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AbstractWriter.php
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AbstractWriter.php
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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Log\Writer;
use Traversable;
use Zend\Log\Exception;
use Zend\Log\Filter;
use Zend\Log\Formatter;
use Zend\Stdlib\ErrorHandler;
abstract class AbstractWriter implements WriterInterface
{
/**
* Filter plugins
*
* @var FilterPluginManager
*/
protected $filterPlugins;
/**
* Formatter plugins
*
* @var FormatterPluginManager
*/
protected $formatterPlugins;
/**
* Filter chain
*
* @var Filter\FilterInterface[]
*/
protected $filters = array();
/**
* Formats the log message before writing
*
* @var Formatter\FormatterInterface
*/
protected $formatter;
/**
* Use Zend\Stdlib\ErrorHandler to report errors during calls to write
*
* @var bool
*/
protected $convertWriteErrorsToExceptions = true;
/**
* Error level passed to Zend\Stdlib\ErrorHandler::start for errors reported during calls to write
*
* @var bool
*/
protected $errorsToExceptionsConversionLevel = E_WARNING;
/**
* Constructor
*
* Set options for an writer. Accepted options are:
* - filters: array of filters to add to this filter
* - formatter: formatter for this writer
*
* @param array|Traversable $options
* @return Logger
* @throws Exception\InvalidArgumentException
*/
public function __construct($options = null)
{
if ($options instanceof Traversable) {
$options = iterator_to_array($options);
}
if (is_array($options)) {
if (isset($options['filters'])) {
$filters = $options['filters'];
if (is_string($filters) || $filters instanceof Filter\FilterInterface) {
$this->addFilter($filters);
} elseif (is_array($filters)) {
foreach ($filters as $filter) {
if (is_string($filter) || $filter instanceof Filter\FilterInterface) {
$this->addFilter($filter);
} elseif (is_array($filter)) {
if (!isset($filter['name'])) {
throw new Exception\InvalidArgumentException('Options must contain a name for the filter');
}
$filterOptions = (isset($filter['options'])) ? $filter['options'] : null;
$this->addFilter($filter['name'], $filterOptions);
}
}
}
}
if (isset($options['formatter'])) {
$formatter = $options['formatter'];
if (is_string($formatter) || $formatter instanceof Formatter\FormatterInterface) {
$this->setFormatter($formatter);
} else if(is_array($formatter)) {
if (!isset($formatter['name'])) {
throw new Exception\InvalidArgumentException('Options must contain a name for the formatter');
}
$formatterOptions = (isset($formatter['options'])) ? $formatter['options'] : null;
$this->setFormatter($formatter['name'], $formatterOptions);
}
}
}
}
/**
* Add a filter specific to this writer.
*
* @param int|string|Filter\FilterInterface $filter
* @param array|null $options
* @return AbstractWriter
* @throws Exception\InvalidArgumentException
*/
public function addFilter($filter, array $options = null)
{
if (is_int($filter)) {
$filter = new Filter\Priority($filter);
}
if (is_string($filter)) {
$filter = $this->filterPlugin($filter, $options);
}
if (!$filter instanceof Filter\FilterInterface) {
throw new Exception\InvalidArgumentException(sprintf(
'Writer must implement %s\Filter\FilterInterface; received "%s"',
__NAMESPACE__,
is_object($filter) ? get_class($filter) : gettype($filter)
));
}
$this->filters[] = $filter;
return $this;
}
/**
* Get filter plugin manager
*
* @return FilterPluginManager
*/
public function getFilterPluginManager()
{
if (null === $this->filterPlugins) {
$this->setFilterPluginManager(new FilterPluginManager());
}
return $this->filterPlugins;
}
/**
* Set filter plugin manager
*
* @param string|FilterPluginManager $plugins
* @return self
* @throws Exception\InvalidArgumentException
*/
public function setFilterPluginManager($plugins)
{
if (is_string($plugins)) {
$plugins = new $plugins;
}
if (!$plugins instanceof FilterPluginManager) {
throw new Exception\InvalidArgumentException(sprintf(
'Writer plugin manager must extend %s\FilterPluginManager; received %s',
__NAMESPACE__,
is_object($plugins) ? get_class($plugins) : gettype($plugins)
));
}
$this->filterPlugins = $plugins;
return $this;
}
/**
* Get filter instance
*
* @param string $name
* @param array|null $options
* @return Filter\FilterInterface
*/
public function filterPlugin($name, array $options = null)
{
return $this->getFilterPluginManager()->get($name, $options);
}
/**
* Get formatter plugin manager
*
* @return FormatterPluginManager
*/
public function getFormatterPluginManager()
{
if (null === $this->formatterPlugins) {
$this->setFormatterPluginManager(new FormatterPluginManager());
}
return $this->formatterPlugins;
}
/**
* Set formatter plugin manager
*
* @param string|FormatterPluginManager $plugins
* @return self
* @throws Exception\InvalidArgumentException
*/
public function setFormatterPluginManager($plugins)
{
if (is_string($plugins)) {
$plugins = new $plugins;
}
if (!$plugins instanceof FormatterPluginManager) {
throw new Exception\InvalidArgumentException(sprintf(
'Writer plugin manager must extend %s\FormatterPluginManager; received %s',
__NAMESPACE__,
is_object($plugins) ? get_class($plugins) : gettype($plugins)
));
}
$this->formatterPlugins = $plugins;
return $this;
}
/**
* Get formatter instance
*
* @param string $name
* @param array|null $options
* @return Formatter\FormatterInterface
*/
public function formatterPlugin($name, array $options = null)
{
return $this->getFormatterPluginManager()->get($name, $options);
}
/**
* Log a message to this writer.
*
* @param array $event log data event
* @return void
*/
public function write(array $event)
{
foreach ($this->filters as $filter) {
if (!$filter->filter($event)) {
return;
}
}
$errorHandlerStarted = false;
if ($this->convertWriteErrorsToExceptions && !ErrorHandler::started()) {
ErrorHandler::start($this->errorsToExceptionsConversionLevel);
$errorHandlerStarted = true;
}
try {
$this->doWrite($event);
} catch (\Exception $e) {
if ($errorHandlerStarted) {
ErrorHandler::stop();
$errorHandlerStarted = false;
}
throw $e;
}
if ($errorHandlerStarted) {
$error = ErrorHandler::stop();
$errorHandlerStarted = false;
if ($error) {
throw new Exception\RuntimeException("Unable to write", 0, $error);
}
}
}
/**
* Set a new formatter for this writer
*
* @param string|Formatter\FormatterInterface $formatter
* @param array|null $options
* @return self
* @throws Exception\InvalidArgumentException
*/
public function setFormatter($formatter, array $options = null)
{
if (is_string($formatter)) {
$formatter = $this->formatterPlugin($formatter, $options);
}
if (!$formatter instanceof Formatter\FormatterInterface) {
throw new Exception\InvalidArgumentException(sprintf(
'Formatter must implement %s\Formatter\FormatterInterface; received "%s"',
__NAMESPACE__,
is_object($formatter) ? get_class($formatter) : gettype($formatter)
));
}
$this->formatter = $formatter;
return $this;
}
/**
* Set convert write errors to exception flag
*
* @param bool $convertErrors
*/
public function setConvertWriteErrorsToExceptions($convertErrors)
{
$this->convertWriteErrorsToExceptions = $convertErrors;
}
/**
* Perform shutdown activities such as closing open resources
*
* @return void
*/
public function shutdown()
{}
/**
* Write a message to the log
*
* @param array $event log data event
* @return void
*/
abstract protected function doWrite(array $event);
}