Loader::set() - Code Metrics - Inspection of "Create integration tests" - monospice/laravel-redis-sentinel-drivers - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — 2.x ( 341981...b9f40f )

by Cy

created 2018-03-20 04:45 UTC

Loader::set() A

↳ Parent: Loader

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

namespace Monospice\LaravelRedisSentinel\Configuration;

use Illuminate\Foundation\Application as LaravelApplication;
use Illuminate\Support\Arr;
use Laravel\Lumen\Application as LumenApplication;
use Monospice\LaravelRedisSentinel\Configuration\HostNormalizer;
use Monospice\LaravelRedisSentinel\Manager;

/**
 * The internal configuration loader for the package. Used by the package's
 * service provider.
 *
 * This package provides developers three ways to configure it: through the
 * environment, by adding config values to the configuration for the other
 * components that the package wraps, and by creating an external package
 * configuration file that overrides the default internal configuration.
 * The package uses its configuration information to set Redis connection,
 * cache, session, and queue configuration values when these are missing.
 * This approach simplifies the code needed to configure the package for many
 * applications while still providing the flexibility needed for advanced
 * setups. This class reconciles each of the configuration methods.
 *
 * The package's configuration contains partial elements from several other
 * component configurations. By default, the package removes its configuration
 * after merging the values into each of the appropriate config locations for
 * the components it initializes. This behavior prevents the artisan CLI's
 * "config:cache" command from saving unnecessary configuration values to the
 * configuration cache file. Set the value of "redis-sentinel.clean_config" to
 * FALSE to disable this behavior.
 *
 * To support these configuration scenarios, this class follows these rules:
 *
 *   - Values in application config files ("config/database.php", etc.) have
 *     the greatest precedence. The package will use these values before any
 *     others and will not modify these values if they exist.
 *   - The package will use values in a developer-supplied package config file
 *     located in the application's "config/" directory with the filename of
 *     "redis-sentinel.php" for any values not found in the application's
 *     standard configuration files before using it's default configuration.
 *   - For any configuration values not provided by standard application
 *     config files or a developer-supplied custom config file, the package
 *     uses it's internal default configuration that reads configuration values
 *     from environment variables.
 *   - The package will copy values from it's configuration to the standard
 *     application configuration at runtime if these are missing. For example,
 *     if the application configuration doesn't contain a key for "database.
 *     redis-sentinel" (the Redis Sentinel connections), this class will copy
 *     its values from "redis-sentinel.database.redis-sentinel" to "database.
 *     redis-sentinel".
 *   - After loading its configuration, the package must only use configuration
 *     values from the standard application config locations. For example, the
 *     package will read the values from "database.redis-sentinel" to configure
 *     Redis Sentinel connections, not "redis-sentinel.database.redis-sentinel".
 *
 * @category Package
 * @package  Monospice\LaravelRedisSentinel
 * @author   Cy Rossignol <[email protected]>
 * @license  See LICENSE file
 * @link     https://github.com/monospice/laravel-redis-sentinel-drivers
 */
class Loader
{
    /**
     * The path to the package's default configuration file.
     *
     * @var string
     */
    const CONFIG_PATH = __DIR__ . '/../../config/redis-sentinel.php';

    /**
     * Indicates whether the current application runs the Lumen framework.
     *
     * @var bool
     */
    public $isLumen;

    /**
     * Indicates whether the current application supports sessions.
     *
     * @var bool
     */
    public $supportsSessions;

    /**
     * Indicates whether the package should override Laravel's standard Redis
     * API ("Redis" facade and "redis" service binding).
     *
     * @var bool
     */
    public $shouldOverrideLaravelRedisApi;

    /**
     * The current Laravel or Lumen application instance that provides context
     * and services used to load the appropriate configuration.
     *
     * @var LaravelApplication|LumenApplication
     */
    private $app;

    /**
     * Used to fetch and set application configuration values.
     *
     * @var \Illuminate\Contracts\Config\Repository
     */
    private $config;

    /**
     * Contains the set of configuration values used to configure the package
     * as loaded from "config/redis-sentinel.php". Empty when the application's
     * standard config files provide all the values needed to configure the
     * package (such as when a developer provides a custom config).
     *
     * @var array
     */
    private $packageConfig;

    /**
     * Initialize the configuration loader. Any actual loading occurs when
     * calling the 'loadConfiguration()' method.
     *
     * @param LaravelApplication|LumenApplication $app The current application
     * instance that provides context and services needed to load the
     * appropriate configuration.
     */
    public function __construct($app)
    {
        $this->app = $app;
        $this->config = $app->make('config');

        $lumenApplicationClass = 'Laravel\Lumen\Application';

        $this->isLumen = $app instanceof $lumenApplicationClass;
        $this->supportsSessions = $app->bound('session');
    }

    /**
     * Create an instance of the loader and load the configuration in one step.
     *
     * @param LaravelApplication|LumenApplication $app The current application
     * instance that provides context and services needed to load the
     * appropriate configuration.
     *
     * @return self An initialized instance of this class
     */
    public static function load($app)
    {
        $loader = new self($app);
        $loader->loadConfiguration();

        return $loader;
    }

    /**
     * Load the package configuration.
     *
     * @return void
     */
    public function loadConfiguration()
    {
        if ($this->shouldLoadConfiguration()) {
            if ($this->isLumen) {
                $this->configureLumenComponents();
            }

            $this->loadPackageConfiguration();
        }

        // Previous versions of the package looked for the value 'sentinel':
        $redisDriver = $this->config->get('database.redis.driver');
        $this->shouldOverrideLaravelRedisApi = $redisDriver === 'redis-sentinel'
            || $redisDriver === 'sentinel';
    }

    /**
     * Get the fully-qualified class name of the RedisSentinelManager class
     * for the current version of Laravel or Lumen.
     *
     * @return string The class name of the appropriate RedisSentinelManager
     * with its namespace
     */
    public function getVersionedRedisSentinelManagerClass()
    {
        if ($this->isLumen) {
            $appVersion = substr($this->app->version(), 7, 3); // ex. "5.4"
            $frameworkVersion = '5.4';
        } else {
            $appVersion = \Illuminate\Foundation\Application::VERSION;
            $frameworkVersion = '5.4.20';
        }

        if (version_compare($appVersion, $frameworkVersion, 'lt')) {
            return Manager\Laravel540RedisSentinelManager::class;
        }

        return Manager\Laravel5420RedisSentinelManager::class;
    }

    /**
     * Fetch the specified application configuration value.
     *
     * This helper method enables the package's service providers to get config
     * values without having to resolve the config service from the container.
     *
     * @param string|array $key     The key(s) for the value(s) to fetch.
     * @param mixed        $default Returned if the key does not exist.
     *
     * @return mixed The requested configuration value or the provided default
     * if the key does not exist.
     */
    public function get($key, $default = null)
    {
        return $this->config->get($key, $default);
    }

    /**
     * Set the specified application configuration value.
     *
     * This helper method enables the package's service providers to set config
     * values without having to resolve the config service from the container.
     *
     * @param string|array $key   The key of the value or a tree of values as
     * an associative array.
     * @param mixed        $value The value to set for the specified key.
     *
     * @return void
     */
    public function set($key, $value = null)
    {
        $this->config->set($key, $value);
    }

    /**
     * Determine if the package should automatically configure itself.
     *
     * Developers may set the value of "redis-sentinel.load_config" to FALSE to
     * disable the package's automatic configuration. This class also sets this
     * value to FALSE after loading the package configuration to skip the auto-
     * configuration when the application cached its configuration values (via
     * "artisan config:cache", for example).
     *
     * @return bool TRUE if the package should load its configuration
     */
    protected function shouldLoadConfiguration()
    {
        if ($this->isLumen) {
            $this->app->configure('redis-sentinel');
        }

        return $this->config->get('redis-sentinel.load_config', true) === true;
    }

    /**
     * Configure the Lumen components that this package depends on.
     *
     * Lumen lazily loads many of its components. We must instruct Lumen to
     * load the configuration for components that this class configures so
     * that the values are accessible and so that the framework does not
     * revert the configuration settings that this class changes when one of
     * the components initializes later.
     *
     * @return void
     */
    protected function configureLumenComponents()
    {
        $this->app->configure('database');
        $this->app->configure('broadcasting');
        $this->app->configure('cache');
        $this->app->configure('queue');
    }

    /**
     * Reconcile the package configuration and use it to set the appropriate
     * configuration values for other application components.
     *
     * @return void
     */
    protected function loadPackageConfiguration()
    {
        $this->setConfigurationFor('database.redis-sentinel');
        $this->setConfigurationFor('database.redis.driver');
        $this->setConfigurationFor('broadcasting.connections.redis-sentinel');
        $this->setConfigurationFor('cache.stores.redis-sentinel');
        $this->setConfigurationFor('queue.connections.redis-sentinel');
        $this->setSessionConfiguration();

        $this->normalizeHosts();

        if ($this->packageConfig !== null) {
            $this->cleanPackageConfiguration();
        }
    }

    /**
     * Set the application configuration value for the specified key with the
     * value from the package configuration.
     *
     * @param string $configKey   The key of the config value to set. Should
     * correspond to a key in the package's configuration.
     * @param bool   $checkExists If TRUE, don't set the value if the key
     * already exists in the application configuration.
     *
     * @return void
     */
    protected function setConfigurationFor($configKey, $checkExists = true)
    {
        if ($checkExists && $this->config->has($configKey)) {
            return;
        }

        $config = $this->getPackageConfigurationFor($configKey);

        $this->config->set($configKey, $config);
    }

    /**
     * Set the application session configuration as specified by the package's
     * configuration if the app supports sessions.
     *
     * @return void
     */
    protected function setSessionConfiguration()
    {
        if (! $this->supportsSessions
            || $this->config->get('session.driver') !== 'redis-sentinel'
            || $this->config->get('session.connection') !== null
        ) {
            return;
        }

        $this->setConfigurationFor('session.connection', false);
    }

    /**
     * Get the package configuration for the specified key.
     *
     * @param string $configKey The key of the configuration value to get
     *
     * @return mixed The value of the configuration with the specified key
     */
    protected function getPackageConfigurationFor($configKey)
    {
        if ($this->packageConfig === null) {
            $this->mergePackageConfiguration();
        }

        return Arr::get($this->packageConfig, $configKey);
    }

    /**
     * Merge the package's default configuration with the override config file
     * supplied by the developer, if any.
     *
     * @return void
     */
    protected function mergePackageConfiguration()
    {
        $defaultConfig = require self::CONFIG_PATH;
        $currentConfig = $this->config->get('redis-sentinel', [ ]);

        $this->packageConfig = array_merge($defaultConfig, $currentConfig);
    }

    /**
     * Parse Redis Sentinel connection host definitions to create single host
     * entries for host definitions that specify multiple hosts.
     *
     * @return void
     */
    protected function normalizeHosts()
    {
        $connections = $this->config->get('database.redis-sentinel');

        if (! is_array($connections)) {
            return;
        }

        $this->config->set(
            'database.redis-sentinel',
            HostNormalizer::normalizeConnections($connections)
        );
    }

    /**
     * Remove the package's configuration from the application configuration
     * repository.
     *
     * This package's configuration contains partial elements from several
     * other component configurations. By default, the package removes its
     * configuration after merging the values into each of the appropriate
     * config locations for the components it initializes. This behavior
     * prevents the artisan "config:cache" command from saving unnecessary
     * configuration values to the cache file.
     *
     * @return void
     */
    protected function cleanPackageConfiguration()
    {
        // When we're finished with the internal package configuration, break
        // the reference so that it can be garbage-collected:
        $this->packageConfig = null;

        if ($this->config->get('redis-sentinel.clean_config', true) !== true) {
            return;
        }

        $this->config->set('redis-sentinel', [
            'Config merged. Set "redis-sentinel.clean_config" = false to keep.',
            'load_config' => false, // skip loading package config when cached
        ]);
    }
}


1			<?php
2
3			namespace Monospice\LaravelRedisSentinel\Configuration;
4
5			use Illuminate\Foundation\Application as LaravelApplication;
6			use Illuminate\Support\Arr;
7			use Laravel\Lumen\Application as LumenApplication;
8			use Monospice\LaravelRedisSentinel\Configuration\HostNormalizer;
9			use Monospice\LaravelRedisSentinel\Manager;
10
11			/**
12			* The internal configuration loader for the package. Used by the package's
13			* service provider.
14			*
15			* This package provides developers three ways to configure it: through the
16			* environment, by adding config values to the configuration for the other
17			* components that the package wraps, and by creating an external package
18			* configuration file that overrides the default internal configuration.
19			* The package uses its configuration information to set Redis connection,
20			* cache, session, and queue configuration values when these are missing.
21			* This approach simplifies the code needed to configure the package for many
22			* applications while still providing the flexibility needed for advanced
23			* setups. This class reconciles each of the configuration methods.
24			*
25			* The package's configuration contains partial elements from several other
26			* component configurations. By default, the package removes its configuration
27			* after merging the values into each of the appropriate config locations for
28			* the components it initializes. This behavior prevents the artisan CLI's
29			* "config:cache" command from saving unnecessary configuration values to the
30			* configuration cache file. Set the value of "redis-sentinel.clean_config" to
31			* FALSE to disable this behavior.
32			*
33			* To support these configuration scenarios, this class follows these rules:
34			*
35			* - Values in application config files ("config/database.php", etc.) have
36			* the greatest precedence. The package will use these values before any
37			* others and will not modify these values if they exist.
38			* - The package will use values in a developer-supplied package config file
39			* located in the application's "config/" directory with the filename of
40			* "redis-sentinel.php" for any values not found in the application's
41			* standard configuration files before using it's default configuration.
42			* - For any configuration values not provided by standard application
43			* config files or a developer-supplied custom config file, the package
44			* uses it's internal default configuration that reads configuration values
45			* from environment variables.
46			* - The package will copy values from it's configuration to the standard
47			* application configuration at runtime if these are missing. For example,
48			* if the application configuration doesn't contain a key for "database.
49			* redis-sentinel" (the Redis Sentinel connections), this class will copy
50			* its values from "redis-sentinel.database.redis-sentinel" to "database.
51			* redis-sentinel".
52			* - After loading its configuration, the package must only use configuration
53			* values from the standard application config locations. For example, the
54			* package will read the values from "database.redis-sentinel" to configure
55			* Redis Sentinel connections, not "redis-sentinel.database.redis-sentinel".
56			*
57			* @category Package
58			* @package Monospice\LaravelRedisSentinel
59			* @author Cy Rossignol <[email protected]>
60			* @license See LICENSE file
61			* @link https://github.com/monospice/laravel-redis-sentinel-drivers
62			*/
63			class Loader
64			{
65			/**
66			* The path to the package's default configuration file.
67			*
68			* @var string
69			*/
70			const CONFIG_PATH = __DIR__ . '/../../config/redis-sentinel.php';
71
72			/**
73			* Indicates whether the current application runs the Lumen framework.
74			*
75			* @var bool
76			*/
77			public $isLumen;
78
79			/**
80			* Indicates whether the current application supports sessions.
81			*
82			* @var bool
83			*/
84			public $supportsSessions;
85
86			/**
87			* Indicates whether the package should override Laravel's standard Redis
88			* API ("Redis" facade and "redis" service binding).
89			*
90			* @var bool
91			*/
92			public $shouldOverrideLaravelRedisApi;
93
94			/**
95			* The current Laravel or Lumen application instance that provides context
96			* and services used to load the appropriate configuration.
97			*
98			* @var LaravelApplication\|LumenApplication
99			*/
100			private $app;
101
102			/**
103			* Used to fetch and set application configuration values.
104			*
105			* @var \Illuminate\Contracts\Config\Repository
106			*/
107			private $config;
108
109			/**
110			* Contains the set of configuration values used to configure the package
111			* as loaded from "config/redis-sentinel.php". Empty when the application's
112			* standard config files provide all the values needed to configure the
113			* package (such as when a developer provides a custom config).
114			*
115			* @var array
116			*/
117			private $packageConfig;
118
119			/**
120			* Initialize the configuration loader. Any actual loading occurs when
121			* calling the 'loadConfiguration()' method.
122			*
123			* @param LaravelApplication\|LumenApplication $app The current application
124			* instance that provides context and services needed to load the
125			* appropriate configuration.
126			*/
127			public function __construct($app)
128			{
129			$this->app = $app;
130			$this->config = $app->make('config');
131
132			$lumenApplicationClass = 'Laravel\Lumen\Application';
133
134			$this->isLumen = $app instanceof $lumenApplicationClass;
135			$this->supportsSessions = $app->bound('session');
136			}
137
138			/**
139			* Create an instance of the loader and load the configuration in one step.
140			*
141			* @param LaravelApplication\|LumenApplication $app The current application
142			* instance that provides context and services needed to load the
143			* appropriate configuration.
144			*
145			* @return self An initialized instance of this class
146			*/
147			public static function load($app)
148			{
149			$loader = new self($app);
150			$loader->loadConfiguration();
151
152			return $loader;
153			}
154
155			/**
156			* Load the package configuration.
157			*
158			* @return void
159			*/
160			public function loadConfiguration()
161			{
162			if ($this->shouldLoadConfiguration()) {
163			if ($this->isLumen) {
164			$this->configureLumenComponents();
165			}
166
167			$this->loadPackageConfiguration();
168			}
169
170			// Previous versions of the package looked for the value 'sentinel':
171			$redisDriver = $this->config->get('database.redis.driver');
172			$this->shouldOverrideLaravelRedisApi = $redisDriver === 'redis-sentinel'
173			\|\| $redisDriver === 'sentinel';
174			}
175
176			/**
177			* Get the fully-qualified class name of the RedisSentinelManager class
178			* for the current version of Laravel or Lumen.
179			*
180			* @return string The class name of the appropriate RedisSentinelManager
181			* with its namespace
182			*/
183			public function getVersionedRedisSentinelManagerClass()
184			{
185			if ($this->isLumen) {
186			$appVersion = substr($this->app->version(), 7, 3); // ex. "5.4"
187			$frameworkVersion = '5.4';
188			} else {
189			$appVersion = \Illuminate\Foundation\Application::VERSION;
190			$frameworkVersion = '5.4.20';
191			}
192
193			if (version_compare($appVersion, $frameworkVersion, 'lt')) {
194			return Manager\Laravel540RedisSentinelManager::class;
195			}
196
197			return Manager\Laravel5420RedisSentinelManager::class;
198			}
199
200			/**
201			* Fetch the specified application configuration value.
202			*
203			* This helper method enables the package's service providers to get config
204			* values without having to resolve the config service from the container.
205			*
206			* @param string\|array $key The key(s) for the value(s) to fetch.
207			* @param mixed $default Returned if the key does not exist.
208			*
209			* @return mixed The requested configuration value or the provided default
210			* if the key does not exist.
211			*/
212			public function get($key, $default = null)
213			{
214			return $this->config->get($key, $default);
215			}
216
217			/**
218			* Set the specified application configuration value.
219			*
220			* This helper method enables the package's service providers to set config
221			* values without having to resolve the config service from the container.
222			*
223			* @param string\|array $key The key of the value or a tree of values as
224			* an associative array.
225			* @param mixed $value The value to set for the specified key.
226			*
227			* @return void
228			*/
229			public function set($key, $value = null)
230			{
231			$this->config->set($key, $value);
232			}
233
234			/**
235			* Determine if the package should automatically configure itself.
236			*
237			* Developers may set the value of "redis-sentinel.load_config" to FALSE to
238			* disable the package's automatic configuration. This class also sets this
239			* value to FALSE after loading the package configuration to skip the auto-
240			* configuration when the application cached its configuration values (via
241			* "artisan config:cache", for example).
242			*
243			* @return bool TRUE if the package should load its configuration
244			*/
245			protected function shouldLoadConfiguration()
246			{
247			if ($this->isLumen) {
248			$this->app->configure('redis-sentinel');
249			}
250
251			return $this->config->get('redis-sentinel.load_config', true) === true;
252			}
253
254			/**
255			* Configure the Lumen components that this package depends on.
256			*
257			* Lumen lazily loads many of its components. We must instruct Lumen to
258			* load the configuration for components that this class configures so
259			* that the values are accessible and so that the framework does not
260			* revert the configuration settings that this class changes when one of
261			* the components initializes later.
262			*
263			* @return void
264			*/
265			protected function configureLumenComponents()
266			{
267			$this->app->configure('database');
268			$this->app->configure('broadcasting');
269			$this->app->configure('cache');
270			$this->app->configure('queue');
271			}
272
273			/**
274			* Reconcile the package configuration and use it to set the appropriate
275			* configuration values for other application components.
276			*
277			* @return void
278			*/
279			protected function loadPackageConfiguration()
280			{
281			$this->setConfigurationFor('database.redis-sentinel');
282			$this->setConfigurationFor('database.redis.driver');
283			$this->setConfigurationFor('broadcasting.connections.redis-sentinel');
284			$this->setConfigurationFor('cache.stores.redis-sentinel');
285			$this->setConfigurationFor('queue.connections.redis-sentinel');
286			$this->setSessionConfiguration();
287
288			$this->normalizeHosts();
289
290			if ($this->packageConfig !== null) {
291			$this->cleanPackageConfiguration();
292			}
293			}
294
295			/**
296			* Set the application configuration value for the specified key with the
297			* value from the package configuration.
298			*
299			* @param string $configKey The key of the config value to set. Should
300			* correspond to a key in the package's configuration.
301			* @param bool $checkExists If TRUE, don't set the value if the key
302			* already exists in the application configuration.
303			*
304			* @return void
305			*/
306			protected function setConfigurationFor($configKey, $checkExists = true)
307			{
308			if ($checkExists && $this->config->has($configKey)) {
309			return;
310			}
311
312			$config = $this->getPackageConfigurationFor($configKey);
313
314			$this->config->set($configKey, $config);
315			}
316
317			/**
318			* Set the application session configuration as specified by the package's
319			* configuration if the app supports sessions.
320			*
321			* @return void
322			*/
323			protected function setSessionConfiguration()
324			{
325			if (! $this->supportsSessions
326			\|\| $this->config->get('session.driver') !== 'redis-sentinel'
327			\|\| $this->config->get('session.connection') !== null
328			) {
329			return;
330			}
331
332			$this->setConfigurationFor('session.connection', false);
333			}
334
335			/**
336			* Get the package configuration for the specified key.
337			*
338			* @param string $configKey The key of the configuration value to get
339			*
340			* @return mixed The value of the configuration with the specified key
341			*/
342			protected function getPackageConfigurationFor($configKey)
343			{
344			if ($this->packageConfig === null) {
345			$this->mergePackageConfiguration();
346			}
347
348			return Arr::get($this->packageConfig, $configKey);
349			}
350
351			/**
352			* Merge the package's default configuration with the override config file
353			* supplied by the developer, if any.
354			*
355			* @return void
356			*/
357			protected function mergePackageConfiguration()
358			{
359			$defaultConfig = require self::CONFIG_PATH;
360			$currentConfig = $this->config->get('redis-sentinel', [ ]);
361
362			$this->packageConfig = array_merge($defaultConfig, $currentConfig);
363			}
364
365			/**
366			* Parse Redis Sentinel connection host definitions to create single host
367			* entries for host definitions that specify multiple hosts.
368			*
369			* @return void
370			*/
371			protected function normalizeHosts()
372			{
373			$connections = $this->config->get('database.redis-sentinel');
374
375			if (! is_array($connections)) {
376			return;
377			}
378
379			$this->config->set(
380			'database.redis-sentinel',
381			HostNormalizer::normalizeConnections($connections)
382			);
383			}
384
385			/**
386			* Remove the package's configuration from the application configuration
387			* repository.
388			*
389			* This package's configuration contains partial elements from several
390			* other component configurations. By default, the package removes its
391			* configuration after merging the values into each of the appropriate
392			* config locations for the components it initializes. This behavior
393			* prevents the artisan "config:cache" command from saving unnecessary
394			* configuration values to the cache file.
395			*
396			* @return void
397			*/
398			protected function cleanPackageConfiguration()
399			{
400			// When we're finished with the internal package configuration, break
401			// the reference so that it can be garbage-collected:
402			$this->packageConfig = null;
403
404			if ($this->config->get('redis-sentinel.clean_config', true) !== true) {
405			return;
406			}
407
408			$this->config->set('redis-sentinel', [
409			'Config merged. Set "redis-sentinel.clean_config" = false to keep.',
410			'load_config' => false, // skip loading package config when cached
411			]);
412			}
413			}
414

monospice / laravel-redis-sentinel-drivers

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