Cache::getJson() - Code Metrics - Inspection of "new exception, better docs" - mattmezza/cacheasy - Measure and Improve Code Quality continuously with Scrutinizer

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by Matteo

created 2018-04-03 15:32 UTC

Cache::getJson() B

↳ Parent: Cache

Complexity

Conditions	5
Paths	5

Size

Total Lines	23
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	3
CRAP Score	17.1256

Importance

Changes

Metric	Value
cc	5
eloc	14
nc	5
nop	3
dl	0
loc	23
ccs	3
cts	14
cp	0.2143
crap	17.1256
rs	8.5906
c	0
b	0
f	0

<?php
declare(strict_types=1);

namespace Cacheasy;

use Cacheasy\NotCachedException;
use Cacheasy\MissingProviderException;
use Cacheasy\StringProvider;
use Cacheasy\JsonProvider;

class Cache
{
    /**
     * The path where to save the cached things
     */
    private $path;
    // Length of time to cache a file (in seconds)
    public $ttl;

    public function __construct(string $path = null, int $ttl = 3600 * 24 * 1)
    {
        $this->path = rtrim($path ?? getenv("CACHE_PATH"), "/");
        $this->ttl = $ttl ?? getenv("CACHE_TTL");
    }

    /**
     * This methods tries to hit the cache and if the content is not present
     * or expired caches it for future usage
     *
     * @param   string  $label  The key of the resource to cache
     * @param   StringProvider  $provider   The provider for the actual content
     * @param   bool    $forceFresh     A bool indicating whether or not to force a fresh call
     *
     * @throws  MissingProviderException    Thrown when a provider needs to be called but null is passed.
     *
     * @return  string   The fetched and/or cached data
     */
    public function getString(string $label, StringProvider $provider = null, bool $forceFresh = false) : string
    {
        if ($forceFresh) {
            // skipping everything, the user requested fresh data
            // he wants to wait, we better cache the fresh data
            if (!$provider) {
                throw new MissingProviderException($label);
            }
            $data = $provider->get();
            $this->cacheString($label, $data);
            return $data;
        }
        // let's check if we've got something cached already...
        try {
            return $this->hitString($label);
        } catch (NotCachedException $e) {
            // Oooopsss... we ain't got anything, let's get the fresh data (and cache them)
            if (!$provider) {
                throw new MissingProviderException($label);
            }
            $data = $provider->get();
            $this->cacheString($label, $data);
            return $data;
        }
    }

    /**
     * This methods tries to hit the cache and if the content is not present
     * or expired caches it for future usage
     *
     * @param   string  $label  The key of the resource to cache
     * @param   JsonProvider  $provider   The provider for the actual content
     * @param   bool    $forceFresh     A bool indicating whether or not to force a fresh call
     *
     * @throws  MissingProviderException    Thrown when a provider needs to be called but null is passed.
     *
     * @return  array   The fetched and/or cached data
     */
    public function getJson(string $label, JsonProvider $provider = null, bool $forceFresh = false) : array
    {
        if ($forceFresh) {
            // skipping everything, the user requested fresh data
            // he wants to wait, we better cache the fresh data
            if (!$provider) {
                throw new MissingProviderException($label);
            }
            $data = $provider->get();
            $this->cacheJson($label, $data);
            return $data;
        }
        // let's check if we've got something cached already...
        try {
            return json_decode($this->hitString($label), true);
        } catch (NotCachedException $e) {
            // Oooopsss... we ain't got anything, let's get the fresh data (and cache them)
            if (!$provider) {
                throw new MissingProviderException($label);
            }
            $data = $provider->get();
            $this->cacheJson($label, $data);
            return $data;
        }
    }
    
    /**
     * Actually writes the content to a file
     *
     * @param   string  $label  The key of the resource to cache
     * @param   string  $data   The actual content of the resource to cache
     */
    public function cacheString(string $label, string $data) : void
    {
        $filename = $this->path . "/" . md5($label);
        if (file_exists($filename) && is_file($filename)) {
            unlink($filename);
        }
        file_put_contents($filename, $data);
    }

    /**
     * Actually writes the json content to a file
     *
     * @param   string  $label  The key of the resource to cache
     * @param   array  $data   The actual content of the resource to cache
     */
    public function cacheJson(string $label, array $data) : void
    {
        $this->cacheString($label, json_encode($data));
    }
    
    /**
     * Tries to check if the content is cached
     *
     * @param   string  $label  The key of the cached resource
     *
     * @throws  NotCachedExeption   If the requested resource is not cached.
     *
     * @return  string  The content of the cached resource
     */
    public function hitString(string $label) : string
    {
        if ($this->isCached($label)) {
            $filename = $this->path . "/" . md5($label);
            return file_get_contents($filename);
        } else {
            throw new NotCachedException($label);
        }
    }

    /**
     * Tries to check if the content is cached
     *
     * @param   string  $label  The key of the cached resource
     *
     * @throws  NotCachedExeption   If the requested resource is not cached.
     *
     * @return  array  The content of the cached resource
     */
    public function hitJson(string $label) : array
    {
        return json_decode($this->hitString($label), true);
    }
    
    /**
     * Checks if the content is cached or not
     *
     * @param   string  $label  The key of the element to cache
     *
     * @return  bool    Whether the $label resource is cached
     */
    public function isCached(string $label) : bool
    {
        $filename = $this->path . "/" . md5($label);
        if (file_exists($filename) && (filemtime($filename) + $this->ttl >= time())) {
            return true;
        }
        return false;
    }

    /**
     * Invalidates an entry by deleting the corresponding file
     *
     * @param   string  $label  The key of the element to invalidate
     *
     * @throws  NotCachedException  Thrown when the resource $label is not cached.
     */
    public function invalidate(string $label) : void
    {
        if (!$this->isCached($label)) {
            throw new NotCachedException($label);
        }
        $filename = $this->path . "/" . md5($label);
        if (file_exists($filename)) {
            unlink($filename);
        }
    }

    /**
     * Invalidates all the cache entries by deleting the corresponding files
     */
    public function invalidateAll() : void
    {
        $files = glob($this->path . "/*"); // get all file names
        foreach ($files as $file) { // iterate files
            if (is_file($file)) {
                unlink($file); // delete file
            }
        }
    }
}


1		<?php
2		declare(strict_types=1);
3
4		namespace Cacheasy;
5
6		use Cacheasy\NotCachedException;
7		use Cacheasy\MissingProviderException;
8		use Cacheasy\StringProvider;
9		use Cacheasy\JsonProvider;
10
11		class Cache
12		{
13		/**
14		* The path where to save the cached things
15		*/
16		private $path;
17		// Length of time to cache a file (in seconds)
18		public $ttl;
19
20	10	public function __construct(string $path = null, int $ttl = 3600 * 24 * 1)
21		{
22	10	$this->path = rtrim($path ?? getenv("CACHE_PATH"), "/");
23	10	$this->ttl = $ttl ?? getenv("CACHE_TTL");
24	10	}
25
26		/**
27		* This methods tries to hit the cache and if the content is not present
28		* or expired caches it for future usage
29		*
30		* @param string $label The key of the resource to cache
31		* @param StringProvider $provider The provider for the actual content
32		* @param bool $forceFresh A bool indicating whether or not to force a fresh call
33		*
34		* @throws MissingProviderException Thrown when a provider needs to be called but null is passed.
35		*
36		* @return string The fetched and/or cached data
37		*/
38	5	public function getString(string $label, StringProvider $provider = null, bool $forceFresh = false) : string
39		{
40	5	if ($forceFresh) {
41		// skipping everything, the user requested fresh data
42		// he wants to wait, we better cache the fresh data
43	1	if (!$provider) {
44		throw new MissingProviderException($label);
45		}
46	1	$data = $provider->get();
47	1	$this->cacheString($label, $data);
48	1	return $data;
49		}
50		// let's check if we've got something cached already...
51		try {
52	5	return $this->hitString($label);
53	4	} catch (NotCachedException $e) {
54		// Oooopsss... we ain't got anything, let's get the fresh data (and cache them)
55	4	if (!$provider) {
56	1	throw new MissingProviderException($label);
57		}
58	3	$data = $provider->get();
59	3	$this->cacheString($label, $data);
60	3	return $data;
61		}
62		}
63
64		/**
65		* This methods tries to hit the cache and if the content is not present
66		* or expired caches it for future usage
67		*
68		* @param string $label The key of the resource to cache
69		* @param JsonProvider $provider The provider for the actual content
70		* @param bool $forceFresh A bool indicating whether or not to force a fresh call
71		*
72		* @throws MissingProviderException Thrown when a provider needs to be called but null is passed.
73		*
74		* @return array The fetched and/or cached data
75		*/
76	1	public function getJson(string $label, JsonProvider $provider = null, bool $forceFresh = false) : array
77		{
78	1	if ($forceFresh) {
79		// skipping everything, the user requested fresh data
80		// he wants to wait, we better cache the fresh data
81		if (!$provider) {
82		throw new MissingProviderException($label);
83		}
84		$data = $provider->get();
85		$this->cacheJson($label, $data);
86		return $data;
87		}
88		// let's check if we've got something cached already...
89		try {
90	1	return json_decode($this->hitString($label), true);
91		} catch (NotCachedException $e) {
92		// Oooopsss... we ain't got anything, let's get the fresh data (and cache them)
93		if (!$provider) {
94		throw new MissingProviderException($label);
95		}
96		$data = $provider->get();
97		$this->cacheJson($label, $data);
98		return $data;
99		}
100		}
101
102		/**
103		* Actually writes the content to a file
104		*
105		* @param string $label The key of the resource to cache
106		* @param string $data The actual content of the resource to cache
107		*/
108	4	public function cacheString(string $label, string $data) : void
109		{
110	4	$filename = $this->path . "/" . md5($label);
111	4	if (file_exists($filename) && is_file($filename)) {
112	2	unlink($filename);
113		}
114	4	file_put_contents($filename, $data);
115	4	}
116
117		/**
118		* Actually writes the json content to a file
119		*
120		* @param string $label The key of the resource to cache
121		* @param array $data The actual content of the resource to cache
122		*/
123	1	public function cacheJson(string $label, array $data) : void
124		{
125	1	$this->cacheString($label, json_encode($data));
126	1	}
127
128		/**
129		* Tries to check if the content is cached
130		*
131		* @param string $label The key of the cached resource
132		*
133		* @throws NotCachedExeption If the requested resource is not cached.
134		*
135		* @return string The content of the cached resource
136		*/
137	6	public function hitString(string $label) : string
138		{
139	6	if ($this->isCached($label)) {
140	3	$filename = $this->path . "/" . md5($label);
141	3	return file_get_contents($filename);
142		} else {
143	5	throw new NotCachedException($label);
144		}
145		}
146
147		/**
148		* Tries to check if the content is cached
149		*
150		* @param string $label The key of the cached resource
151		*
152		* @throws NotCachedExeption If the requested resource is not cached.
153		*
154		* @return array The content of the cached resource
155		*/
156		public function hitJson(string $label) : array
157		{
158		return json_decode($this->hitString($label), true);
159		}
160
161		/**
162		* Checks if the content is cached or not
163		*
164		* @param string $label The key of the element to cache
165		*
166		* @return bool Whether the $label resource is cached
167		*/
168	9	public function isCached(string $label) : bool
169		{
170	9	$filename = $this->path . "/" . md5($label);
171	9	if (file_exists($filename) && (filemtime($filename) + $this->ttl >= time())) {
172	5	return true;
173		}
174	8	return false;
175		}
176
177		/**
178		* Invalidates an entry by deleting the corresponding file
179		*
180		* @param string $label The key of the element to invalidate
181		*
182		* @throws NotCachedException Thrown when the resource $label is not cached.
183		*/
184	2	public function invalidate(string $label) : void
185		{
186	2	if (!$this->isCached($label)) {
187	1	throw new NotCachedException($label);
188		}
189	1	$filename = $this->path . "/" . md5($label);
190	1	if (file_exists($filename)) {
191	1	unlink($filename);
192		}
193	1	}
194
195		/**
196		* Invalidates all the cache entries by deleting the corresponding files
197		*/
198	1	public function invalidateAll() : void
199		{
200	1	$files = glob($this->path . "/*"); // get all file names
201	1	foreach ($files as $file) { // iterate files
202	1	if (is_file($file)) {
203	1	unlink($file); // delete file
204		}
205		}
206	1	}
207		}
208

mattmezza / cacheasy

Push — master ( d1842b...7cb61a )

Cache::getJson() B

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