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DrydockApacheWebrootBlueprint.php
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Tue, Jul 23, 11:19

DrydockApacheWebrootBlueprint.php
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<?php
/*
* Copyright 2012 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
final class DrydockApacheWebrootBlueprint
extends DrydockBlueprint {
public function getType() {
return 'webroot';
}
public function canAllocateResources() {
return true;
}
public function executeAcquireLease(
DrydockResource $resource,
DrydockLease $lease) {
$key = Filesystem::readRandomCharacters(12);
$ports = $resource->getAttribute('ports', array());
for ($ii = 2000; ; $ii++) {
if (empty($ports[$ii])) {
$ports[$ii] = $lease->getID();
$port = $ii;
break;
}
}
$resource->setAttribute('ports', $ports);
$resource->save();
$host = $resource->getAttribute('host');
$lease->setAttribute('port', $port);
$lease->setAttribute('key', $key);
$lease->save();
$config = <<<EOCONFIG
Listen *:{$port}
<VirtualHost *:{$port}>
DocumentRoot /opt/drydock/webroot/{$key}/
ServerName {$host}
</VirtualHost>
EOCONFIG;
$cmd = $this->getInterface($resource, $lease, 'command');
$cmd->execx(<<<EOSETUP
sudo mkdir -p %s &&
sudo sh -c %s &&
sudo /etc/init.d/httpd restart
EOSETUP
,
"/opt/drydock/webroot/{$key}/",
csprintf(
'echo %s > %s',
$config,
"/etc/httpd/conf.d/drydock-{$key}.conf"));
$lease->setAttribute('uri', "http://{$host}:{$port}/");
$lease->save();
}
public function executeAllocateResource() {
$resource = $this->newResourceTemplate('Apache');
$resource->setStatus(DrydockResourceStatus::STATUS_ALLOCATING);
$resource->save();
$allocator = $this->getAllocator('host');
$host = $allocator->allocate();
$cmd = $host->waitUntilActive()->getInterface('command');
$cmd->execx(<<<EOINSTALL
(yes | sudo yum install httpd) && sudo mkdir -p /opt/drydock/webroot/
EOINSTALL
);
$resource->setAttribute('lease.host', $host->getID());
$resource->setAttribute('host', $host->getResource()->getAttribute('host'));
$resource->setStatus(DrydockResourceStatus::STATUS_OPEN);
$resource->save();
return $resource;
}
public function getInterface(
DrydockResource $resource,
DrydockLease $lease,
$type) {
switch ($type) {
case 'webroot':
$iface = new DrydockApacheWebrootInterface();
$iface->setConfiguration(
array(
'uri' => $lease->getAttribute('uri'),
));
return $iface;
case 'command':
$host_lease_id = $resource->getAttribute('lease.host');
$host_lease = id(new DrydockLease())->load($host_lease_id);
$host_lease->attachResource($host_lease->loadResource());
return $host_lease->getInterface($type);
}
throw new Exception("No interface of type '{$type}'.");
}
}

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