镜像自地址
https://github.com/A6-9V/MQL5-Google-Onedrive.git
已同步 2026-04-11 08:10:56 +00:00
cb6b175fbf
This commit introduces several performance optimizations to the Flask web dashboard: 1. Consolidated file metadata checks in `MarkdownCache` using `os.stat()`. This reduces the number of system calls per request by retrieving both file existence and modification time in a single operation. 2. Extracted the large HTML template into a module-level constant `DASHBOARD_TEMPLATE`. This eliminates redundant memory allocations and string concatenations within the request lifecycle. 3. Pre-defined markdown file paths as constants to avoid repeated `os.path.join()` calls. 4. Simplified `render_template_string` calls by hardcoding static values (like the footer year). These changes reduce CPU overhead and latency for both the main dashboard and the health check endpoint. Verified via integration tests and Playwright screenshots.
118 行
4.9 KiB
Python
118 行
4.9 KiB
Python
import os
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import sys
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from flask import Flask, render_template_string
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import markdown
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app = Flask(__name__)
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# --- ⚡ Bolt: Performance optimization - Cache rendered Markdown to avoid redundant processing.
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# Module-level path definitions to avoid repeated path joining.
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BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
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README_PATH = os.path.join(BASE_DIR, 'README.md')
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VERIFICATION_PATH = os.path.join(BASE_DIR, 'VERIFICATION.md')
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class MarkdownCache:
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"""⚡ Bolt: Simple cache for rendered markdown files with mtime validation."""
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def __init__(self, filepath, name):
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self.filepath = filepath
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self.name = name
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self.cached_html = ""
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self.last_mtime = 0
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def get_html(self):
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"""Returns cached HTML or re-renders if the file has changed."""
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try:
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# ⚡ Bolt: Use os.stat() to get metadata in a single system call instead of exists() + getmtime()
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try:
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stat_result = os.stat(self.filepath)
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except FileNotFoundError:
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return f"<p>{self.name} not found.</p>"
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current_mtime = stat_result.st_mtime
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if current_mtime > self.last_mtime:
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# File has changed or was never loaded
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with open(self.filepath, 'r', encoding='utf-8') as f:
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content = f.read()
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self.cached_html = markdown.markdown(content)
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self.last_mtime = current_mtime
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return self.cached_html
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except Exception as e:
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return f"<p>Error loading {self.name}: {str(e)}</p>"
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# Initialize caches
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readme_cache = MarkdownCache(README_PATH, "README.md")
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verification_cache = MarkdownCache(VERIFICATION_PATH, "VERIFICATION.md")
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# ⚡ Bolt: Define template as a module-level constant to avoid re-allocation on every request.
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# ⚡ Bolt: Hardcode year=2026 to simplify rendering and avoid passing constant values.
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DASHBOARD_TEMPLATE = """
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<!DOCTYPE html>
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<html>
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<head>
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<title>MQL5 Trading Automation Dashboard</title>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<style>
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body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; line-height: 1.6; max-width: 1000px; margin: 0 auto; padding: 20px; background: #f0f2f5; color: #1c1e21; }
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.card { background: white; padding: 30px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); margin-bottom: 20px; }
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h1, h2 { color: #050505; border-bottom: 1px solid #ddd; padding-bottom: 10px; }
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pre { background: #f8f9fa; padding: 15px; border-radius: 5px; overflow-x: auto; border: 1px solid #eee; }
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.status-badge { display: inline-block; padding: 4px 12px; border-radius: 15px; font-weight: bold; background: #42b983; color: white; }
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.nav { margin-bottom: 20px; background: #fff; padding: 10px 20px; border-radius: 8px; box-shadow: 0 1px 2px rgba(0,0,0,0.1); }
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.nav a { margin-right: 15px; color: #1877f2; text-decoration: none; font-weight: bold; }
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.nav a:hover { text-decoration: underline; }
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footer { text-align: center; margin-top: 40px; color: #65676b; font-size: 0.9em; }
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img { max-width: 100%; height: auto; }
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table { border-collapse: collapse; width: 100%; margin-bottom: 1em; }
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th, td { text-align: left; padding: 8px; border-bottom: 1px solid #ddd; }
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th { background-color: #f8f9fa; }
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</style>
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</head>
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<body>
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<div class="nav">
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<a href="#status">System Status</a>
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<a href="#docs">Documentation</a>
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</div>
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<div id="status" class="card">
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<h1>System Status <span class="status-badge">ONLINE</span></h1>
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<p>MQL5 Trading Automation is running.</p>
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{{ html_verification|safe }}
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</div>
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<div id="docs" class="card">
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<h2>Project Documentation</h2>
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{{ html_readme|safe }}
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</div>
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<footer>
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<p>© 2026 MQL5 Trading Automation | Dashboard v1.0.0</p>
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</footer>
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<!-- Vercel Web Analytics -->
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<script>
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window.va = window.va || function () { (window.vaq = window.vaq || []).push(arguments); };
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</script>
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<script defer src="/_vercel/insights/script.js"></script>
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</body>
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</html>
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"""
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@app.route('/')
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@app.route('/health')
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def health_check():
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try:
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# ⚡ Bolt: Use cached content to avoid redundant I/O and markdown rendering on every request.
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html_readme = readme_cache.get_html()
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html_verification = verification_cache.get_html()
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return render_template_string(DASHBOARD_TEMPLATE,
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html_readme=html_readme,
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html_verification=html_verification)
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except Exception as e:
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return f"Error: {str(e)}", 500
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if __name__ == '__main__':
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port = int(os.environ.get('PORT', 8080))
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print(f"Starting web dashboard on port {port}...")
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app.run(host='0.0.0.0', port=port)
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