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DrydockPreallocatedHostBlueprintImplementation.php
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Fri, Nov 29, 23:23

DrydockPreallocatedHostBlueprintImplementation.php
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<?php
final class DrydockPreallocatedHostBlueprintImplementation
extends DrydockBlueprintImplementation {
public function isEnabled() {
return true;
}
public function getBlueprintName() {
return pht('Preallocated Remote Hosts');
}
public function getDescription() {
return pht('Allows Drydock to run on specific remote hosts you configure.');
}
public function canAllocateMoreResources(array $pool) {
return false;
}
protected function executeAllocateResource(DrydockLease $lease) {
throw new Exception(
pht("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) {
// Because preallocated resources are manually created, we should verify
// we have all the information we need.
PhutilTypeSpec::checkMap(
$resource->getAttributesForTypeSpec(
array('platform', 'host', 'port', 'credential', 'path')),
array(
'platform' => 'string',
'host' => 'string',
'port' => 'string', // Value is a string from the command line
'credential' => 'string',
'path' => 'string',
));
$v_platform = $resource->getAttribute('platform');
$v_path = $resource->getAttribute('path');
// 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.
$separator = '/';
if ($v_platform === 'windows') {
$separator = '\\';
}
// Clean up the directory path a little.
$base_path = rtrim($v_path, '/');
$base_path = rtrim($base_path, '\\');
$full_path = $base_path.$separator.$lease_id;
$cmd = $lease->getInterface('command');
if ($v_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(
pht(
'Unsafe path detected for Windows platform: "%s".',
$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'),
'credential' => $resource->getAttribute('credential'),
'platform' => $resource->getAttribute('platform'),
))
->setWorkingDirectory($lease->getAttribute('path'));
case 'filesystem':
return id(new DrydockSFTPFilesystemInterface())
->setConfiguration(array(
'host' => $resource->getAttribute('host'),
'port' => $resource->getAttribute('port'),
'credential' => $resource->getAttribute('credential'),
));
}
throw new Exception(pht("No interface of type '%s'.", $type));
}
}

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