DefaultUnitOfWork::findSimilarAggregate() - Code Metrics - SmartGecko/GovernorFramework - Measure and Improve Code Quality continuously with Scrutinizer

DefaultUnitOfWork::findSimilarAggregate() A
last analyzed 2015-11-28 20:33 UTC

↳ Parent: DefaultUnitOfWork

Complexity

Conditions	4
Paths	3

Size

Total Lines	14
Code Lines	7

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	8
CRAP Score	4

Importance

Changes	5
Bugs	0	Features	0

Metric	Value
c	5
b	0
f	0
dl	0
loc	14
ccs	8
cts	8
cp	1
rs	9.2
cc	4
eloc	7
nc	3
nop	2
crap	4

<?php

/*
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The software is based on the Axon Framework project which is
 * licensed under the Apache 2.0 license. For more information on the Axon Framework
 * see <http://www.axonframework.org/>.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the MIT license. For more information, see
 * <http://www.governor-framework.org/>.
 */

namespace Governor\Framework\UnitOfWork;

use Governor\Framework\Domain\AggregateRootInterface;
use Governor\Framework\EventHandling\EventBusInterface;
use Governor\Framework\Domain\EventMessageInterface;
use Governor\Framework\Domain\DomainEventMessageInterface;

/**
 * DefaultUnitOfWork.
 *
 * @author    "David Kalosi" <[email protected]>
 * @license   <a href="http://www.opensource.org/licenses/mit-license.php">MIT License</a>
 */
class DefaultUnitOfWork extends NestableUnitOfWork
{

    /**
     * @var AggregateRootInterface[]
     */
    private $registeredAggregates = [];

    /**
     * @var \SplObjectStorage
     */
    private $eventsToPublish;

    /**
     * @var UnitOfWorkListenerCollection
     */
    private $listeners;

    /**
     * @var integer
     */
    private $dispatcherStatus;

    /**
     * @var TransactionManagerInterface
     */
    private $transactionManager;

    /**
     * @var mixed
     */
    private $transaction;

    const STATUS_READY = 0;
    const STATUS_DISPATCHING = 1;

    public function __construct(TransactionManagerInterface $transactionManager = null)
    {
        parent::__construct();

        $this->listeners = new UnitOfWorkListenerCollection();
        $this->eventsToPublish = new \SplObjectStorage();
        $this->dispatcherStatus = self::STATUS_READY;
        $this->transactionManager = $transactionManager;
    }

    /**
     *
     * @param TransactionManagerInterface $transactionManager
     * @return UnitOfWorkInterface
     */
    public static function startAndGet(TransactionManagerInterface $transactionManager = null)
    {
        $uow = new DefaultUnitOfWork($transactionManager);
        $uow->start();

        return $uow;
    }

    public function isTransactional()
    {
        return null !== $this->transactionManager;
    }

    protected function doCommit()
    {
        $this->publishEvents();
        $this->commitInnerUnitOfWork();

        if ($this->isTransactional()) {
            $this->notifyListenersPrepareTransactionCommit(null);
            $this->transactionManager->commitTransaction($this->transaction);
        }

        $this->notifyListenersAfterCommit();
    }

    protected function doRollback(\Exception $ex = null)
    {
        $this->registeredAggregates = array();
        $this->eventsToPublish = new \SplObjectStorage();

        try {
            if (null !== $this->transaction) {
                $this->transactionManager->rollbackTransaction($this->transaction);
            }
        } finally {
            $this->notifyListenersRollback($ex);
        }
    }

    protected function notifyListenersRollback(\Exception $ex = null)
    {
        $this->listeners->onRollback($this, $ex);
    }

    public function registerAggregate(
        AggregateRootInterface $aggregateRoot,
        EventBusInterface $eventBus,
        SaveAggregateCallbackInterface $saveAggregateCallback
    ) {
        $similarAggregate = $this->findSimilarAggregate(
            get_class($aggregateRoot),
            $aggregateRoot->getIdentifier()
        );
        if (null !== $similarAggregate) {

            $this->logger->info(
                "Ignoring aggregate registration. An aggregate of same type and identifier was already".
                "registered in this Unit Of Work: type [{aggregate}], identifier [{identifier}]",
                array('aggregate' => get_class($aggregateRoot), 'identifier' => $aggregateRoot->getIdentifier())
            );

            return $similarAggregate;
        }

        $uow = $this;
        $eventRegistrationCallback = new UoWEventRegistrationCallback(
            function (DomainEventMessageInterface $event) use ($uow, $eventBus) {
                $event = $uow->invokeEventRegistrationListeners($event);
                $uow->eventsToPublishOn($event, $eventBus);

                return $event;
            }
        );

        $this->registeredAggregates[spl_object_hash($aggregateRoot)] = array(
            $aggregateRoot,
            $saveAggregateCallback
        );

        $this->logger->debug(
            "Registering aggregate {aggregate}",
            array('aggregate' => get_class($aggregateRoot))
        );

        // listen for new events registered in the aggregate
        $aggregateRoot->addEventRegistrationCallback($eventRegistrationCallback);

        return $aggregateRoot;
    }

    public function registerListener($listener)
    {
        $this->listeners->add($listener);
    }

    private function findSimilarAggregate($aggregateType, $identifier)
    {
        foreach ($this->registeredAggregates as $hash => $aggregateEntry) {
            list ($aggregate, $callback) = $aggregateEntry;
<?php

function returnThreeValues() {
    return array('a', 'b', 'c');
}

list($a, $b, $c) = returnThreeValues();

print $a . " - " . $c;

            if (get_class($aggregate) === $aggregateType && $aggregate->getIdentifier()
                === $identifier
            ) {
                return $aggregate;
            }
        }

        return null;
    }

    private function eventsToPublishOn(
        EventMessageInterface $event,
        EventBusInterface $eventBus
    ) {
        if (!$this->eventsToPublish->contains($eventBus)) {
            $this->eventsToPublish->attach($eventBus, array($event));

            return;
        }

        $events = $this->eventsToPublish->offsetGet($eventBus);
        $events[] = $event;
        $this->eventsToPublish->offsetSet($eventBus, $events);
    }

    private function invokeEventRegistrationListeners(EventMessageInterface $event)
    {
        return $this->listeners->onEventRegistered($this, $event);
    }

    public function publishEvent(
        EventMessageInterface $event,
        EventBusInterface $eventBus
    ) {
        $event = $this->invokeEventRegistrationListeners($event);
        $this->eventsToPublishOn($event, $eventBus);
    }

    /**
     * Publishes all registered events to their respective event bus.
     */
    protected function publishEvents()
    {
        $this->logger->debug("Publishing events to the event bus");
        if ($this->dispatcherStatus == self::STATUS_DISPATCHING) {
            // this prevents events from overtaking each other
            $this->logger->debug(
                "UnitOfWork is already in the dispatch process. ".
                "That process will publish events instead. Aborting..."
            );

            return;
        }
        $this->dispatcherStatus = self::STATUS_DISPATCHING;
        $this->eventsToPublish->rewind();

        while ($this->eventsToPublish->valid()) {
            $bus = $this->eventsToPublish->current();
            $events = $this->eventsToPublish->getInfo();

            foreach ($events as $event) {
                $this->logger->debug(
                    "Publishing event [{event}] to event bus [{bus}]",
                    array('event' => $event->getPayloadType(), 'bus' => get_class($bus))
                );
            }

            // clear and send
            $this->eventsToPublish->setInfo(array());
            $bus->publish($events);

            $this->eventsToPublish->next();
        }

        $this->logger->debug("All events successfully published.");
        $this->dispatcherStatus = self::STATUS_READY;
    }

    protected function doStart()
    {
        if ($this->isTransactional()) {
            $this->transaction = $this->transactionManager->startTransaction();
        }
    }

    protected function notifyListenersPrepareCommit()
    {
        $list = array();

        foreach ($this->registeredAggregates as $aggregateEntry) {
            $list[] = $aggregateEntry[0];
        }

        $this->listeners->onPrepareCommit($this, $list, $this->eventsToPublish());
    }

    /**
     * Send a {@link UnitOfWorkListener#afterCommit(UnitOfWork)} notification to all registered listeners.
     *
     * @param mixed $transaction The object representing the transaction to about to be committed
     */
    protected function notifyListenersPrepareTransactionCommit($transaction)
    {
        $this->listeners->onPrepareTransactionCommit($this, $transaction);
    }

    private function eventsToPublish()
    {
        $events = array();

        $this->eventsToPublish->rewind();
        while ($this->eventsToPublish->valid()) {
            $events = array_merge($events, $this->eventsToPublish->getInfo());
            $this->eventsToPublish->next();
        }

        return $events;
    }

    protected function notifyListenersCleanup()
    {
        $this->listeners->onCleanup($this);
    }

    protected function notifyListenersAfterCommit()
    {
        $this->listeners->afterCommit($this);
    }

    protected function saveAggregates()
    {
        $this->logger->debug("Persisting changes to aggregates");
        foreach ($this->registeredAggregates as $aggregateEntry) {
            list ($aggregate, $callback) = $aggregateEntry;

            $this->logger->debug(
                "Persisting changes to [{aggregate}], identifier: [{id}]",
                array(
                    'aggregate' => get_class($aggregate),
                    'id' => $aggregate->getIdentifier()
                )
            );

            $callback->save($aggregate);
        }
        $this->logger->debug("Aggregates successfully persisted");
        $this->registeredAggregates = array();
    }

}


1		<?php
2
3		/*
4		* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
5		* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
6		* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
7		* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
8		* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
9		* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
10		* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
11		* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
12		* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
13		* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
14		* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
15		*
16		* The software is based on the Axon Framework project which is
17		* licensed under the Apache 2.0 license. For more information on the Axon Framework
18		* see <http://www.axonframework.org/>.
19		*
20		* This software consists of voluntary contributions made by many individuals
21		* and is licensed under the MIT license. For more information, see
22		* <http://www.governor-framework.org/>.
23		*/
24
25		namespace Governor\Framework\UnitOfWork;
26
27		use Governor\Framework\Domain\AggregateRootInterface;
28		use Governor\Framework\EventHandling\EventBusInterface;
29		use Governor\Framework\Domain\EventMessageInterface;
30		use Governor\Framework\Domain\DomainEventMessageInterface;
31
32		/**
33		* DefaultUnitOfWork.
34		*
35		* @author "David Kalosi" <[email protected]>
36		* @license <a href="http://www.opensource.org/licenses/mit-license.php">MIT License</a>
37		*/
38		class DefaultUnitOfWork extends NestableUnitOfWork
39		{
40
41		/**
42		* @var AggregateRootInterface[]
43		*/
44		private $registeredAggregates = [];
45
46		/**
47		* @var \SplObjectStorage
48		*/
49		private $eventsToPublish;
50
51		/**
52		* @var UnitOfWorkListenerCollection
53		*/
54		private $listeners;
55
56		/**
57		* @var integer
58		*/
59		private $dispatcherStatus;
60
61		/**
62		* @var TransactionManagerInterface
63		*/
64		private $transactionManager;
65
66		/**
67		* @var mixed
68		*/
69		private $transaction;
70
71		const STATUS_READY = 0;
72		const STATUS_DISPATCHING = 1;
73
74	46	public function __construct(TransactionManagerInterface $transactionManager = null)
75		{
76	46	parent::__construct();
77
78	46	$this->listeners = new UnitOfWorkListenerCollection();
79	46	$this->eventsToPublish = new \SplObjectStorage();
80	46	$this->dispatcherStatus = self::STATUS_READY;
81	46	$this->transactionManager = $transactionManager;
82	46	}
83
84		/**
85		*
86		* @param TransactionManagerInterface $transactionManager
87		* @return UnitOfWorkInterface
88		*/
89	41	public static function startAndGet(TransactionManagerInterface $transactionManager = null)
90		{
91	41	$uow = new DefaultUnitOfWork($transactionManager);
92	41	$uow->start();
93
94	41	return $uow;
95		}
96
97	46	public function isTransactional()
98		{
99	46	return null !== $this->transactionManager;
100		}
101
102	24	protected function doCommit()
103		{
104	24	$this->publishEvents();
105	23	$this->commitInnerUnitOfWork();
106
107	23	if ($this->isTransactional()) {
108	3	$this->notifyListenersPrepareTransactionCommit(null);
109	2	$this->transactionManager->commitTransaction($this->transaction);
110	2	}
111
112	22	$this->notifyListenersAfterCommit();
113	22	}
114
115	27	protected function doRollback(\Exception $ex = null)
116		{
117	27	$this->registeredAggregates = array();
118	27	$this->eventsToPublish = new \SplObjectStorage();
119
120		try {
121	27	if (null !== $this->transaction) {
122	1	$this->transactionManager->rollbackTransaction($this->transaction);
123	1	}
124	27	} finally {
125	27	$this->notifyListenersRollback($ex);
126		}
127	27	}
128
129	27	protected function notifyListenersRollback(\Exception $ex = null)
130		{
131	27	$this->listeners->onRollback($this, $ex);
132	27	}
133
134	16	public function registerAggregate(
135		AggregateRootInterface $aggregateRoot,
136		EventBusInterface $eventBus,
137		SaveAggregateCallbackInterface $saveAggregateCallback
138		) {
139	16	$similarAggregate = $this->findSimilarAggregate(
140	16	get_class($aggregateRoot),
141	16	$aggregateRoot->getIdentifier()
142	16	);
143	16	if (null !== $similarAggregate) {
144
145	1	$this->logger->info(
146		"Ignoring aggregate registration. An aggregate of same type and identifier was already".
147	1	"registered in this Unit Of Work: type [{aggregate}], identifier [{identifier}]",
148	1	array('aggregate' => get_class($aggregateRoot), 'identifier' => $aggregateRoot->getIdentifier())
149	1	);
150
151	1	return $similarAggregate;
152		}
153
154	16	$uow = $this;
155	16	$eventRegistrationCallback = new UoWEventRegistrationCallback(
156	11	function (DomainEventMessageInterface $event) use ($uow, $eventBus) {
157	11	$event = $uow->invokeEventRegistrationListeners($event);
158	11	$uow->eventsToPublishOn($event, $eventBus);
159
160	11	return $event;
161		}
162	16	);
163
164	16	$this->registeredAggregates[spl_object_hash($aggregateRoot)] = array(
165	16	$aggregateRoot,
166		$saveAggregateCallback
167	16	);
168
169	16	$this->logger->debug(
170	16	"Registering aggregate {aggregate}",
171	16	array('aggregate' => get_class($aggregateRoot))
172	16	);
173
174		// listen for new events registered in the aggregate
175	16	$aggregateRoot->addEventRegistrationCallback($eventRegistrationCallback);
176
177	16	return $aggregateRoot;
178		}
179
180	26	public function registerListener($listener)
181		{
182	26	$this->listeners->add($listener);
183	26	}
184
185	16	private function findSimilarAggregate($aggregateType, $identifier)
186		{
187	16	foreach ($this->registeredAggregates as $hash => $aggregateEntry) {
188	1	list ($aggregate, $callback) = $aggregateEntry;
		0 ignored issues – show Unused Code introduced 2015-11-28 13:13 UTC by Report Bug Copy Issue Report The assignment to `$callback` is unused. Consider omitting it like so `list($first,,$third)`. This checks looks for assignemnts to variables using the `list(...)` function, where not all assigned variables are subsequently used. Consider the following code example. <?php function returnThreeValues() { return array('a', 'b', 'c'); } list($a, $b, $c) = returnThreeValues(); print $a . " - " . $c; Only the variables `$a` and `$c` are used. There was no need to assign `$b`. Instead, the list call could have been. list($a,, $c) = returnThreeValues(); Loading history...
189
190	1	if (get_class($aggregate) === $aggregateType && $aggregate->getIdentifier()
191		=== $identifier
192	1	) {
193	1	return $aggregate;
194		}
195	16	}
196
197	16	return null;
198		}
199
200	13	private function eventsToPublishOn(
201		EventMessageInterface $event,
202		EventBusInterface $eventBus
203		) {
204	13	if (!$this->eventsToPublish->contains($eventBus)) {
205	13	$this->eventsToPublish->attach($eventBus, array($event));
206
207	13	return;
208		}
209
210	4	$events = $this->eventsToPublish->offsetGet($eventBus);
211	4	$events[] = $event;
212	4	$this->eventsToPublish->offsetSet($eventBus, $events);
213	4	}
214
215	13	private function invokeEventRegistrationListeners(EventMessageInterface $event)
216		{
217	13	return $this->listeners->onEventRegistered($this, $event);
218		}
219
220	2	public function publishEvent(
221		EventMessageInterface $event,
222		EventBusInterface $eventBus
223		) {
224	2	$event = $this->invokeEventRegistrationListeners($event);
225	2	$this->eventsToPublishOn($event, $eventBus);
226	2	}
227
228		/**
229		* Publishes all registered events to their respective event bus.
230		*/
231	24	protected function publishEvents()
232		{
233	24	$this->logger->debug("Publishing events to the event bus");
234	24	if ($this->dispatcherStatus == self::STATUS_DISPATCHING) {
235		// this prevents events from overtaking each other
236		$this->logger->debug(
237		"UnitOfWork is already in the dispatch process. ".
238		"That process will publish events instead. Aborting..."
239		);
240
241		return;
242		}
243	24	$this->dispatcherStatus = self::STATUS_DISPATCHING;
244	24	$this->eventsToPublish->rewind();
245
246	24	while ($this->eventsToPublish->valid()) {
247	12	$bus = $this->eventsToPublish->current();
248	12	$events = $this->eventsToPublish->getInfo();
249
250	12	foreach ($events as $event) {
251	12	$this->logger->debug(
252	12	"Publishing event [{event}] to event bus [{bus}]",
253	12	array('event' => $event->getPayloadType(), 'bus' => get_class($bus))
254	12	);
255	12	}
256
257		// clear and send
258	12	$this->eventsToPublish->setInfo(array());
259	12	$bus->publish($events);
260
261	11	$this->eventsToPublish->next();
262	11	}
263
264	23	$this->logger->debug("All events successfully published.");
265	23	$this->dispatcherStatus = self::STATUS_READY;
266	23	}
267
268	46	protected function doStart()
269		{
270	46	if ($this->isTransactional()) {
271	4	$this->transaction = $this->transactionManager->startTransaction();
272	4	}
273	46	}
274
275	28	protected function notifyListenersPrepareCommit()
276		{
277	28	$list = array();
278
279	28	foreach ($this->registeredAggregates as $aggregateEntry) {
280	12	$list[] = $aggregateEntry[0];
281	28	}
282
283	28	$this->listeners->onPrepareCommit($this, $list, $this->eventsToPublish());
284	27	}
285
286		/**
287		* Send a {@link UnitOfWorkListener#afterCommit(UnitOfWork)} notification to all registered listeners.
288		*
289		* @param mixed $transaction The object representing the transaction to about to be committed
290		*/
291	3	protected function notifyListenersPrepareTransactionCommit($transaction)
292		{
293	3	$this->listeners->onPrepareTransactionCommit($this, $transaction);
294	2	}
295
296	28	private function eventsToPublish()
297		{
298	28	$events = array();
299
300	28	$this->eventsToPublish->rewind();
301	28	while ($this->eventsToPublish->valid()) {
302	11	$events = array_merge($events, $this->eventsToPublish->getInfo());
303	11	$this->eventsToPublish->next();
304	11	}
305
306	28	return $events;
307		}
308
309	44	protected function notifyListenersCleanup()
310		{
311	44	$this->listeners->onCleanup($this);
312	44	}
313
314	22	protected function notifyListenersAfterCommit()
315		{
316	22	$this->listeners->afterCommit($this);
317	22	}
318
319	27	protected function saveAggregates()
320		{
321	27	$this->logger->debug("Persisting changes to aggregates");
322	27	foreach ($this->registeredAggregates as $aggregateEntry) {
323	12	list ($aggregate, $callback) = $aggregateEntry;
324
325	12	$this->logger->debug(
326	12	"Persisting changes to [{aggregate}], identifier: [{id}]",
327		array(
328	12	'aggregate' => get_class($aggregate),
329	12	'id' => $aggregate->getIdentifier()
330	12	)
331	12	);
332
333	12	$callback->save($aggregate);
334	26	}
335	26	$this->logger->debug("Aggregates successfully persisted");
336	26	$this->registeredAggregates = array();
337	26	}
338
339		}
340

SmartGecko / GovernorFramework

DefaultUnitOfWork::findSimilarAggregate() A last analyzed 2015-11-28 20:33 UTC

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DefaultUnitOfWork::findSimilarAggregate() A
last analyzed 2015-11-28 20:33 UTC