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DrydockPreallocatedHostBlueprint.php
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Mon, Nov 4, 06:36

DrydockPreallocatedHostBlueprint.php
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<?php
final class DrydockPreallocatedHostBlueprint extends DrydockBlueprint {
public function isEnabled() {
return true;
}
public function canAllocateMoreResources(array $pool) {
return false;
}
protected function executeAllocateResource(DrydockLease $lease) {
throw new Exception("Preallocated hosts can't be dynamically allocated.");
}
protected function canAllocateLease(
DrydockResource $resource,
DrydockLease $lease) {
return
$lease->getAttribute('platform') === $resource->getAttribute('platform');
}
protected function shouldAllocateLease(
DrydockResource $resource,
DrydockLease $lease,
array $other_leases) {
return true;
}
protected function executeAcquireLease(
DrydockResource $resource,
DrydockLease $lease) {
// Similar to DrydockLocalHostBlueprint, we create a folder
// on the remote host that the lease can use.
$lease_id = $lease->getID();
// Can't use DIRECTORY_SEPERATOR here because that is relevant to
// the platform we're currently running on, not the platform we are
// remoting to.
$separator = '/';
if ($lease->getAttribute('platform') === 'windows') {
$separator = '\\';
}
// Clean up the directory path a little.
$base_path = rtrim($resource->getAttribute('path'), '/');
$base_path = rtrim($base_path, '\\');
$full_path = $base_path.$separator.$lease_id;
$cmd = $lease->getInterface('command');
if ($lease->getAttribute('platform') !== 'windows') {
$cmd->execx('mkdir %s', $full_path);
} else {
// Windows is terrible. The mkdir command doesn't even support putting
// the path in quotes. IN QUOTES. ARGUHRGHUGHHGG!! Do some terribly
// inaccurate sanity checking since we can't safely escape the path.
if (preg_match('/^[A-Z]\\:\\\\[a-zA-Z0-9\\\\\\ ]/', $full_path) === 0) {
throw new Exception(
'Unsafe path detected for Windows platform: "'.$full_path.'".');
}
$cmd->execx('mkdir %C', $full_path);
}
$lease->setAttribute('path', $full_path);
}
public function getType() {
return 'host';
}
public function getInterface(
DrydockResource $resource,
DrydockLease $lease,
$type) {
switch ($type) {
case 'command':
return id(new DrydockSSHCommandInterface())
->setConfiguration(array(
'host' => $resource->getAttribute('host'),
'port' => $resource->getAttribute('port'),
'user' => $resource->getAttribute('user'),
'ssh-keyfile' => $resource->getAttribute('ssh-keyfile'),
'platform' => $resource->getAttribute('platform')));
}
throw new Exception("No interface of type '{$type}'.");
}
}

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