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Mini Shell
<?php
namespace Illuminate\Log;
use Closure;
use Illuminate\Support\Str;
use InvalidArgumentException;
use Monolog\Formatter\LineFormatter;
use Monolog\Handler\ErrorLogHandler;
use Monolog\Handler\FingersCrossedHandler;
use Monolog\Handler\FormattableHandlerInterface;
use Monolog\Handler\HandlerInterface;
use Monolog\Handler\RotatingFileHandler;
use Monolog\Handler\SlackWebhookHandler;
use Monolog\Handler\StreamHandler;
use Monolog\Handler\SyslogHandler;
use Monolog\Handler\WhatFailureGroupHandler;
use Monolog\Logger as Monolog;
use Psr\Log\LoggerInterface;
use Throwable;
class LogManager implements LoggerInterface
{
use ParsesLogConfiguration;
/**
* The application instance.
*
* @var \Illuminate\Contracts\Foundation\Application
*/
protected $app;
/**
* The array of resolved channels.
*
* @var array
*/
protected $channels = [];
/**
* The registered custom driver creators.
*
* @var array
*/
protected $customCreators = [];
/**
* The standard date format to use when writing logs.
*
* @var string
*/
protected $dateFormat = 'Y-m-d H:i:s';
/**
* Create a new Log manager instance.
*
* @param \Illuminate\Contracts\Foundation\Application $app
* @return void
*/
public function __construct($app)
{
$this->app = $app;
}
/**
* Build an on-demand log channel.
*
* @param array $config
* @return \Psr\Log\LoggerInterface
*/
public function build(array $config)
{
unset($this->channels['ondemand']);
return $this->get('ondemand', $config);
}
/**
* Create a new, on-demand aggregate logger instance.
*
* @param array $channels
* @param string|null $channel
* @return \Psr\Log\LoggerInterface
*/
public function stack(array $channels, $channel = null)
{
return new Logger(
$this->createStackDriver(compact('channels', 'channel')),
$this->app['events']
);
}
/**
* Get a log channel instance.
*
* @param string|null $channel
* @return \Psr\Log\LoggerInterface
*/
public function channel($channel = null)
{
return $this->driver($channel);
}
/**
* Get a log driver instance.
*
* @param string|null $driver
* @return \Psr\Log\LoggerInterface
*/
public function driver($driver = null)
{
return $this->get($this->parseDriver($driver));
}
/**
* Attempt to get the log from the local cache.
*
* @param string $name
* @param array|null $config
* @return \Psr\Log\LoggerInterface
*/
protected function get($name, ?array $config = null)
{
try {
return $this->channels[$name] ?? with($this->resolve($name, $config), function ($logger) use ($name) {
return $this->channels[$name] = $this->tap($name, new Logger($logger, $this->app['events']));
});
} catch (Throwable $e) {
return tap($this->createEmergencyLogger(), function ($logger) use ($e) {
$logger->emergency('Unable to create configured logger. Using emergency logger.', [
'exception' => $e,
]);
});
}
}
/**
* Apply the configured taps for the logger.
*
* @param string $name
* @param \Illuminate\Log\Logger $logger
* @return \Illuminate\Log\Logger
*/
protected function tap($name, Logger $logger)
{
foreach ($this->configurationFor($name)['tap'] ?? [] as $tap) {
[$class, $arguments] = $this->parseTap($tap);
$this->app->make($class)->__invoke($logger, ...explode(',', $arguments));
}
return $logger;
}
/**
* Parse the given tap class string into a class name and arguments string.
*
* @param string $tap
* @return array
*/
protected function parseTap($tap)
{
return Str::contains($tap, ':') ? explode(':', $tap, 2) : [$tap, ''];
}
/**
* Create an emergency log handler to avoid white screens of death.
*
* @return \Psr\Log\LoggerInterface
*/
protected function createEmergencyLogger()
{
$config = $this->configurationFor('emergency');
$handler = new StreamHandler(
$config['path'] ?? $this->app->storagePath().'/logs/laravel.log',
$this->level(['level' => 'debug'])
);
return new Logger(
new Monolog('laravel', $this->prepareHandlers([$handler])),
$this->app['events']
);
}
/**
* Resolve the given log instance by name.
*
* @param string $name
* @param array|null $config
* @return \Psr\Log\LoggerInterface
*
* @throws \InvalidArgumentException
*/
protected function resolve($name, ?array $config = null)
{
$config = $config ?? $this->configurationFor($name);
if (is_null($config)) {
throw new InvalidArgumentException("Log [{$name}] is not defined.");
}
if (isset($this->customCreators[$config['driver']])) {
return $this->callCustomCreator($config);
}
$driverMethod = 'create'.ucfirst($config['driver']).'Driver';
if (method_exists($this, $driverMethod)) {
return $this->{$driverMethod}($config);
}
throw new InvalidArgumentException("Driver [{$config['driver']}] is not supported.");
}
/**
* Call a custom driver creator.
*
* @param array $config
* @return mixed
*/
protected function callCustomCreator(array $config)
{
return $this->customCreators[$config['driver']]($this->app, $config);
}
/**
* Create a custom log driver instance.
*
* @param array $config
* @return \Psr\Log\LoggerInterface
*/
protected function createCustomDriver(array $config)
{
$factory = is_callable($via = $config['via']) ? $via : $this->app->make($via);
return $factory($config);
}
/**
* Create an aggregate log driver instance.
*
* @param array $config
* @return \Psr\Log\LoggerInterface
*/
protected function createStackDriver(array $config)
{
if (is_string($config['channels'])) {
$config['channels'] = explode(',', $config['channels']);
}
$handlers = collect($config['channels'])->flatMap(function ($channel) {
return $channel instanceof LoggerInterface
? $channel->getHandlers()
: $this->channel($channel)->getHandlers();
})->all();
$processors = collect($config['channels'])->flatMap(function ($channel) {
return $channel instanceof LoggerInterface
? $channel->getProcessors()
: $this->channel($channel)->getProcessors();
})->all();
if ($config['ignore_exceptions'] ?? false) {
$handlers = [new WhatFailureGroupHandler($handlers)];
}
return new Monolog($this->parseChannel($config), $handlers, $processors);
}
/**
* Create an instance of the single file log driver.
*
* @param array $config
* @return \Psr\Log\LoggerInterface
*/
protected function createSingleDriver(array $config)
{
return new Monolog($this->parseChannel($config), [
$this->prepareHandler(
new StreamHandler(
$config['path'], $this->level($config),
$config['bubble'] ?? true, $config['permission'] ?? null, $config['locking'] ?? false
), $config
),
]);
}
/**
* Create an instance of the daily file log driver.
*
* @param array $config
* @return \Psr\Log\LoggerInterface
*/
protected function createDailyDriver(array $config)
{
return new Monolog($this->parseChannel($config), [
$this->prepareHandler(new RotatingFileHandler(
$config['path'], $config['days'] ?? 7, $this->level($config),
$config['bubble'] ?? true, $config['permission'] ?? null, $config['locking'] ?? false
), $config),
]);
}
/**
* Create an instance of the Slack log driver.
*
* @param array $config
* @return \Psr\Log\LoggerInterface
*/
protected function createSlackDriver(array $config)
{
return new Monolog($this->parseChannel($config), [
$this->prepareHandler(new SlackWebhookHandler(
$config['url'],
$config['channel'] ?? null,
$config['username'] ?? 'Laravel',
$config['attachment'] ?? true,
$config['emoji'] ?? ':boom:',
$config['short'] ?? false,
$config['context'] ?? true,
$this->level($config),
$config['bubble'] ?? true,
$config['exclude_fields'] ?? []
), $config),
]);
}
/**
* Create an instance of the syslog log driver.
*
* @param array $config
* @return \Psr\Log\LoggerInterface
*/
protected function createSyslogDriver(array $config)
{
return new Monolog($this->parseChannel($config), [
$this->prepareHandler(new SyslogHandler(
Str::snake($this->app['config']['app.name'], '-'),
$config['facility'] ?? LOG_USER, $this->level($config)
), $config),
]);
}
/**
* Create an instance of the "error log" log driver.
*
* @param array $config
* @return \Psr\Log\LoggerInterface
*/
protected function createErrorlogDriver(array $config)
{
return new Monolog($this->parseChannel($config), [
$this->prepareHandler(new ErrorLogHandler(
$config['type'] ?? ErrorLogHandler::OPERATING_SYSTEM, $this->level($config)
)),
]);
}
/**
* Create an instance of any handler available in Monolog.
*
* @param array $config
* @return \Psr\Log\LoggerInterface
*
* @throws \InvalidArgumentException
* @throws \Illuminate\Contracts\Container\BindingResolutionException
*/
protected function createMonologDriver(array $config)
{
if (! is_a($config['handler'], HandlerInterface::class, true)) {
throw new InvalidArgumentException(
$config['handler'].' must be an instance of '.HandlerInterface::class
);
}
$with = array_merge(
['level' => $this->level($config)],
$config['with'] ?? [],
$config['handler_with'] ?? []
);
return new Monolog($this->parseChannel($config), [$this->prepareHandler(
$this->app->make($config['handler'], $with), $config
)]);
}
/**
* Prepare the handlers for usage by Monolog.
*
* @param array $handlers
* @return array
*/
protected function prepareHandlers(array $handlers)
{
foreach ($handlers as $key => $handler) {
$handlers[$key] = $this->prepareHandler($handler);
}
return $handlers;
}
/**
* Prepare the handler for usage by Monolog.
*
* @param \Monolog\Handler\HandlerInterface $handler
* @param array $config
* @return \Monolog\Handler\HandlerInterface
*/
protected function prepareHandler(HandlerInterface $handler, array $config = [])
{
if (isset($config['action_level'])) {
$handler = new FingersCrossedHandler($handler, $this->actionLevel($config));
}
if (Monolog::API !== 1 && (Monolog::API !== 2 || ! $handler instanceof FormattableHandlerInterface)) {
return $handler;
}
if (! isset($config['formatter'])) {
$handler->setFormatter($this->formatter());
} elseif ($config['formatter'] !== 'default') {
$handler->setFormatter($this->app->make($config['formatter'], $config['formatter_with'] ?? []));
}
return $handler;
}
/**
* Get a Monolog formatter instance.
*
* @return \Monolog\Formatter\FormatterInterface
*/
protected function formatter()
{
return tap(new LineFormatter(null, $this->dateFormat, true, true), function ($formatter) {
$formatter->includeStacktraces();
});
}
/**
* Get fallback log channel name.
*
* @return string
*/
protected function getFallbackChannelName()
{
return $this->app->bound('env') ? $this->app->environment() : 'production';
}
/**
* Get the log connection configuration.
*
* @param string $name
* @return array
*/
protected function configurationFor($name)
{
return $this->app['config']["logging.channels.{$name}"];
}
/**
* Get the default log driver name.
*
* @return string|null
*/
public function getDefaultDriver()
{
return $this->app['config']['logging.default'];
}
/**
* Set the default log driver name.
*
* @param string $name
* @return void
*/
public function setDefaultDriver($name)
{
$this->app['config']['logging.default'] = $name;
}
/**
* Register a custom driver creator Closure.
*
* @param string $driver
* @param \Closure $callback
* @return $this
*/
public function extend($driver, Closure $callback)
{
$this->customCreators[$driver] = $callback->bindTo($this, $this);
return $this;
}
/**
* Unset the given channel instance.
*
* @param string|null $driver
* @return $this
*/
public function forgetChannel($driver = null)
{
$driver = $this->parseDriver($driver);
if (isset($this->channels[$driver])) {
unset($this->channels[$driver]);
}
}
/**
* Parse the driver name.
*
* @param string|null $driver
* @return string|null
*/
protected function parseDriver($driver)
{
$driver = $driver ?? $this->getDefaultDriver();
if ($this->app->runningUnitTests()) {
$driver = $driver ?? 'null';
}
return $driver;
}
/**
* Get all of the resolved log channels.
*
* @return array
*/
public function getChannels()
{
return $this->channels;
}
/**
* System is unusable.
*
* @param string $message
* @param array $context
* @return void
*/
public function emergency($message, array $context = [])
{
$this->driver()->emergency($message, $context);
}
/**
* Action must be taken immediately.
*
* Example: Entire website down, database unavailable, etc. This should
* trigger the SMS alerts and wake you up.
*
* @param string $message
* @param array $context
* @return void
*/
public function alert($message, array $context = [])
{
$this->driver()->alert($message, $context);
}
/**
* Critical conditions.
*
* Example: Application component unavailable, unexpected exception.
*
* @param string $message
* @param array $context
* @return void
*/
public function critical($message, array $context = [])
{
$this->driver()->critical($message, $context);
}
/**
* Runtime errors that do not require immediate action but should typically
* be logged and monitored.
*
* @param string $message
* @param array $context
* @return void
*/
public function error($message, array $context = [])
{
$this->driver()->error($message, $context);
}
/**
* Exceptional occurrences that are not errors.
*
* Example: Use of deprecated APIs, poor use of an API, undesirable things
* that are not necessarily wrong.
*
* @param string $message
* @param array $context
* @return void
*/
public function warning($message, array $context = [])
{
$this->driver()->warning($message, $context);
}
/**
* Normal but significant events.
*
* @param string $message
* @param array $context
* @return void
*/
public function notice($message, array $context = [])
{
$this->driver()->notice($message, $context);
}
/**
* Interesting events.
*
* Example: User logs in, SQL logs.
*
* @param string $message
* @param array $context
* @return void
*/
public function info($message, array $context = [])
{
$this->driver()->info($message, $context);
}
/**
* Detailed debug information.
*
* @param string $message
* @param array $context
* @return void
*/
public function debug($message, array $context = [])
{
$this->driver()->debug($message, $context);
}
/**
* Logs with an arbitrary level.
*
* @param mixed $level
* @param string $message
* @param array $context
* @return void
*/
public function log($level, $message, array $context = [])
{
$this->driver()->log($level, $message, $context);
}
/**
* Dynamically call the default driver instance.
*
* @param string $method
* @param array $parameters
* @return mixed
*/
public function __call($method, $parameters)
{
return $this->driver()->$method(...$parameters);
}
}
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