skocic/server-farm

Simulation of allocation of servers and virtual machines in a server farm

v1.0 2017-04-09 10:44 UTC

Requires

• php: >=7.0

Requires (Dev)

• phpunit/phpunit: 6.0.11
• squizlabs/php_codesniffer: 2.2.*

MIT

• Sasa Kocic

README

Simulation of allocation of servers and virtual machines in a server farm

Installation

Installed with Composer. Run this command:

composer install

Usage

Usage can be seen from tests.

In essence we create a ServerFarm object by specifying maximum server specs(cpu, ram and hdd size). We create an array of Virtual machines and store them (bigger than maximum are skipped) with storeVmachines, and then we:

• read the array of allocated machines with getServers()
• get the count with count()
• see detailed allocation list with toString()

$vmArray = [
    new VmachineModel(1, 1, 2),
    new VmachineModel(2, 2, 1),
    new VmachineModel(3, 4, 3),
    new VmachineModel(2, 1, 2),
];
$sf = new ServerFarmModel(ServerModel::create(5, 6, 7));
$sf->storeVmachines($vmArray);
$actual = $sf->toString();
$expected = "Server list\n"
    . "1. VM(1 MHz, 1 GB, 2 GB) VM(2 MHz, 2 GB, 1 GB) remains VM(1 MHz, 3 GB, 4 GB)\n"
    . "2. VM(3 MHz, 4 GB, 3 GB) remains VM(1 MHz, 2 GB, 4 GB)\n"
    . "3. VM(2 MHz, 1 GB, 2 GB) remains VM(2 MHz, 5 GB, 5 GB)\n";
$this->assertSame($expected, $actual);
$n = $sf->count();
$this->assertSame(3, $n);

Tests

1. Composer is a prerequisite for running the tests. Install composer globally, then run composer install to install required files.
2. The tests can be executed by running this command from the root directory:

$ ./vendor/bin/phpunit

Contributing

Please see CONTRIBUTING for details.

License

Please see the license file for more information.