0", ""))
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text = ""
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time.sleep(options.interval)
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else:
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stop_reason: (str | None) = None
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def sigusr_handler(signum: int, _) -> None: # type: ignore
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nonlocal stop_reason
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if signum in (signal.SIGINT, signal.SIGTERM):
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stop_reason = ""
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elif signum == signal.SIGUSR1:
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stop_reason = "Rebooting...\nPlease wait"
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elif signum == signal.SIGUSR2:
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stop_reason = "Halted"
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for signum in [signal.SIGTERM, signal.SIGINT, signal.SIGUSR1, signal.SIGUSR2]:
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signal.signal(signum, sigusr_handler)
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hb = itertools.cycle(r"/-\|") # Heartbeat
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swim = 0
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def draw(text: str) -> None:
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nonlocal swim
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count = 0
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while (count < max(options.interval, 1) * 2) and stop_reason is None:
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screen.draw_text(
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text=text.replace("__hb__", next(hb)),
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offset_x=(3 if swim < 0 else 0),
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)
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count += 1
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if swim >= 1200:
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swim = -1200
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else:
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swim += 1
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time.sleep(0.5)
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if device.height >= 64:
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while stop_reason is None:
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(iface, ip) = _get_ip()
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text = f"{socket.getfqdn()}\n{ip}\niface: {iface}\ntemp: {_get_temp(options.fahrenheit)}"
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text += f"\ncpu: {_get_cpu()} mem: {_get_mem()}\n(__hb__) {_get_uptime()}"
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draw(text)
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else:
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summary = True
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while stop_reason is None:
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if summary:
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text = f"{socket.getfqdn()}\n(__hb__) {_get_uptime()}\ntemp: {_get_temp(options.fahrenheit)}"
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else:
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(iface, ip) = _get_ip()
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text = "%s\n(__hb__) iface: %s\ncpu: %s mem: %s" % (ip, iface, _get_cpu(), _get_mem())
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draw(text)
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summary = (not summary)
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if stop_reason is not None:
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if len(stop_reason) > 0:
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options.clear_on_exit = False
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screen.draw_text(stop_reason)
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while len(stop_reason) > 0:
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time.sleep(0.1)
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except (SystemExit, KeyboardInterrupt):
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pass
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if options.clear_on_exit:
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screen.draw_text("")
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