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phab/src/infrastructure/cluster/config/PhabricatorClusterDatabasesConfigOptionType.php
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PhabricatorClusterDatabasesConfigOptionType.php
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<?php
final class PhabricatorClusterDatabasesConfigOptionType
extends PhabricatorConfigJSONOptionType {
public function validateOption(PhabricatorConfigOption $option, $value) {
if (!is_array($value)) {
throw new Exception(
pht(
'Database cluster configuration is not valid: value must be a '.
'list of database hosts.'));
}
foreach ($value as $index => $spec) {
if (!is_array($spec)) {
throw new Exception(
pht(
'Database cluster configuration is not valid: each entry in the '.
'list must be a dictionary describing a database host, but '.
'the value with index "%s" is not a dictionary.',
$index));
}
}
$masters = array();
$map = array();
foreach ($value as $index => $spec) {
try {
PhutilTypeSpec::checkMap(
$spec,
array(
'host' => 'string',
'role' => 'string',
'port' => 'optional int',
'user' => 'optional string',
'pass' => 'optional string',
'disabled' => 'optional bool',
'master' => 'optional string',
'partition' => 'optional list<string>',
'persistent' => 'optional bool',
));
} catch (Exception $ex) {
throw new Exception(
pht(
'Database cluster configuration has an invalid host '.
'specification (at index "%s"): %s.',
$index,
$ex->getMessage()));
}
$role = $spec['role'];
$host = $spec['host'];
$port = idx($spec, 'port');
switch ($role) {
case 'master':
case 'replica':
break;
default:
throw new Exception(
pht(
'Database cluster configuration describes an invalid '.
'host ("%s", at index "%s") with an unrecognized role ("%s"). '.
'Valid roles are "%s" or "%s".',
$spec['host'],
$index,
$spec['role'],
'master',
'replica'));
}
if ($role === 'master') {
$masters[] = $host;
}
// We can't guarantee that you didn't just give the same host two
// different names in DNS, but this check can catch silly copy/paste
// mistakes.
$key = "{$host}:{$port}";
if (isset($map[$key])) {
throw new Exception(
pht(
'Database cluster configuration is invalid: it describes the '.
'same host ("%s") multiple times. Each host should appear only '.
'once in the list.',
$host));
}
$map[$key] = true;
}
}
}
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