58 lines
1.4 KiB
PHP
58 lines
1.4 KiB
PHP
<?php
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declare(strict_types=1);
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namespace Phpml;
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use Phpml\Exception\SerializeException;
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use Phpml\Exception\FileException;
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class ModelManager
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{
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/**
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* @param Estimator $estimator
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* @param string $filepath
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*
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* @throws FileException
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* @throws SerializeException
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*/
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public function saveToFile(Estimator $estimator, string $filepath)
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{
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if (!is_writable(dirname($filepath))) {
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throw FileException::cantSaveFile(basename($filepath));
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}
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$serialized = serialize($estimator);
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if (empty($serialized)) {
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throw SerializeException::cantSerialize(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 FileException::cantSaveFile(basename($filepath));
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}
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}
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/**
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* @param string $filepath
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*
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* @return Estimator
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*
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* @throws FileException
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* @throws SerializeException
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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($filepath)) {
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throw FileException::cantOpenFile(basename($filepath));
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}
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$object = unserialize(file_get_contents($filepath));
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if ($object === false) {
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throw SerializeException::cantUnserialize(basename($filepath));
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}
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return $object;
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}
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}
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