If you find yourself needing to write your own log writers and/or filters, you can make
them compatible with Zend_Log::factory() very easily.
At the minimum, you need to implement
Zend_Log_FactoryInterface, which expects a static
factory() method that accepts a single argument,
$config, which may be either an array or
Zend_Config object. If your log writer extends
Zend_Log_Writer_Abstract, or your log filter extends
Zend_Log_Filter_Abstract, you will pick this up for free.
Then, simply define mappings between the accepted configuration and any constructor arguments. As an example:
<?php
class My_Log_Writer_Foo extends Zend_Log_Writer_Abstract
{
public function __construct($bar, $baz)
{
// ...
}
public static function factory($config)
{
if ($config instanceof Zend_Config) {
$config = $config->toArray();
}
if (!is_array($config)) {
throw new Exception(
'factory expects an array or Zend_Config instance'
);
}
$default = array(
'bar' => null,
'baz' => null,
);
$config = array_merge($default, $config);
return new self(
$config['bar'],
$config['baz']
);
}
}
Alternately, you could call appropriate setters after instantiation, but prior to returning the instance:
<?php
class My_Log_Writer_Foo extends Zend_Log_Writer_Abstract
{
public function __construct($bar = null, $baz = null)
{
// ...
}
public function setBar($value)
{
// ...
}
public function setBaz($value)
{
// ...
}
public static function factory($config)
{
if ($config instanceof Zend_Config) {
$config = $config->toArray();
}
if (!is_array($config)) {
throw new Exception(
'factory expects an array or Zend_Config instance'
);
}
$writer = new self();
if (isset($config['bar'])) {
$writer->setBar($config['bar']);
}
if (isset($config['baz'])) {
$writer->setBaz($config['baz']);
}
return $writer;
}
}