mirror of https://github.com/Textualize/rich.git
82 lines
2.0 KiB
Python
82 lines
2.0 KiB
Python
"""Lite simulation of the top linux command."""
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import datetime
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import random
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import time
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from dataclasses import dataclass
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from rich import box
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from rich.console import Console
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from rich.live import Live
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from rich.table import Table
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from typing_extensions import Literal
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@dataclass
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class Process:
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pid: int
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command: str
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cpu_percent: float
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memory: int
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start_time: datetime.datetime
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thread_count: int
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state: Literal["running", "sleeping"]
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@property
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def memory_str(self) -> str:
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if self.memory > 1e6:
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return f"{int(self.memory/1e6)}M"
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if self.memory > 1e3:
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return f"{int(self.memory/1e3)}K"
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return str(self.memory)
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@property
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def time_str(self) -> str:
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return str(datetime.datetime.now() - self.start_time)
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def generate_process(pid: int) -> Process:
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return Process(
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pid=pid,
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command=f"Process {pid}",
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cpu_percent=random.random() * 20,
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memory=random.randint(10, 200) ** 3,
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start_time=datetime.datetime.now()
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- datetime.timedelta(seconds=random.randint(0, 500) ** 2),
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thread_count=random.randint(1, 32),
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state="running" if random.randint(0, 10) < 8 else "sleeping",
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)
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def create_process_table(height: int) -> Table:
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processes = sorted(
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[generate_process(pid) for pid in range(height)],
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key=lambda p: p.cpu_percent,
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reverse=True,
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)
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table = Table(
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"PID", "Command", "CPU %", "Memory", "Time", "Thread #", "State", box=box.SIMPLE
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)
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for process in processes:
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table.add_row(
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str(process.pid),
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process.command,
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f"{process.cpu_percent:.1f}",
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process.memory_str,
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process.time_str,
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str(process.thread_count),
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process.state,
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)
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return table
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console = Console()
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with Live(console=console, screen=True, auto_refresh=False) as live:
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while True:
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live.update(create_process_table(console.size.height - 4), refresh=True)
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time.sleep(1)
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