Projectionist::__construct() - Code Metrics - Inspection of "Version 2 review" - spatie/laravel-event-projector - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#137)

by Sebastian

created 2019-04-08 15:58 UTC

Projectionist::__construct() A

↳ Parent: Projectionist

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	9
rs	9.9666
c	0
b	0
f	0
cc	1
nc	1
nop	1

<?php

namespace Spatie\EventProjector;

use Exception;
use Illuminate\Support\Arr;
use Illuminate\Support\Collection;
use Spatie\EventProjector\Models\StoredEvent;
use Spatie\EventProjector\Projectors\Projector;
use Spatie\EventProjector\EventHandlers\EventHandler;
use Spatie\EventProjector\Events\FinishedEventReplay;
use Spatie\EventProjector\Events\StartingEventReplay;
use Spatie\EventProjector\Exceptions\InvalidEventHandler;
use Spatie\EventProjector\EventHandlers\EventHandlerCollection;
use Spatie\EventProjector\Events\EventHandlerFailedHandlingEvent;

final class Projectionist
{
    /** @var \Spatie\EventProjector\EventHandlers\EventHandlerCollection */
    private $projectors;

    /** @var \Spatie\EventProjector\EventHandlers\EventHandlerCollection */
    private $reactors;

    /** @var bool */
    private $catchExceptions;

    /** @var bool */
    private $replayChunkSize;

    /** @var string */
    private $storedEventClass;

    /** @var bool */
    private $isProjecting = false;

    /** @var bool */
    private $isReplaying = false;

    public function __construct(array $config)
    {
        $this->projectors = new EventHandlerCollection();
        $this->reactors = new EventHandlerCollection();

        $this->catchExceptions = $config['catch_exceptions'];
        $this->replayChunkSize = $config['replay_chunk_size'];
        $this->storedEventClass = $config['stored_event_model'];
    }

    public function addProjector($projector): Projectionist
    {
        if (is_string($projector)) {
            $projector = app($projector);
        }

        if (! $projector instanceof Projector) {
            throw InvalidEventHandler::notAProjector($projector);
        }

        $this->projectors->add($projector);

        return $this;
    }

    public function withoutEventHandlers(array $eventHandlers = null): Projectionist
    {
        if (is_null($eventHandlers)) {
            $this->projectors = new EventHandlerCollection();
            $this->reactors = new EventHandlerCollection();

            return $this;
        }

        $eventHandlers = Arr::wrap($eventHandlers);

        $this->projectors->remove($eventHandlers);

        $this->reactors->remove($eventHandlers);

        return $this;
    }

    public function withoutEventHandler(string $eventHandler): Projectionist
    {
        return $this->withoutEventHandlers([$eventHandler]);
    }

    public function addProjectors(array $projectors): Projectionist
    {
        foreach ($projectors as $projector) {
            $this->addProjector($projector);
        }

        return $this;
    }

    public function getProjectors(): Collection
    {
        return $this->projectors->all();
    }

    public function getProjector(string $name): ?Projector
    {
        return $this->projectors->all()->first(function (Projector $projector) use ($name) {
            return $projector->getName() === $name;
        });
    }

    public function addReactor($reactor): Projectionist
    {
        if (is_string($reactor)) {
            $reactor = app($reactor);
        }

        if (! $reactor instanceof EventHandler) {
            throw InvalidEventHandler::notAnEventHandler($reactor);
        }

        $this->reactors->add($reactor);

        return $this;
    }

    public function addReactors(array $reactors): Projectionist
    {
        foreach ($reactors as $reactor) {
            $this->addReactor($reactor);
        }

        return $this;
    }

    public function getReactors(): Collection
    {
        return $this->reactors->all();
    }

    public function handle(StoredEvent $storedEvent): void
    {
        $projectors = $this->projectors
            ->forEvent($storedEvent)
            ->reject(function (Projector $projector) {
                return $projector->shouldBeCalledImmediately();
            });

        $this->applyStoredEventToProjectors(
            $storedEvent,
            $projectors
        );

        $this->applyStoredEventToReactors(
            $storedEvent,
            $this->reactors->forEvent($storedEvent)
        );
    }

    public function handleWithSyncProjectors(StoredEvent $storedEvent): void
    {
        $projectors = $this->projectors
            ->forEvent($storedEvent)
            ->filter(function (Projector $projector) {
                return $projector->shouldBeCalledImmediately();
            });

        $this->applyStoredEventToProjectors($storedEvent, $projectors);
    }

    public function isProjecting(): bool
    {
        return $this->isProjecting;
    }

    private function applyStoredEventToProjectors(StoredEvent $storedEvent, Collection $projectors): void
    {
        $this->isProjecting = true;

        foreach ($projectors as $projector) {
            $this->callEventHandler($projector, $storedEvent);
        }

        $this->isProjecting = false;
    }

    private function applyStoredEventToReactors(StoredEvent $storedEvent, Collection $reactors): void
    {
        foreach ($reactors as $reactor) {
            $this->callEventHandler($reactor, $storedEvent);
        }
    }

    private function callEventHandler(EventHandler $eventHandler, StoredEvent $storedEvent): bool
    {
        try {
            $eventHandler->handle($storedEvent);
        } catch (Exception $exception) {
            if (! $this->catchExceptions) {
                throw $exception;
            }

            $eventHandler->handleException($exception);

            event(new EventHandlerFailedHandlingEvent($eventHandler, $storedEvent, $exception));

            return false;
        }

        return true;
    }

    public function isReplaying(): bool
    {
        return $this->isReplaying;
    }

    public function replay(
        Collection $projectors,
        int $startingFromEventId = 0,
        callable $onEventReplayed = null
    ): void {
        $projectors = new EventHandlerCollection($projectors);
function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);

        $this->isReplaying = true;

        if ($startingFromEventId === 0) {
            $projectors->all()->each(function (Projector $projector) {
                if (method_exists($projector, 'resetState')) {
                    $projector->resetState();

                }
            });
        }

        event(new StartingEventReplay($projectors->all()));

        $projectors->call('onStartingEventReplay');

        $this->getStoredEventClass()::query()

            ->startingFrom($startingFromEventId ?? 0)
            ->chunk($this->replayChunkSize, function (Collection $storedEvents) use ($projectors, $onEventReplayed) {
                $storedEvents->each(function (StoredEvent $storedEvent) use ($projectors, $onEventReplayed) {
                    $this->applyStoredEventToProjectors(
                        $storedEvent,
                        $projectors->forEvent($storedEvent)
                    );

                    if ($onEventReplayed) {
                        $onEventReplayed($storedEvent);
                    }
                });
            });

        $this->isReplaying = false;

        event(new FinishedEventReplay());

        $projectors->call('onFinishedEventReplay');
    }

    private function getStoredEventClass(): string
    {
        return $this->storedEventClass;
    }
}


1			<?php
2
3			namespace Spatie\EventProjector;
4
5			use Exception;
6			use Illuminate\Support\Arr;
7			use Illuminate\Support\Collection;
8			use Spatie\EventProjector\Models\StoredEvent;
9			use Spatie\EventProjector\Projectors\Projector;
10			use Spatie\EventProjector\EventHandlers\EventHandler;
11			use Spatie\EventProjector\Events\FinishedEventReplay;
12			use Spatie\EventProjector\Events\StartingEventReplay;
13			use Spatie\EventProjector\Exceptions\InvalidEventHandler;
14			use Spatie\EventProjector\EventHandlers\EventHandlerCollection;
15			use Spatie\EventProjector\Events\EventHandlerFailedHandlingEvent;
16
17			final class Projectionist
18			{
19			/** @var \Spatie\EventProjector\EventHandlers\EventHandlerCollection */
20			private $projectors;
21
22			/** @var \Spatie\EventProjector\EventHandlers\EventHandlerCollection */
23			private $reactors;
24
25			/** @var bool */
26			private $catchExceptions;
27
28			/** @var bool */
29			private $replayChunkSize;
30
31			/** @var string */
32			private $storedEventClass;
33
34			/** @var bool */
35			private $isProjecting = false;
36
37			/** @var bool */
38			private $isReplaying = false;
39
40			public function __construct(array $config)
41			{
42			$this->projectors = new EventHandlerCollection();
43			$this->reactors = new EventHandlerCollection();
44
45			$this->catchExceptions = $config['catch_exceptions'];
46			$this->replayChunkSize = $config['replay_chunk_size'];
47			$this->storedEventClass = $config['stored_event_model'];
48			}
49
50			public function addProjector($projector): Projectionist
51			{
52			if (is_string($projector)) {
53			$projector = app($projector);
54			}
55
56			if (! $projector instanceof Projector) {
57			throw InvalidEventHandler::notAProjector($projector);
58			}
59
60			$this->projectors->add($projector);
61
62			return $this;
63			}
64
65			public function withoutEventHandlers(array $eventHandlers = null): Projectionist
66			{
67			if (is_null($eventHandlers)) {
68			$this->projectors = new EventHandlerCollection();
69			$this->reactors = new EventHandlerCollection();
70
71			return $this;
72			}
73
74			$eventHandlers = Arr::wrap($eventHandlers);
75
76			$this->projectors->remove($eventHandlers);
77
78			$this->reactors->remove($eventHandlers);
79
80			return $this;
81			}
82
83			public function withoutEventHandler(string $eventHandler): Projectionist
84			{
85			return $this->withoutEventHandlers([$eventHandler]);
86			}
87
88			public function addProjectors(array $projectors): Projectionist
89			{
90			foreach ($projectors as $projector) {
91			$this->addProjector($projector);
92			}
93
94			return $this;
95			}
96
97			public function getProjectors(): Collection
98			{
99			return $this->projectors->all();
100			}
101
102			public function getProjector(string $name): ?Projector
103			{
104			return $this->projectors->all()->first(function (Projector $projector) use ($name) {
105			return $projector->getName() === $name;
106			});
107			}
108
109			public function addReactor($reactor): Projectionist
110			{
111			if (is_string($reactor)) {
112			$reactor = app($reactor);
113			}
114
115			if (! $reactor instanceof EventHandler) {
116			throw InvalidEventHandler::notAnEventHandler($reactor);
117			}
118
119			$this->reactors->add($reactor);
120
121			return $this;
122			}
123
124			public function addReactors(array $reactors): Projectionist
125			{
126			foreach ($reactors as $reactor) {
127			$this->addReactor($reactor);
128			}
129
130			return $this;
131			}
132
133			public function getReactors(): Collection
134			{
135			return $this->reactors->all();
136			}
137
138			public function handle(StoredEvent $storedEvent): void
139			{
140			$projectors = $this->projectors
141			->forEvent($storedEvent)
142			->reject(function (Projector $projector) {
143			return $projector->shouldBeCalledImmediately();
144			});
145
146			$this->applyStoredEventToProjectors(
147			$storedEvent,
148			$projectors
149			);
150
151			$this->applyStoredEventToReactors(
152			$storedEvent,
153			$this->reactors->forEvent($storedEvent)
154			);
155			}
156
157			public function handleWithSyncProjectors(StoredEvent $storedEvent): void
158			{
159			$projectors = $this->projectors
160			->forEvent($storedEvent)
161			->filter(function (Projector $projector) {
162			return $projector->shouldBeCalledImmediately();
163			});
164
165			$this->applyStoredEventToProjectors($storedEvent, $projectors);
166			}
167
168			public function isProjecting(): bool
169			{
170			return $this->isProjecting;
171			}
172
173			private function applyStoredEventToProjectors(StoredEvent $storedEvent, Collection $projectors): void
174			{
175			$this->isProjecting = true;
176
177			foreach ($projectors as $projector) {
178			$this->callEventHandler($projector, $storedEvent);
179			}
180
181			$this->isProjecting = false;
182			}
183
184			private function applyStoredEventToReactors(StoredEvent $storedEvent, Collection $reactors): void
185			{
186			foreach ($reactors as $reactor) {
187			$this->callEventHandler($reactor, $storedEvent);
188			}
189			}
190
191			private function callEventHandler(EventHandler $eventHandler, StoredEvent $storedEvent): bool
192			{
193			try {
194			$eventHandler->handle($storedEvent);
195			} catch (Exception $exception) {
196			if (! $this->catchExceptions) {
197			throw $exception;
198			}
199
200			$eventHandler->handleException($exception);
201
202			event(new EventHandlerFailedHandlingEvent($eventHandler, $storedEvent, $exception));
203
204			return false;
205			}
206
207			return true;
208			}
209
210			public function isReplaying(): bool
211			{
212			return $this->isReplaying;
213			}
214
215			public function replay(
216			Collection $projectors,
217			int $startingFromEventId = 0,
218			callable $onEventReplayed = null
219			): void {
220			$projectors = new EventHandlerCollection($projectors);
			0 ignored issues – show Documentation introduced 2018-07-11 11:49 UTC by Report Bug Copy Issue Report `$projectors` is of type `object<Illuminate\Support\Collection>`, but the function expects a `array`. It seems like the type of the argument is not accepted by the function/method which you are calling. In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug. We suggest to add an explicit type cast like in the following example: function acceptsInteger($int) { } $x = '123'; // string "123" // Instead of acceptsInteger($x); // we recommend to use acceptsInteger((integer) $x); Loading history...
221
222			$this->isReplaying = true;
223
224			if ($startingFromEventId === 0) {
225			$projectors->all()->each(function (Projector $projector) {
226			if (method_exists($projector, 'resetState')) {
227			$projector->resetState();
			0 ignored issues – show Bug introduced 2019-04-08 16:03 UTC by Report Bug Copy Issue Report The method `resetState()` does not seem to exist on `object<Spatie\EventProje...r\Projectors\Projector>`. This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces. This is most likely a typographical error or the method has been renamed. Loading history...
228			}
229			});
230			}
231
232			event(new StartingEventReplay($projectors->all()));
233
234			$projectors->call('onStartingEventReplay');
235
236			$this->getStoredEventClass()::query()
			0 ignored issues – show Bug introduced 2018-08-27 13:46 UTC by Report Bug Copy Issue Report The method `query` cannot be called on `$this->getStoredEventClass()` (of type `string`). Methods can only be called on objects. This check looks for methods being called on variables that have been inferred to never be objects. Loading history...
237			->startingFrom($startingFromEventId ?? 0)
238			->chunk($this->replayChunkSize, function (Collection $storedEvents) use ($projectors, $onEventReplayed) {
239			$storedEvents->each(function (StoredEvent $storedEvent) use ($projectors, $onEventReplayed) {
240			$this->applyStoredEventToProjectors(
241			$storedEvent,
242			$projectors->forEvent($storedEvent)
243			);
244
245			if ($onEventReplayed) {
246			$onEventReplayed($storedEvent);
247			}
248			});
249			});
250
251			$this->isReplaying = false;
252
253			event(new FinishedEventReplay());
254
255			$projectors->call('onFinishedEventReplay');
256			}
257
258			private function getStoredEventClass(): string
259			{
260			return $this->storedEventClass;
261			}
262			}
263

spatie / laravel-event-projector

Pull Request — master (#137)

Projectionist::__construct() A

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