PersistenceLogger::__construct() - Code Metrics - Inspection of "Fisnih PersistenceLogger work for web debug toolba..." - ezsystems/ezpublish-kernel - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — in-memory-cache2 ( 6ce751...080bd3 )

by André

created 2019-03-04 09:35 UTC

PersistenceLogger::__construct() A

↳ Parent: PersistenceLogger

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

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

<?php

/**
 * File containing the Persistence Cache SPI logger class.
 *
 * @copyright Copyright (C) eZ Systems AS. All rights reserved.
 * @license For full copyright and license information view LICENSE file distributed with this source code.
 */
declare(strict_types=1);

namespace eZ\Publish\Core\Persistence\Cache;

/**
 * Log un-cached & cached use of SPI Persistence.
 */
class PersistenceLogger
{
    const NAME = 'PersistenceLogger';

    /**
     * @var int[]
     */
    protected $stats = [
        'calls' => 0,
        'misses' => 0,
        'hits' => 0,
        'memory' => 0,
    ];

    /**
     * @var bool
     */
    protected $logCalls = true;

    /**
     * @var array
     */
    protected $calls = [];

    /**
     * @var array
     */
    protected $cached = [];

    /**
     * @var array
     */
    protected $unCachedHandlers = [];

    /**
     * @param bool $logCalls Flag to enable logging of calls or not, provides extra debug info about calls made to SPI
     *                       level, including where they come form. However this uses quite a bit of memory.
     */
    public function __construct(bool $logCalls = true)
    {
        $this->logCalls = $logCalls;
    }

    /**
     * Log uncached SPI calls with method name and arguments.
     *
     * NOTE: As of 7.5 this method is meant for logging calls to uncached spi method calls,
     *       for cache miss calls to cached SPI methods migrate to use {@see logCacheMiss()}.
     *
     * @param string $method
     * @param array $arguments
     */
    public function logCall(string $method, array $arguments = []): void
    {
        $this->stats['calls']++;
        if (!$this->logCalls) {
            return;
        }

        $this->calls[] = $this->getCacheCallData(
            $method,
            $arguments,
            \array_slice(
                \debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 7),
                2
            )
        );
    }

    /**
     * Log Cache miss, gets info it needs by backtrace if needed.
     *
     * @since 7.5
     *
     * @param array $arguments
     * @param int $traceOffset
     */
    public function logCacheMiss(array $arguments = [], int $traceOffset = 2): void
    {
        $this->stats['misses']++;
        if (!$this->logCalls) {
            return;
        }

        $trace = \debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 7);
        $this->cached[] = $this->getCacheCallData(
            $trace[$traceOffset -1]['function'],
            $arguments,
            \array_slice($trace, $traceOffset),
            false
        );
    }

    /**
     * Log a Cache hit, gets info it needs by backtrace if needed.
     *
     * @since 7.5
     *
     * @param array $arguments
     * @param int $traceOffset
     * @param bool $inMemory Denotes is cache hit was from memory (php variable), as opposed to from cache pool which
     *                       is usually disk or remote cache service.
     */
    public function logCacheHit(array $arguments = [], int $traceOffset = 2, bool $inMemory = false): void
    {
        if ($inMemory) {
            $this->stats['memory']++;
            return;
        }

        $this->stats['hits']++;
        if (!$this->logCalls) {
            return;
        }

        // @todo Check memory usage
        $trace = \debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 7);
        $this->cached[] = $this->getCacheCallData(
            $trace[$traceOffset -1]['class'] . '::' . $trace[$traceOffset -1]['function'],
            $arguments,
            \array_slice($trace, $traceOffset),
            true
        );
    }

    private function getCacheCallData($method, array $arguments, array $trimmedBacktrace, bool $hit = false): array
    {
        $callData = [
            'method' => $method,
            'arguments' => $arguments,
            'trace' => $this->getSimpleCallTrace($trimmedBacktrace),
            'hit' => $hit,
        ];

        return $callData;
    }

    private function getSimpleCallTrace(array $backtrace): array
    {
        $calls = [];
        foreach ($backtrace as $call) {
            if (!isset($call['class']) || strpos($call['class'], '\\') === false) {
                // skip if class has no namespace (Symfony lazy proxy or plain function)
                continue;
            }

            $calls[] = $call['class'] . $call['type'] . $call['function'] . '()';

            // Break out as soon as we have listed 1 class outside of kernel
            if (strpos($call['class'], 'eZ\\Publish\\Core\\') !== 0) {
                break;
            }
        }

        return $calls;
    }

    /**
     * Log un-cached handler being loaded.
     *
     * @param string $handler
     */
    public function logUnCachedHandler(string $handler): void
    {
        if (!isset($this->unCachedHandlers[$handler])) {
            $this->unCachedHandlers[$handler] = 0;
        }
        ++$this->unCachedHandlers[$handler];
    }

    public function getName(): string
    {
        return self::NAME;
    }

    /**
     * Counts the total of spi calls (cache misses and uncached calls)
     *
     * @deprecated Since 7.5, use getStats().
     */
    public function getCount(): int
    {
        return $this->stats['calls'];
    }

    /**
     * Get stats (calls/misses/hits/memory).
     *
     * @since 7.5
     */
    public function getStats(): array
    {
        return $this->stats;
    }

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

    public function getCalls(): array
    {
        return $this->calls;
    }

    public function getCached(): array
    {
        return $this->cached;
    }

    public function getLoadedUnCachedHandlers(): array
    {
        return $this->unCachedHandlers;
    }
}


1			<?php
2
3			/**
4			* File containing the Persistence Cache SPI logger class.
5			*
6			* @copyright Copyright (C) eZ Systems AS. All rights reserved.
7			* @license For full copyright and license information view LICENSE file distributed with this source code.
8			*/
9			declare(strict_types=1);
10
11			namespace eZ\Publish\Core\Persistence\Cache;
12
13			/**
14			* Log un-cached & cached use of SPI Persistence.
15			*/
16			class PersistenceLogger
17			{
18			const NAME = 'PersistenceLogger';
19
20			/**
21			* @var int[]
22			*/
23			protected $stats = [
24			'calls' => 0,
25			'misses' => 0,
26			'hits' => 0,
27			'memory' => 0,
28			];
29
30			/**
31			* @var bool
32			*/
33			protected $logCalls = true;
34
35			/**
36			* @var array
37			*/
38			protected $calls = [];
39
40			/**
41			* @var array
42			*/
43			protected $cached = [];
44
45			/**
46			* @var array
47			*/
48			protected $unCachedHandlers = [];
49
50			/**
51			* @param bool $logCalls Flag to enable logging of calls or not, provides extra debug info about calls made to SPI
52			* level, including where they come form. However this uses quite a bit of memory.
53			*/
54			public function __construct(bool $logCalls = true)
55			{
56			$this->logCalls = $logCalls;
57			}
58
59			/**
60			* Log uncached SPI calls with method name and arguments.
61			*
62			* NOTE: As of 7.5 this method is meant for logging calls to uncached spi method calls,
63			* for cache miss calls to cached SPI methods migrate to use {@see logCacheMiss()}.
64			*
65			* @param string $method
66			* @param array $arguments
67			*/
68			public function logCall(string $method, array $arguments = []): void
69			{
70			$this->stats['calls']++;
71			if (!$this->logCalls) {
72			return;
73			}
74
75			$this->calls[] = $this->getCacheCallData(
76			$method,
77			$arguments,
78			\array_slice(
79			\debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 7),
80			2
81			)
82			);
83			}
84
85			/**
86			* Log Cache miss, gets info it needs by backtrace if needed.
87			*
88			* @since 7.5
89			*
90			* @param array $arguments
91			* @param int $traceOffset
92			*/
93			public function logCacheMiss(array $arguments = [], int $traceOffset = 2): void
94			{
95			$this->stats['misses']++;
96			if (!$this->logCalls) {
97			return;
98			}
99
100			$trace = \debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 7);
101			$this->cached[] = $this->getCacheCallData(
102			$trace[$traceOffset -1]['function'],
103			$arguments,
104			\array_slice($trace, $traceOffset),
105			false
106			);
107			}
108
109			/**
110			* Log a Cache hit, gets info it needs by backtrace if needed.
111			*
112			* @since 7.5
113			*
114			* @param array $arguments
115			* @param int $traceOffset
116			* @param bool $inMemory Denotes is cache hit was from memory (php variable), as opposed to from cache pool which
117			* is usually disk or remote cache service.
118			*/
119			public function logCacheHit(array $arguments = [], int $traceOffset = 2, bool $inMemory = false): void
120			{
121			if ($inMemory) {
122			$this->stats['memory']++;
123			return;
124			}
125
126			$this->stats['hits']++;
127			if (!$this->logCalls) {
128			return;
129			}
130
131			// @todo Check memory usage
132			$trace = \debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 7);
133			$this->cached[] = $this->getCacheCallData(
134			$trace[$traceOffset -1]['class'] . '::' . $trace[$traceOffset -1]['function'],
135			$arguments,
136			\array_slice($trace, $traceOffset),
137			true
138			);
139			}
140
141			private function getCacheCallData($method, array $arguments, array $trimmedBacktrace, bool $hit = false): array
142			{
143			$callData = [
144			'method' => $method,
145			'arguments' => $arguments,
146			'trace' => $this->getSimpleCallTrace($trimmedBacktrace),
147			'hit' => $hit,
148			];
149
150			return $callData;
151			}
152
153			private function getSimpleCallTrace(array $backtrace): array
154			{
155			$calls = [];
156			foreach ($backtrace as $call) {
157			if (!isset($call['class']) \|\| strpos($call['class'], '\\') === false) {
158			// skip if class has no namespace (Symfony lazy proxy or plain function)
159			continue;
160			}
161
162			$calls[] = $call['class'] . $call['type'] . $call['function'] . '()';
163
164			// Break out as soon as we have listed 1 class outside of kernel
165			if (strpos($call['class'], 'eZ\\Publish\\Core\\') !== 0) {
166			break;
167			}
168			}
169
170			return $calls;
171			}
172
173			/**
174			* Log un-cached handler being loaded.
175			*
176			* @param string $handler
177			*/
178			public function logUnCachedHandler(string $handler): void
179			{
180			if (!isset($this->unCachedHandlers[$handler])) {
181			$this->unCachedHandlers[$handler] = 0;
182			}
183			++$this->unCachedHandlers[$handler];
184			}
185
186			public function getName(): string
187			{
188			return self::NAME;
189			}
190
191			/**
192			* Counts the total of spi calls (cache misses and uncached calls)
193			*
194			* @deprecated Since 7.5, use getStats().
195			*/
196			public function getCount(): int
197			{
198			return $this->stats['calls'];
199			}
200
201			/**
202			* Get stats (calls/misses/hits/memory).
203			*
204			* @since 7.5
205			*/
206			public function getStats(): array
207			{
208			return $this->stats;
209			}
210
211			public function isCallsLoggingEnabled(): bool
212			{
213			return $this->logCalls;
214			}
215
216			public function getCalls(): array
217			{
218			return $this->calls;
219			}
220
221			public function getCached(): array
222			{
223			return $this->cached;
224			}
225
226			public function getLoadedUnCachedHandlers(): array
227			{
228			return $this->unCachedHandlers;
229			}
230			}
231

ezsystems / ezpublish-kernel

Push — in-memory-cache2 ( 6ce751...080bd3 )

PersistenceLogger::__construct() A

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