├── .coveralls.yml
├── .travis.yml
├── LICENSE.md
├── README.md
├── composer.json
├── composer.lock
├── logo.png
├── phpunit.xml
├── src
    ├── Backtrace.php
    ├── Bucket.php
    ├── Exceptions
    │   └── NotIterableException.php
    ├── Iterator.php
    ├── MethodThrottler.php
    ├── Throttler.php
    └── functions.php
└── tests
    ├── BucketTest.php
    ├── IteratorCountingTest.php
    ├── IteratorTest.php
    ├── MethodThrottlerTest.php
    ├── ThrottlerTest.php
    └── helpers
        ├── IterableCountableClass.php
        ├── IterableNotCountableClass.php
        └── MockQueryBuilder.php


/.coveralls.yml:
--------------------------------------------------------------------------------
1 | coverage_clover: build/logs/clover.xml
2 | json_path: build/logs/coveralls-upload.json
3 | service_name: travis-ci


--------------------------------------------------------------------------------
/.travis.yml:
--------------------------------------------------------------------------------
 1 | language: php
 2 | 
 3 | php:
 4 |   - 7.3
 5 | 
 6 | before_script:
 7 |   - mkdir -p build/logs
 8 |   - composer self-update
 9 |   - composer install --prefer-source --no-interaction --dev
10 | 
11 | script:
12 | - vendor/bin/phpunit --coverage-clover build/logs/clover.xml
13 | 
14 | after_script:
15 | - php vendor/bin/coveralls -v
16 | 
17 | after_success:
18 |   - sh -c 'if [ "$TRAVIS_PHP_VERSION" != "hhvm" ]; then php vendor/bin/coveralls -v; fi;'


--------------------------------------------------------------------------------
/LICENSE.md:
--------------------------------------------------------------------------------
 1 | # The MIT License (MIT)
 2 | 
 3 | Copyright (c) Rackbeat & Lasse Rafn <lra@rackbeat.com>
 4 | 
 5 | > Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | > of this software and associated documentation files (the "Software"), to deal
 7 | > in the Software without restriction, including without limitation the rights
 8 | > to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | > copies of the Software, and to permit persons to whom the Software is
10 | > furnished to do so, subject to the following conditions:
11 | >
12 | > The above copyright notice and this permission notice shall be included in
13 | > all copies or substantial portions of the Software.
14 | >
15 | > THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | > IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | > FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | > AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | > LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | > OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
21 | > THE SOFTWARE.
22 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | <p align="center" style="text-align: center">
 2 | <img src="logo.png" alt="Rackbeat throttler" height="100" />
 3 | <br/>Throttle PHP actions to only run a set amount of times within a given timeframe.
 4 | <br/>Especially useful to avoid rate limiting, high CPU usage or DOS'ing your own services (database etc.)
 5 | </p>
 6 |     
 7 | <p align="center" style="text-align: center"> 
 8 | <a href="https://travis-ci.org/Rackbeat/php-throttler"><img src="https://img.shields.io/travis/Rackbeat/php-throttler.svg?style=flat-square" alt="Build Status"></a>
 9 | <a href="https://coveralls.io/github/Rackbeat/php-throttler"><img src="https://img.shields.io/coveralls/Rackbeat/php-throttler.svg?style=flat-square" alt="Coverage"></a>
10 | <a href="https://packagist.org/packages/rackbeat/php-throttler"><img src="https://img.shields.io/packagist/dt/rackbeat/php-throttler.svg?style=flat-square" alt="Total Downloads"></a>
11 | <a href="https://packagist.org/packages/rackbeat/php-throttler"><img src="https://img.shields.io/packagist/v/rackbeat/php-throttler.svg?style=flat-square" alt="Latest Stable Version"></a>
12 | <a href="https://packagist.org/packages/rackbeat/php-throttler"><img src="https://img.shields.io/packagist/l/rackbeat/php-throttler.svg?style=flat-square" alt="License"></a>
13 | </p>
14 | 
15 | ## Installation
16 | 
17 | You just require using composer and you're good to go! 
18 | 
19 | ```bash
20 | composer require rackbeat/php-throttler
21 | ```
22 | 
23 | ## Usage
24 | 
25 | ### Basic example
26 | 
27 | ```php
28 | use Rackbeat\Throttler\Throttler;
29 | 
30 | Throttler::make( range(1,100) )->allow(10)->every(1)->run( function($value, $key) {
31 |     // do something with $value
32 | } );
33 | ```
34 | 
35 | ## Requirements
36 | * PHP >= 7.3
37 | 


--------------------------------------------------------------------------------
/composer.json:
--------------------------------------------------------------------------------
 1 | {
 2 | 	"name": "rackbeat/php-throttler",
 3 | 	"description": "Throttle PHP function calls and iteration runs by X executions per second.",
 4 | 	"keywords": [
 5 | 		"laravel",
 6 | 		"php",
 7 | 		"throttle",
 8 | 		"rate-limit"
 9 | 	],
10 | 	"type": "library",
11 | 	"license": "MIT",
12 | 	"authors": [
13 | 		{
14 | 			"name": "Lasse Rafn",
15 | 			"email": "lasserafn@gmail.com"
16 | 		},
17 | 		{
18 | 			"name": "Rackbeat",
19 | 			"email": "open-source@rackbeat.com"
20 | 		}
21 | 	],
22 | 	"require": {
23 | 		"php": ">=7.3"
24 | 	},
25 | 	"require-dev": {
26 | 		"phpunit/phpunit": "^7.0",
27 | 		"php-coveralls/php-coveralls": "^1.0"
28 | 	},
29 | 	"autoload": {
30 | 		"files": [
31 | 			"src/functions.php"
32 | 		],
33 | 		"psr-4": {
34 | 			"Rackbeat\\Throttler\\": "src/"
35 | 		}
36 | 	},
37 | 	"autoload-dev": {
38 | 		"psr-4": {
39 | 			"Throttler\\Tests\\": "tests/"
40 | 		}
41 | 	},
42 | 	"config": {
43 | 		"sort-packages": true
44 | 	}
45 | }
46 | 


--------------------------------------------------------------------------------
/composer.lock:
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   1 | {
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 405 |             "license": [
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 408 |             "authors": [
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 410 |                     "name": "Jaap van Otterdijk",
 411 |                     "email": "opensource@ijaap.nl"
 412 |                 }
 413 |             ],
 414 |             "description": "Common reflection classes used by phpdocumentor to reflect the code structure",
 415 |             "homepage": "http://www.phpdoc.org",
 416 |             "keywords": [
 417 |                 "FQSEN",
 418 |                 "phpDocumentor",
 419 |                 "phpdoc",
 420 |                 "reflection",
 421 |                 "static analysis"
 422 |             ],
 423 |             "time": "2018-08-07T13:53:10+00:00"
 424 |         },
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 427 |             "version": "4.3.2",
 428 |             "source": {
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1840 |                     "email": "fabien@symfony.com"
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1843 |                     "name": "Symfony Community",
1844 |                     "homepage": "https://symfony.com/contributors"
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1847 |             "description": "Symfony EventDispatcher Component",
1848 |             "homepage": "https://symfony.com",
1849 |             "time": "2018-11-21T14:20:20+00:00"
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1885 |                 "MIT"
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1890 |                     "email": "fabien@symfony.com"
1891 |                 },
1892 |                 {
1893 |                     "name": "Symfony Community",
1894 |                     "homepage": "https://symfony.com/contributors"
1895 |                 }
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1897 |             "description": "Symfony Filesystem Component",
1898 |             "homepage": "https://symfony.com",
1899 |             "time": "2019-11-18T17:27:11+00:00"
1900 |         },
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1920 |             },
1921 |             "type": "library",
1922 |             "extra": {
1923 |                 "branch-alias": {
1924 |                     "dev-master": "1.12-dev"
1925 |                 }
1926 |             },
1927 |             "autoload": {
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1929 |                     "Symfony\\Polyfill\\Ctype\\": ""
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1936 |             "license": [
1937 |                 "MIT"
1938 |             ],
1939 |             "authors": [
1940 |                 {
1941 |                     "name": "Gert de Pagter",
1942 |                     "email": "BackEndTea@gmail.com"
1943 |                 },
1944 |                 {
1945 |                     "name": "Symfony Community",
1946 |                     "homepage": "https://symfony.com/contributors"
1947 |                 }
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1949 |             "description": "Symfony polyfill for ctype functions",
1950 |             "homepage": "https://symfony.com",
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1953 |                 "ctype",
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1955 |                 "portable"
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1957 |             "time": "2019-08-06T08:03:45+00:00"
1958 |         },
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1964 |                 "url": "https://github.com/symfony/polyfill-mbstring.git",
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1980 |             "extra": {
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1995 |                 "MIT"
1996 |             ],
1997 |             "authors": [
1998 |                 {
1999 |                     "name": "Nicolas Grekas",
2000 |                     "email": "p@tchwork.com"
2001 |                 },
2002 |                 {
2003 |                     "name": "Symfony Community",
2004 |                     "homepage": "https://symfony.com/contributors"
2005 |                 }
2006 |             ],
2007 |             "description": "Symfony polyfill for the Mbstring extension",
2008 |             "homepage": "https://symfony.com",
2009 |             "keywords": [
2010 |                 "compatibility",
2011 |                 "mbstring",
2012 |                 "polyfill",
2013 |                 "portable",
2014 |                 "shim"
2015 |             ],
2016 |             "time": "2019-08-06T08:03:45+00:00"
2017 |         },
2018 |         {
2019 |             "name": "symfony/service-contracts",
2020 |             "version": "v2.0.0",
2021 |             "source": {
2022 |                 "type": "git",
2023 |                 "url": "https://github.com/symfony/service-contracts.git",
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2056 |                     "name": "Nicolas Grekas",
2057 |                     "email": "p@tchwork.com"
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2059 |                 {
2060 |                     "name": "Symfony Community",
2061 |                     "homepage": "https://symfony.com/contributors"
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2064 |             "description": "Generic abstractions related to writing services",
2065 |             "homepage": "https://symfony.com",
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2068 |                 "contracts",
2069 |                 "decoupling",
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2080 |                 "type": "git",
2081 |                 "url": "https://github.com/symfony/stopwatch.git",
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2100 |             "autoload": {
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2102 |                     "Symfony\\Component\\Stopwatch\\": ""
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2110 |                 "MIT"
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2114 |                     "name": "Fabien Potencier",
2115 |                     "email": "fabien@symfony.com"
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2118 |                     "name": "Symfony Community",
2119 |                     "homepage": "https://symfony.com/contributors"
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2123 |             "homepage": "https://symfony.com",
2124 |             "time": "2019-11-05T16:11:08+00:00"
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2169 |                 "MIT"
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2177 |                     "name": "Symfony Community",
2178 |                     "homepage": "https://symfony.com/contributors"
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2181 |             "description": "Symfony Yaml Component",
2182 |             "homepage": "https://symfony.com",
2183 |             "time": "2019-11-12T14:51:11+00:00"
2184 |         },
2185 |         {
2186 |             "name": "theseer/tokenizer",
2187 |             "version": "1.1.3",
2188 |             "source": {
2189 |                 "type": "git",
2190 |                 "url": "https://github.com/theseer/tokenizer.git",
2191 |                 "reference": "11336f6f84e16a720dae9d8e6ed5019efa85a0f9"
2192 |             },
2193 |             "dist": {
2194 |                 "type": "zip",
2195 |                 "url": "https://api.github.com/repos/theseer/tokenizer/zipball/11336f6f84e16a720dae9d8e6ed5019efa85a0f9",
2196 |                 "reference": "11336f6f84e16a720dae9d8e6ed5019efa85a0f9",
2197 |                 "shasum": ""
2198 |             },
2199 |             "require": {
2200 |                 "ext-dom": "*",
2201 |                 "ext-tokenizer": "*",
2202 |                 "ext-xmlwriter": "*",
2203 |                 "php": "^7.0"
2204 |             },
2205 |             "type": "library",
2206 |             "autoload": {
2207 |                 "classmap": [
2208 |                     "src/"
2209 |                 ]
2210 |             },
2211 |             "notification-url": "https://packagist.org/downloads/",
2212 |             "license": [
2213 |                 "BSD-3-Clause"
2214 |             ],
2215 |             "authors": [
2216 |                 {
2217 |                     "name": "Arne Blankerts",
2218 |                     "email": "arne@blankerts.de",
2219 |                     "role": "Developer"
2220 |                 }
2221 |             ],
2222 |             "description": "A small library for converting tokenized PHP source code into XML and potentially other formats",
2223 |             "time": "2019-06-13T22:48:21+00:00"
2224 |         },
2225 |         {
2226 |             "name": "webmozart/assert",
2227 |             "version": "1.6.0",
2228 |             "source": {
2229 |                 "type": "git",
2230 |                 "url": "https://github.com/webmozart/assert.git",
2231 |                 "reference": "573381c0a64f155a0d9a23f4b0c797194805b925"
2232 |             },
2233 |             "dist": {
2234 |                 "type": "zip",
2235 |                 "url": "https://api.github.com/repos/webmozart/assert/zipball/573381c0a64f155a0d9a23f4b0c797194805b925",
2236 |                 "reference": "573381c0a64f155a0d9a23f4b0c797194805b925",
2237 |                 "shasum": ""
2238 |             },
2239 |             "require": {
2240 |                 "php": "^5.3.3 || ^7.0",
2241 |                 "symfony/polyfill-ctype": "^1.8"
2242 |             },
2243 |             "conflict": {
2244 |                 "vimeo/psalm": "<3.6.0"
2245 |             },
2246 |             "require-dev": {
2247 |                 "phpunit/phpunit": "^4.8.36 || ^7.5.13"
2248 |             },
2249 |             "type": "library",
2250 |             "autoload": {
2251 |                 "psr-4": {
2252 |                     "Webmozart\\Assert\\": "src/"
2253 |                 }
2254 |             },
2255 |             "notification-url": "https://packagist.org/downloads/",
2256 |             "license": [
2257 |                 "MIT"
2258 |             ],
2259 |             "authors": [
2260 |                 {
2261 |                     "name": "Bernhard Schussek",
2262 |                     "email": "bschussek@gmail.com"
2263 |                 }
2264 |             ],
2265 |             "description": "Assertions to validate method input/output with nice error messages.",
2266 |             "keywords": [
2267 |                 "assert",
2268 |                 "check",
2269 |                 "validate"
2270 |             ],
2271 |             "time": "2019-11-24T13:36:37+00:00"
2272 |         }
2273 |     ],
2274 |     "aliases": [],
2275 |     "minimum-stability": "stable",
2276 |     "stability-flags": [],
2277 |     "prefer-stable": false,
2278 |     "prefer-lowest": false,
2279 |     "platform": {
2280 |         "php": ">=7.3"
2281 |     },
2282 |     "platform-dev": []
2283 | }
2284 | 


--------------------------------------------------------------------------------
/logo.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/Rackbeat/php-throttler/54e5669d18f0bef93577184a12a39d1a121c92f1/logo.png


--------------------------------------------------------------------------------
/phpunit.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <phpunit backupGlobals="false"
 3 | 		 backupStaticAttributes="false"
 4 | 		 bootstrap="vendor/autoload.php"
 5 | 		 colors="true"
 6 | 		 convertErrorsToExceptions="true"
 7 | 		 convertNoticesToExceptions="true"
 8 | 		 convertWarningsToExceptions="true"
 9 | 		 processIsolation="false"
10 | 		 stopOnFailure="false">
11 | 	<testsuites>
12 | 		<testsuite name="Package Test Suite">
13 | 			<directory suffix=".php">./tests/</directory>
14 | 		</testsuite>
15 | 	</testsuites>
16 | 
17 | 	<filter>
18 | 		<whitelist processUncoveredFilesFromWhitelist="true">
19 | 			<directory>./src</directory>
20 | 			<exclude>
21 | 				<directory>./vendor</directory>
22 | 				<directory>./tests</directory>
23 | 			</exclude>
24 | 		</whitelist>
25 | 	</filter>
26 | 
27 | 	<logging>
28 | 		<log type="coverage-clover" target="build/logs/clover.xml"/>
29 | 		<log type="junit" target="build/logs/junit.xml"/>
30 | 	</logging>
31 | </phpunit>
32 | 


--------------------------------------------------------------------------------
/src/Backtrace.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace Rackbeat\Throttler;
 4 | 
 5 | /**
 6 |  * Casually stolen from spatie/once.
 7 |  */
 8 | class Backtrace
 9 | {
10 | 	/** @var array */
11 | 	protected $trace;
12 | 
13 | 	/** @var array */
14 | 	protected $zeroStack;
15 | 
16 | 	public function __construct( array $trace ) {
17 | 		$this->trace     = $trace[1];
18 | 		$this->zeroStack = $trace[0];
19 | 	}
20 | 
21 | 	public function getArguments(): array {
22 | 		return $this->trace['args'];
23 | 	}
24 | 
25 | 	public function getFunctionName(): string {
26 | 		return $this->trace['function'];
27 | 	}
28 | 
29 | 	/**
30 | 	 * @return mixed
31 | 	 */
32 | 	public function getObject() {
33 | 		return $this->staticCall() ? $this->trace['class'] : $this->trace['object'];
34 | 	}
35 | 
36 | 	public function getHash( $withArguments = true ): string {
37 | 		$normalizedArguments = array_map( function ( $argument ) {
38 | 			return is_object( $argument ) ? spl_object_hash( $argument ) : $argument;
39 | 		}, $this->getArguments() );
40 | 
41 | 		$prefix = $this->getFunctionName();
42 | 		if ( strpos( $prefix, '{closure}' ) !== false ) {
43 | 			$prefix = $this->zeroStack['line'];
44 | 		}
45 | 
46 | 		return md5( $prefix . ( $withArguments ? serialize( $normalizedArguments ) : '' ) );
47 | 	}
48 | 
49 | 	protected function staticCall(): bool {
50 | 		return $this->trace['type'] === '::';
51 | 	}
52 | }
53 | 


--------------------------------------------------------------------------------
/src/Bucket.php:
--------------------------------------------------------------------------------
  1 | <?php namespace Rackbeat\Throttler;
  2 | 
  3 | class Bucket
  4 | {
  5 | 	/** @var int|null */
  6 | 	protected $size;
  7 | 
  8 | 	/** @var int|null */
  9 | 	protected $remaining;
 10 | 
 11 | 	/** @var int|null */
 12 | 	protected $seconds;
 13 | 
 14 | 	/** @var boolean */
 15 | 	protected $burstable = false;
 16 | 
 17 | 	/** @var null|float */
 18 | 	protected $lastBurst;
 19 | 
 20 | 	// todo cache computed values (expectedTimePerIteration etc)
 21 | 
 22 | 	public function __construct( ?int $size = null, ?int $seconds = null ) {
 23 | 		$this->size    = $size;
 24 | 		$this->seconds = $seconds;
 25 | 
 26 | 		$this->reset();
 27 | 	}
 28 | 
 29 | 	public function setSize( int $size ): Bucket {
 30 | 		$this->size = $size;
 31 | 
 32 | 		$this->reset();
 33 | 
 34 | 		return $this;
 35 | 	}
 36 | 
 37 | 	public function makeUnlimited(): Bucket {
 38 | 		$this->size = null;
 39 | 		$this->seconds = null;
 40 | 
 41 | 		$this->reset();
 42 | 
 43 | 		return $this;
 44 | 	}
 45 | 
 46 | 	public function setSeconds( int $seconds ): Bucket {
 47 | 		$this->seconds = $seconds;
 48 | 
 49 | 		$this->reset();
 50 | 
 51 | 		return $this;
 52 | 	}
 53 | 
 54 | 	public function setBurstable( bool $burstable ) {
 55 | 		$this->burstable = $burstable;
 56 | 
 57 | 		return $this;
 58 | 	}
 59 | 
 60 | 	public function shouldBurst() {
 61 | 		return $this->burstable;
 62 | 	}
 63 | 
 64 | 	public function getRemaining(): ?int {
 65 | 		return $this->remaining;
 66 | 	}
 67 | 
 68 | 	public function reset() {
 69 | 		$this->remaining = $this->size;
 70 | 		$this->lastBurst = microtime( true );
 71 | 
 72 | 		return $this;
 73 | 	}
 74 | 
 75 | 	public function pick() {
 76 | 		if ( $this->isUnlimited() ) {
 77 | 			return false;
 78 | 		}
 79 | 
 80 | 		$this->remaining--;
 81 | 
 82 | 		if ( $this->secondsSinceLastBurst() >= $this->seconds ) {
 83 | 			$this->reset();
 84 | 		}
 85 | 	}
 86 | 
 87 | 	public function expectedTimePerIteration() {
 88 | 		if ( $this->isUnlimited() ) {
 89 | 			return 0;
 90 | 		}
 91 | 
 92 | 		return $this->seconds * 1000000 / $this->size;
 93 | 	}
 94 | 
 95 | 	public function expectedSecondsPerIteration() {
 96 | 		if ( $this->isUnlimited() ) {
 97 | 			return 0;
 98 | 		}
 99 | 
100 | 		return $this->seconds / $this->size;
101 | 	}
102 | 
103 | 	public function isExhausted() {
104 | 		if ( $this->isUnlimited() ) {
105 | 			return false;
106 | 		}
107 | 
108 | 		return $this->remaining <= 0;
109 | 	}
110 | 
111 | 	public function secondsSinceLastBurst() {
112 | 		return microtime( true ) - $this->lastBurst;
113 | 	}
114 | 
115 | 	public function exhaustedForMicroseconds() {
116 | 		return $this->exhaustedForSeconds() * 1000000;
117 | 	}
118 | 
119 | 	public function exhaustedForSeconds() {
120 | 		return ( $this->seconds - $this->secondsSinceLastBurst() );
121 | 	}
122 | 
123 | 	public function isUnlimited() {
124 | 		return $this->remaining === null;
125 | 	}
126 | }


--------------------------------------------------------------------------------
/src/Exceptions/NotIterableException.php:
--------------------------------------------------------------------------------
1 | <?php namespace Rackbeat\Throttler\Exceptions;
2 | 
3 | class NotIterableException extends \Exception
4 | {
5 | }


--------------------------------------------------------------------------------
/src/Iterator.php:
--------------------------------------------------------------------------------
 1 | <?php namespace Rackbeat\Throttler;
 2 | 
 3 | use Rackbeat\Throttler\Exceptions\NotIterableException;
 4 | 
 5 | class Iterator
 6 | {
 7 | 	/** @var array|\Iterator|Illuminate\Database\Query\Builder|Illuminate\Database\Eloquent\Builder\Illuminate\Support\Collection $iterable */
 8 | 	protected $iterable;
 9 | 
10 | 	/**
11 | 	 * Iterator constructor.
12 | 	 *
13 | 	 * @param $iterable
14 | 	 *
15 | 	 * @throws NotIterableException
16 | 	 */
17 | 	public function __construct( $iterable ) {
18 | 		if ( ! is_iterable( $iterable ) && ! method_exists( $iterable, 'each' ) ) {
19 | 			throw new NotIterableException( "Passed iterable is not iterable and does not have an 'each' method." );
20 | 		}
21 | 
22 | 		$this->iterable = $iterable;
23 | 	}
24 | 
25 | 	public function count() {
26 | 		return method_exists( $this->iterable, 'count' )
27 | 			? $this->iterable->count()
28 | 			: ( \is_countable( $this->iterable ) ? \count( $this->iterable ) : 0 );
29 | 	}
30 | 
31 | 	public function isQueryBuilder() {
32 | 		return method_exists( $this->iterable, 'each' );
33 | 	}
34 | 
35 | 	public function iterate( $callback ) {
36 | 		if ( $this->isQueryBuilder() ) {
37 | 			// Handle a eloquent/query builder instance
38 | 			$this->runForQueryBuilder( $callback );
39 | 		} else {
40 | 			// Handle iterable
41 | 			$this->runForIterable( $callback );
42 | 		}
43 | 	}
44 | 
45 | 	protected function runForQueryBuilder( $callback ) {
46 | 		$this->iterable->each( function ( $value, $key ) use ( $callback ) {
47 | 			$callback( $value, $key );
48 | 		} );
49 | 	}
50 | 
51 | 	protected function runForIterable( $callback ) {
52 | 		foreach ( $this->iterable as $key => $value ) {
53 | 			$callback( $value, $key );
54 | 		}
55 | 	}
56 | }


--------------------------------------------------------------------------------
/src/MethodThrottler.php:
--------------------------------------------------------------------------------
 1 | <?php namespace Rackbeat\Throttler;
 2 | 
 3 | class MethodThrottler
 4 | {
 5 | 	/** @var Bucket[][][] */
 6 | 	protected static $buckets = [];
 7 | 
 8 | 	public static function throttle( $object, string $backtraceHash, int $executions, int $seconds ) {
 9 | 		$objectHash = static::objectHash( $object );
10 | 
11 | 		if ( ! isset( static::$buckets[ $objectHash ] ) ) {
12 | 			static::$buckets[ $objectHash ] = [];
13 | 		}
14 | 
15 | 		if ( ! array_key_exists( $backtraceHash, static::$buckets[ $objectHash ] ) ) {
16 | 			static::$buckets[ $objectHash ][ $backtraceHash ] = [ 'bucket' => new Bucket( $executions, $seconds ), 'last_execution' => microtime( true ) ];
17 | 		}
18 | 
19 | 		static::delay( static::$buckets[ $objectHash ][ $backtraceHash ] );
20 | 		static::$buckets[ $objectHash ][ $backtraceHash ]['last_execution'] = microtime( true );
21 | 	}
22 | 
23 | 	protected static function objectHash( $object ): string {
24 | 		return is_string( $object ) ? $object : spl_object_hash( $object );
25 | 	}
26 | 
27 | 	protected static function delay( $object ) {
28 | 		if ( $object['last_execution'] && ( $iterationCompletionTime = ( microtime( true ) - $object['last_execution'] ) ) < $object['bucket']->expectedTimePerIteration() ) {
29 | 			usleep( $object['bucket']->expectedTimePerIteration() - $iterationCompletionTime );
30 | 		}
31 | 	}
32 | }


--------------------------------------------------------------------------------
/src/Throttler.php:
--------------------------------------------------------------------------------
  1 | <?php namespace Rackbeat\Throttler;
  2 | 
  3 | use Rackbeat\Throttler\Exceptions\NotIterableException;
  4 | 
  5 | class Throttler
  6 | {
  7 | 	protected $lastIterationFinishedAt;
  8 | 
  9 | 	/** @var Bucket */
 10 | 	protected $bucket;
 11 | 
 12 | 	/** @var Iterator */
 13 | 	protected $iterator;
 14 | 
 15 | 	// todo cache computed values (expectedTimePerIteration etc)
 16 | 
 17 | 	/**
 18 | 	 * @param array|\Iterator|Illuminate\Database\Query\Builder|Illuminate\Database\Eloquent\Builder\Illuminate\Support\Collection $iterable
 19 | 	 *
 20 | 	 * @throws NotIterableException
 21 | 	 */
 22 | 	public function __construct( $iterable ) {
 23 | 		$this->setIterable( $iterable );
 24 | 		$this->bucket = new Bucket();
 25 | 	}
 26 | 
 27 | 	/**
 28 | 	 * @param array|\Iterator|Illuminate\Database\Query\Builder|Illuminate\Database\Eloquent\Builder\Illuminate\Support\Collection $iterable
 29 | 	 *
 30 | 	 * @return Throttler
 31 | 	 * @throws NotIterableException
 32 | 	 */
 33 | 	public static function make( $iterable ): Throttler {
 34 | 		return new static( $iterable );
 35 | 	}
 36 | 
 37 | 	/**
 38 | 	 * Set / Override the data to iterate.
 39 | 	 *
 40 | 	 * @param array|\Iterator|Illuminate\Database\Query\Builder|Illuminate\Database\Eloquent\Builder\Illuminate\Support\Collection $iterable
 41 | 	 *
 42 | 	 * @return Throttler
 43 | 	 * @throws NotIterableException
 44 | 	 */
 45 | 	public function setIterable( $iterable ) {
 46 | 		$this->iterator = new Iterator( $iterable );
 47 | 
 48 | 		return $this;
 49 | 	}
 50 | 
 51 | 	/**
 52 | 	 * @return Iterator
 53 | 	 */
 54 | 	public function getIterator(): Iterator {
 55 | 		return $this->iterator;
 56 | 	}
 57 | 
 58 | 	/**
 59 | 	 * @return Bucket
 60 | 	 */
 61 | 	public function getBucket(): Bucket {
 62 | 		return $this->bucket;
 63 | 	}
 64 | 
 65 | 	/**
 66 | 	 * How many $iterations are allowed within set timeframe.
 67 | 	 *
 68 | 	 * @param int $iterations
 69 | 	 *
 70 | 	 * @return Throttler
 71 | 	 */
 72 | 	public function allow( int $iterations ): Throttler {
 73 | 		$this->bucket->setSize( $iterations );
 74 | 
 75 | 		return $this;
 76 | 	}
 77 | 
 78 | 	/**
 79 | 	 * How many $seconds the timeframe is.
 80 | 	 *
 81 | 	 * @param int $seconds
 82 | 	 *
 83 | 	 * @return Throttler
 84 | 	 */
 85 | 	public function every( int $seconds ): Throttler {
 86 | 		$this->bucket->setSeconds( $seconds );
 87 | 
 88 | 		return $this;
 89 | 	}
 90 | 
 91 | 	/**
 92 | 	 * How many $minutes the timeframe is.
 93 | 	 *
 94 | 	 * ( Helper for every($seconds * 60) )
 95 | 	 *
 96 | 	 * @param int $minutes
 97 | 	 *
 98 | 	 * @return Throttler
 99 | 	 */
100 | 	public function everyMinutes( int $minutes ): Throttler {
101 | 		return $this->every( $minutes * 60 );
102 | 	}
103 | 
104 | 	/**
105 | 	 * How many $iterations are allowed per second.
106 | 	 *
107 | 	 * This is instead of setting a timeframe, you can
108 | 	 * set how many can be run every second.
109 | 	 *
110 | 	 * It simply calculates the timeframe for you, so
111 | 	 * with burst-mode enabled, this won't work as expected.
112 | 	 *
113 | 	 * @param int $iterations
114 | 	 *
115 | 	 * @return Throttler
116 | 	 */
117 | 	public function allowPerSecond( int $iterations ): Throttler {
118 | 		$this->allow( $iterations )->every( 1 );
119 | 
120 | 		return $this;
121 | 	}
122 | 
123 | 	/**
124 | 	 * Activate burst mode.
125 | 	 *
126 | 	 * Will run for all $iterations until done, and then wait
127 | 	 * till the timeframe has passed. If running took longer than
128 | 	 * the timeframe, no throttling will incur.
129 | 	 *
130 | 	 * @return Throttler
131 | 	 */
132 | 	public function inBursts(): Throttler {
133 | 		$this->bucket->setBurstable( true );
134 | 
135 | 		return $this;
136 | 	}
137 | 
138 | 	/**
139 | 	 * Disable burst mode. (default)
140 | 	 *
141 | 	 * Will calculate how many seconds every iteration should take,
142 | 	 * and add a slight delay between every iteration if it was faster.
143 | 	 *
144 | 	 * @return Throttler
145 | 	 */
146 | 	public function withDelays(): Throttler {
147 | 		$this->bucket->setBurstable( false );
148 | 
149 | 		return $this;
150 | 	}
151 | 
152 | 	/**
153 | 	 * Remove any throttling and let it run infinite iterations.
154 | 	 *
155 | 	 * Useful while testing the throttling instead of having to,
156 | 	 * change the $iterations or $seconds but rather append or
157 | 	 * remove the stopThrottling() call before run().
158 | 	 *
159 | 	 * @return Throttler
160 | 	 */
161 | 	public function stopThrottling(): Throttler {
162 | 		$this->bucket->makeUnlimited();
163 | 
164 | 		return $this;
165 | 	}
166 | 
167 | 	/**
168 | 	 * Run the iterations with throttling.
169 | 	 *
170 | 	 * @param $callback
171 | 	 */
172 | 	public function run( $callback ): void {
173 | 		$this->bucket->reset();
174 | 
175 | 		// To properly throttle first iteration
176 | 		$this->lastIterationFinishedAt = microtime( true );
177 | 
178 | 		$this->iterator->iterate( function ( $value, $key ) use ( $callback ) {
179 | 			$this->throttleBursts();
180 | 
181 | 			$this->bucket->pick();
182 | 
183 | 			$callback( $value, $key );
184 | 
185 | 			$this->throttle();
186 | 
187 | 			$this->lastIterationFinishedAt = microtime( true );
188 | 		} );
189 | 	}
190 | 
191 | 	protected function throttle() {
192 | 		if ( $this->bucket->isUnlimited() ) {
193 | 			return false;
194 | 		}
195 | 
196 | 		if ( ! $this->bucket->shouldBurst() ) {
197 | 			$this->delay();
198 | 		}
199 | 	}
200 | 
201 | 	protected function throttleBursts() {
202 | 		if ( $this->bucket->isUnlimited() ) {
203 | 			return false;
204 | 		}
205 | 
206 | 		if ( $this->bucket->shouldBurst() && $this->bucket->isExhausted() ) {
207 | 			$this->pauseForExhaustion();
208 | 			$this->bucket->reset();
209 | 		}
210 | 	}
211 | 
212 | 	protected function delay() {
213 | 		if ( $this->lastIterationFinishedAt
214 | 		     && ( $iterationCompletionTime = ( microtime( true ) - $this->lastIterationFinishedAt ) ) < $this->bucket->expectedTimePerIteration()
215 | 		) {
216 | 			$this->delayFor( $this->bucket->expectedTimePerIteration() - $iterationCompletionTime );
217 | 		}
218 | 	}
219 | 
220 | 	protected function pauseForExhaustion() {
221 | 		$this->delayFor( $this->bucket->exhaustedForMicroseconds() );
222 | 	}
223 | 
224 | 	protected function delayFor( $microseconds ) {
225 | 		usleep( (int) $microseconds );
226 | 	}
227 | }


--------------------------------------------------------------------------------
/src/functions.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | // (heavily) inspired by spatie/once
 4 | 
 5 | /**
 6 |  * @param callable $callback
 7 |  * @param int      $maxExecutions
 8 |  * @param int      $seconds
 9 |  * @param boolean  $ignoreArguments
10 |  *
11 |  * @return mixed
12 |  */
13 | function throttle( $callback, int $maxExecutions, $seconds = 1, $ignoreArguments = false ) {
14 | 	$trace = debug_backtrace(
15 | 		DEBUG_BACKTRACE_PROVIDE_OBJECT, 2
16 | 	);
17 | 
18 | 	$backtrace = new \Rackbeat\Throttler\Backtrace( $trace );
19 | 
20 | 	if ( $backtrace->getFunctionName() === 'eval' ) {
21 | 		return $callback();
22 | 	}
23 | 
24 | 	\Rackbeat\Throttler\MethodThrottler::throttle(
25 | 		$backtrace->getObject(),
26 | 		$backtrace->getHash( ! $ignoreArguments ),
27 | 		$maxExecutions,
28 | 		$seconds
29 | 	);
30 | 
31 | 	return $callback( $backtrace->getArguments() );
32 | 
33 | 
34 | 	// todo implement DestroyListener to cleanup!
35 | 	// todo make sure each class instance is treated as individual items
36 | 	// todo write test cases!
37 | 	// consider using this in the main Throttler as well? ? can we..?
38 | }


--------------------------------------------------------------------------------
/tests/BucketTest.php:
--------------------------------------------------------------------------------
  1 | <?php namespace Rackbeat\Throttler\Tests;
  2 | 
  3 | use PHPUnit\Framework\TestCase;
  4 | use Rackbeat\Throttler\Bucket;
  5 | 
  6 | class BucketTest extends TestCase
  7 | {
  8 | 	/** @var Bucket */
  9 | 	protected $bucket;
 10 | 
 11 | 	public function setUp() {
 12 | 		parent::setUp();
 13 | 
 14 | 		$this->bucket = new Bucket( 100, 60 );
 15 | 	}
 16 | 	
 17 | 	// todo test bursts
 18 | 
 19 | 	/** @test */
 20 | 	public function it_can_be_picked_from() {
 21 | 		$this->bucket->setSize( 10 );
 22 | 
 23 | 		$this->assertEquals( 10, $this->bucket->getRemaining() );
 24 | 		$this->assertEquals( false, $this->bucket->isExhausted() );
 25 | 
 26 | 		$this->bucket->pick();
 27 | 
 28 | 		$this->assertEquals( 9, $this->bucket->getRemaining() );
 29 | 		$this->assertEquals( false, $this->bucket->isExhausted() );
 30 | 
 31 | 		$this->bucket->pick();
 32 | 		$this->bucket->pick();
 33 | 
 34 | 		$this->assertEquals( 7, $this->bucket->getRemaining() );
 35 | 		$this->assertEquals( false, $this->bucket->isExhausted() );
 36 | 
 37 | 		// pick till empty
 38 | 		while ( $this->bucket->getRemaining() > 0 ) {
 39 | 			$this->bucket->pick();
 40 | 		}
 41 | 
 42 | 		$this->assertEquals( true, $this->bucket->isExhausted() );
 43 | 	}
 44 | 
 45 | 	/** @test */
 46 | 	public function it_can_have_unlimited_picks() {
 47 | 		$this->bucket->makeUnlimited();
 48 | 
 49 | 		$this->assertEquals( null, $this->bucket->getRemaining() );
 50 | 		$this->assertEquals( false, $this->bucket->isExhausted() );
 51 | 
 52 | 		$this->bucket->pick();
 53 | 
 54 | 		$this->assertEquals( null, $this->bucket->getRemaining() );
 55 | 		$this->assertEquals( false, $this->bucket->isExhausted() );
 56 | 	}
 57 | 
 58 | 	/** @test */
 59 | 	public function it_can_calculate_expected_time_per_iteration() {
 60 | 		$this->bucket->setSize( 100 )->setSeconds( 10 );
 61 | 
 62 | 		$this->assertEquals( 0.1, $this->bucket->expectedSecondsPerIteration() );
 63 | 		$this->assertEquals( 0.1 * 1000000, $this->bucket->expectedTimePerIteration() );
 64 | 
 65 | 		$this->bucket->setSize( 10 )->setSeconds( 10 );
 66 | 
 67 | 		$this->assertEquals( 1, $this->bucket->expectedSecondsPerIteration() );
 68 | 		$this->assertEquals( 1 * 1000000, $this->bucket->expectedTimePerIteration() );
 69 | 
 70 | 		$this->bucket->setSize( 10 )->setSeconds( 20 );
 71 | 
 72 | 		$this->assertEquals( 2, $this->bucket->expectedSecondsPerIteration() );
 73 | 		$this->assertEquals( 2 * 1000000, $this->bucket->expectedTimePerIteration() );
 74 | 	}
 75 | 
 76 | 	/** @test */
 77 | 	public function when_unlimited_expected_time_per_iteration_must_be_zero() {
 78 | 		$this->bucket->makeUnlimited();
 79 | 
 80 | 		$this->assertEquals( 0, $this->bucket->expectedTimePerIteration() );
 81 | 		$this->assertEquals( 0, $this->bucket->expectedSecondsPerIteration() );
 82 | 	}
 83 | 
 84 | 	/** @test */
 85 | 	public function it_can_become_exhausted_and_rest_back_to_normal() {
 86 | 		$this->bucket->setSize( 3 );
 87 | 
 88 | 		$this->assertEquals( 3, $this->bucket->getRemaining() );
 89 | 		$this->assertEquals( false, $this->bucket->isExhausted() );
 90 | 
 91 | 		$this->bucket->pick();
 92 | 
 93 | 		$this->assertEquals( 2, $this->bucket->getRemaining() );
 94 | 		$this->assertEquals( false, $this->bucket->isExhausted() );
 95 | 
 96 | 		$this->bucket->pick();
 97 | 		$this->bucket->pick();
 98 | 
 99 | 		$this->assertEquals( 0, $this->bucket->getRemaining() );
100 | 		$this->assertEquals( true, $this->bucket->isExhausted() );
101 | 
102 | 		$this->bucket->reset();
103 | 
104 | 		$this->assertEquals( 3, $this->bucket->getRemaining() );
105 | 		$this->assertEquals( false, $this->bucket->isExhausted() );
106 | 	}
107 | 
108 | 	/** @test */
109 | 	public function it_can_calculate_seconds_since_last_reset() {
110 | 		// last reset ~= last burst
111 | 		$this->bucket->setSize( 2 );
112 | 		$this->bucket->reset();
113 | 
114 | 		sleep( 2 );
115 | 
116 | 		$this->assertGreaterThanOrEqual( 2, $this->bucket->secondsSinceLastBurst() );
117 | 
118 | 		sleep( 3 );
119 | 
120 | 		$this->assertGreaterThanOrEqual( 3, $this->bucket->secondsSinceLastBurst() );
121 | 
122 | 		$this->bucket->reset();
123 | 
124 | 		$this->lessThan( 1, $this->bucket->secondsSinceLastBurst() );
125 | 	}
126 | 
127 | 	/** @test */
128 | 	public function it_can_calculate_how_long_it_should_remain_exhausted_for() {
129 | 		$this->bucket->setSize( 2 )->setSeconds( 3 );
130 | 
131 | 		$this->assertEquals( false, $this->bucket->isExhausted() );
132 | 
133 | 		$this->bucket->pick();
134 | 		$this->bucket->pick();
135 | 		$this->bucket->pick();
136 | 
137 | 		$this->assertEquals( true, $this->bucket->isExhausted() );
138 | 
139 | 		sleep( 2 );
140 | 
141 | 		$this->greaterThanOrEqual( 0.8, $this->bucket->exhaustedForSeconds() );
142 | 		$this->greaterThanOrEqual( 0.8 * 10000000, $this->bucket->exhaustedForMicroseconds() );
143 | 		$this->assertLessThanOrEqual( 1.0, $this->bucket->exhaustedForSeconds() );
144 | 		$this->assertLessThanOrEqual( 1.0 * 10000000, $this->bucket->exhaustedForMicroseconds() );
145 | 	}
146 | }
147 | 


--------------------------------------------------------------------------------
/tests/IteratorCountingTest.php:
--------------------------------------------------------------------------------
 1 | <?php namespace Rackbeat\Throttler\Tests;
 2 | 
 3 | use PHPUnit\Framework\TestCase;
 4 | use Rackbeat\Throttler\Iterator;
 5 | use Throttler\Tests\helpers\IterableCountableClass;
 6 | use Throttler\Tests\helpers\IterableNotCountableClass;
 7 | use Throttler\Tests\helpers\MockQueryBuilder;
 8 | 
 9 | class IteratorCountingTest extends TestCase
10 | {
11 | 	/** @test */
12 | 	public function it_can_count_from_an_array() {
13 | 		$iterator = new Iterator( [ 1, 2, 3 ] );
14 | 
15 | 		$this->assertEquals( 3, $iterator->count() );
16 | 	}
17 | 
18 | 	/** @test */
19 | 	public function it_can_count_from_any_iterable_that_implemented_countable() {
20 | 		$iterator = new Iterator( new IterableCountableClass( [ 1, 2, 3 ] ) );
21 | 
22 | 		$this->assertEquals( 3, $iterator->count() );
23 | 	}
24 | 
25 | 	/** @test */
26 | 	public function it_will_count_zero_if_iterable_is_not_countable() {
27 | 		$iterator = new Iterator( new IterableNotCountableClass( [ 1, 2, 3 ] ) );
28 | 
29 | 		$this->assertEquals( 0, $iterator->count() );
30 | 	}
31 | 
32 | 	/** @test */
33 | 	public function it_can_count_from_a_illuminate_query_builder() {
34 | 		// .. or any class that has a 'count' method!
35 | 		$iterator = new Iterator( new MockQueryBuilder( [ 1, 2, 3 ] ) );
36 | 
37 | 		$this->assertEquals( 3, $iterator->count() );
38 | 	}
39 | }
40 | 


--------------------------------------------------------------------------------
/tests/IteratorTest.php:
--------------------------------------------------------------------------------
 1 | <?php namespace Rackbeat\Throttler\Tests;
 2 | 
 3 | use PHPUnit\Framework\TestCase;
 4 | use Rackbeat\Throttler\Exceptions\NotIterableException;
 5 | use Rackbeat\Throttler\Iterator;
 6 | use Throttler\Tests\helpers\IterableCountableClass;
 7 | use Throttler\Tests\helpers\MockQueryBuilder;
 8 | 
 9 | class IteratorTest extends TestCase
10 | {
11 | 	/** @test */
12 | 	public function it_can_iterate_an_array() {
13 | 		$iterator = new Iterator( [ 1, 2, 3 ] );
14 | 
15 | 		$total = 0;
16 | 		$iterator->iterate( function ( $value ) use ( &$total ) {
17 | 			$total += $value;
18 | 		} );
19 | 
20 | 		$this->assertEquals( 6, $total );
21 | 	}
22 | 
23 | 	/** @test */
24 | 	public function it_can_iterate_any_iterable() {
25 | 		$iterator = new Iterator( new IterableCountableClass( [ 1, 2, 3 ] ) );
26 | 
27 | 		$total = 0;
28 | 		$iterator->iterate( function ( $value ) use ( &$total ) {
29 | 			$total += $value;
30 | 		} );
31 | 
32 | 		$this->assertEquals( 6, $total );
33 | 	}
34 | 
35 | 	/** @test */
36 | 	public function it_can_iterate_a_query_builder() {
37 | 		// .. or any class with an 'each' method!
38 | 		$iterator = new Iterator( new MockQueryBuilder( [ 1, 2, 3 ] ) );
39 | 
40 | 		$total = 0;
41 | 		$iterator->iterate( function ( $value ) use ( &$total ) {
42 | 			$total += $value;
43 | 		} );
44 | 
45 | 		$this->assertEquals( 6, $total );
46 | 	}
47 | 
48 | 	/** @test */
49 | 	public function it_will_throw_an_exception_if_iterable_is_not_iterable() {
50 | 		$this->expectException( NotIterableException::class );
51 | 		new Iterator( 'hi there?!' );
52 | 	}
53 | }
54 | 


--------------------------------------------------------------------------------
/tests/MethodThrottlerTest.php:
--------------------------------------------------------------------------------
 1 | <?php namespace Rackbeat\Throttler\Tests;
 2 | 
 3 | use PHPUnit\Framework\TestCase;
 4 | 
 5 | class MethodThrottlerTest extends TestCase
 6 | {
 7 | 	/** @test */
 8 | 	public function it_will_properly_delay_executions_when_throttled() {
 9 | 		$testClass = new class()
10 | 		{
11 | 			public function returnNumberTimesTwo( $number ) {
12 | 				return throttle( function () use ( $number ) {
13 | 					return $number * 2;
14 | 				}, 1 );
15 | 			}
16 | 		};
17 | 
18 | 		$total = 0;
19 | 		$start = microtime( true );
20 | 
21 | 		foreach ( range( 1, 5 ) as $i ) {
22 | 			$total += $testClass->returnNumberTimesTwo( 1 );
23 | 		}
24 | 
25 | 		$this->assertGreaterThanOrEqual( 5, microtime( true ) - $start );
26 | 		$this->assertEquals( 10, $total );
27 | 	}
28 | 
29 | 	/** @test */
30 | 	public function it_can_ignore_arguments_and_always_throttle_same_method_call() {
31 | 		$testClass = new class()
32 | 		{
33 | 			public function addToNumber( &$number ) {
34 | 				return throttle( function () use ( &$number ) {
35 | 					return $number++;
36 | 				}, 1, 2, true );
37 | 			}
38 | 		};
39 | 
40 | 		$total = 0;
41 | 		$start = microtime( true );
42 | 
43 | 		foreach ( range( 1, 3 ) as $i ) {
44 | 			$testClass->addToNumber( $total );
45 | 		}
46 | 
47 | 		$this->assertGreaterThanOrEqual( 6, microtime( true ) - $start );
48 | 		$this->assertEquals( 3, $total );
49 | 	}
50 | 
51 | 	/** @test */
52 | 	public function it_will_limit_nested_method_calls() {
53 | 		$testClass = new class()
54 | 		{
55 | 			public $actions = [ 'buy' => 0, 'return' => 0 ];
56 | 
57 | 			public function buy() {
58 | 				return $this->sendApiCall( 'buy' );
59 | 			}
60 | 
61 | 			public function return() {
62 | 				return $this->sendApiCall( 'return' );
63 | 			}
64 | 
65 | 			protected function sendApiCall( $method ) {
66 | 				return throttle( function () use ( $method ) {
67 | 					$this->actions[ $method ]++;
68 | 				}, 1, 1, true );
69 | 			}
70 | 		};
71 | 
72 | 		$start = microtime( true );
73 | 
74 | 		$testClass->buy();
75 | 		$testClass->buy();
76 | 		$testClass->return();
77 | 		$testClass->buy();
78 | 
79 | 		$this->assertGreaterThanOrEqual( 4, microtime( true ) - $start );
80 | 		$this->assertEquals( 3, $testClass->actions['buy'] );
81 | 		$this->assertEquals( 1, $testClass->actions['return'] );
82 | 	}
83 | }
84 | 


--------------------------------------------------------------------------------
/tests/ThrottlerTest.php:
--------------------------------------------------------------------------------
  1 | <?php namespace Rackbeat\Throttler\Tests;
  2 | 
  3 | use PHPUnit\Framework\TestCase;
  4 | use Rackbeat\Throttler\Throttler;
  5 | 
  6 | class ThrottlerTest extends TestCase
  7 | {
  8 | 	/** @var Throttler */
  9 | 	protected $throttler;
 10 | 
 11 | 	public function setUp() {
 12 | 		parent::setUp();
 13 | 
 14 | 		$this->throttler = new Throttler( [] );
 15 | 	}
 16 | 
 17 | 	/** @test */
 18 | 	public function it_can_count_iterations_to_do() {
 19 | 		$this->throttler->setIterable( [ 1, 2, 3 ] );
 20 | 
 21 | 		$this->assertEquals( 3, $this->throttler->getIterator()->count() );
 22 | 
 23 | 		$this->throttler->setIterable( [] );
 24 | 
 25 | 		$this->assertEquals( 0, $this->throttler->getIterator()->count() );
 26 | 
 27 | 		$this->throttler->setIterable( range( 1, 100 ) );
 28 | 
 29 | 		$this->assertEquals( 100, $this->throttler->getIterator()->count() );
 30 | 	}
 31 | 
 32 | 	/** @test */
 33 | 	public function it_can_be_instantiated_using_the_static_method() {
 34 | 		$this->throttler = Throttler::make( [ 1, 2, 3 ] );
 35 | 
 36 | 		$this->assertEquals( 3, $this->throttler->getIterator()->count() );
 37 | 	}
 38 | 
 39 | 	/** @test */
 40 | 	public function it_can_run_all_iterations_with_a_simple_callback() {
 41 | 		$this->throttler->setIterable( [ 100, 500, 400 ] );
 42 | 
 43 | 		$total = 0;
 44 | 		$this->throttler->allow( 3 )->every( 1 )->run( function ( $value ) use ( &$total ) {
 45 | 			$total += $value;
 46 | 		} );
 47 | 
 48 | 		$this->assertEquals( 1000, $total );
 49 | 	}
 50 | 
 51 | 	/** @test */
 52 | 	public function it_can_be_throttled_default_without_bursts() {
 53 | 		$this->throttler->setIterable( range( 1, 10 ) ); // 10 items
 54 | 
 55 | 		$start = microtime( true );
 56 | 
 57 | 		$this->throttler->allow( 5 )->every( 3 )->run( function ( $value ) { } );
 58 | 
 59 | 		$this->assertGreaterThanOrEqual( 6, microtime( true ) - $start );
 60 | 	}
 61 | 
 62 | 	/** @test */
 63 | 	public function it_can_switch_between_burst_mode() {
 64 | 		$this->assertEquals( false, $this->throttler->getBucket()->shouldBurst() );
 65 | 
 66 | 		$this->throttler->inBursts();
 67 | 
 68 | 		$this->assertEquals( true, $this->throttler->getBucket()->shouldBurst() );
 69 | 
 70 | 		$this->throttler->withDelays();
 71 | 
 72 | 		$this->assertEquals( false, $this->throttler->getBucket()->shouldBurst() );
 73 | 	}
 74 | 
 75 | 	/** @test */
 76 | 	public function it_can_be_throttled_in_minutes() {
 77 | 		$this->throttler->setIterable( range( 1, 10 ) )
 78 | 		                ->allow( 120 )
 79 | 		                ->everyMinutes( 1 );
 80 | 
 81 | 		$this->assertEquals( 0.5, $this->throttler->getBucket()->expectedSecondsPerIteration() );
 82 | 	}
 83 | 
 84 | 	/** @test */
 85 | 	public function it_can_be_throttled_in_bursts() {
 86 | 		$this->throttler->setIterable( range( 1, 10 ) ); // 10 items
 87 | 		$this->throttler->inBursts();
 88 | 
 89 | 		$timeFirstHalf  = null;
 90 | 		$timeSecondHalf = null;
 91 | 		$start          = microtime( true );
 92 | 
 93 | 		$this->throttler->allow( 5 )->every( 3 )->run( function ( $value, $index ) use ( $start, &$timeFirstHalf, &$timeSecondHalf ) {
 94 | 			if ( $index === 4 ) {
 95 | 				$timeFirstHalf = microtime( true ) - $start;
 96 | 			} elseif ( $index === 9 ) {
 97 | 				$timeSecondHalf = microtime( true ) - $start;
 98 | 			}
 99 | 		} );
100 | 
101 | 		$this->assertLessThan( 3, $timeFirstHalf );
102 | 		$this->assertGreaterThanOrEqual( 3, $timeSecondHalf );
103 | 		$this->assertGreaterThanOrEqual( 3, microtime( true ) - $start );
104 | 		$this->assertLessThan( 4, $timeSecondHalf );
105 | 		$this->assertLessThan( 4, microtime( true ) - $start );
106 | 	}
107 | 
108 | 	/** @test */
109 | 	public function it_wont_be_throttled_in_unlimted_mode() {
110 | 		$this->throttler->setIterable( $items = range( 1, 1000 ) ); // 1000 items
111 | 
112 | 		$start = microtime( true );
113 | 
114 | 		$total = 0;
115 | 		$this->throttler->stopThrottling()->run( function ( $value ) use ( &$total ) { $total += $value; } );
116 | 
117 | 		$this->assertEquals( array_sum( $items ), $total );
118 | 		$this->assertLessThan( 1, microtime( true ) - $start );
119 | 	}
120 | 
121 | 	/** @test */
122 | 	public function it_can_set_how_many_iterations_per_second_with_helper() {
123 | 		$this->throttler->allowPerSecond( 10 );
124 | 
125 | 		$this->assertEquals( 0.1, $this->throttler->getBucket()->expectedSecondsPerIteration() );
126 | 
127 | 		$this->throttler->allowPerSecond( 1 );
128 | 
129 | 		$this->assertEquals( 1, $this->throttler->getBucket()->expectedSecondsPerIteration() );
130 | 
131 | 		$this->throttler->allowPerSecond( 100 );
132 | 
133 | 		$this->assertEquals( 0.01, $this->throttler->getBucket()->expectedSecondsPerIteration() );
134 | 	}
135 | }
136 | 


--------------------------------------------------------------------------------
/tests/helpers/IterableCountableClass.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace Throttler\Tests\helpers;
 4 | 
 5 | class IterableCountableClass extends IterableNotCountableClass implements \Countable
 6 | {
 7 | 	public function count() {
 8 | 		return \count( $this->data );
 9 | 	}
10 | }


--------------------------------------------------------------------------------
/tests/helpers/IterableNotCountableClass.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | namespace Throttler\Tests\helpers;
 4 | 
 5 | class IterableNotCountableClass implements \Iterator
 6 | {
 7 | 	protected $data;
 8 | 	protected $position = 0;
 9 | 
10 | 	public function __construct( array $data ) {
11 | 		$this->data = $data;
12 | 	}
13 | 
14 | 	public function current() {
15 | 		return $this->data[ $this->position ];
16 | 	}
17 | 
18 | 	public function next() {
19 | 		$this->position++;
20 | 	}
21 | 
22 | 	public function key() {
23 | 		return $this->position;
24 | 	}
25 | 
26 | 	public function valid() {
27 | 		return isset( $this->data[ $this->position ] );
28 | 	}
29 | 
30 | 	public function rewind() {
31 | 		$this->position = 0;
32 | 	}
33 | }


--------------------------------------------------------------------------------
/tests/helpers/MockQueryBuilder.php:
--------------------------------------------------------------------------------
 1 | <?php namespace Throttler\Tests\helpers;
 2 | 
 3 | class MockQueryBuilder
 4 | {
 5 | 	protected $data;
 6 | 
 7 | 	public function __construct( array $data ) {
 8 | 		$this->data = $data;
 9 | 	}
10 | 
11 | 	public function each( $callback ) {
12 | 		foreach ( $this->data as $key => $value ) {
13 | 			$callback( $value, $key );
14 | 		}
15 | 	}
16 | 
17 | 	public function count() {
18 | 		return \count( $this->data );
19 | 	}
20 | }


--------------------------------------------------------------------------------