468 lines
16 KiB
PHP
468 lines
16 KiB
PHP
<?php
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namespace app\controller;
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use support\Request;
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use support\Response;
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/**
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* 指标
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* 提供Prometheus格式的监控指标
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*/
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class MetricsController extends Base
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{
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/**
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* 无需登录及鉴权的方法
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* @var array
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*/
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protected $noNeedLogin = ['index'];
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/**
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* 指标数据存储
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*/
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protected static $metrics = [];
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/**
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* 指标类型定义
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*/
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const TYPE_COUNTER = 'counter';
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const TYPE_GAUGE = 'gauge';
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const TYPE_HISTOGRAM = 'histogram';
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const TYPE_SUMMARY = 'summary';
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/**
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* 获取指标数据
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*
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* @param Request $request
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* @return Response
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*/
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public function index(Request $request): Response
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{
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$metrics = [];
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// 系统基础指标
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$metrics[] = $this->getSystemMetrics();
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// PHP运行指标
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$metrics[] = $this->getPhpMetrics();
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// 应用业务指标
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$metrics[] = $this->getAppMetrics();
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// 数据库指标
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$metrics[] = $this->getDatabaseMetrics();
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// Redis指标
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$metrics[] = $this->getRedisMetrics();
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// HTTP请求指标
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$metrics[] = $this->getHttpMetrics();
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$content = implode("\n", array_filter($metrics));
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return response($content, 200, [
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'Content-Type' => 'text/plain; charset=utf-8'
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]);
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}
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/**
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* 获取系统指标
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*/
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protected function getSystemMetrics(): string
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{
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$metrics = [];
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// 内存使用
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$memoryUsage = memory_get_usage(true);
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$memoryPeak = memory_get_peak_usage(true);
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$memoryLimit = $this->getBytes(ini_get('memory_limit'));
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$metrics[] = $this->formatGauge('webman_memory_usage_bytes', 'Current memory usage in bytes', [], $memoryUsage);
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$metrics[] = $this->formatGauge('webman_memory_peak_bytes', 'Peak memory usage in bytes', [], $memoryPeak);
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$metrics[] = $this->formatGauge('webman_memory_limit_bytes', 'Memory limit in bytes', [], $memoryLimit);
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// CPU负载
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if (function_exists('sys_getloadavg')) {
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$load = sys_getloadavg();
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$metrics[] = $this->formatGauge('webman_system_load1', 'System load average over 1 minute', [], $load[0]);
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$metrics[] = $this->formatGauge('webman_system_load5', 'System load average over 5 minutes', [], $load[1]);
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$metrics[] = $this->formatGauge('webman_system_load15', 'System load average over 15 minutes', [], $load[2]);
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}
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// 磁盘使用
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$diskTotal = disk_total_space('/');
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$diskFree = disk_free_space('/');
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$diskUsed = $diskTotal - $diskFree;
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$metrics[] = $this->formatGauge('webman_disk_total_bytes', 'Total disk space in bytes', [], $diskTotal);
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$metrics[] = $this->formatGauge('webman_disk_free_bytes', 'Free disk space in bytes', [], $diskFree);
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$metrics[] = $this->formatGauge('webman_disk_used_bytes', 'Used disk space in bytes', [], $diskUsed);
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return implode("\n", $metrics);
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}
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/**
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* 获取PHP指标
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*/
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protected function getPhpMetrics(): string
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{
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$metrics = [];
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// PHP版本信息
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$metrics[] = $this->formatGauge('webman_php_version_info', 'PHP version information', [
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'version' => PHP_VERSION,
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'sapi' => PHP_SAPI
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], 1);
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// OPcache指标
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if (function_exists('opcache_get_status')) {
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$opcache = opcache_get_status(false);
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if ($opcache) {
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$metrics[] = $this->formatGauge('webman_opcache_enabled', 'OPcache enabled status', [], $opcache['opcache_enabled'] ? 1 : 0);
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$metrics[] = $this->formatGauge('webman_opcache_hit_rate', 'OPcache hit rate', [], $opcache['opcache_statistics']['opcache_hit_rate'] ?? 0);
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$metrics[] = $this->formatCounter('webman_opcache_hits_total', 'Total OPcache hits', [], $opcache['opcache_statistics']['hits'] ?? 0);
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$metrics[] = $this->formatCounter('webman_opcache_misses_total', 'Total OPcache misses', [], $opcache['opcache_statistics']['misses'] ?? 0);
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}
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}
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// 运行时间
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if (function_exists('posix_times')) {
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$times = posix_times();
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$metrics[] = $this->formatCounter('webman_cpu_user_seconds_total', 'Total user CPU time', [], $times['utime'] ?? 0);
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$metrics[] = $this->formatCounter('webman_cpu_system_seconds_total', 'Total system CPU time', [], $times['stime'] ?? 0);
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}
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return implode("\n", $metrics);
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}
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/**
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* 获取应用业务指标
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*/
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protected function getAppMetrics(): string
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{
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$metrics = [];
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// 应用信息
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$metrics[] = $this->formatGauge('webman_app_info', 'Application information', [
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'name' => config('app.name', 'webman'),
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'version' => config('app.version', '1.0.0'),
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'env' => config('app.debug') ? 'development' : 'production'
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], 1);
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// 启动时间
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$metrics[] = $this->formatGauge('webman_start_time_seconds', 'Application start time', [], defined('WEBMAN_START_TIME') ? WEBMAN_START_TIME : time());
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// 运行时长
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$startTime = defined('WEBMAN_START_TIME') ? WEBMAN_START_TIME : time();
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$uptime = time() - $startTime;
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$metrics[] = $this->formatCounter('webman_uptime_seconds_total', 'Total uptime in seconds', [], $uptime);
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return implode("\n", $metrics);
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}
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/**
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* 获取数据库指标
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*/
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protected function getDatabaseMetrics(): string
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{
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$metrics = [];
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try {
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// 数据库连接信息
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$dbConfig = config('database.connections.mysql');
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if ($dbConfig) {
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$metrics[] = $this->formatGauge('webman_db_config_info', 'Database configuration', [
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'host' => $dbConfig['hostname'] ?? 'unknown',
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'database' => $dbConfig['database'] ?? 'unknown',
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'charset' => $dbConfig['charset'] ?? 'utf8'
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], 1);
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}
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// 数据库连接状态 - 连接成功
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$metrics[] = $this->formatGauge('webman_db_up', 'Database connection status', [], 1);
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// 尝试获取数据库状态
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$db = \think\facade\Db::connect();
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$status = $db->query('SHOW STATUS');
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$statusMap = [];
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foreach ($status as $item) {
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$statusMap[$item['Variable_name']] = $item['Value'];
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}
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// 关键指标
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if (isset($statusMap['Threads_connected'])) {
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$metrics[] = $this->formatGauge('webman_db_threads_connected', 'Number of currently connected threads', [], (int)$statusMap['Threads_connected']);
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}
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if (isset($statusMap['Threads_running'])) {
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$metrics[] = $this->formatGauge('webman_db_threads_running', 'Number of threads running', [], (int)$statusMap['Threads_running']);
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}
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if (isset($statusMap['Queries'])) {
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$metrics[] = $this->formatCounter('webman_db_queries_total', 'Total number of queries', [], (int)$statusMap['Queries']);
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}
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if (isset($statusMap['Slow_queries'])) {
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$metrics[] = $this->formatCounter('webman_db_slow_queries_total', 'Total number of slow queries', [], (int)$statusMap['Slow_queries']);
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}
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if (isset($statusMap['Uptime'])) {
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$metrics[] = $this->formatCounter('webman_db_uptime_seconds', 'Database uptime in seconds', [], (int)$statusMap['Uptime']);
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}
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} catch (\Exception $e) {
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// 数据库连接失败，记录错误
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$metrics[] = $this->formatGauge('webman_db_up', 'Database connection status', [], 0);
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}
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return implode("\n", $metrics);
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}
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/**
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* 获取Redis指标
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*/
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protected function getRedisMetrics(): string
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{
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$metrics = [];
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try {
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$redis = \Bilulanlv\ThinkCache\facade\ThinkCache::handler();
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$info = $redis->info();
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// Redis连接状态
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$metrics[] = $this->formatGauge('webman_redis_up', 'Redis connection status', [], 1);
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// Redis版本
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if (isset($info['redis_version'])) {
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$metrics[] = $this->formatGauge('webman_redis_version_info', 'Redis version information', [
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'version' => $info['redis_version']
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], 1);
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}
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// 内存使用
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if (isset($info['used_memory'])) {
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$metrics[] = $this->formatGauge('webman_redis_memory_used_bytes', 'Redis memory used in bytes', [], (int)$info['used_memory']);
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}
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if (isset($info['used_memory_peak'])) {
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$metrics[] = $this->formatGauge('webman_redis_memory_peak_bytes', 'Redis peak memory used in bytes', [], (int)$info['used_memory_peak']);
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}
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// 连接数
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if (isset($info['connected_clients'])) {
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$metrics[] = $this->formatGauge('webman_redis_connected_clients', 'Number of connected clients', [], (int)$info['connected_clients']);
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}
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// 命令统计
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if (isset($info['total_commands_processed'])) {
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$metrics[] = $this->formatCounter('webman_redis_commands_processed_total', 'Total commands processed', [], (int)$info['total_commands_processed']);
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}
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// 键数量
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if (isset($info['db0'])) {
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preg_match('/keys=(\d+)/', $info['db0'], $matches);
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if (isset($matches[1])) {
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$metrics[] = $this->formatGauge('webman_redis_keys_total', 'Total number of keys', [], (int)$matches[1]);
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}
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}
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// 运行时间
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if (isset($info['uptime_in_seconds'])) {
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$metrics[] = $this->formatCounter('webman_redis_uptime_seconds', 'Redis uptime in seconds', [], (int)$info['uptime_in_seconds']);
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}
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} catch (\Exception $e) {
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$metrics[] = $this->formatGauge('webman_redis_up', 'Redis connection status', [], 0);
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}
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return implode("\n", $metrics);
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}
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/**
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* 获取HTTP请求指标
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*/
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protected function getHttpMetrics(): string
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{
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$metrics = [];
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// 请求计数器（这里需要从中间件或日志中统计，示例使用静态数据）
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$metrics[] = $this->formatCounter('webman_http_requests_total', 'Total HTTP requests', [
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'method' => 'GET',
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'status' => '200'
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], 0);
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$metrics[] = $this->formatCounter('webman_http_requests_total', 'Total HTTP requests', [
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'method' => 'POST',
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'status' => '200'
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], 0);
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// 请求处理时间（使用Gauge类型）
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$metrics[] = $this->formatGauge('webman_http_request_duration_seconds', 'HTTP request duration in seconds', [
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'method' => 'GET',
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'path' => '/metrics'
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], 0);
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// 响应大小
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$metrics[] = $this->formatCounter('webman_http_response_size_bytes_total', 'Total HTTP response size in bytes', [], 0);
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// 请求大小
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$metrics[] = $this->formatCounter('webman_http_request_size_bytes_total', 'Total HTTP request size in bytes', [], 0);
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return implode("\n", $metrics);
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}
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/**
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* 格式化Counter类型指标
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*/
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protected function formatCounter(string $name, string $help, array $labels, float $value): string
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{
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$output = [];
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$output[] = "# HELP {$name} {$help}";
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$output[] = "# TYPE {$name} counter";
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$labelStr = $this->formatLabels($labels);
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$output[] = $name . $labelStr . ' ' . $value;
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return implode("\n", $output);
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}
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/**
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* 格式化Gauge类型指标
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*/
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protected function formatGauge(string $name, string $help, array $labels, float $value): string
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{
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$output = [];
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$output[] = "# HELP {$name} {$help}";
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$output[] = "# TYPE {$name} gauge";
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$labelStr = $this->formatLabels($labels);
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$output[] = $name . $labelStr . ' ' . $value;
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return implode("\n", $output);
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}
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/**
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* 格式化Histogram类型指标
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*/
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protected function formatHistogram(string $name, string $help, array $labels, array $buckets): string
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{
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$output = [];
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$output[] = "# HELP {$name} {$help}";
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$output[] = "# TYPE {$name} histogram";
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// 如果没有提供桶数据，返回空直方图
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if (empty($buckets)) {
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$labelStr = $this->formatLabels($labels);
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$output[] = $name . '_bucket' . $labelStr . ',le="+Inf" 0';
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$output[] = $name . '_sum' . $labelStr . ' 0';
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$output[] = $name . '_count' . $labelStr . ' 0';
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}
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return implode("\n", $output);
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}
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/**
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* 格式化标签
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*/
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protected function formatLabels(array $labels): string
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{
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if (empty($labels)) {
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return '';
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}
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$pairs = [];
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foreach ($labels as $key => $value) {
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$pairs[] = $key . '="' . $this->escapeLabel($value) . '"';
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}
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return '{' . implode(',', $pairs) . '}';
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}
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/**
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* 转义标签值
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*/
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protected function escapeLabel(string $value): string
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{
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return str_replace(['\\', '"', "\n"], ['\\\\', '\\"', '\\n'], $value);
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}
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/**
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* 将PHP内存限制字符串转换为字节数
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*/
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protected function getBytes(string $val): int
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{
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$val = trim($val);
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$last = strtolower($val[strlen($val) - 1]);
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$val = (int) $val;
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switch ($last) {
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case 'g':
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$val *= 1024;
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case 'm':
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$val *= 1024;
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case 'k':
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$val *= 1024;
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}
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return $val;
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}
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/**
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* 增加计数器值（供其他控制器调用）
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*
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* @param string $name
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* @param array $labels
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* @param float $value
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*/
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public static function incCounter(string $name, array $labels = [], float $value = 1): void
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{
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$key = $name . json_encode($labels);
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if (!isset(self::$metrics[$key])) {
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self::$metrics[$key] = [
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'type' => 'counter',
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'name' => $name,
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'labels' => $labels,
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'value' => 0
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];
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}
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self::$metrics[$key]['value'] += $value;
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}
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/**
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* 设置Gauge值（供其他控制器调用）
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*
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* @param string $name
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* @param float $value
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* @param array $labels
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*/
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public static function setGauge(string $name, float $value, array $labels = []): void
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{
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$key = $name . json_encode($labels);
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self::$metrics[$key] = [
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'type' => 'gauge',
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'name' => $name,
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'labels' => $labels,
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'value' => $value
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];
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}
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/**
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* 记录HTTP请求指标（供中间件调用）
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*
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* @param string $method
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* @param string $path
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* @param int $status
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* @param float $duration
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* @param int $responseSize
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*/
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public static function recordHttpRequest(string $method, string $path, int $status, float $duration, int $responseSize = 0): void
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{
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$labels = [
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'method' => $method,
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'path' => $path,
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'status' => (string)$status
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];
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// 请求总数
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self::incCounter('webman_http_requests_total', $labels);
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// 响应大小
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self::incCounter('webman_http_response_size_bytes_total', $labels, $responseSize);
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}
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}
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