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<?php

/*
 * This file is part of the Monolog package.
 *
 * (c) Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Monolog\Handler;

use Monolog\Logger;
use Monolog\Formatter\LogglyFormatter;

/**
 * Sends errors to Loggly.
 *
 * @author Przemek Sobstel <przemek@sobstel.org>
 * @author Adam Pancutt <adam@pancutt.com>
 */
class LogglyHandler extends AbstractProcessingHandler
{
    const HOST = 'logs-01.loggly.com';
    const ENDPOINT_SINGLE = 'inputs';
    const ENDPOINT_BATCH = 'bulk';

protected $token;

protected $tag;

public function __construct($token, $level = Logger::DEBUG, $bubble = true)
    {
        if (!extension_loaded('curl')) {
            throw new \LogicException('The curl extension is needed to use the LogglyHandler');
        }

$this->token = $token;

parent::__construct($level, $bubble);
    }

public function setTag($tag)
    {
        $this->tag = $tag;
    }

public function addTag($tag)
    {
        $this->tag = (strlen($this->tag) > 0) ? $this->tag .','. $tag : $tag;
    }

protected function write(array $record)
    {
        $this->send($record["formatted"], self::ENDPOINT_SINGLE);
    }

public function handleBatch(array $records)
    {
        $level = $this->level;

$records = array_filter($records, function ($record) use ($level) {
            return ($record['level'] >= $level);
        });

if ($records) {
            $this->send($this->getFormatter()->formatBatch($records), self::ENDPOINT_BATCH);
        }
    }

protected function send($data, $endpoint)
    {
        $url = sprintf("https://%s/%s/%s/", self::HOST, $endpoint, $this->token);

$headers = array('Content-Type: application/json');

if ($this->tag) {
            $headers[] = "X-LOGGLY-TAG: {$this->tag}";
        }

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

curl_exec($ch);
        curl_close($ch);
    }

protected function getDefaultFormatter()
    {
        return new LogglyFormatter();
    }
}