ConsumerNonce.php

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<?php

namespace IMSGlobal\LTI\ToolProvider;

class ConsumerNonce
{

    const MAX_NONCE_AGE = 30;  // in minutes

    public $expires = null;

    private $consumer = null;
    private $value = null;

    public function __construct($consumer, $value = null)
    {

        $this->consumer = $consumer;
        $this->value = $value;
        $this->expires = time() + (self::MAX_NONCE_AGE * 60);

    }

    public function load()
    {

        return $this->consumer->getDataConnector()->loadConsumerNonce($this);

    }

    public function save()
    {

        return $this->consumer->getDataConnector()->saveConsumerNonce($this);

    }

    public function getConsumer()
    {

        return $this->consumer;

    }

    public function getValue()
    {

        return $this->value;

    }

}