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phab/src/applications/metamta/storage/__tests__/PhabricatorMailConfigTestCase.php
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PhabricatorMailConfigTestCase.php
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<?php
final class PhabricatorMailConfigTestCase
extends PhabricatorTestCase {
public function testMailerPriorities() {
$mailers = $this->newMailersWithConfig(
array(
array(
'key' => 'A',
'type' => 'test',
),
array(
'key' => 'B',
'type' => 'test',
),
));
$this->assertEqual(
array('A', 'B'),
mpull($mailers, 'getKey'));
$mailers = $this->newMailersWithConfig(
array(
array(
'key' => 'A',
'priority' => 1,
'type' => 'test',
),
array(
'key' => 'B',
'priority' => 2,
'type' => 'test',
),
));
$this->assertEqual(
array('B', 'A'),
mpull($mailers, 'getKey'));
$mailers = $this->newMailersWithConfig(
array(
array(
'key' => 'A1',
'priority' => 300,
'type' => 'test',
),
array(
'key' => 'A2',
'priority' => 300,
'type' => 'test',
),
array(
'key' => 'B',
'type' => 'test',
),
array(
'key' => 'C',
'priority' => 400,
'type' => 'test',
),
array(
'key' => 'D',
'type' => 'test',
),
));
// The "A" servers should be shuffled randomly, so either outcome is
// acceptable.
$option_1 = array('C', 'A1', 'A2', 'B', 'D');
$option_2 = array('C', 'A2', 'A1', 'B', 'D');
$actual = mpull($mailers, 'getKey');
$this->assertTrue(($actual === $option_1) || ($actual === $option_2));
// Make sure that when we're load balancing we actually send traffic to
// both servers reasonably often.
$saw_a1 = false;
$saw_a2 = false;
$attempts = 0;
while (true) {
$mailers = $this->newMailersWithConfig(
array(
array(
'key' => 'A1',
'priority' => 300,
'type' => 'test',
),
array(
'key' => 'A2',
'priority' => 300,
'type' => 'test',
),
));
$first_key = head($mailers)->getKey();
if ($first_key == 'A1') {
$saw_a1 = true;
}
if ($first_key == 'A2') {
$saw_a2 = true;
}
if ($saw_a1 && $saw_a2) {
break;
}
if ($attempts++ > 1024) {
throw new Exception(
pht(
'Load balancing between two mail servers did not select both '.
'servers after an absurd number of attempts.'));
}
}
$this->assertTrue($saw_a1 && $saw_a2);
}
private function newMailersWithConfig(array $config) {
$env = PhabricatorEnv::beginScopedEnv();
$env->overrideEnvConfig('cluster.mailers', $config);
$mailers = PhabricatorMetaMTAMail::newMailers();
unset($env);
return $mailers;
}
}
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