Отслеживание проблем журнала Yii2 в режиме CLI

// file: console/config/console-local.php
...
'components' => [
        'log' => [
            'flushInterval' => 10,
            'targets' => [
                'info' => [
                    'class' => 'yii\log\FileTarget',
                    'levels' => ['info'],
                    'logVars' => [],
                    'categories' => ['app'],
                    'logFile' => '@console/logs/info/' . date('Ymd') . '.log',
                    "prefix" => function ($message) {
                        return "";
                    }
                ],
                    ...
            ],
        ],
    ],
...

// file: console/controllers/TestController.php
namespace console\controllers;

use Yii;
use yii\console\Controller;

class TestController extends Controller
{
    public function actionShort()
    {
        Yii::info("This is a short test message", "app");
        sleep(3);
        Yii::info("Another short test message", "app");
        echo "Done!", PHP_EOL;
    }

    public function actionLong()
    {
        $count = 10000;
        for ($index = 0; $index < $count; ++ $index) {
            Yii::info("This is a long test message", "app");
            sleep(1);
            Yii::info("Another long test message", "app");
        }
        echo "Done!", PHP_EOL;
    }
}

// file: https://github.com/yiisoft/yii2/blob/master/framework/log/Logger.php
...
    /**
     * Logs a message with the given type and category.
     * If [[traceLevel]] is greater than 0, additional call stack information about
     * the application code will be logged as well.
     * @param string|array $message the message to be logged. This can be a simple string or a more
     * complex data structure that will be handled by a [[Target|log target]].
     * @param int $level the level of the message. This must be one of the following:
     * `Logger::LEVEL_ERROR`, `Logger::LEVEL_WARNING`, `Logger::LEVEL_INFO`, `Logger::LEVEL_TRACE`,
     * `Logger::LEVEL_PROFILE_BEGIN`, `Logger::LEVEL_PROFILE_END`.
     * @param string $category the category of the message.
     */
    public function log($message, $level, $category = 'application')
    {
        $time = microtime(true);
        $traces = [];
        if ($this->traceLevel > 0) {
            $count = 0;
            $ts = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
            array_pop($ts); // remove the last trace since it would be the entry script, not very useful
            foreach ($ts as $trace) {
                if (isset($trace['file'], $trace['line']) && strpos($trace['file'], YII2_PATH) !== 0) {
                    unset($trace['object'], $trace['args']);
                    $traces[] = $trace;
                    if (++$count >= $this->traceLevel) {
                        break;
                    }
                }
            }
        }
        $this->messages[] = [$message, $level, $category, $time, $traces, memory_get_usage()];
        if ($this->flushInterval > 0 && count($this->messages) >= $this->flushInterval) {
            $this->flush();
        }
    }
...

// file: https://github.com/yiisoft/yii2/blob/master/framework/log/Logger.php
....
    /**
     * Flushes log messages from memory to targets.
     * @param bool $final whether this is a final call during a request.
     */
    public function flush($final = false)
    {
        $messages = $this->messages;
        // https://github.com/yiisoft/yii2/issues/5619
        // new messages could be logged while the existing ones are being handled by targets
        $this->messages = [];
        if ($this->dispatcher instanceof Dispatcher) {
            $this->dispatcher->dispatch($messages, $final);
        }
    }
....

// file: https://github.com/yiisoft/yii2/blob/master/framework/log/Logger.php
...
    /**
     * Initializes the logger by registering [[flush()]] as a shutdown function.
     */
    public function init()
    {
        parent::init();
        register_shutdown_function(function () {
            // make regular flush before other shutdown functions, which allows session data collection and so on
            $this->flush();
            // make sure log entries written by shutdown functions are also flushed
            // ensure "flush()" is called last when there are multiple shutdown functions
            register_shutdown_function([$this, 'flush'], true);
        });
    }
...

// file: https://github.com/yiisoft/yii2/blob/master/framework/log/Dispatcher.php
...
    /**
     * Dispatches the logged messages to [[targets]].
     * @param array $messages the logged messages
     * @param bool $final whether this method is called at the end of the current application
     */
    public function dispatch($messages, $final)
    {
        $targetErrors = [];
        foreach ($this->targets as $target) {
            if ($target->enabled) {
                try {
                    $target->collect($messages, $final);
                } catch (\Exception $e) {
                    $target->enabled = false;
                    $targetErrors[] = [
                        'Unable to send log via ' . get_class($target) . ': ' . ErrorHandler::convertExceptionToString($e),
                        Logger::LEVEL_WARNING,
                        __METHOD__,
                        microtime(true),
                        [],
                    ];
                }
            }
        }

        if (!empty($targetErrors)) {
            $this->dispatch($targetErrors, true);
        }
    }
...

// file: https://github.com/yiisoft/yii2/blob/master/framework/log/Target.php
...
    /**
     * Processes the given log messages.
     * This method will filter the given messages with [[levels]] and [[categories]].
     * And if requested, it will also export the filtering result to specific medium (e.g. email).
     * @param array $messages log messages to be processed. See [[Logger::messages]] for the structure
     * of each message.
     * @param bool $final whether this method is called at the end of the current application
     */
    public function collect($messages, $final)
    {
        $this->messages = array_merge($this->messages, static::filterMessages($messages, $this->getLevels(), $this->categories, $this->except));
        $count = count($this->messages);
        if ($count > 0 && ($final || $this->exportInterval > 0 && $count >= $this->exportInterval)) {
            if (($context = $this->getContextMessage()) !== '') {
                $this->messages[] = [$context, Logger::LEVEL_INFO, 'application', YII_BEGIN_TIME];
            }
            // set exportInterval to 0 to avoid triggering export again while exporting
            $oldExportInterval = $this->exportInterval;
            $this->exportInterval = 0;
            $this->export();
            $this->exportInterval = $oldExportInterval;

            $this->messages = [];
        }
    }
....

// file: console/config/console-local.php
...
'components' => [
        'log' => [
            'flushInterval' => 10,
            'targets' => [
                'info' => [
                    'class' => 'yii\log\FileTarget',
                            'exportInterval' => 1,
                    'levels' => ['info'],
                            'logVars' => [],
                    'categories' => ['app'],
                    'logFile' => '@console/logs/info/' . date('Ymd') . '.log',
                    "prefix" => function ($message) {
                        return "";
                    }
                ],
                    ...
            ],
        ],
    ],
...

// file: console/controllers/TestController.php
...
    public function actionLong()
    {
        declare(ticks=1);
        pcntl_signal(SIGINT, function() {exit();});
        pcntl_signal(SIGTERM, function() {exit();});
        pcntl_signal(SIGKILL, function() {exit();});
        $count = 10000;
        for ($index = 0; $index < $count; ++ $index) {
            Yii::info("This is a long test message", "app");
            sleep(1);
            Yii::info("Another long test message", "app");
        }
        echo "Done!", PHP_EOL;
    }
....