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<?php declare(strict_types=1);
/*
* 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\Formatter\FormatterInterface;
use Monolog\Logger;
use Monolog\Utils;
use Monolog\Handler\Slack\SlackRecord;
/**
* Sends notifications through Slack API
*
* @author Greg Kedzierski <greg@gregkedzierski.com>
* @see https://api.slack.com/
*
* @phpstan-import-type FormattedRecord from AbstractProcessingHandler
*/
class SlackHandler extends SocketHandler
{
/**
* Slack API token
* @var string
*/
private $token;
/**
* Instance of the SlackRecord util class preparing data for Slack API.
* @var SlackRecord
*/
private $slackRecord;
/**
* @param string $token Slack API token
* @param string $channel Slack channel (encoded ID or name)
* @param string|null $username Name of a bot
* @param bool $useAttachment Whether the message should be added to Slack as attachment (plain text otherwise)
* @param string|null $iconEmoji The emoji name to use (or null)
* @param bool $useShortAttachment Whether the context/extra messages added to Slack as attachments are in a short style
* @param bool $includeContextAndExtra Whether the attachment should include context and extra data
* @param string[] $excludeFields Dot separated list of fields to exclude from slack message. E.g. ['context.field1', 'extra.field2']
* @throws MissingExtensionException If no OpenSSL PHP extension configured
*/
public function __construct(
string $token,
string $channel,
?string $username = null,
bool $useAttachment = true,
?string $iconEmoji = null,
$level = Logger::CRITICAL,
bool $bubble = true,
bool $useShortAttachment = false,
bool $includeContextAndExtra = false,
array $excludeFields = array(),
bool $persistent = false,
float $timeout = 0.0,
float $writingTimeout = 10.0,
?float $connectionTimeout = null,
?int $chunkSize = null
) {
if (!extension_loaded('openssl')) {
throw new MissingExtensionException('The OpenSSL PHP extension is required to use the SlackHandler');
}
parent::__construct(
'ssl://slack.com:443',
$level,
$bubble,
$persistent,
$timeout,
$writingTimeout,
$connectionTimeout,
$chunkSize
);
$this->slackRecord = new SlackRecord(
$channel,
$username,
$useAttachment,
$iconEmoji,
$useShortAttachment,
$includeContextAndExtra,
$excludeFields
);
$this->token = $token;
}
public function getSlackRecord(): SlackRecord
{
return $this->slackRecord;
}
public function getToken(): string
{
return $this->token;
}
/**
* {@inheritDoc}
*/
protected function generateDataStream(array $record): string
{
$content = $this->buildContent($record);
return $this->buildHeader($content) . $content;
}
/**
* Builds the body of API call
*
* @phpstan-param FormattedRecord $record
*/
private function buildContent(array $record): string
{
$dataArray = $this->prepareContentData($record);
return http_build_query($dataArray);
}
/**
* @phpstan-param FormattedRecord $record
* @return string[]
*/
protected function prepareContentData(array $record): array
{
$dataArray = $this->slackRecord->getSlackData($record);
$dataArray['token'] = $this->token;
if (!empty($dataArray['attachments'])) {
$dataArray['attachments'] = Utils::jsonEncode($dataArray['attachments']);
}
return $dataArray;
}
/**
* Builds the header of the API Call
*/
private function buildHeader(string $content): string
{
$header = "POST /api/chat.postMessage HTTP/1.1\r\n";
$header .= "Host: slack.com\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($content) . "\r\n";
$header .= "\r\n";
return $header;
}
/**
* {@inheritDoc}
*/
protected function write(array $record): void
{
parent::write($record);
$this->finalizeWrite();
}
/**
* Finalizes the request by reading some bytes and then closing the socket
*
* If we do not read some but close the socket too early, slack sometimes
* drops the request entirely.
*/
protected function finalizeWrite(): void
{
$res = $this->getResource();
if (is_resource($res)) {
@fread($res, 2048);
}
$this->closeSocket();
}
public function setFormatter(FormatterInterface $formatter): HandlerInterface
{
parent::setFormatter($formatter);
$this->slackRecord->setFormatter($formatter);
return $this;
}
public function getFormatter(): FormatterInterface
{
$formatter = parent::getFormatter();
$this->slackRecord->setFormatter($formatter);
return $formatter;
}
/**
* Channel used by the bot when posting
*/
public function setChannel(string $channel): self
{
$this->slackRecord->setChannel($channel);
return $this;
}
/**
* Username used by the bot when posting
*/
public function setUsername(string $username): self
{
$this->slackRecord->setUsername($username);
return $this;
}
public function useAttachment(bool $useAttachment): self
{
$this->slackRecord->useAttachment($useAttachment);
return $this;
}
public function setIconEmoji(string $iconEmoji): self
{
$this->slackRecord->setUserIcon($iconEmoji);
return $this;
}
public function useShortAttachment(bool $useShortAttachment): self
{
$this->slackRecord->useShortAttachment($useShortAttachment);
return $this;
}
public function includeContextAndExtra(bool $includeContextAndExtra): self
{
$this->slackRecord->includeContextAndExtra($includeContextAndExtra);
return $this;
}
/**
* @param string[] $excludeFields
*/
public function excludeFields(array $excludeFields): self
{
$this->slackRecord->excludeFields($excludeFields);
return $this;
}
}
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