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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\Slack;
use Monolog\Logger;
use Monolog\Utils;
use Monolog\Formatter\NormalizerFormatter;
use Monolog\Formatter\FormatterInterface;
/**
* Slack record utility helping to log to Slack webhooks or API.
*
* @author Greg Kedzierski <greg@gregkedzierski.com>
* @author Haralan Dobrev <hkdobrev@gmail.com>
* @see https://api.slack.com/incoming-webhooks
* @see https://api.slack.com/docs/message-attachments
*
* @phpstan-import-type FormattedRecord from \Monolog\Handler\AbstractProcessingHandler
* @phpstan-import-type Record from \Monolog\Logger
*/
class SlackRecord
{
public const COLOR_DANGER = 'danger';
public const COLOR_WARNING = 'warning';
public const COLOR_GOOD = 'good';
public const COLOR_DEFAULT = '#e3e4e6';
/**
* Slack channel (encoded ID or name)
* @var string|null
*/
private $channel;
/**
* Name of a bot
* @var string|null
*/
private $username;
/**
* User icon e.g. 'ghost', 'http://example.com/user.png'
* @var string|null
*/
private $userIcon;
/**
* Whether the message should be added to Slack as attachment (plain text otherwise)
* @var bool
*/
private $useAttachment;
/**
* Whether the the context/extra messages added to Slack as attachments are in a short style
* @var bool
*/
private $useShortAttachment;
/**
* Whether the attachment should include context and extra data
* @var bool
*/
private $includeContextAndExtra;
/**
* Dot separated list of fields to exclude from slack message. E.g. ['context.field1', 'extra.field2']
* @var string[]
*/
private $excludeFields;
/**
* @var ?FormatterInterface
*/
private $formatter;
/**
* @var NormalizerFormatter
*/
private $normalizerFormatter;
/**
* @param string[] $excludeFields
*/
public function __construct(
?string $channel = null,
?string $username = null,
bool $useAttachment = true,
?string $userIcon = null,
bool $useShortAttachment = false,
bool $includeContextAndExtra = false,
array $excludeFields = array(),
FormatterInterface $formatter = null
) {
$this
->setChannel($channel)
->setUsername($username)
->useAttachment($useAttachment)
->setUserIcon($userIcon)
->useShortAttachment($useShortAttachment)
->includeContextAndExtra($includeContextAndExtra)
->excludeFields($excludeFields)
->setFormatter($formatter);
if ($this->includeContextAndExtra) {
$this->normalizerFormatter = new NormalizerFormatter();
}
}
/**
* Returns required data in format that Slack
* is expecting.
*
* @phpstan-param FormattedRecord $record
* @phpstan-return mixed[]
*/
public function getSlackData(array $record): array
{
$dataArray = array();
$record = $this->removeExcludedFields($record);
if ($this->username) {
$dataArray['username'] = $this->username;
}
if ($this->channel) {
$dataArray['channel'] = $this->channel;
}
if ($this->formatter && !$this->useAttachment) {
/** @phpstan-ignore-next-line */
$message = $this->formatter->format($record);
} else {
$message = $record['message'];
}
if ($this->useAttachment) {
$attachment = array(
'fallback' => $message,
'text' => $message,
'color' => $this->getAttachmentColor($record['level']),
'fields' => array(),
'mrkdwn_in' => array('fields'),
'ts' => $record['datetime']->getTimestamp(),
'footer' => $this->username,
'footer_icon' => $this->userIcon,
);
if ($this->useShortAttachment) {
$attachment['title'] = $record['level_name'];
} else {
$attachment['title'] = 'Message';
$attachment['fields'][] = $this->generateAttachmentField('Level', $record['level_name']);
}
if ($this->includeContextAndExtra) {
foreach (array('extra', 'context') as $key) {
if (empty($record[$key])) {
continue;
}
if ($this->useShortAttachment) {
$attachment['fields'][] = $this->generateAttachmentField(
(string) $key,
$record[$key]
);
} else {
// Add all extra fields as individual fields in attachment
$attachment['fields'] = array_merge(
$attachment['fields'],
$this->generateAttachmentFields($record[$key])
);
}
}
}
$dataArray['attachments'] = array($attachment);
} else {
$dataArray['text'] = $message;
}
if ($this->userIcon) {
if (filter_var($this->userIcon, FILTER_VALIDATE_URL)) {
$dataArray['icon_url'] = $this->userIcon;
} else {
$dataArray['icon_emoji'] = ":{$this->userIcon}:";
}
}
return $dataArray;
}
/**
* Returns a Slack message attachment color associated with
* provided level.
*/
public function getAttachmentColor(int $level): string
{
switch (true) {
case $level >= Logger::ERROR:
return static::COLOR_DANGER;
case $level >= Logger::WARNING:
return static::COLOR_WARNING;
case $level >= Logger::INFO:
return static::COLOR_GOOD;
default:
return static::COLOR_DEFAULT;
}
}
/**
* Stringifies an array of key/value pairs to be used in attachment fields
*
* @param mixed[] $fields
*/
public function stringify(array $fields): string
{
/** @var Record $fields */
$normalized = $this->normalizerFormatter->format($fields);
$hasSecondDimension = count(array_filter($normalized, 'is_array'));
$hasNonNumericKeys = !count(array_filter(array_keys($normalized), 'is_numeric'));
return $hasSecondDimension || $hasNonNumericKeys
? Utils::jsonEncode($normalized, JSON_PRETTY_PRINT|Utils::DEFAULT_JSON_FLAGS)
: Utils::jsonEncode($normalized, Utils::DEFAULT_JSON_FLAGS);
}
/**
* Channel used by the bot when posting
*
* @param ?string $channel
*
* @return static
*/
public function setChannel(?string $channel = null): self
{
$this->channel = $channel;
return $this;
}
/**
* Username used by the bot when posting
*
* @param ?string $username
*
* @return static
*/
public function setUsername(?string $username = null): self
{
$this->username = $username;
return $this;
}
public function useAttachment(bool $useAttachment = true): self
{
$this->useAttachment = $useAttachment;
return $this;
}
public function setUserIcon(?string $userIcon = null): self
{
$this->userIcon = $userIcon;
if (\is_string($userIcon)) {
$this->userIcon = trim($userIcon, ':');
}
return $this;
}
public function useShortAttachment(bool $useShortAttachment = false): self
{
$this->useShortAttachment = $useShortAttachment;
return $this;
}
public function includeContextAndExtra(bool $includeContextAndExtra = false): self
{
$this->includeContextAndExtra = $includeContextAndExtra;
if ($this->includeContextAndExtra) {
$this->normalizerFormatter = new NormalizerFormatter();
}
return $this;
}
/**
* @param string[] $excludeFields
*/
public function excludeFields(array $excludeFields = []): self
{
$this->excludeFields = $excludeFields;
return $this;
}
public function setFormatter(?FormatterInterface $formatter = null): self
{
$this->formatter = $formatter;
return $this;
}
/**
* Generates attachment field
*
* @param string|mixed[] $value
*
* @return array{title: string, value: string, short: false}
*/
private function generateAttachmentField(string $title, $value): array
{
$value = is_array($value)
? sprintf('```%s```', substr($this->stringify($value), 0, 1990))
: $value;
return array(
'title' => ucfirst($title),
'value' => $value,
'short' => false,
);
}
/**
* Generates a collection of attachment fields from array
*
* @param mixed[] $data
*
* @return array<array{title: string, value: string, short: false}>
*/
private function generateAttachmentFields(array $data): array
{
/** @var Record $data */
$normalized = $this->normalizerFormatter->format($data);
$fields = array();
foreach ($normalized as $key => $value) {
$fields[] = $this->generateAttachmentField((string) $key, $value);
}
return $fields;
}
/**
* Get a copy of record with fields excluded according to $this->excludeFields
*
* @phpstan-param FormattedRecord $record
*
* @return mixed[]
*/
private function removeExcludedFields(array $record): array
{
foreach ($this->excludeFields as $field) {
$keys = explode('.', $field);
$node = &$record;
$lastKey = end($keys);
foreach ($keys as $key) {
if (!isset($node[$key])) {
break;
}
if ($lastKey === $key) {
unset($node[$key]);
break;
}
$node = &$node[$key];
}
}
return $record;
}
}
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