275 lines
8.2 KiB
PHP
275 lines
8.2 KiB
PHP
<?php declare(strict_types=1);
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/*
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* This file is part of the Monolog package.
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*
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* (c) Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Monolog\Handler;
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use RuntimeException;
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use Monolog\Logger;
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use Monolog\Utils;
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/**
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* Handler send logs to Telegram using Telegram Bot API.
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*
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* How to use:
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* 1) Create telegram bot with https://telegram.me/BotFather
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* 2) Create a telegram channel where logs will be recorded.
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* 3) Add created bot from step 1 to the created channel from step 2.
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*
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* Use telegram bot API key from step 1 and channel name with '@' prefix from step 2 to create instance of TelegramBotHandler
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*
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* @link https://core.telegram.org/bots/api
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*
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* @author Mazur Alexandr <alexandrmazur96@gmail.com>
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*
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* @phpstan-import-type Record from \Monolog\Logger
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*/
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class TelegramBotHandler extends AbstractProcessingHandler
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{
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private const BOT_API = 'https://api.telegram.org/bot';
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/**
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* The available values of parseMode according to the Telegram api documentation
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*/
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private const AVAILABLE_PARSE_MODES = [
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'HTML',
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'MarkdownV2',
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'Markdown', // legacy mode without underline and strikethrough, use MarkdownV2 instead
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];
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/**
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* The maximum number of characters allowed in a message according to the Telegram api documentation
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*/
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private const MAX_MESSAGE_LENGTH = 4096;
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/**
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* Telegram bot access token provided by BotFather.
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* Create telegram bot with https://telegram.me/BotFather and use access token from it.
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* @var string
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*/
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private $apiKey;
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/**
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* Telegram channel name.
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* Since to start with '@' symbol as prefix.
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* @var string
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*/
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private $channel;
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/**
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* The kind of formatting that is used for the message.
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* See available options at https://core.telegram.org/bots/api#formatting-options
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* or in AVAILABLE_PARSE_MODES
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* @var ?string
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*/
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private $parseMode;
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/**
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* Disables link previews for links in the message.
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* @var ?bool
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*/
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private $disableWebPagePreview;
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/**
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* Sends the message silently. Users will receive a notification with no sound.
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* @var ?bool
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*/
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private $disableNotification;
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/**
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* True - split a message longer than MAX_MESSAGE_LENGTH into parts and send in multiple messages.
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* False - truncates a message that is too long.
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* @var bool
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*/
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private $splitLongMessages;
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/**
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* Adds 1-second delay between sending a split message (according to Telegram API to avoid 429 Too Many Requests).
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* @var bool
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*/
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private $delayBetweenMessages;
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/**
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* @param string $apiKey Telegram bot access token provided by BotFather
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* @param string $channel Telegram channel name
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* @param bool $splitLongMessages Split a message longer than MAX_MESSAGE_LENGTH into parts and send in multiple messages
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* @param bool $delayBetweenMessages Adds delay between sending a split message according to Telegram API
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* @throws MissingExtensionException
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*/
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public function __construct(
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string $apiKey,
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string $channel,
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$level = Logger::DEBUG,
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bool $bubble = true,
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string $parseMode = null,
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bool $disableWebPagePreview = null,
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bool $disableNotification = null,
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bool $splitLongMessages = false,
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bool $delayBetweenMessages = false
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)
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{
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if (!extension_loaded('curl')) {
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throw new MissingExtensionException('The curl extension is needed to use the TelegramBotHandler');
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}
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parent::__construct($level, $bubble);
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$this->apiKey = $apiKey;
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$this->channel = $channel;
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$this->setParseMode($parseMode);
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$this->disableWebPagePreview($disableWebPagePreview);
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$this->disableNotification($disableNotification);
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$this->splitLongMessages($splitLongMessages);
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$this->delayBetweenMessages($delayBetweenMessages);
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}
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public function setParseMode(string $parseMode = null): self
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{
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if ($parseMode !== null && !in_array($parseMode, self::AVAILABLE_PARSE_MODES)) {
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throw new \InvalidArgumentException('Unknown parseMode, use one of these: ' . implode(', ', self::AVAILABLE_PARSE_MODES) . '.');
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}
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$this->parseMode = $parseMode;
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return $this;
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}
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public function disableWebPagePreview(bool $disableWebPagePreview = null): self
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{
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$this->disableWebPagePreview = $disableWebPagePreview;
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return $this;
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}
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public function disableNotification(bool $disableNotification = null): self
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{
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$this->disableNotification = $disableNotification;
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return $this;
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}
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/**
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* True - split a message longer than MAX_MESSAGE_LENGTH into parts and send in multiple messages.
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* False - truncates a message that is too long.
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* @param bool $splitLongMessages
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* @return $this
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*/
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public function splitLongMessages(bool $splitLongMessages = false): self
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{
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$this->splitLongMessages = $splitLongMessages;
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return $this;
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}
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/**
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* Adds 1-second delay between sending a split message (according to Telegram API to avoid 429 Too Many Requests).
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* @param bool $delayBetweenMessages
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* @return $this
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*/
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public function delayBetweenMessages(bool $delayBetweenMessages = false): self
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{
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$this->delayBetweenMessages = $delayBetweenMessages;
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return $this;
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}
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/**
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* {@inheritDoc}
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*/
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public function handleBatch(array $records): void
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{
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/** @var Record[] $messages */
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$messages = [];
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foreach ($records as $record) {
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if (!$this->isHandling($record)) {
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continue;
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}
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if ($this->processors) {
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/** @var Record $record */
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$record = $this->processRecord($record);
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}
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$messages[] = $record;
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}
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if (!empty($messages)) {
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$this->send((string)$this->getFormatter()->formatBatch($messages));
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}
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}
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/**
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* @inheritDoc
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*/
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protected function write(array $record): void
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{
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$this->send($record['formatted']);
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}
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/**
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* Send request to @link https://api.telegram.org/bot on SendMessage action.
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* @param string $message
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*/
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protected function send(string $message): void
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{
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$messages = $this->handleMessageLength($message);
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foreach ($messages as $key => $msg) {
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if ($this->delayBetweenMessages && $key > 0) {
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sleep(1);
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}
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$this->sendCurl($msg);
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}
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}
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protected function sendCurl(string $message): void
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{
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$ch = curl_init();
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$url = self::BOT_API . $this->apiKey . '/SendMessage';
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curl_setopt($ch, CURLOPT_URL, $url);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
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curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query([
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'text' => $message,
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'chat_id' => $this->channel,
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'parse_mode' => $this->parseMode,
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'disable_web_page_preview' => $this->disableWebPagePreview,
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'disable_notification' => $this->disableNotification,
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]));
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$result = Curl\Util::execute($ch);
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if (!is_string($result)) {
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throw new RuntimeException('Telegram API error. Description: No response');
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}
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$result = json_decode($result, true);
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if ($result['ok'] === false) {
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throw new RuntimeException('Telegram API error. Description: ' . $result['description']);
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}
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}
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/**
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* Handle a message that is too long: truncates or splits into several
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* @param string $message
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* @return string[]
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*/
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private function handleMessageLength(string $message): array
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{
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$truncatedMarker = ' (...truncated)';
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if (!$this->splitLongMessages && strlen($message) > self::MAX_MESSAGE_LENGTH) {
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return [Utils::substr($message, 0, self::MAX_MESSAGE_LENGTH - strlen($truncatedMarker)) . $truncatedMarker];
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}
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return str_split($message, self::MAX_MESSAGE_LENGTH);
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}
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}
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