xspeed / includes / modules / Health / HealthModule.php

HealthModule.php in xSpeed Cache: AI-Powered Performance Hub with MCP, Caching & CDN 1.1.0, at includes/modules/Health/HealthModule.php

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1	<?php
2	/**
3	* Health module — read-only diagnostic surface for the dashboard.
4	*
5	* No settings_schema (this is a status panel, not a configuration
6	* surface). The React side renders a custom panel (HealthCard, declared
7	* via `ui_metadata.custom_panel`) instead of going through ModulePanel's
8	* schema-driven path.
9	*
10	* Data sources are all existing services:
11	* - Health::checks() — diagnostic rows
12	* - Cache::get_stats() — cached_pages / size / last_purge /
13	* hits_24h / misses_24h / hit_ratio
14	* - Hit_Counter::buckets() — 24 hourly buckets for the sparkline
15	* - Activity_Log::entries() — newest-first event log
16	*
17	* Tier: Free (per FEATURES.md "Cache Insights" — Cache Performance +
18	* Last 24h chart are Free; Recommendations + Frequently-missed-URLs
19	* stay Pro).
20	*
21	* @package XSpeed
22	*/
23
24	declare(strict_types=1);
25
26	namespace XSpeed\Modules\Health;
27
28	defined( 'ABSPATH' ) \|\| exit;
29
30	use XSpeed\Activity_Log;
31	use XSpeed\Cache;
32	use XSpeed\Health;
33	use XSpeed\Hit_Counter;
34	use XSpeed\Module;
35
36	final class HealthModule extends Module {
37
38	public const SLUG = 'health';
39	public const TIER = self::TIER_FREE;
40	public const VERSION = '1.0.0';
41
42	/**
43	* Surface the most important diagnostics in WordPress's built-in
44	* Site Health screen (Tools → Site Health → Status). Admins who
45	* never open the xSpeed dashboard still get a heads-up when
46	* static-rewrite is missing on Apache/LiteSpeed or when the nginx
47	* snippet hasn't been pasted yet — both lead to a 5-10× slowdown
48	* vs the optimal cache hit path.
49	*/
50	public function boot(): void {
51	add_filter( 'site_status_tests', array( $this, 'register_site_status_tests' ) );
52	}
53
54	public function register_site_status_tests( array $tests ): array {
55	$tests['direct']['xspeed_static_rewrite'] = array(
56	'label' => __( 'xSpeed static-rewrite cache', 'xspeed' ),
57	'test' => array( $this, 'site_status_static_rewrite' ),
58	);
59	return $tests;
60	}
61
62	/**
63	* Site Health test row. Reports green when the .htaccess block is
64	* present (Apache/LiteSpeed) or yellow with the nginx snippet
65	* embedded when nginx is detected. Skipped entirely when cache is
66	* disabled — no point telling the user to install a rewrite they
67	* haven't opted into.
68	*/
69	public function site_status_static_rewrite(): array {
70	$result = array(
71	'label' => __( 'xSpeed static-rewrite cache is active', 'xspeed' ),
72	'status' => 'good',
73	'badge' => array(
74	'label' => __( 'Performance', 'xspeed' ),
75	'color' => 'blue',
76	),
77	'description' => '<p>' . esc_html__( 'Cache hits bypass PHP for ~5-15ms TTFB.', 'xspeed' ) . '</p>',
78	'test' => 'xspeed_static_rewrite',
79	);
80
81	$cache_enabled = (bool) ( \XSpeed\Settings::get()['cache_enabled'] ?? false );
82	if ( ! $cache_enabled ) {
83	$result['label'] = __( 'xSpeed cache is disabled', 'xspeed' );
84	$result['status'] = 'recommended';
85	$result['description'] = '<p>' . esc_html__( 'Enable the page cache in the xSpeed dashboard to start serving cached HTML for non-logged-in visitors.', 'xspeed' ) . '</p>';
86	return $result;
87	}
88
89	$server_type = \XSpeed\Server::type();
90	if ( \XSpeed\Server::APACHE === $server_type \|\| \XSpeed\Server::LITESPEED === $server_type ) {
91	if ( ! \XSpeed\Cache::rewrite_installed() ) {
92	$result['label'] = __( 'xSpeed .htaccess rewrite block is missing', 'xspeed' );
93	$result['status'] = 'recommended';
94	$result['description'] = '<p>' . esc_html__( 'Without the static-rewrite block, cache hits go through the PHP drop-in (~85ms TTFB) instead of the web server (~5-15ms). Toggle Enable Cache off and on in xSpeed to reinstall the block.', 'xspeed' ) . '</p>';
95	}
96	return $result;
97	}
98
99	if ( \XSpeed\Server::NGINX === $server_type ) {
100	$snippet = \XSpeed\Cache::nginx_snippet();
101	$result['label'] = __( 'xSpeed nginx server config required', 'xspeed' );
102	$result['status'] = 'recommended';
103	$result['description'] = '<p>' . esc_html__( 'xSpeed can\'t write nginx config from PHP. Paste this snippet into your site\'s server { } block, then reload nginx so cache hits serve without booting PHP:', 'xspeed' ) . '</p>'
104	. '<pre style="white-space:pre;overflow-x:auto;background:#f6f7f7;border:1px solid #c3c4c7;border-radius:4px;padding:12px;font-size:12px;line-height:1.4;">'
105	. esc_html( (string) $snippet )
106	. '</pre>';
107	return $result;
108	}
109
110	// Unknown / IIS — no server-level rewrite path available; PHP
111	// drop-in is the best we can offer. Don't flag as broken.
112	$result['label'] = __( 'xSpeed PHP drop-in cache active', 'xspeed' );
113	$result['status'] = 'recommended';
114	$result['description'] = '<p>' . esc_html__( 'Static-rewrite caching needs Apache, LiteSpeed, or nginx. The PHP drop-in is still serving cache hits at ~85ms TTFB on this server.', 'xspeed' ) . '</p>';
115	return $result;
116	}
117
118	public function ui_metadata(): array {
119	return array(
120	'label' => 'Health',
121	'icon' => 'HeartPulse',
122	'description' => 'Diagnostics, hit ratio, and recent cache activity.',
123	// Health is the single host page for all Insights (FBS-83633):
124	// a Recommendations action card + Cache / Visitors / PageSpeed
125	// tabs. HealthPanel renders the Free cache diagnostics (the old
126	// HealthCard) as the Cache tab and hosts the Pro insight panels
127	// as the other tabs via ProSlot.
128	'custom_panel' => 'HealthPanel',
129	);
130	}
131
132	// No settings — explicit empty so Module::rest_routes() doesn't
133	// auto-wire the schema-driven GET+POST.
134	public function settings_schema(): array {
135	return array();
136	}
137
138	public function rest_routes(): array {
139	return array(
140	array(
141	'path' => '/',
142	'methods' => 'GET',
143	'callback' => array( $this, 'rest_get_payload' ),
144	),
145	);
146	}
147
148	public function cli_commands(): array {
149	return array(
150	array(
151	'name' => 'xspeed health',
152	'callback' => array( $this, 'cli_handler' ),
153	'shortdesc' => 'Print diagnostic checks + cache stats + recent activity.',
154	'synopsis' => array(),
155	),
156	);
157	}
158
159	/**
160	* Single endpoint that backs the dashboard panel. Refreshed lazily by
161	* the React side; cheap enough that aggregating into one response is
162	* the right call (the buckets array is at most 24 entries; activity
163	* is capped at 50).
164	*/
165	public function rest_get_payload( \WP_REST_Request $request ) {
166	return rest_ensure_response( $this->payload() );
167	}
168
169	public function payload(): array {
170	return array(
171	'checks' => Health::checks(),
172	'stats' => Cache::get_stats(),
173	'buckets' => Hit_Counter::buckets(),
174	'activity' => Activity_Log::entries(),
175	);
176	}
177
178	public function cli_handler( array $args, array $assoc ): void {
179	$payload = $this->payload();
180	\WP_CLI::log( '== Checks ==' );
181	foreach ( $payload['checks'] as $c ) {
182	\WP_CLI::log( sprintf( '[%s] %s — %s', strtoupper( $c['tone'] ), $c['label'], $c['detail'] ) );
183	}
184	\WP_CLI::log( '' );
185	\WP_CLI::log( '== Stats (24h) ==' );
186	\WP_CLI::log( sprintf( 'Hits %d · Misses %d · Hit ratio %.2f%%', $payload['stats']['hits_24h'], $payload['stats']['misses_24h'], $payload['stats']['hit_ratio'] * 100 ) );
187	\WP_CLI::log( '' );
188	\WP_CLI::log( '== Recent activity ==' );
189	foreach ( array_slice( $payload['activity'], 0, 10 ) as $e ) {
190	\WP_CLI::log( sprintf( '%s [%s] %s', gmdate( 'Y-m-d H:i:s', $e['ts'] ), $e['severity'], $e['message'] ) );
191	}
192	}
193	}
194