Tarantool\IProto

Complexity

Total Complexity

3

Size/Duplication

Total Lines	45
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	1

Test Coverage

Coverage

100%

Importance

Changes	7
Bugs	1	Features	2

1 Method

Rating	Name	Duplication	Size	Complexity
A	parseGreeting()	0	14	3

<?php

namespace Tarantool\Client;

use Tarantool\Client\Exception\Exception;

abstract class IProto
{
    const CODE = 0x00;
    const SYNC = 0x01;
    const SPACE_ID = 0x10;
    const INDEX_ID = 0x11;
    const LIMIT = 0x12;
    const OFFSET = 0x13;
    const ITERATOR = 0x14;
    const KEY = 0x20;
    const TUPLE = 0x21;
    const FUNCTION_NAME = 0x22;
    const USER_NAME = 0x23;
    const SERVER_UUID = 0x24;
    const CLUSTER_UUID = 0x25;
    const VCLOCK = 0x26;
    const EXPR = 0x27;
    const DATA = 0x30;
    const ERROR = 0x31;

    const GREETING_SIZE = 128;
    const LENGTH_SIZE = 5;

    /**
     * @param string $greeting
     *
     * @return string A session salt
     *
     * @throws Exception
     */
    public static function parseGreeting($greeting)
    {
        if ('Tarantool' !== substr($greeting, 0, 9)) {
            throw new Exception('Invalid greeting: unable to recognize Tarantool server.');
        }

        $salt = substr(base64_decode(substr($greeting, 64, 44), true), 0, 20);

        if (isset($salt[19])) {
            return $salt;
        }

        throw new Exception('Invalid greeting: unable to parse salt.');
    }
}