ModelManager   A
last analyzed

Complexity

Total Complexity 8

Size/Duplication

Total Lines 31
Duplicated Lines 0 %

Importance

Changes 0
Metric Value
wmc 8
eloc 15
dl 0
loc 31
rs 10
c 0
b 0
f 0

2 Methods

Rating   Name   Duplication   Size   Complexity  
A saveToFile() 0 14 4
A restoreFromFile() 0 12 4
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<?php
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declare(strict_types=1);
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namespace Phpml;
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use Phpml\Exception\FileException;
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use Phpml\Exception\SerializeException;
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class ModelManager
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{
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    public function saveToFile(Estimator $estimator, string $filepath): void
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    {
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        if (!is_writable(dirname($filepath))) {
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            throw new FileException(sprintf('File "%s" can\'t be saved.', basename($filepath)));
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        }
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        $serialized = serialize($estimator);
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        if (!isset($serialized[0])) {
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            throw new SerializeException(sprintf('Class "%s" can not be serialized.', gettype($estimator)));
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        }
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        $result = file_put_contents($filepath, $serialized, LOCK_EX);
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        if ($result === false) {
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            throw new FileException(sprintf('File "%s" can\'t be saved.', basename($filepath)));
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        }
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    }
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    public function restoreFromFile(string $filepath): Estimator
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    {
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        if (!file_exists($filepath) || !is_readable($filepath)) {
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            throw new FileException(sprintf('File "%s" can\'t be open.', basename($filepath)));
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        }
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        $object = unserialize((string) file_get_contents($filepath), [Estimator::class]);
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        if ($object === false) {
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            throw new SerializeException(sprintf('"%s" can not be unserialized.', basename($filepath)));
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        }
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        return $object;
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    }
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}
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