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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of PhuninNode. |
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* |
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** (c) 2013 - 2016 Cees-Jan Kiewiet |
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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 WyriHaximus\PhuninNode; |
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use \React\EventLoop\Timer\TimerInterface; |
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use React\EventLoop\LoopInterface; |
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use React\Stream\DuplexStreamInterface; |
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/** |
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* Class ConnectionContext |
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* @package WyriHaximus\PhuninNode |
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*/ |
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class ConnectionContext |
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{ |
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/** |
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* The greeting munin expects |
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*/ |
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const GREETING = '# munin node at %s'; |
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/** |
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* The timeout after which we disconnection for no data transmission |
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*/ |
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const CONNECTION_TIMEOUT = 60; |
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/** |
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* New line |
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*/ |
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const NEW_LINE = "\n"; |
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/** |
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* @var DuplexStreamInterface |
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*/ |
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private $conn; |
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/** |
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* @var Node |
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*/ |
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private $node; |
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/** |
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* @var TimerInterface |
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*/ |
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private $timeoutTimer; |
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/** |
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* @var LoopInterface |
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*/ |
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private $loop; |
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/** |
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* @param DuplexStreamInterface $conn |
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* @param Node $node |
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*/ |
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public function __construct(DuplexStreamInterface $conn, Node $node) |
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{ |
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$this->conn = $conn; |
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$this->node = $node; |
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$this->loop = $node->getLoop(); |
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$this->conn->on('data', [$this, 'onData']); |
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$this->conn->on('close', [$this, 'onClose']); |
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$this->write( |
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sprintf( |
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self::GREETING, |
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$node->getConfiguration() |
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->getPair('hostname') |
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->getValue() |
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) |
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); |
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} |
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/** |
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* Write data to the connection |
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* |
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* @param string $data |
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*/ |
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protected function write(string $data) |
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{ |
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$this->clearTimeout(); |
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$this->conn->write($data . static::NEW_LINE); |
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$this->log('<-' . $data); |
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$this->setTimeout(); |
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} |
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/** |
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* Clear the timeout, close the connection, and tell node the client disconnected |
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*/ |
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protected function close() |
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{ |
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$this->clearTimeout(); |
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$this->node->onClose($this); |
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} |
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/** |
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* Set a timeout that disconnects the client when it's idle for to long |
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*/ |
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protected function setTimeout() |
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{ |
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$this->timeoutTimer = $this->loop->addTimer( |
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self::CONNECTION_TIMEOUT, |
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function () { |
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$this->close(); |
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} |
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); |
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} |
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/** |
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* Clear the timeout if it's set |
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*/ |
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protected function clearTimeout() |
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{ |
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if ($this->timeoutTimer !== null) { |
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$this->loop->cancelTimer($this->timeoutTimer); |
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$this->timeoutTimer = null; |
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} |
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} |
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/** |
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* Handle a command call from the clients side |
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* |
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* @param string $data |
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*/ |
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public function onData(string $data) |
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{ |
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$data = trim($data); |
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$this->log('->' . $data); |
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$chunks = explode(' ', $data); |
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1 |
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$command = $chunks[0]; |
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1 |
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unset($chunks[0]); |
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1 |
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$input = ''; |
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1 |
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if (count($chunks) > 0) { |
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$input = implode(' ', $chunks); |
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} |
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$input = trim($input); |
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1 |
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if ($this->node->getCommands()->has($command)) { |
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$this |
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->node |
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->getCommands() |
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->get($command) |
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->handle($this, $input) |
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->then(function (array $lines) { |
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foreach ($lines as $line) { |
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$this->write($line); |
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} |
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}); |
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return; |
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} |
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$list = implode(', ', $this->node->getCommands()->keys()); |
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$this->write( |
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'# Unknown command. Try ' . substr_replace($list, ' or ', strrpos($list, ', '), 2) |
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); |
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} |
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/** |
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* Close connection |
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*/ |
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1 |
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public function quit() |
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{ |
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1 |
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$this->conn->close(); |
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$this->close(); |
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} |
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/** |
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* Close connection |
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*/ |
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public function onClose() |
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{ |
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$this->close(); |
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} |
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/** |
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* @param string $message |
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*/ |
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protected function log(string $message) |
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{ |
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$this->node->getLogger()->debug('[' . spl_object_hash($this->conn) . ']' . $message); |
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} |
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} |
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WyriHaximus /
PhuninNode
