JobMonitor::__construct() - Code Metrics - Inspection of "Stat page were removed temporary" - zhuravljov/yii2-queue-monitor - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — master ( b313ea...47c9db )

by Roman

created 2018-08-08 16:26 UTC

JobMonitor::__construct() A

↳ Parent: JobMonitor

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	4
rs	10
c	0
b	0
f	0
cc	1
eloc	2
nc	1
nop	2

<?php
/**
 * @link https://github.com/zhuravljov/yii2-queue-monitor
 * @copyright Copyright (c) 2017 Roman Zhuravlev
 * @license http://opensource.org/licenses/BSD-3-Clause
 */

namespace zhuravljov\yii\queue\monitor;

use Yii;
use yii\base\Behavior;
use yii\base\InvalidConfigException;
use yii\helpers\ArrayHelper;
use yii\helpers\VarDumper;
use yii\queue\ErrorEvent;
use yii\queue\ExecEvent;
use yii\queue\JobEvent;
use yii\queue\PushEvent;
use yii\queue\Queue;
use zhuravljov\yii\queue\monitor\records\ExecRecord;
use zhuravljov\yii\queue\monitor\records\PushRecord;
use zhuravljov\yii\queue\monitor\records\WorkerRecord;

/**
 * Queue Job Monitor
 *
 * @author Roman Zhuravlev <[email protected]>
 */
class JobMonitor extends Behavior
{
    /**
     * @var Queue
     * @inheritdoc
     */
    public $owner;
    /**
     * @var array
     */
    public $contextVars = ['_SERVER'];
    /**
     * @var Env
     */
    protected $env;
    /**
     * @var null|PushRecord
     */
    protected static $startedPush;

    /**
     * @param Env $env
     * @param array $config
     */
    public function __construct(Env $env, $config = [])
    {
        $this->env = $env;
        parent::__construct($config);
    }

    /**
     * @inheritdoc
     */
    public function events()
    {
        return [
            Queue::EVENT_AFTER_PUSH => 'afterPush',
            Queue::EVENT_BEFORE_EXEC => 'beforeExec',
            Queue::EVENT_AFTER_EXEC => 'afterExec',
            Queue::EVENT_AFTER_ERROR => 'afterError',
        ];
    }

    /**
     * @param PushEvent $event
     */
    public function afterPush(PushEvent $event)
    {
        $push = new PushRecord();
        $push->parent_id = static::$startedPush ? static::$startedPush->id : null;
        $push->sender_name = $this->getSenderName($event);
        $push->job_uid = $event->id;
        $push->setJob($event->job);
        $push->ttr = $event->ttr;
        $push->delay = $event->delay;
        $push->trace = (new \Exception())->getTraceAsString();
        $push->context = $this->getContext();
        $push->pushed_at = time();
        $push->save(false);
    }

    /**
     * @param ExecEvent $event
     */
    public function beforeExec(ExecEvent $event)
    {
        static::$startedPush = $push = $this->getPushRecord($event);
        if (!$push) {

            return;
        }
        if ($push->isStopped()) {
            // Rejects job execution in case is stopped
            $event->handled = true;
            return;
        }
        $this->env->db->transaction(function () use ($event, $push) {
            $worker = $this->getWorkerRecord($event);
class A
{
    function getObject()
    {
        return null;
    }

}

$a = new A();
$object = $a->getObject();

            $exec = new ExecRecord();
            $exec->push_id = $push->id;
            if ($worker) {

                $exec->worker_id = $worker->id;
            }
            $exec->attempt = $event->attempt;
            $exec->started_at = time();
            $exec->save(false);

            $push->first_exec_id = $push->first_exec_id ?: $exec->id;
            $push->last_exec_id = $exec->id;
            $push->save(false);

            if ($worker) {

                $worker->last_exec_id = $exec->id;
                $worker->save(false);
            }
        });
    }

    /**
     * @param ExecEvent $event
     */
    public function afterExec(ExecEvent $event)
    {
        $push = static::$startedPush ?: $this->getPushRecord($event);
        if (!$push) {

            return;
        }
        if ($push->last_exec_id) {
0   == false // true
0   == null  // true
123 == false // false
123 == null  // false

// It is often better to use strict comparison
0 === false // false
0 === null  // false
            ExecRecord::updateAll([
                'finished_at' => time(),
                'memory_usage' => memory_get_peak_usage(),
                'error' => null,
                'retry' => false,
            ], [
                'id' => $push->last_exec_id
            ]);
        }
    }

    /**
     * @param ErrorEvent $event
     */
    public function afterError(ErrorEvent $event)
    {
        $push = static::$startedPush ?: $this->getPushRecord($event);
        if (!$push) {

            return;
        }
        if ($push->isStopped()) {
            // Breaks retry in case is stopped
            $event->retry = false;
        }
        if ($push->last_exec_id) {
0   == false // true
0   == null  // true
123 == false // false
123 == null  // false

// It is often better to use strict comparison
0 === false // false
0 === null  // false
            ExecRecord::updateAll([
                'finished_at' => time(),
                'memory_usage' => static::$startedPush ? memory_get_peak_usage() : null,
                'error' => $event->error,
                'retry' => $event->retry,
            ], [
                'id' => $push->last_exec_id
            ]);
        }
    }

    /**
     * @param JobEvent $event
     * @throws
     * @return string
     */
    protected function getSenderName($event)
    {
        foreach (Yii::$app->getComponents(false) as $id => $component) {
            if ($component === $event->sender) {
                return $id;
            }
        }
        throw new InvalidConfigException('Queue must be an application component.');
    }

    /**
     * @return string
     */
    protected function getContext()
    {
        $context = ArrayHelper::filter($GLOBALS, $this->contextVars);
        $result = [];
        foreach ($context as $key => $value) {
            $result[] = "\${$key} = " . VarDumper::dumpAsString($value);
        }

        return implode("\n\n", $result);
    }

    /**
     * @param JobEvent $event
     * @return PushRecord
     */
    protected function getPushRecord(JobEvent $event)
    {
        if ($event->id !== null) {
            return $this->env->db->useMaster(function () use ($event) {
                return PushRecord::find()
                    ->byJob($this->getSenderName($event), $event->id)
                    ->one();
            });
        } else {
            return null;
        }
    }

    /**
     * @param ExecEvent $event
     * @return WorkerRecord|null
     */
    protected function getWorkerRecord(ExecEvent $event)
    {
        if ($event->sender->getWorkerPid() === null) {
class A
{
    function getObject()
    {
        return null;
    }

}

$a = new A();
if ($a->getObject()) {
            return null;
        }
        if (!$this->isWorkerMonitored()) {
            return null;
        }

        return $this->env->db->useMaster(function () use ($event) {
            return WorkerRecord::find()
                ->byEvent($this->env->getHost(), $event->sender->getWorkerPid())
                ->active()
                ->one();
        });
    }

    /**
     * @return bool whether workers are monitored.
     */
    private function isWorkerMonitored()
    {
        foreach ($this->owner->getBehaviors() as $behavior) {
            if ($behavior instanceof WorkerMonitor) {
                return true;
            }
        }
        return false;
    }
}


1			<?php
2			/**
3			* @link https://github.com/zhuravljov/yii2-queue-monitor
4			* @copyright Copyright (c) 2017 Roman Zhuravlev
5			* @license http://opensource.org/licenses/BSD-3-Clause
6			*/
7
8			namespace zhuravljov\yii\queue\monitor;
9
10			use Yii;
11			use yii\base\Behavior;
12			use yii\base\InvalidConfigException;
13			use yii\helpers\ArrayHelper;
14			use yii\helpers\VarDumper;
15			use yii\queue\ErrorEvent;
16			use yii\queue\ExecEvent;
17			use yii\queue\JobEvent;
18			use yii\queue\PushEvent;
19			use yii\queue\Queue;
20			use zhuravljov\yii\queue\monitor\records\ExecRecord;
21			use zhuravljov\yii\queue\monitor\records\PushRecord;
22			use zhuravljov\yii\queue\monitor\records\WorkerRecord;
23
24			/**
25			* Queue Job Monitor
26			*
27			* @author Roman Zhuravlev <[email protected]>
28			*/
29			class JobMonitor extends Behavior
30			{
31			/**
32			* @var Queue
33			* @inheritdoc
34			*/
35			public $owner;
36			/**
37			* @var array
38			*/
39			public $contextVars = ['_SERVER'];
40			/**
41			* @var Env
42			*/
43			protected $env;
44			/**
45			* @var null\|PushRecord
46			*/
47			protected static $startedPush;
48
49			/**
50			* @param Env $env
51			* @param array $config
52			*/
53			public function __construct(Env $env, $config = [])
54			{
55			$this->env = $env;
56			parent::__construct($config);
57			}
58
59			/**
60			* @inheritdoc
61			*/
62			public function events()
63			{
64			return [
65			Queue::EVENT_AFTER_PUSH => 'afterPush',
66			Queue::EVENT_BEFORE_EXEC => 'beforeExec',
67			Queue::EVENT_AFTER_EXEC => 'afterExec',
68			Queue::EVENT_AFTER_ERROR => 'afterError',
69			];
70			}
71
72			/**
73			* @param PushEvent $event
74			*/
75			public function afterPush(PushEvent $event)
76			{
77			$push = new PushRecord();
78			$push->parent_id = static::$startedPush ? static::$startedPush->id : null;
79			$push->sender_name = $this->getSenderName($event);
80			$push->job_uid = $event->id;
81			$push->setJob($event->job);
82			$push->ttr = $event->ttr;
83			$push->delay = $event->delay;
84			$push->trace = (new \Exception())->getTraceAsString();
85			$push->context = $this->getContext();
86			$push->pushed_at = time();
87			$push->save(false);
88			}
89
90			/**
91			* @param ExecEvent $event
92			*/
93			public function beforeExec(ExecEvent $event)
94			{
95			static::$startedPush = $push = $this->getPushRecord($event);
96			if (!$push) {
			0 ignored issues – show introduced 2018-04-08 21:44 UTC by Report Bug Copy Issue Report `$push` is of type `zhuravljov\yii\queue\monitor\records\PushRecord`, thus it always evaluated to `true`. Loading history...
97			return;
98			}
99			if ($push->isStopped()) {
100			// Rejects job execution in case is stopped
101			$event->handled = true;
102			return;
103			}
104			$this->env->db->transaction(function () use ($event, $push) {
105			$worker = $this->getWorkerRecord($event);
			0 ignored issues – show Bug introduced 2018-03-04 16:40 UTC by Report Bug Copy Issue Report Are you sure the assignment to `$worker` is correct as `$this->getWorkerRecord($event)` targeting `zhuravljov\yii\queue\mon...itor::getWorkerRecord()` seems to always return null. This check looks for function or method calls that always return null and whose return value is assigned to a variable. class A { function getObject() { return null; } } $a = new A(); $object = $a->getObject(); The method `getObject()` can return nothing but null, so it makes no sense to assign that value to a variable. The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes. Loading history...
106
107			$exec = new ExecRecord();
108			$exec->push_id = $push->id;
109			if ($worker) {
			0 ignored issues – show introduced 2018-04-08 21:44 UTC by Report Bug Copy Issue Report `$worker` is of type `null`, thus it always evaluated to `false`. Loading history...
110			$exec->worker_id = $worker->id;
111			}
112			$exec->attempt = $event->attempt;
113			$exec->started_at = time();
114			$exec->save(false);
115
116			$push->first_exec_id = $push->first_exec_id ?: $exec->id;
117			$push->last_exec_id = $exec->id;
118			$push->save(false);
119
120			if ($worker) {
			0 ignored issues – show introduced 2018-04-08 21:44 UTC by Report Bug Copy Issue Report `$worker` is of type `null`, thus it always evaluated to `false`. Loading history...
121			$worker->last_exec_id = $exec->id;
122			$worker->save(false);
123			}
124			});
125			}
126
127			/**
128			* @param ExecEvent $event
129			*/
130			public function afterExec(ExecEvent $event)
131			{
132			$push = static::$startedPush ?: $this->getPushRecord($event);
133			if (!$push) {
			0 ignored issues – show introduced 2018-04-08 21:44 UTC by Report Bug Copy Issue Report `$push` is of type `zhuravljov\yii\queue\monitor\records\PushRecord`, thus it always evaluated to `true`. Loading history...
134			return;
135			}
136			if ($push->last_exec_id) {
			0 ignored issues – show Bug Best Practice introduced 2018-03-24 04:59 UTC by Report Bug Copy Issue Report The expression `$push->last_exec_id` of type `null\|integer` is loosely compared to `true`; this is ambiguous if the integer can be 0. You might want to explicitly use `!== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `integer` values, zero is a special case, in particular the following results might be unexpected: 0 == false // true 0 == null // true 123 == false // false 123 == null // false // It is often better to use strict comparison 0 === false // false 0 === null // false Loading history...
137			ExecRecord::updateAll([
138			'finished_at' => time(),
139			'memory_usage' => memory_get_peak_usage(),
140			'error' => null,
141			'retry' => false,
142			], [
143			'id' => $push->last_exec_id
144			]);
145			}
146			}
147
148			/**
149			* @param ErrorEvent $event
150			*/
151			public function afterError(ErrorEvent $event)
152			{
153			$push = static::$startedPush ?: $this->getPushRecord($event);
154			if (!$push) {
			0 ignored issues – show introduced 2018-04-08 21:44 UTC by Report Bug Copy Issue Report `$push` is of type `zhuravljov\yii\queue\monitor\records\PushRecord`, thus it always evaluated to `true`. Loading history...
155			return;
156			}
157			if ($push->isStopped()) {
158			// Breaks retry in case is stopped
159			$event->retry = false;
160			}
161			if ($push->last_exec_id) {
			0 ignored issues – show Bug Best Practice introduced 2018-03-24 04:59 UTC by Report Bug Copy Issue Report The expression `$push->last_exec_id` of type `null\|integer` is loosely compared to `true`; this is ambiguous if the integer can be 0. You might want to explicitly use `!== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `integer` values, zero is a special case, in particular the following results might be unexpected: 0 == false // true 0 == null // true 123 == false // false 123 == null // false // It is often better to use strict comparison 0 === false // false 0 === null // false Loading history...
162			ExecRecord::updateAll([
163			'finished_at' => time(),
164			'memory_usage' => static::$startedPush ? memory_get_peak_usage() : null,
165			'error' => $event->error,
166			'retry' => $event->retry,
167			], [
168			'id' => $push->last_exec_id
169			]);
170			}
171			}
172
173			/**
174			* @param JobEvent $event
175			* @throws
176			* @return string
177			*/
178			protected function getSenderName($event)
179			{
180			foreach (Yii::$app->getComponents(false) as $id => $component) {
181			if ($component === $event->sender) {
182			return $id;
183			}
184			}
185			throw new InvalidConfigException('Queue must be an application component.');
186			}
187
188			/**
189			* @return string
190			*/
191			protected function getContext()
192			{
193			$context = ArrayHelper::filter($GLOBALS, $this->contextVars);
194			$result = [];
195			foreach ($context as $key => $value) {
196			$result[] = "\${$key} = " . VarDumper::dumpAsString($value);
197			}
198
199			return implode("\n\n", $result);
200			}
201
202			/**
203			* @param JobEvent $event
204			* @return PushRecord
205			*/
206			protected function getPushRecord(JobEvent $event)
207			{
208			if ($event->id !== null) {
209			return $this->env->db->useMaster(function () use ($event) {
210			return PushRecord::find()
211			->byJob($this->getSenderName($event), $event->id)
212			->one();
213			});
214			} else {
215			return null;
216			}
217			}
218
219			/**
220			* @param ExecEvent $event
221			* @return WorkerRecord\|null
222			*/
223			protected function getWorkerRecord(ExecEvent $event)
224			{
225			if ($event->sender->getWorkerPid() === null) {
			0 ignored issues – show introduced 2018-03-24 04:59 UTC by Report Bug Copy Issue Report The condition `$event->sender->getWorkerPid() === null` is always `true`. Loading history... Bug introduced 2018-03-04 16:40 UTC by Report Bug Copy Issue Report Are you sure the usage of `$event->sender->getWorkerPid()` targeting `yii\queue\Queue::getWorkerPid()` seems to always return null. This check looks for function or method calls that always return null and whose return value is used. class A { function getObject() { return null; } } $a = new A(); if ($a->getObject()) { The method `getObject()` can return nothing but null, so it makes no sense to use the return value. The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes. Loading history...
226			return null;
227			}
228			if (!$this->isWorkerMonitored()) {
229			return null;
230			}
231
232			return $this->env->db->useMaster(function () use ($event) {
233			return WorkerRecord::find()
234			->byEvent($this->env->getHost(), $event->sender->getWorkerPid())
235			->active()
236			->one();
237			});
238			}
239
240			/**
241			* @return bool whether workers are monitored.
242			*/
243			private function isWorkerMonitored()
244			{
245			foreach ($this->owner->getBehaviors() as $behavior) {
246			if ($behavior instanceof WorkerMonitor) {
247			return true;
248			}
249			}
250			return false;
251			}
252			}
253

zhuravljov / yii2-queue-monitor

Push — master ( b313ea...47c9db )

JobMonitor::__construct() A

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