Merge branch 'fallback-template' into 'v3'
Add a fallback page template. See merge request openflexure/openflexure-microscope-server!500
This commit is contained in:
Julian Stirling
commit
323bbda7aa
2 changed files with 181 additions and 0 deletions
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@ -7,6 +7,7 @@ import os
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from argparse import Namespace
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from copy import copy
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from functools import wraps
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from pathlib import Path
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from typing import Any, Callable, Optional
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import uvicorn
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@ -31,6 +32,7 @@ from .serve_static_files import add_static_files
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LOGGER = logging.getLogger(__name__)
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DEVELOPER_MODE = os.getenv("OFM_SERVER_DEV_MODE", "false").lower() == "true"
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_TEMPLATE_PATH = Path(__file__).with_name("fallback.html.jinja")
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def set_shutdown_function(shutdown_function: Callable[[], None]) -> None:
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@ -154,6 +156,7 @@ def serve_from_cli(argv: Optional[list[str]] = None) -> None:
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log_history = None
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app = fallback.app
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app.set_template_str(_TEMPLATE_PATH.read_text(encoding="utf-8"))
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app.set_context(
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fallback.FallbackContext(
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server=server, config=lt_config, error=e, log_history=log_history
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178
src/openflexure_microscope_server/server/fallback.html.jinja
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178
src/openflexure_microscope_server/server/fallback.html.jinja
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@ -0,0 +1,178 @@
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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<title>OpenFlexure Microscope Server Failed to Start</title>
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<meta name="description" content="The OpenFlexure Microscope Server failed to start due to a configuration or runtime error. Diagnostic information is shown below." />
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<style>
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:root {
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/* UI colours */
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--bg: #f8fafc;
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--panel: #ffffff;
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--text: #1f2933;
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--muted: #6b7280;
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--border: #e5e7eb;
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--code-bg: #f1f5f9;
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--error-bg: #fee2e2;
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--error-border: #fecaca;
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--error-text: #7f1d1d;
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}
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* {
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box-sizing: border-box;
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}
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body {
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margin: 0;
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padding: 2rem;
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font-family: system-ui, -apple-system, BlinkMacSystemFont,
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"Segoe UI", Roboto, Helvetica, Arial, sans-serif;
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background: var(--bg);
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color: var(--text);
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line-height: 1.5;
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}
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.container {
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max-width: 900px;
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margin: 0 auto;
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}
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.panel {
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background: var(--panel);
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border: 1px solid var(--border);
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border-radius: 8px;
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padding: 2rem;
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box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
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}
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.header {
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display: flex;
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align-items: center;
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gap: 1rem;
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margin-bottom: 1.5rem;
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}
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.logo {
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width: 48px;
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height: 48px;
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flex-shrink: 0;
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}
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h1 {
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margin: 0;
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font-size: 1.75rem;
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}
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h2 {
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margin-top: 2rem;
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font-size: 1.25rem;
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border-bottom: 1px solid var(--border);
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padding-bottom: 0.25rem;
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}
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p {
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margin: 0.5rem 0 1rem;
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}
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.muted {
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color: var(--muted);
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}
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.error-message {
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padding: 1rem;
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background: var(--error-bg);
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border: 1px solid var(--error-border);
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border-radius: 6px;
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color: var(--error-text);
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margin: 1.5rem 0;
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font-weight: 500;
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}
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ul {
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padding-left: 1.25rem;
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}
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li {
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margin: 0.25rem 0;
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}
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pre {
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background: var(--code-bg);
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border: 1px solid var(--border);
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border-radius: 6px;
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padding: 1rem;
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overflow-x: auto;
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white-space: pre-wrap;
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word-break: break-word;
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font-size: 0.875rem;
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}
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footer {
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margin-top: 2rem;
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text-align: center;
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font-size: 0.8rem;
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color: var(--muted);
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}
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</style>
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</head>
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<body>
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<main class="container">
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<section class="panel">
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<div class="header">
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<!-- Inline Openflexure Logo -->
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<svg height="3rem" viewBox="0 0 263 163" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" xmlns:serif="http://www.serif.com/" style="fill-rule:evenodd;clip-rule:evenodd;stroke-linejoin:round;stroke-miterlimit:2;"><g id="path3773" transform="matrix(0.376342,0,0,0.376342,-8.65757,-85.6939)"><path d="M212.85,344.652C234.052,276.913 297.347,227.702 372.047,227.702C446.747,227.702 510.042,276.913 531.245,344.652L531.246,344.656C531.789,346.391 532.304,348.138 532.791,349.896C556.452,421.618 655.593,393.868 655.593,393.868L721.09,563.056L472.356,659.347L430.306,550.728L430.129,550.794L406.853,490.142C408.621,489.464 410.361,488.736 412.072,487.962C419.736,484.232 426.404,480.109 432.198,475.703C447.995,463.209 459.586,446.041 465.257,426.69C473.38,395.32 463.384,366.691 463.101,365.891C449.309,328.959 413.54,302.366 372.047,302.366C330.554,302.366 294.785,328.959 280.994,365.891C280.711,366.689 270.714,395.319 278.838,426.69C284.509,446.041 296.099,463.209 311.897,475.703C317.69,480.109 324.359,484.232 332.023,487.962C333.734,488.736 335.474,489.464 337.242,490.142L337.166,490.34L313.965,550.794L313.788,550.728L271.739,659.347L23.004,563.056L88.501,393.868C88.501,393.868 187.642,421.618 211.303,349.896C211.79,348.138 212.306,346.391 212.849,344.656L212.85,344.652Z" style="fill:rgb(197,36,127);fill-rule:nonzero;"/></g></svg>
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<h1>The OpenFlexure Microscope Server couldn't start.</h1>
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</div>
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<p class="muted">
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The OpenFlexure Microscope Server failed during startup. This is
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usually caused by an invalid configuration, missing dependency,
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or a runtime exception. This page provides logging information for debugging.
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</p>
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<p class="muted">
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You can get help with your microscope on the
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<a href="https://openflexure.discourse.group/" target="_blank" rel="noopener noreferrer">OpenFlexure Forum</a>
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(https://openflexure.discourse.group/).
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</p>
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{% if error_message %}
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<div class="error-message">
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{{ error_message }}
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</div>
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{% endif %}
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{% if things %}
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<h2>The following Things loaded successfully:</h2>
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<ul>
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{% for name in things %}
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<li>{{ name }}</li>
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{% endfor %}
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</ul>
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{% endif %}
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<h2>Configuration</h2>
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<pre>{{ config }}</pre>
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<h2>Traceback</h2>
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<pre>{{ traceback }}</pre>
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<h2>Logging</h2>
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{% if logginginfo %}
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<pre>{{ logginginfo }}</pre>
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{% else %}
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<p class="muted">No logging information available.</p>
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{% endif %}
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</section>
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<footer>
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LabThings fallback server
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</footer>
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</main>
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</body>
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</html>
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