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refactor(suspension): serve via /suspended route on default-backend, drop bk_suspended
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The previous design used a separate whp-suspended container (nginx:alpine
serving a static 503 page) reachable via a dedicated bk_suspended backend.
That was over-engineered — haproxy-manager-base already ships a default-app
Flask server on :8080 that serves /default-page and /blocked-ip via
path-rewrite ACLs. Mirroring that pattern lets the suspension page live
in the SAME container, no extra image to build, no extra container to
run/health-monitor.

Changes:
- Add /suspended Flask route on default_app returning 503 + suspended_page.html
- Add templates/suspended_page.html (dark-themed 503 page)
- hap_listener.tpl: 'http-request set-path /suspended' + 'use_backend
  default-backend' when host is in suspended_domains.list (same pattern
  as is_blocked_ip)
- Rename env var from HAPROXY_SUSPENSION_BACKEND (a target hostport) to
  HAPROXY_SUSPENSION_ENABLED (a bool); accepts 1/true/yes/on (case-insensitive)
- Remove hap_suspended_backend.tpl and its rendering in generate_config

Non-WHP deployments (env var unset) see byte-identical haproxy.cfg as before
(verified via jinja2 render diff).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Josh Knapp
2026-05-13 12:08:45 -07:00
parent 6fd07b4c54
commit 5e5234cb14
4 changed files with 88 additions and 42 deletions
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templates/suspended_page.html Normal file
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="robots" content="noindex,nofollow">
<title>Site temporarily unavailable</title>
<style>
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
text-align: center;
padding: 50px 20px;
background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
margin: 0;
min-height: 100vh;
display: flex;
align-items: center;
justify-content: center;
color: #e2e8f0;
}
.container {
background: #1e293b;
border: 1px solid #334155;
padding: 40px;
border-radius: 12px;
box-shadow: 0 10px 30px rgba(0,0,0,0.4);
max-width: 560px;
width: 100%;
}
h1 {
color: #f1f5f9;
margin: 0 0 20px;
font-size: 1.75em;
font-weight: 600;
}
p {
color: #cbd5e1;
line-height: 1.7;
margin: 0 0 12px;
font-size: 1.05em;
}
.note {
color: #94a3b8;
font-size: 0.9em;
margin-top: 24px;
padding-top: 24px;
border-top: 1px solid #334155;
}
</style>
</head>
<body>
<div class="container">
<h1>This site is temporarily unavailable.</h1>
<p>The site you are trying to reach is currently offline.</p>
<p class="note">Site owners: please contact support to restore service.</p>
</div>
</body>
</html>