ProtocolHandler::handleError() - Code Metrics - larsroettig/stomp - Measure and Improve Code Quality continuously with Scrutinizer

ProtocolHandler::handleError() A
last analyzed 2016-02-24 17:11 UTC

↳ Parent: ProtocolHandler

Complexity

Conditions	2
Paths	2

Size

Total Lines	13
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	13
rs	9.4285
cc	2
eloc	5
nc	2
nop	2

<?php

/**
 * \AppserverIo\Stomp\ProtocolHandler
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is available through the world-wide-web at this URL:
 * http://opensource.org/licenses/osl-3.0.php
 *
 * PHP version 5
 *
 * @author    Lars Roettig <[email protected]>
 * @copyright 2016 TechDivision GmbH - <[email protected]>
 * @license   http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
 * @link      http://www.appserver.io/
 */


namespace AppserverIo\Stomp;

use AppserverIo\Messaging\MessageQueue;
use AppserverIo\Messaging\QueueConnectionFactory;
use AppserverIo\Messaging\StringMessage;
use AppserverIo\Stomp\Interfaces\AuthenticatorInterface;
use AppserverIo\Stomp\Authenticator\SimpleAuthenticator;
use AppserverIo\Stomp\Exception\ProtocolException;
use AppserverIo\Stomp\Interfaces\ProtocolHandlerInterface;
use AppserverIo\Stomp\Protocol\ClientCommands;
use AppserverIo\Stomp\Protocol\CommonValues;
use AppserverIo\Stomp\Protocol\Headers;
use AppserverIo\Stomp\Protocol\ServerCommands;
use AppserverIo\Stomp\Utils\ErrorMessages;

/**
 * Implementation to handle stomp request.
 *
 * @author    Lars Roettig <[email protected]>
 * @copyright 2016 TechDivision GmbH - <[email protected]>
 * @license   http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
 * @link      http://www.appserver.io/
 * @link      https://github.com/stomp/stomp-spec/blob/master/src/stomp-specification-1.1.md
 */
class ProtocolHandler implements ProtocolHandlerInterface
{

    /**
     * Holds the Separator for protocol versions.
     *
     * @var string
     */
    const SEPARATOR = ",";

    /**
     * The supported protocol versions.
     *
     * @var array
     */
    protected $supportedProtocolVersions;

    /**
     * Holds the stomp authenticator.
     *
     * @var \AppserverIo\Stomp\Interfaces\AuthenticatorInterface
     */
    protected $authenticator;

    /**
     * Holds the response as stomp frame.
     *
     * @var \AppserverIo\Stomp\Frame
     */
    protected $response;

    /**
     * Holds the state to close parent connection.
     *
     * @var bool
     */
    protected $mustConnectionClose;

    /**
     * Holds the queue session.
     *
     * @var \AppserverIo\Messaging\QueueSession
     */
    protected $session;

    /**
     * Init new stomp protocol handler.
     */
    public function __construct()
    {
        // set the supported protocol versions to 1.0,1.1,1.2
        $this->injectSupportedProtocolVersions(array(
            CommonValues::V1_0 => "",
            CommonValues::V1_1 => "",
            CommonValues::V1_2 => ""
        ));
        $this->init();
    }

    /**
     * Init the StompProtocolHandler
     *
     * @return void
     */
    public function init()
    {
        $this->injectAuthenticator(new SimpleAuthenticator());
        $this->mustConnectionClose = false;
    }

    /**
     * Injects the supported protocol versions for the handler.
     *
     * @param array $supportedProtocolVersion Array with supported protocol versions
     *
     * @return void
     */
    public function injectSupportedProtocolVersions(array $supportedProtocolVersion)
    {
        $this->supportedProtocolVersions = $supportedProtocolVersion;
    }

    /**
     * Injects the authenticator for the handler.
     *
     * @param \AppserverIo\Stomp\Interfaces\AuthenticatorInterface $authenticator The $authenticator
     *
     * @return void
     */
    public function injectAuthenticator(AuthenticatorInterface $authenticator)
    {
        $this->authenticator = $authenticator;
    }

    /**
     * Returns must the parent handler the connection close
     *
     * @return bool
     */
    public function getMustConnectionClose()
    {
        return $this->mustConnectionClose;
    }

    /**
     * Handle the connect request.
     *
     * @param \AppserverIo\Stomp\Frame $stompFrame The Stomp frame to handle the connect.
     *
     * @return void
     *
     * throws \AppserverIo\Stomp\Exception\ProtocolException
     */
    public function handle(Frame $stompFrame)
    {
        switch ($stompFrame->getCommand()) {
            case ClientCommands::CONNECT:
            case ClientCommands::STOMP: // case for client connect
                $this->response = $this->handleConnect($stompFrame);
                break;

            case ClientCommands::SEND: // case for client send message
                $this->handleSend($stompFrame);
                $this->response = null;
                break;

            case ClientCommands::DISCONNECT: // case for client disconnect
                $this->response = $this->handleDisConnect($stompFrame);
                break;
        }
    }

    /**
     * Detects the protocol version by given string
     *
     * @param string $protocolVersion The version string to detect the version
     *
     * @return string
     *
     * @throws \AppserverIo\Stomp\Exception\ProtocolException
     */
    public function detectProtocolVersion($protocolVersion)
    {
        // is not required to detect the version
        if (strpos($protocolVersion, ProtocolHandler::SEPARATOR) === false) {
            return $protocolVersion;
        }

        $supportedProtocolVersions = array_keys($this->supportedProtocolVersions);
        $acceptsVersions = explode(ProtocolHandler::SEPARATOR, $protocolVersion);
        $acceptsVersions = array_intersect($acceptsVersions, $supportedProtocolVersions);

        if (count($acceptsVersions) == 0) {
            $supportedVersions = implode(" ", array_keys($this->supportedProtocolVersions));
            throw new ProtocolException(sprintf(ErrorMessages::SUPPORTED_PROTOCOL_VERSIONS, $supportedVersions));
        }

        return max($acceptsVersions);
    }

    /**
     * Handle the connect request.
     *
     * @param \AppserverIo\Stomp\Frame $stompFrame The Stomp frame to handle the connect.
     *
     * @return \AppserverIo\Stomp\Frame The stomp frame Response
     *
     * @throws \AppserverIo\Stomp\Exception\ProtocolException
     */
    protected function handleConnect(Frame $stompFrame)
    {
        $protocolVersion = $stompFrame->getHeaderValueByKey(Headers::ACCEPT_VERSION);

        // detects the protocol version by given string
        $protocolVersion = $this->detectProtocolVersion($protocolVersion);

        $login = $stompFrame->getHeaderValueByKey(Headers::LOGIN);
        $passCode = $stompFrame->getHeaderValueByKey(Headers::PASSCODE);

        $this->getAuthenticator()->connect($login, $passCode);

        // create new session
        $connection = QueueConnectionFactory::createQueueConnection("stomp");
        $this->setSession($connection->createQueueSession());

        // create new stomp CONNECTED frame with headers and return
        $headers = array(
            Headers::SESSION => $this->getSession()->getId(),
            Headers::VERSION => $protocolVersion,
            Headers::SERVER => CommonValues::SERVER_NAME,
            Headers::HEART_BEAT => CommonValues::DEFAULT_HEART_BEAT
        );

        // returns the response frame
        return new Frame(ServerCommands::CONNECTED, $headers);
    }

    /**
     * Returns the authenticator,
     *
     * @return \AppserverIo\Stomp\Interfaces\AuthenticatorInterface
     */
    public function getAuthenticator()
    {
        return $this->authenticator;
    }

    /**
     * Returns the message queue session.
     *
     * @return \AppserverIo\Messaging\QueueSession
     */
    public function getSession()
    {
        return $this->session;
    }

    /**
     * Set the message queue session.
     *
     * @param \AppserverIo\Messaging\QueueSession $session The  message queue session to set.
     *
     * @return void
     */
    public function setSession($session)
    {
        $this->session = $session;
    }

    /**
     * Handle the send request.
     *
     * @param \AppserverIo\Stomp\Frame $stompFrame The Stomp frame to handle the connect.
     *
     * @return void
     *
     * @throws \AppserverIo\Stomp\Exception\ProtocolException
     */
    protected function handleSend(Frame $stompFrame)
    {
        // checks ist the client authenticated
        if ($this->getAuthenticator()->getIsAuthenticated() === false) {
            throw new ProtocolException(sprintf(ErrorMessages::FAILED_AUTH, ""));
        }

        // set the destination from the header
        $destination = $stompFrame->getHeaderValueByKey(Headers::DESTINATION);

        // initialize the connection and the session
        $queue = MessageQueue::createQueue($destination);

        // create the sender and send a simple string message
        $sender = $this->getSession()->createSender($queue);

        // push the message in the que
        $sender->send(new StringMessage($stompFrame->getBody()));
    }

    /**
     * Handle the disconnect request.
     *
     * @param \AppserverIo\Stomp\Frame $stompFrame The Stomp frame to handle the connect.
     *
     * @return \AppserverIo\Stomp\Frame The stomp frame Response
     */
    protected function handleDisConnect($stompFrame)
    {
        $headers = array();

        // set the client a receiptId than must server must add this to response header
        $receiptId = $stompFrame->getHeaderValueByKey(Headers::RECEIPT_REQUESTED);
        if (is_string($receiptId)) {
            $headers = array(Headers::RECEIPT_ID => $receiptId);
        }

        // set state to close the client connection
        $this->mustConnectionClose = true;

        // returns the response frame
        return new Frame(ServerCommands::RECEIPT, $headers);
    }

    /**
     * Returns the response stomp frame.
     *
     * @return \AppserverIo\Stomp\Frame
     */
    public function getResponseStompFrame()
    {
        return $this->response;
    }

    /**
     * Sets the state from handler to error
     *
     * @param string $message The message to set in the error frame.
     * @param array  $headers The header to set in the error frame.
     *
     * @return mixed
     */
    public function setErrorState($message = "", $headers = array())
    {
        $this->response = $this->handleError($message, $headers);
    }

    /**
     * Returns error stomp frame.
     *
     * @param string $message The message to set
     * @param array  $headers The headers to set
     *
     * @return \AppserverIo\Stomp\Frame
     */
    protected function handleError($message, array $headers = array())
    {
        // set the default header
        if (count($headers) == 0) {
            $headers = array(Headers::CONTENT_TYPE => CommonValues::TEXT_PLAIN);
        }

        // set state to close the client connection
        $this->mustConnectionClose = true;

        // returns the response frame
        return new Frame(ServerCommands::ERROR, $headers, $message);
    }
}


1			<?php
2
3			/**
4			* \AppserverIo\Stomp\ProtocolHandler
5			*
6			* NOTICE OF LICENSE
7			*
8			* This source file is subject to the Open Software License (OSL 3.0)
9			* that is available through the world-wide-web at this URL:
10			* http://opensource.org/licenses/osl-3.0.php
11			*
12			* PHP version 5
13			*
14			* @author Lars Roettig <[email protected]>
15			* @copyright 2016 TechDivision GmbH - <[email protected]>
16			* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
17			* @link http://www.appserver.io/
18			*/
19
20
21			namespace AppserverIo\Stomp;
22
23			use AppserverIo\Messaging\MessageQueue;
24			use AppserverIo\Messaging\QueueConnectionFactory;
25			use AppserverIo\Messaging\StringMessage;
26			use AppserverIo\Stomp\Interfaces\AuthenticatorInterface;
27			use AppserverIo\Stomp\Authenticator\SimpleAuthenticator;
28			use AppserverIo\Stomp\Exception\ProtocolException;
29			use AppserverIo\Stomp\Interfaces\ProtocolHandlerInterface;
30			use AppserverIo\Stomp\Protocol\ClientCommands;
31			use AppserverIo\Stomp\Protocol\CommonValues;
32			use AppserverIo\Stomp\Protocol\Headers;
33			use AppserverIo\Stomp\Protocol\ServerCommands;
34			use AppserverIo\Stomp\Utils\ErrorMessages;
35
36			/**
37			* Implementation to handle stomp request.
38			*
39			* @author Lars Roettig <[email protected]>
40			* @copyright 2016 TechDivision GmbH - <[email protected]>
41			* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
42			* @link http://www.appserver.io/
43			* @link https://github.com/stomp/stomp-spec/blob/master/src/stomp-specification-1.1.md
44			*/
45			class ProtocolHandler implements ProtocolHandlerInterface
46			{
47
48			/**
49			* Holds the Separator for protocol versions.
50			*
51			* @var string
52			*/
53			const SEPARATOR = ",";
54
55			/**
56			* The supported protocol versions.
57			*
58			* @var array
59			*/
60			protected $supportedProtocolVersions;
61
62			/**
63			* Holds the stomp authenticator.
64			*
65			* @var \AppserverIo\Stomp\Interfaces\AuthenticatorInterface
66			*/
67			protected $authenticator;
68
69			/**
70			* Holds the response as stomp frame.
71			*
72			* @var \AppserverIo\Stomp\Frame
73			*/
74			protected $response;
75
76			/**
77			* Holds the state to close parent connection.
78			*
79			* @var bool
80			*/
81			protected $mustConnectionClose;
82
83			/**
84			* Holds the queue session.
85			*
86			* @var \AppserverIo\Messaging\QueueSession
87			*/
88			protected $session;
89
90			/**
91			* Init new stomp protocol handler.
92			*/
93			public function __construct()
94			{
95			// set the supported protocol versions to 1.0,1.1,1.2
96			$this->injectSupportedProtocolVersions(array(
97			CommonValues::V1_0 => "",
98			CommonValues::V1_1 => "",
99			CommonValues::V1_2 => ""
100			));
101			$this->init();
102			}
103
104			/**
105			* Init the StompProtocolHandler
106			*
107			* @return void
108			*/
109			public function init()
110			{
111			$this->injectAuthenticator(new SimpleAuthenticator());
112			$this->mustConnectionClose = false;
113			}
114
115			/**
116			* Injects the supported protocol versions for the handler.
117			*
118			* @param array $supportedProtocolVersion Array with supported protocol versions
119			*
120			* @return void
121			*/
122			public function injectSupportedProtocolVersions(array $supportedProtocolVersion)
123			{
124			$this->supportedProtocolVersions = $supportedProtocolVersion;
125			}
126
127			/**
128			* Injects the authenticator for the handler.
129			*
130			* @param \AppserverIo\Stomp\Interfaces\AuthenticatorInterface $authenticator The $authenticator
131			*
132			* @return void
133			*/
134			public function injectAuthenticator(AuthenticatorInterface $authenticator)
135			{
136			$this->authenticator = $authenticator;
137			}
138
139			/**
140			* Returns must the parent handler the connection close
141			*
142			* @return bool
143			*/
144			public function getMustConnectionClose()
145			{
146			return $this->mustConnectionClose;
147			}
148
149			/**
150			* Handle the connect request.
151			*
152			* @param \AppserverIo\Stomp\Frame $stompFrame The Stomp frame to handle the connect.
153			*
154			* @return void
155			*
156			* throws \AppserverIo\Stomp\Exception\ProtocolException
157			*/
158			public function handle(Frame $stompFrame)
159			{
160			switch ($stompFrame->getCommand()) {
161			case ClientCommands::CONNECT:
162			case ClientCommands::STOMP: // case for client connect
163			$this->response = $this->handleConnect($stompFrame);
164			break;
165
166			case ClientCommands::SEND: // case for client send message
167			$this->handleSend($stompFrame);
168			$this->response = null;
169			break;
170
171			case ClientCommands::DISCONNECT: // case for client disconnect
172			$this->response = $this->handleDisConnect($stompFrame);
173			break;
174			}
175			}
176
177			/**
178			* Detects the protocol version by given string
179			*
180			* @param string $protocolVersion The version string to detect the version
181			*
182			* @return string
183			*
184			* @throws \AppserverIo\Stomp\Exception\ProtocolException
185			*/
186			public function detectProtocolVersion($protocolVersion)
187			{
188			// is not required to detect the version
189			if (strpos($protocolVersion, ProtocolHandler::SEPARATOR) === false) {
190			return $protocolVersion;
191			}
192
193			$supportedProtocolVersions = array_keys($this->supportedProtocolVersions);
194			$acceptsVersions = explode(ProtocolHandler::SEPARATOR, $protocolVersion);
195			$acceptsVersions = array_intersect($acceptsVersions, $supportedProtocolVersions);
196
197			if (count($acceptsVersions) == 0) {
198			$supportedVersions = implode(" ", array_keys($this->supportedProtocolVersions));
199			throw new ProtocolException(sprintf(ErrorMessages::SUPPORTED_PROTOCOL_VERSIONS, $supportedVersions));
200			}
201
202			return max($acceptsVersions);
203			}
204
205			/**
206			* Handle the connect request.
207			*
208			* @param \AppserverIo\Stomp\Frame $stompFrame The Stomp frame to handle the connect.
209			*
210			* @return \AppserverIo\Stomp\Frame The stomp frame Response
211			*
212			* @throws \AppserverIo\Stomp\Exception\ProtocolException
213			*/
214			protected function handleConnect(Frame $stompFrame)
215			{
216			$protocolVersion = $stompFrame->getHeaderValueByKey(Headers::ACCEPT_VERSION);
217
218			// detects the protocol version by given string
219			$protocolVersion = $this->detectProtocolVersion($protocolVersion);
220
221			$login = $stompFrame->getHeaderValueByKey(Headers::LOGIN);
222			$passCode = $stompFrame->getHeaderValueByKey(Headers::PASSCODE);
223
224			$this->getAuthenticator()->connect($login, $passCode);
225
226			// create new session
227			$connection = QueueConnectionFactory::createQueueConnection("stomp");
228			$this->setSession($connection->createQueueSession());
229
230			// create new stomp CONNECTED frame with headers and return
231			$headers = array(
232			Headers::SESSION => $this->getSession()->getId(),
233			Headers::VERSION => $protocolVersion,
234			Headers::SERVER => CommonValues::SERVER_NAME,
235			Headers::HEART_BEAT => CommonValues::DEFAULT_HEART_BEAT
236			);
237
238			// returns the response frame
239			return new Frame(ServerCommands::CONNECTED, $headers);
240			}
241
242			/**
243			* Returns the authenticator,
244			*
245			* @return \AppserverIo\Stomp\Interfaces\AuthenticatorInterface
246			*/
247			public function getAuthenticator()
248			{
249			return $this->authenticator;
250			}
251
252			/**
253			* Returns the message queue session.
254			*
255			* @return \AppserverIo\Messaging\QueueSession
256			*/
257			public function getSession()
258			{
259			return $this->session;
260			}
261
262			/**
263			* Set the message queue session.
264			*
265			* @param \AppserverIo\Messaging\QueueSession $session The message queue session to set.
266			*
267			* @return void
268			*/
269			public function setSession($session)
270			{
271			$this->session = $session;
272			}
273
274			/**
275			* Handle the send request.
276			*
277			* @param \AppserverIo\Stomp\Frame $stompFrame The Stomp frame to handle the connect.
278			*
279			* @return void
280			*
281			* @throws \AppserverIo\Stomp\Exception\ProtocolException
282			*/
283			protected function handleSend(Frame $stompFrame)
284			{
285			// checks ist the client authenticated
286			if ($this->getAuthenticator()->getIsAuthenticated() === false) {
287			throw new ProtocolException(sprintf(ErrorMessages::FAILED_AUTH, ""));
288			}
289
290			// set the destination from the header
291			$destination = $stompFrame->getHeaderValueByKey(Headers::DESTINATION);
292
293			// initialize the connection and the session
294			$queue = MessageQueue::createQueue($destination);
295
296			// create the sender and send a simple string message
297			$sender = $this->getSession()->createSender($queue);
298
299			// push the message in the que
300			$sender->send(new StringMessage($stompFrame->getBody()));
301			}
302
303			/**
304			* Handle the disconnect request.
305			*
306			* @param \AppserverIo\Stomp\Frame $stompFrame The Stomp frame to handle the connect.
307			*
308			* @return \AppserverIo\Stomp\Frame The stomp frame Response
309			*/
310			protected function handleDisConnect($stompFrame)
311			{
312			$headers = array();
313
314			// set the client a receiptId than must server must add this to response header
315			$receiptId = $stompFrame->getHeaderValueByKey(Headers::RECEIPT_REQUESTED);
316			if (is_string($receiptId)) {
317			$headers = array(Headers::RECEIPT_ID => $receiptId);
318			}
319
320			// set state to close the client connection
321			$this->mustConnectionClose = true;
322
323			// returns the response frame
324			return new Frame(ServerCommands::RECEIPT, $headers);
325			}
326
327			/**
328			* Returns the response stomp frame.
329			*
330			* @return \AppserverIo\Stomp\Frame
331			*/
332			public function getResponseStompFrame()
333			{
334			return $this->response;
335			}
336
337			/**
338			* Sets the state from handler to error
339			*
340			* @param string $message The message to set in the error frame.
341			* @param array $headers The header to set in the error frame.
342			*
343			* @return mixed
344			*/
345			public function setErrorState($message = "", $headers = array())
346			{
347			$this->response = $this->handleError($message, $headers);
348			}
349
350			/**
351			* Returns error stomp frame.
352			*
353			* @param string $message The message to set
354			* @param array $headers The headers to set
355			*
356			* @return \AppserverIo\Stomp\Frame
357			*/
358			protected function handleError($message, array $headers = array())
359			{
360			// set the default header
361			if (count($headers) == 0) {
362			$headers = array(Headers::CONTENT_TYPE => CommonValues::TEXT_PLAIN);
363			}
364
365			// set state to close the client connection
366			$this->mustConnectionClose = true;
367
368			// returns the response frame
369			return new Frame(ServerCommands::ERROR, $headers, $message);
370			}
371			}
372

larsroettig / stomp

ProtocolHandler::handleError() A last analyzed 2016-02-24 17:11 UTC

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ProtocolHandler::handleError() A
last analyzed 2016-02-24 17:11 UTC