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- <?php
- namespace OCA\Files_Versions;
- use OCP\AppFramework\Utility\ITimeFactory;
- use OCP\IConfig;
- use Psr\Log\LoggerInterface;
- class Expiration {
-
- public const NO_OBLIGATION = -1;
-
- private $timeFactory;
-
- private $retentionObligation;
-
- private $minAge;
-
- private $maxAge;
-
- private $canPurgeToSaveSpace;
-
- private $logger;
- public function __construct(IConfig $config, ITimeFactory $timeFactory, LoggerInterface $logger) {
- $this->timeFactory = $timeFactory;
- $this->logger = $logger;
- $this->retentionObligation = $config->getSystemValue('versions_retention_obligation', 'auto');
- if ($this->retentionObligation !== 'disabled') {
- $this->parseRetentionObligation();
- }
- }
-
- public function isEnabled(): bool {
- return $this->retentionObligation !== 'disabled';
- }
-
- public function shouldAutoExpire(): bool {
- return $this->minAge === self::NO_OBLIGATION
- || $this->maxAge === self::NO_OBLIGATION;
- }
-
- public function isExpired(int $timestamp, bool $quotaExceeded = false): bool {
-
- if (!$this->isEnabled()) {
- return false;
- }
-
- if ($quotaExceeded && $this->canPurgeToSaveSpace) {
- return true;
- }
- $time = $this->timeFactory->getTime();
-
-
- if ($time < $timestamp) {
- return false;
- }
-
- if ($this->maxAge !== self::NO_OBLIGATION) {
- $maxTimestamp = $time - ($this->maxAge * 86400);
- $isOlderThanMax = $timestamp < $maxTimestamp;
- } else {
- $isOlderThanMax = false;
- }
- if ($this->minAge !== self::NO_OBLIGATION) {
-
- $minTimestamp = $time - ($this->minAge * 86400);
- $isMinReached = ($timestamp < $minTimestamp) && $quotaExceeded;
- } else {
- $isMinReached = false;
- }
- return $isOlderThanMax || $isMinReached;
- }
-
- public function getMaxAgeAsTimestamp() {
- $maxAge = false;
- if ($this->isEnabled() && $this->maxAge !== self::NO_OBLIGATION) {
- $time = $this->timeFactory->getTime();
- $maxAge = $time - ($this->maxAge * 86400);
- }
- return $maxAge;
- }
-
- private function parseRetentionObligation(): void {
- $splitValues = explode(',', $this->retentionObligation);
- if (!isset($splitValues[0])) {
- $minValue = 'auto';
- } else {
- $minValue = trim($splitValues[0]);
- }
- if (!isset($splitValues[1])) {
- $maxValue = 'auto';
- } else {
- $maxValue = trim($splitValues[1]);
- }
- $isValid = true;
-
- if (!ctype_digit($minValue) && $minValue !== 'auto') {
- $isValid = false;
- $this->logger->warning(
- $minValue . ' is not a valid value for minimal versions retention obligation. Check versions_retention_obligation in your config.php. Falling back to auto.',
- ['app' => 'files_versions']
- );
- }
- if (!ctype_digit($maxValue) && $maxValue !== 'auto') {
- $isValid = false;
- $this->logger->warning(
- $maxValue . ' is not a valid value for maximal versions retention obligation. Check versions_retention_obligation in your config.php. Falling back to auto.',
- ['app' => 'files_versions']
- );
- }
- if (!$isValid) {
- $minValue = 'auto';
- $maxValue = 'auto';
- }
- if ($minValue === 'auto' && $maxValue === 'auto') {
-
- $this->minAge = self::NO_OBLIGATION;
- $this->maxAge = self::NO_OBLIGATION;
- $this->canPurgeToSaveSpace = true;
- } elseif ($minValue !== 'auto' && $maxValue === 'auto') {
-
- $this->minAge = (int)$minValue;
- $this->maxAge = self::NO_OBLIGATION;
- $this->canPurgeToSaveSpace = true;
- } elseif ($minValue === 'auto' && $maxValue !== 'auto') {
-
- $this->minAge = self::NO_OBLIGATION;
- $this->maxAge = (int)$maxValue;
- $this->canPurgeToSaveSpace = true;
- } elseif ($minValue !== 'auto' && $maxValue !== 'auto') {
-
-
- if ($maxValue < $minValue) {
- $maxValue = $minValue;
- }
- $this->minAge = (int)$minValue;
- $this->maxAge = (int)$maxValue;
- $this->canPurgeToSaveSpace = false;
- }
- }
- }
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