Exteneded Yii CConsoleCommand

we moved here http://radzserg.com/2011/12/27/exteneded-yii-cconsolecommand/

Continue to write about yii and sharing my experience. Today I write about how do I exteneded CConsoleCommand.

First of all I wanna say that base class CConsoleCommand is all what you need to run console commands. And I extended it for my purposes. But everybody can want to do it in another way or add another functionality. So all of this is just an example of extending base class.

I've added few additional abilities

• pretty verbose method (add ./yiic myCommand --verbose)
• ability to run only one copy of script
• if verbose is set, show script execution time

<?php

/**
 * Extended yii console command
 *
 * @author: radzserg
 * @date: 11.04.11
 */
class ConsoleCommand extends CConsoleCommand
{

    const VERBOSE_ERROR = 'error';
    const VERBOSE_INFO = 'info';
    const VERBOSE_SYSTEM = 'system';

    public $verbose;

    private $_lockFile;

    // if false this means that multiple scripts can work simultaneously

    protected $_isSingletonScript = false;

    // calculate time execution time

    protected $_timeStart;

    protected function _verbose($message, $level=null, $type=null)
    {
        if (!$this->verbose) {
            return ;
        }

        $level = (int)$level;
        $indent = str_repeat("\t", $level);
        if ($type == self::VERBOSE_ERROR) {
            // message in red
            $message = "\033[31;1m" . $message . "\033[0m\n";
        } elseif ($type == self::VERBOSE_INFO) {
            // message in green
            $message = "\033[32;1m" . $message . "\033[0m\n";
        } elseif ($type == self::VERBOSE_SYSTEM) {
            $message = "\033[33;1m" . $message . "\033[0m\n";
        }

        echo $indent . date('H:i:s ') . $message . "\n";
    }

    protected function beforeAction($action,$params)
    {
        $this->_verbose("Start execution of " . get_class($this), null, self::VERBOSE_SYSTEM);
        $this->_timeStart = $this->_microtimeFloat();
        if ($this->_isSingletonScript) {
            $lockDir = Yii::getPathOfAlias('application.commands.lock');
            if (!is_dir($lockDir)) {
                mkdir($lockDir);
            }
            $filePath = $lockDir . '/' . get_class($this) . '.lock';
            $this->_lockFile = fopen($filePath, "w");
            if (!flock($this->_lockFile, LOCK_EX | LOCK_NB)) {
                $this->_verbose("Another instance of this script is running");
                return false;
            }
        }
        return true;
    }



    protected function afterAction($action,$params)
    {
        if ($this->_lockFile) {
            flock($this->_lockFile, LOCK_UN);
        }
        $time = round($this->_microtimeFloat() - $this->_timeStart, 2);
        $this->_verbose("End (time: {$time} seconds)", null, self::VERBOSE_SYSTEM);
    }

    private function _microtimeFloat()
    {
        list($usec, $sec) = explode(" ", microtime());
        return ((float)$usec + (float)$sec);
    }
}