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diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -566,7 +566,9 @@
'DoorkeeperRemarkupRuleJIRA' => 'applications/doorkeeper/remarkup/DoorkeeperRemarkupRuleJIRA.php',
'DoorkeeperTagView' => 'applications/doorkeeper/view/DoorkeeperTagView.php',
'DoorkeeperTagsController' => 'applications/doorkeeper/controller/DoorkeeperTagsController.php',
+ 'DrydockAllocationContext' => 'applications/drydock/util/DrydockAllocationContext.php',
'DrydockAllocatorWorker' => 'applications/drydock/worker/DrydockAllocatorWorker.php',
+ 'DrydockAmazonEC2HostBlueprintImplementation' => 'applications/drydock/blueprint/DrydockAmazonEC2HostBlueprintImplementation.php',
'DrydockApacheWebrootInterface' => 'applications/drydock/interface/webroot/DrydockApacheWebrootInterface.php',
'DrydockBlueprint' => 'applications/drydock/storage/DrydockBlueprint.php',
'DrydockBlueprintController' => 'applications/drydock/controller/DrydockBlueprintController.php',
@@ -3311,7 +3313,9 @@
'DoorkeeperRemarkupRuleJIRA' => 'DoorkeeperRemarkupRule',
'DoorkeeperTagView' => 'AphrontView',
'DoorkeeperTagsController' => 'PhabricatorController',
+ 'DrydockAllocationContext' => 'Phobject',
'DrydockAllocatorWorker' => 'PhabricatorWorker',
+ 'DrydockAmazonEC2HostBlueprintImplementation' => 'DrydockBlueprintImplementation',
'DrydockApacheWebrootInterface' => 'DrydockWebrootInterface',
'DrydockBlueprint' => array(
'DrydockDAO',
diff --git a/src/applications/drydock/blueprint/DrydockAmazonEC2HostBlueprintImplementation.php b/src/applications/drydock/blueprint/DrydockAmazonEC2HostBlueprintImplementation.php
new file mode 100644
--- /dev/null
+++ b/src/applications/drydock/blueprint/DrydockAmazonEC2HostBlueprintImplementation.php
@@ -0,0 +1,514 @@
+<?php
+
+final class DrydockAmazonEC2HostBlueprintImplementation
+ extends DrydockBlueprintImplementation {
+
+ public function isEnabled() {
+ // This blueprint is only available if the Amazon EC2 keys are configured.
+ return
+ PhabricatorEnv::getEnvConfig('amazon-ec2.access-key') &&
+ PhabricatorEnv::getEnvConfig('amazon-ec2.secret-key');
+ }
+
+ public function getBlueprintName() {
+ return pht('Amazon EC2 Remote Hosts');
+ }
+
+ public function getDescription() {
+ return pht(
+ 'Allows Drydock to allocate and execute commands on '.
+ 'Amazon EC2 remote hosts.');
+ }
+
+ public function canAllocateMoreResources(array $pool) {
+ $max_count = $this->getDetail('max-count');
+ return count($pool) < $max_count;
+ }
+
+ private function getAWSEC2Future() {
+ return id(new PhutilAWSEC2Future())
+ ->setAWSKeys(
+ PhabricatorEnv::getEnvConfig('amazon-ec2.access-key'),
+ PhabricatorEnv::getEnvConfig('amazon-ec2.secret-key'))
+ ->setAWSRegion($this->getDetail('region'));
+ }
+
+ private function getAWSKeyPairName() {
+ return 'phabricator-'.$this->getDetail('keypair');
+ }
+
+ protected function executeAllocateResource(
+ DrydockResource $resource,
+ DrydockLease $lease) {
+
+ // We need to retrieve this as we need to use it for both importing the
+ // key and looking up the ID for the resource attributes.
+ $credential = id(new PassphraseCredentialQuery())
+ ->setViewer(PhabricatorUser::getOmnipotentUser())
+ ->withPHIDs(array($this->getDetail('keypair')))
+ ->executeOne();
+
+ try {
+ $existing_keys = $this->getAWSEC2Future()
+ ->setRawAWSQuery(
+ 'DescribeKeyPairs',
+ array(
+ 'KeyName.0' => $this->getAWSKeyPairName()))
+ ->resolve();
+ } catch (PhutilAWSException $ex) {
+ // The key pair does not exist, so we need to import it.
+
+ $type = PassphraseCredentialType::getTypeByConstant(
+ $credential->getCredentialType());
+ if (!$type) {
+ throw new Exception(pht('Credential has invalid type "%s"!', $type));
+ }
+
+ if (!$type->hasPublicKey()) {
+ throw new Exception(pht('Credential has no public key!'));
+ }
+
+ $public_key = $type->getPublicKey(
+ PhabricatorUser::getOmnipotentUser(),
+ $credential);
+
+ $this->getAWSEC2Future()
+ ->setRawAWSQuery(
+ 'ImportKeyPair',
+ array(
+ 'KeyName' => $this->getAWSKeyPairName(),
+ 'PublicKeyMaterial' => base64_encode($public_key)))
+ ->resolve();
+ }
+
+ $settings = array(
+ 'ImageId' => $this->getDetail('ami'),
+ 'MinCount' => 1,
+ 'MaxCount' => 1,
+ 'KeyName' => $this->getAWSKeyPairName(),
+ 'InstanceType' => $this->getDetail('size'),
+ 'SubnetId' => $this->getDetail('subnet-id')
+ );
+
+ $i = 0;
+ $security_groups = explode(',', $this->getDetail('security-group-ids'));
+ foreach ($security_groups as $security_group) {
+ $settings['SecurityGroupId.'.$i] = $security_group;
+ $i++;
+ }
+
+ $result = $this->getAWSEC2Future()
+ ->setRawAWSQuery(
+ 'RunInstances',
+ $settings)
+ ->resolve();
+
+ $instance = $result->instancesSet->item[0];
+ $instance_id = (string)$instance->instanceId;
+
+ // Allocate the resource and place it into Pending status while
+ // we wait for the instance to start.
+ $blueprint = $this->getInstance();
+ $resource
+ ->setName($instance_id)
+ ->setStatus(DrydockResourceStatus::STATUS_PENDING)
+ ->setAttributes(array(
+ 'instance-id' => $instance_id,
+ 'platform' => $this->getDetail('platform'),
+ 'path' => $this->getDetail('storage-path'),
+ 'credential' => $credential->getID()))
+ ->save();
+
+ // Wait until the instance has started.
+ while (true) {
+ try {
+ $result = $this->getAWSEC2Future()
+ ->setRawAWSQuery(
+ 'DescribeInstances',
+ array(
+ 'InstanceId.0' => $instance_id))
+ ->resolve();
+
+ $reservation = $result->reservationSet->item[0];
+ $instance = $reservation->instancesSet->item[0];
+ $instance_state = (string)$instance->instanceState->name;
+
+ if ($instance_state === 'pending') {
+ sleep(5);
+ continue;
+ } else if ($instance_state === 'running') {
+ break;
+ } else {
+ // Instance is shutting down or is otherwise terminated.
+ throw new Exception(
+ 'Allocated instance, but ended up in unexpected state \''.
+ $instance_state.'\'!');
+ }
+ } catch (PhutilAWSException $ex) {
+ // TODO: This can happen because the instance doesn't exist yet, but
+ // we should check specifically for that error.
+ sleep(5);
+ continue;
+ }
+ }
+
+ // Calculate the IP address of the instance.
+ $address = '';
+ if ($this->getDetail('allocate-elastic-ip')) {
+ $resource->setAttribute('eip-allocated', true);
+
+ try {
+ // Allocate, assign and use a public IP address.
+ $result = $this->getAWSEC2Future()
+ ->setRawAWSQuery(
+ 'AllocateAddress',
+ array(
+ 'Domain' => 'vpc'))
+ ->resolve();
+
+ $public_ip = (string)$result->publicIp;
+ $allocation_id = (string)$result->allocationId;
+
+ $resource->setAttribute('eip-allocation-id', $allocation_id);
+
+ $result = $this->getAWSEC2Future()
+ ->setRawAWSQuery(
+ 'AssociateAddress',
+ array(
+ 'InstanceId' => $instance_id,
+ 'AllocationId' => $allocation_id))
+ ->resolve();
+
+ $association_id = (string)$result->associationId;
+ $resource->setAttribute('eip-association-id', $association_id);
+
+ $address = $public_ip;
+ } catch (PhutilAWSException $ex) {
+ // We can't allocate an Elastic IP (probably because we've reached
+ // the maximum allowed on the account). Terminate the EC2 instance
+ // we just started and fail the resource allocation.
+ $this->getAWSEC2Future()
+ ->setRawAWSQuery(
+ 'TerminateInstances',
+ array(
+ 'InstanceId.0' => $instance_id))
+ ->resolve();
+
+ throw new Exception(
+ 'Unable to allocate an elastic IP for the new EC2 instance. '.
+ 'Check your AWS account limits and ensure your limit on '.
+ 'elastic IP addresses is high enough to complete the '.
+ 'resource allocation');
+ }
+ } else {
+ $resource->setAttribute('eip-allocated', false);
+
+ // Use the private IP address.
+ $result = $this->getAWSEC2Future()
+ ->setRawAWSQuery(
+ 'DescribeInstances',
+ array(
+ 'InstanceId.0' => $instance_id))
+ ->resolve();
+
+ $reservation = $result->reservationSet->item[0];
+ $instance = $reservation->instancesSet->item[0];
+
+ $address = (string)$instance->privateIpAddress;
+ }
+
+ // Update address and port attributes.
+ $resource->setAttribute('host', $address);
+ $resource->setAttribute('port', 22);
+ $resource->save();
+
+ // Wait until we get a successful SSH connection.
+ $ssh = id(new DrydockSSHCommandInterface())
+ ->setConfiguration(array(
+ 'host' => $resource->getAttribute('host'),
+ 'port' => $resource->getAttribute('port'),
+ 'credential' => $resource->getAttribute('credential'),
+ 'platform' => $resource->getAttribute('platform')));
+ $ssh->setConnectTimeout(5);
+
+ while (true) {
+ try {
+ $ssh->getExecFuture('echo "test"')->resolvex();
+ break;
+ } catch (Exception $ex) {
+ continue;
+ }
+ }
+
+ // Update the resource into open status.
+ $resource->setStatus(DrydockResourceStatus::STATUS_OPEN);
+ $resource->save();
+ return $resource;
+ }
+
+ protected function executeCloseResource(DrydockResource $resource) {
+
+ // Deallocate and release the public IP address if we allocated one.
+ if ($resource->getAttribute('eip-allocated')) {
+ $this->getAWSEC2Future()
+ ->setRawAWSQuery(
+ 'DisassociateAddress',
+ array(
+ 'AssociationId' => $resource->getAttribute('eip-association-id')))
+ ->resolve();
+
+ $this->getAWSEC2Future()
+ ->setRawAWSQuery(
+ 'ReleaseAddress',
+ array(
+ 'AllocationId' => $resource->getAttribute('eip-allocation-id')))
+ ->resolve();
+ }
+
+ // Terminate the EC2 instance.
+ $this->getAWSEC2Future()
+ ->setRawAWSQuery(
+ 'TerminateInstances',
+ array(
+ 'InstanceId.0' => $resource->getAttribute('instance-id')))
+ ->resolve();
+
+ }
+
+ protected function shouldCloseUnleasedResource(
+ DrydockAllocationContext $context,
+ DrydockResource $resource) {
+
+ return $context->getBlueprintOpenResourceCount() >
+ $this->getDetail('min-count');
+ }
+
+ protected function canAllocateLease(
+ DrydockResource $resource,
+ DrydockLease $lease) {
+ return
+ $lease->getAttribute('platform') === $resource->getAttribute('platform');
+ }
+
+ protected function shouldAllocateLease(
+ DrydockAllocationContext $context,
+ DrydockResource $resource,
+ DrydockLease $lease) {
+
+ // If the current resource can allocate a lease, allow it.
+ if ($context->getCurrentResourceLeaseCount() <
+ $this->getDetail('leases-per-instance')) {
+ return true;
+ }
+
+ // We don't have enough room under the `leases-per-instance` limit, but
+ // this limit can be bypassed if we've allocated all of the resources
+ // we allow.
+ $open_count = $context->getBlueprintOpenResourceCount();
+ if ($open_count < $this->getDetail('max-count')) {
+ return false;
+ }
+
+ // Find the resource that has the least leases.
+ $all_lease_counts_grouped = $context->getResourceLeaseCounts();
+ $minimum_lease_count = $all_lease_counts_grouped[$resource->getID()];
+ $minimum_lease_resource_id = $resource->getID();
+ foreach ($all_lease_counts_grouped as $resource_id => $lease_count) {
+ if ($minimum_lease_count > $lease_count) {
+ $minimum_lease_count = $lease_count;
+ $minimum_lease_resource_id = $resource_id;
+ }
+ }
+
+ // If we are that resource, then allow it, otherwise let the other
+ // less-leased resource run through this logic and allocate the lease.
+ return $minimum_lease_resource_id === $resource->getID();
+ }
+
+ protected function executeAcquireLease(
+ DrydockResource $resource,
+ DrydockLease $lease) {
+
+ while ($resource->getStatus() == DrydockResourceStatus::STATUS_PENDING) {
+ // This resource is still being set up by another allocator, wait until
+ // it is set to open.
+ sleep(5);
+ $resource->reload();
+ }
+
+ $platform = $resource->getAttribute('platform');
+ $path = $resource->getAttribute('path');
+
+ $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.
+ $separator = '/';
+ if ($platform === 'windows') {
+ $separator = '\\';
+ }
+
+ // Clean up the directory path a little.
+ $base_path = rtrim($path, '/');
+ $base_path = rtrim($base_path, '\\');
+ $full_path = $base_path.$separator.$lease_id;
+
+ $cmd = $lease->getInterface('command');
+
+ if ($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);
+ }
+
+ protected function executeReleaseLease(
+ DrydockResource $resource,
+ DrydockLease $lease) {
+
+ // TODO: Remove leased directory
+ }
+
+ 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')));
+ case 'filesystem':
+ return id(new DrydockSFTPFilesystemInterface())
+ ->setConfiguration(array(
+ 'host' => $resource->getAttribute('host'),
+ 'port' => $resource->getAttribute('port'),
+ 'credential' => $resource->getAttribute('credential')));
+ }
+
+ throw new Exception("No interface of type '{$type}'.");
+ }
+
+ public function getFieldSpecifications() {
+ return array(
+ 'region' => array(
+ 'name' => pht('Region'),
+ 'type' => 'text',
+ 'required' => true,
+ 'caption' => pht('e.g. %s', 'us-west-1')
+ ),
+ 'ami' => array(
+ 'name' => pht('AMI (Amazon Image)'),
+ 'type' => 'text',
+ 'required' => true,
+ 'caption' => pht('e.g. %s', 'ami-7fd3ae4f')
+ ),
+ 'keypair' => array(
+ 'name' => pht('Key Pair'),
+ 'type' => 'credential',
+ 'required' => true,
+ 'credential.provides'
+ => PassphraseCredentialTypeSSHPrivateKey::PROVIDES_TYPE,
+ 'caption' => pht(
+ 'Only the public key component is transmitted to Amazon.')
+ ),
+ 'size' => array(
+ 'name' => pht('Instance Size'),
+ 'type' => 'text',
+ 'required' => true,
+ 'caption' => pht('e.g. %s', 't2.micro')
+ ),
+ 'platform' => array(
+ 'name' => pht('Platform Name'),
+ 'type' => 'text',
+ 'required' => true,
+ 'caption' => pht('e.g. %s or %s', 'windows', 'linux')
+ ),
+ 'subnet-id' => array(
+ 'name' => pht('VPC Subnet'),
+ 'type' => 'text',
+ 'required' => true,
+ 'caption' => pht('e.g. %s', 'subnet-2a67439b')
+ ),
+ 'security-group-ids' => array(
+ 'name' => pht('VPC Security Groups'),
+ 'type' => 'text',
+ 'required' => true,
+ 'caption' => pht('e.g. %s', 'sg-3fa3491f,sg-bg18dea2')
+ ),
+ 'storage-path' => array(
+ 'name' => pht('Storage Path'),
+ 'type' => 'text',
+ 'required' => true,
+ 'caption' => pht(
+ 'A writable location on the instance where new directories / files '.
+ 'can be created and data can be stored in.')
+ ),
+ 'allocate-elastic-ip' => array(
+ 'name' => pht('Allocate Public IP'),
+ 'type' => 'bool',
+ 'caption' => pht(
+ 'If Phabricator is running in the same subnet as the allocated '.
+ 'machines, then you do not need to turn this option on. If '.
+ 'phabricator is hosted externally to Amazon EC2, then enable this '.
+ 'option to automatically allocate and assign elastic IP addresses '.
+ 'to instances so that Phabricator can SSH to them from the '.
+ 'internet (instances are still only accessible by SSH key pairs)')
+ ),
+ 'min-count' => array(
+ 'name' => pht('Minimum Instances'),
+ 'type' => 'int',
+ 'required' => true,
+ 'caption' => pht(
+ 'The minimum number of instances to keep running in '.
+ 'this pool at all times.')
+ ),
+ 'max-count' => array(
+ 'name' => pht('Maximum Instances'),
+ 'type' => 'int',
+ 'caption' => pht(
+ 'The maximum number of instances to allow running at any time. '.
+ 'If the number of instances currently running are equal to '.
+ '`max-count` and another lease is requested, Drydock will place '.
+ 'leases on existing resources and thus exceeding '.
+ '`leases-per-instance`. If this parameter is left blank, then '.
+ 'this blueprint has no limit on the number of EC2 instances it '.
+ 'can allocate.')
+ ),
+ 'leases-per-instance' => array(
+ 'name' => pht('Maximum Leases Per Instance'),
+ 'type' => 'int',
+ 'required' => true,
+ 'caption' => pht(
+ 'The soft limit on the number of leases to allocate to an '.
+ 'individual EC2 instance in the pool. Drydock will choose the '.
+ 'instance with the lowest number of leases when selecting a '.
+ 'resource to lease on. If all current EC2 instances have '.
+ '`leases-per-instance` leases on them, then Drydock will allocate '.
+ 'another EC2 instance providing `max-count` would not be exceeded.'.
+ ' If `max-count` would be exceeded, Drydock will instead '.
+ 'overallocate the lease to an existing EC2 instance and '.
+ 'exceed the limit specified here.')
+ ),
+ );
+ }
+
+}
diff --git a/src/applications/drydock/blueprint/DrydockBlueprintImplementation.php b/src/applications/drydock/blueprint/DrydockBlueprintImplementation.php
--- a/src/applications/drydock/blueprint/DrydockBlueprintImplementation.php
+++ b/src/applications/drydock/blueprint/DrydockBlueprintImplementation.php
@@ -42,7 +42,7 @@
return $lease;
}
- protected function getInstance() {
+ public function getInstance() {
if (!$this->instance) {
throw new Exception(
'Attach the blueprint instance to the implementation.');
@@ -127,6 +127,11 @@
$allocated = false;
$allocation_exception = null;
+ $context = new DrydockAllocationContext(
+ $this->getInstance(),
+ $resource,
+ $lease);
+
$resource->openTransaction();
$resource->beginReadLocking();
$resource->reload();
@@ -142,9 +147,9 @@
try {
$allocated = $this->shouldAllocateLease(
+ $context,
$resource,
- $ephemeral_lease,
- $other_leases);
+ $ephemeral_lease);
} catch (Exception $ex) {
$allocation_exception = $ex;
}
@@ -197,19 +202,15 @@
* better implemented in @{method:canAllocateLease}, which serves as a
* cheap filter before lock acquisition.
*
+ * @param DrydockAllocationContext Relevant contextual information.
* @param DrydockResource Candidate resource to allocate the lease on.
* @param DrydockLease Pending lease that wants to allocate here.
- * @param list<DrydockLease> Other allocated and acquired leases on the
- * resource. The implementation can inspect them
- * to verify it can safely add the new lease.
- * @return bool True to allocate the lease on the resource;
- * false to reject it.
* @task lease
*/
abstract protected function shouldAllocateLease(
+ DrydockAllocationContext $context,
DrydockResource $resource,
- DrydockLease $lease,
- array $other_leases);
+ DrydockLease $lease);
/**
@@ -265,10 +266,25 @@
DrydockLease $lease);
+ /**
+ * Release an allocated lease, performing any desired cleanup.
+ *
+ * After this method executes, the lease status is moved to `RELEASED`.
+ *
+ * If release fails, throw an exception.
+ *
+ * @param DrydockResource Resource to release the lease from.
+ * @param DrydockLease Lease to release.
+ * @return void
+ */
+ abstract protected function executeReleaseLease(
+ DrydockResource $resource,
+ DrydockLease $lease);
final public function releaseLease(
DrydockResource $resource,
- DrydockLease $lease) {
+ DrydockLease $lease,
+ $caused_by_closing_resource = false) {
$scope = $this->pushActiveScope(null, $lease);
$released = false;
@@ -278,6 +294,9 @@
$lease->reload();
if ($lease->getStatus() == DrydockLeaseStatus::STATUS_ACTIVE) {
+
+ $this->executeReleaseLease($resource, $lease);
+
$lease->setStatus(DrydockLeaseStatus::STATUS_RELEASED);
$lease->save();
$released = true;
@@ -290,6 +309,24 @@
throw new Exception('Unable to release lease: lease not active!');
}
+ if (!$caused_by_closing_resource) {
+ // Check to see if the resource has no more leases, and if so, ask the
+ // blueprint as to whether this resource should be closed.
+ $context = new DrydockAllocationContext(
+ $this->getInstance(),
+ $resource,
+ $lease);
+
+ if ($context->getCurrentResourceLeaseCount() === 0) {
+ if ($this->shouldCloseUnleasedResource($context, $resource)) {
+ DrydockBlueprintImplementation::writeLog(
+ $resource,
+ null,
+ pht('Closing resource because it has no more active leases'));
+ $this->closeResource($resource);
+ }
+ }
+ }
}
@@ -301,10 +338,79 @@
return true;
}
- abstract protected function executeAllocateResource(DrydockLease $lease);
+ abstract protected function executeAllocateResource(
+ DrydockResource $resource,
+ DrydockLease $lease);
+
+ /**
+ * Closes a previously allocated resource, performing any desired
+ * cleanup.
+ *
+ * After this method executes, the release status is moved to `CLOSED`.
+ *
+ * If release fails, throw an exception.
+ *
+ * @param DrydockResource Resource to close.
+ * @return void
+ */
+ abstract protected function executeCloseResource(
+ DrydockResource $resource);
+
+ /**
+ * Return whether or not a resource that now has no leases on it
+ * should be automatically closed.
+ *
+ * @param DrydockAllocationContext Relevant contextual information.
+ * @param DrydockResource The resource that has no more leases on it.
+ * @return bool
+ */
+ abstract protected function shouldCloseUnleasedResource(
+ DrydockAllocationContext $context,
+ DrydockResource $resource);
+ final public function closeResource(DrydockResource $resource) {
+ $resource->openTransaction();
+ $resource->setStatus(DrydockResourceStatus::STATUS_CLOSING);
+ $resource->save();
+
+ $statuses = array(
+ DrydockLeaseStatus::STATUS_PENDING,
+ DrydockLeaseStatus::STATUS_ACTIVE,
+ );
+
+ $leases = id(new DrydockLeaseQuery())
+ ->setViewer(PhabricatorUser::getOmnipotentUser())
+ ->withResourceIDs(array($resource->getID()))
+ ->withStatuses($statuses)
+ ->execute();
+
+ foreach ($leases as $lease) {
+ switch ($lease->getStatus()) {
+ case DrydockLeaseStatus::STATUS_PENDING:
+ $message = pht('Breaking pending lease (resource closing).');;
+ $lease->setStatus(DrydockLeaseStatus::STATUS_BROKEN);
+ break;
+ case DrydockLeaseStatus::STATUS_ACTIVE:
+ $message = pht('Releasing active lease (resource closing).');
+ $this->releaseLease($resource, $lease, true);
+ $lease->setStatus(DrydockLeaseStatus::STATUS_RELEASED);
+ break;
+ }
+ DrydockBlueprintImplementation::writeLog($resource, $lease, $message);
+ $lease->save();
+ }
+
+ $this->executeCloseResource($resource);
+
+ $resource->setStatus(DrydockResourceStatus::STATUS_CLOSED);
+ $resource->save();
+ $resource->saveTransaction();
+ }
+
+ final public function allocateResource(
+ DrydockResource $resource,
+ DrydockLease $lease) {
- final public function allocateResource(DrydockLease $lease) {
$scope = $this->pushActiveScope(null, $lease);
$this->log(
@@ -314,7 +420,7 @@
$lease->getLeaseName()));
try {
- $resource = $this->executeAllocateResource($lease);
+ $this->executeAllocateResource($resource, $lease);
$this->validateAllocatedResource($resource);
} catch (Exception $ex) {
$this->logException($ex);
@@ -401,25 +507,6 @@
return idx(self::getAllBlueprintImplementations(), $class);
}
- protected function newResourceTemplate($name) {
- $resource = id(new DrydockResource())
- ->setBlueprintPHID($this->getInstance()->getPHID())
- ->setBlueprintClass($this->getBlueprintClass())
- ->setType($this->getType())
- ->setStatus(DrydockResourceStatus::STATUS_PENDING)
- ->setName($name)
- ->save();
-
- $this->activeResource = $resource;
-
- $this->log(
- pht(
- "Blueprint '%s': Created New Template",
- $this->getBlueprintClass()));
-
- return $resource;
- }
-
/**
* Sanity checks that the blueprint is implemented properly.
*/
diff --git a/src/applications/drydock/blueprint/DrydockPreallocatedHostBlueprintImplementation.php b/src/applications/drydock/blueprint/DrydockPreallocatedHostBlueprintImplementation.php
--- a/src/applications/drydock/blueprint/DrydockPreallocatedHostBlueprintImplementation.php
+++ b/src/applications/drydock/blueprint/DrydockPreallocatedHostBlueprintImplementation.php
@@ -19,7 +19,10 @@
return false;
}
- protected function executeAllocateResource(DrydockLease $lease) {
+ protected function executeAllocateResource(
+ DrydockResource $resource,
+ DrydockLease $lease) {
+
throw new Exception("Preallocated hosts can't be dynamically allocated.");
}
@@ -31,9 +34,9 @@
}
protected function shouldAllocateLease(
+ DrydockAllocationContext $context,
DrydockResource $resource,
- DrydockLease $lease,
- array $other_leases) {
+ DrydockLease $lease) {
return true;
}
@@ -120,4 +123,22 @@
throw new Exception("No interface of type '{$type}'.");
}
+ protected function executeReleaseLease(
+ DrydockResource $resource,
+ DrydockLease $lease) {
+
+ // TODO: Remove leased directory
+ }
+
+ protected function shouldCloseUnleasedResource(
+ DrydockAllocationContext $context,
+ DrydockResource $resource) {
+
+ return false;
+ }
+
+ protected function executeCloseResource(DrydockResource $resource) {
+
+ }
+
}
diff --git a/src/applications/drydock/blueprint/DrydockWorkingCopyBlueprintImplementation.php b/src/applications/drydock/blueprint/DrydockWorkingCopyBlueprintImplementation.php
--- a/src/applications/drydock/blueprint/DrydockWorkingCopyBlueprintImplementation.php
+++ b/src/applications/drydock/blueprint/DrydockWorkingCopyBlueprintImplementation.php
@@ -26,14 +26,17 @@
}
protected function shouldAllocateLease(
+ DrydockAllocationContext $context,
DrydockResource $resource,
- DrydockLease $lease,
- array $other_leases) {
+ DrydockLease $lease) {
- return !$other_leases;
+ return $context->getCurrentResourceLeaseCount() === 0;
}
- protected function executeAllocateResource(DrydockLease $lease) {
+ protected function executeAllocateResource(
+ DrydockResource $resource,
+ DrydockLease $lease) {
+
$repository_id = $lease->getAttribute('repositoryID');
if (!$repository_id) {
throw new Exception(
@@ -74,13 +77,13 @@
$this->log(pht('Complete.'));
- $resource = $this->newResourceTemplate(
- 'Working Copy ('.$repository->getCallsign().')');
- $resource->setStatus(DrydockResourceStatus::STATUS_OPEN);
- $resource->setAttribute('lease.host', $host_lease->getID());
- $resource->setAttribute('path', $path);
- $resource->setAttribute('repositoryID', $repository->getID());
- $resource->save();
+ $resource
+ ->setName('Working Copy ('.$repository->getCallsign().')')
+ ->setStatus(DrydockResourceStatus::STATUS_OPEN)
+ ->setAttribute('lease.host', $host_lease->getID())
+ ->setAttribute('path', $path)
+ ->setAttribute('repositoryID', $repository->getID())
+ ->save();
return $resource;
}
@@ -110,4 +113,20 @@
throw new Exception("No interface of type '{$type}'.");
}
+ protected function executeReleaseLease(
+ DrydockResource $resource,
+ DrydockLease $lease) {
+ }
+
+ protected function shouldCloseUnleasedResource(
+ DrydockAllocationContext $context,
+ DrydockResource $resource) {
+
+ return false;
+ }
+
+ protected function executeCloseResource(DrydockResource $resource) {
+ // TODO: Remove leased directory
+ }
+
}
diff --git a/src/applications/drydock/constants/DrydockResourceStatus.php b/src/applications/drydock/constants/DrydockResourceStatus.php
--- a/src/applications/drydock/constants/DrydockResourceStatus.php
+++ b/src/applications/drydock/constants/DrydockResourceStatus.php
@@ -7,12 +7,16 @@
const STATUS_CLOSED = 2;
const STATUS_BROKEN = 3;
const STATUS_DESTROYED = 4;
+ const STATUS_CLOSING = 5;
+ const STATUS_ALLOCATING = 6;
public static function getNameForStatus($status) {
$map = array(
self::STATUS_PENDING => pht('Pending'),
+ self::STATUS_ALLOCATING => pht('Allocating'),
self::STATUS_OPEN => pht('Open'),
self::STATUS_CLOSED => pht('Closed'),
+ self::STATUS_CLOSING => pht('Closing'),
self::STATUS_BROKEN => pht('Broken'),
self::STATUS_DESTROYED => pht('Destroyed'),
);
@@ -23,8 +27,10 @@
public static function getAllStatuses() {
return array(
self::STATUS_PENDING,
+ self::STATUS_ALLOCATING,
self::STATUS_OPEN,
self::STATUS_CLOSED,
+ self::STATUS_CLOSING,
self::STATUS_BROKEN,
self::STATUS_DESTROYED,
);
diff --git a/src/applications/drydock/storage/DrydockResource.php b/src/applications/drydock/storage/DrydockResource.php
--- a/src/applications/drydock/storage/DrydockResource.php
+++ b/src/applications/drydock/storage/DrydockResource.php
@@ -62,36 +62,8 @@
}
public function closeResource() {
- $this->openTransaction();
- $statuses = array(
- DrydockLeaseStatus::STATUS_PENDING,
- DrydockLeaseStatus::STATUS_ACTIVE,
- );
-
- $leases = id(new DrydockLeaseQuery())
- ->setViewer(PhabricatorUser::getOmnipotentUser())
- ->withResourceIDs(array($this->getID()))
- ->withStatuses($statuses)
- ->execute();
-
- foreach ($leases as $lease) {
- switch ($lease->getStatus()) {
- case DrydockLeaseStatus::STATUS_PENDING:
- $message = pht('Breaking pending lease (resource closing).');
- $lease->setStatus(DrydockLeaseStatus::STATUS_BROKEN);
- break;
- case DrydockLeaseStatus::STATUS_ACTIVE:
- $message = pht('Releasing active lease (resource closing).');
- $lease->setStatus(DrydockLeaseStatus::STATUS_RELEASED);
- break;
- }
- DrydockBlueprintImplementation::writeLog($this, $lease, $message);
- $lease->save();
- }
-
- $this->setStatus(DrydockResourceStatus::STATUS_CLOSED);
- $this->save();
- $this->saveTransaction();
+ $blueprint = $this->getBlueprint();
+ $blueprint->closeResource($this);
}
diff --git a/src/applications/drydock/util/DrydockAllocationContext.php b/src/applications/drydock/util/DrydockAllocationContext.php
new file mode 100644
--- /dev/null
+++ b/src/applications/drydock/util/DrydockAllocationContext.php
@@ -0,0 +1,94 @@
+<?php
+
+final class DrydockAllocationContext extends Phobject {
+
+ private $blueprintOpenResourceCount;
+ private $resourceLeaseCounts;
+ private $currentResourceLeaseCount;
+
+ public function __construct(
+ DrydockBlueprint $blueprint,
+ DrydockResource $resource = null,
+ DrydockLease $lease = null) {
+
+ $table_blueprint = $blueprint->getTableName();
+ $table_resource = id(new DrydockResource())->getTableName();
+ $table_lease = id(new DrydockLease())->getTableName();
+
+ $conn = $blueprint->establishConnection('r');
+
+ $result = queryfx_one(
+ $conn,
+ 'SELECT COUNT(id) AS count '.
+ 'FROM %T '.
+ 'WHERE blueprintPHID = %s '.
+ 'AND status IN (%Ld)',
+ $table_resource,
+ $blueprint->getPHID(),
+ array(
+ DrydockResourceStatus::STATUS_PENDING,
+ DrydockResourceStatus::STATUS_OPEN,
+ DrydockResourceStatus::STATUS_ALLOCATING));
+ $this->setBlueprintOpenResourceCount($result['count']);
+
+ $results = queryfx_all(
+ $conn,
+ 'SELECT '.
+ ' resource.id AS resourceID, '.
+ ' COUNT(lease.id) AS leaseCount '.
+ 'FROM %T AS resource '.
+ 'LEFT JOIN %T AS lease '.
+ ' ON lease.resourceID = resource.id '.
+ 'WHERE resource.blueprintPHID = %s '.
+ 'AND resource.status IN (%Ld) '.
+ 'AND lease.status IN (%Ld) ',
+ $table_resource,
+ $table_lease,
+ $blueprint->getPHID(),
+ array(
+ DrydockResourceStatus::STATUS_PENDING,
+ DrydockResourceStatus::STATUS_OPEN,
+ DrydockResourceStatus::STATUS_ALLOCATING),
+ array(
+ DrydockLeaseStatus::STATUS_PENDING,
+ DrydockLeaseStatus::STATUS_ACQUIRING,
+ DrydockLeaseStatus::STATUS_ACTIVE));
+ $results = ipull($results, 'leaseCount', 'resourceID');
+ $this->setResourceLeaseCounts($results);
+
+ if ($resource !== null) {
+ $this->setCurrentResourceLeaseCount(idx($results, $resource->getID(), 0));
+ }
+
+ // $lease is not yet used, but it's passed in so we can add additional
+ // contextual statistics later.
+ }
+
+ public function setBlueprintOpenResourceCount($blueprint_resource_count) {
+ $this->blueprintOpenResourceCount = $blueprint_resource_count;
+ return $this;
+ }
+
+ public function getBlueprintOpenResourceCount() {
+ return $this->blueprintOpenResourceCount;
+ }
+
+ public function setResourceLeaseCounts($resource_lease_counts) {
+ $this->resourceLeaseCounts = $resource_lease_counts;
+ return $this;
+ }
+
+ public function getResourceLeaseCounts() {
+ return $this->resourceLeaseCounts;
+ }
+
+ public function setCurrentResourceLeaseCount($resource_lease_counts) {
+ $this->currentResourceLeaseCount = $resource_lease_counts;
+ return $this;
+ }
+
+ public function getCurrentResourceLeaseCount() {
+ return $this->currentResourceLeaseCount;
+ }
+
+}
diff --git a/src/applications/drydock/view/DrydockResourceListView.php b/src/applications/drydock/view/DrydockResourceListView.php
--- a/src/applications/drydock/view/DrydockResourceListView.php
+++ b/src/applications/drydock/view/DrydockResourceListView.php
@@ -26,6 +26,7 @@
$item->addAttribute($status);
switch ($resource->getStatus()) {
+ case DrydockResourceStatus::STATUS_ALLOCATING:
case DrydockResourceStatus::STATUS_PENDING:
$item->setBarColor('yellow');
break;
diff --git a/src/applications/drydock/worker/DrydockAllocatorWorker.php b/src/applications/drydock/worker/DrydockAllocatorWorker.php
--- a/src/applications/drydock/worker/DrydockAllocatorWorker.php
+++ b/src/applications/drydock/worker/DrydockAllocatorWorker.php
@@ -112,48 +112,133 @@
}
if (!$resource) {
- $blueprints = DrydockBlueprintImplementation
- ::getAllBlueprintImplementationsForResource($type);
+ // Attempt to use pending resources if we can.
+ $pool = id(new DrydockResource())->loadAllWhere(
+ 'type = %s AND status = %s',
+ $lease->getResourceType(),
+ DrydockResourceStatus::STATUS_PENDING);
$this->logToDrydock(
- pht('Found %d Blueprints', count($blueprints)));
+ pht('Found %d Pending Resource(s)', count($pool)));
- foreach ($blueprints as $key => $candidate_blueprint) {
- if (!$candidate_blueprint->isEnabled()) {
- unset($blueprints[$key]);
+ $candidates = array();
+ foreach ($pool as $key => $candidate) {
+ if (!isset($blueprints[$candidate->getBlueprintPHID()])) {
+ unset($pool[$key]);
continue;
}
+
+ $blueprint = $blueprints[$candidate->getBlueprintPHID()];
+ $implementation = $blueprint->getImplementation();
+
+ if ($implementation->filterResource($candidate, $lease)) {
+ $candidates[] = $candidate;
+ }
}
$this->logToDrydock(
- pht('%d Blueprints Enabled', count($blueprints)));
+ pht('%d Pending Resource(s) Remain',
+ count($candidates)));
+
+ $resource = null;
+ if ($candidates) {
+ shuffle($candidates);
+ foreach ($candidates as $candidate_resource) {
+ $blueprint = $blueprints[$candidate_resource->getBlueprintPHID()]
+ ->getImplementation();
+ if ($blueprint->allocateLease($candidate_resource, $lease)) {
+ $resource = $candidate_resource;
+ break;
+ }
+ }
+ }
+ }
+
+ if (!$resource) {
+ $blueprints = id(new DrydockBlueprintQuery())
+ ->setViewer(PhabricatorUser::getOmnipotentUser())
+ ->execute();
+ $blueprints = mpull($blueprints, 'getImplementation', 'getPHID');
+
+ $this->logToDrydock(
+ pht('Found %d Blueprints', count($blueprints)));
foreach ($blueprints as $key => $candidate_blueprint) {
- if (!$candidate_blueprint->canAllocateMoreResources($pool)) {
+ if (!$candidate_blueprint->isEnabled()) {
unset($blueprints[$key]);
continue;
}
}
$this->logToDrydock(
- pht('%d Blueprints Can Allocate', count($blueprints)));
+ pht('%d Blueprints Enabled', count($blueprints)));
- if (!$blueprints) {
- $lease->setStatus(DrydockLeaseStatus::STATUS_BROKEN);
- $lease->save();
+ $lock = PhabricatorGlobalLock::newLock('drydockallocation');
+ $lock->lock(10000);
+
+ $resources_per_blueprint = id(new DrydockResourceQuery())
+ ->setViewer(PhabricatorUser::getOmnipotentUser())
+ ->withStatuses(array(
+ DrydockResourceStatus::STATUS_PENDING,
+ DrydockResourceStatus::STATUS_OPEN,
+ DrydockResourceStatus::STATUS_ALLOCATING))
+ ->execute();
+ $resources_per_blueprint = mgroup(
+ $resources_per_blueprint,
+ 'getBlueprintPHID');
+
+ try {
+ foreach ($blueprints as $key => $candidate_blueprint) {
+ $rpool = idx($resources_per_blueprint, $key, array());
+ if (!$candidate_blueprint->canAllocateMoreResources($rpool)) {
+ unset($blueprints[$key]);
+ continue;
+ }
+ }
$this->logToDrydock(
- "There are no resources of type '{$type}' available, and no ".
- "blueprints which can allocate new ones.");
+ pht('%d Blueprints Can Allocate', count($blueprints)));
- return;
- }
+ if (!$blueprints) {
+ $lease->setStatus(DrydockLeaseStatus::STATUS_BROKEN);
+ $lease->save();
- // TODO: Rank intelligently.
- shuffle($blueprints);
+ $this->logToDrydock(
+ "There are no resources of type '{$type}' available, and no ".
+ "blueprints which can allocate new ones.");
+
+ $lock->unlock();
+ return;
+ }
- $blueprint = head($blueprints);
- $resource = $blueprint->allocateResource($lease);
+ // TODO: Rank intelligently.
+ shuffle($blueprints);
+
+ $blueprint = head($blueprints);
+
+ // Create and save the resource preemptively with STATUS_ALLOCATING
+ // before we unlock, so that other workers will correctly count the
+ // new resource "to be allocated" when determining if they can allocate
+ // more resources to a blueprint.
+ $resource = id(new DrydockResource())
+ ->setBlueprintPHID($blueprint->getInstance()->getPHID())
+ ->setType($blueprint->getType())
+ ->setName(pht('Pending Allocation'))
+ ->setStatus(DrydockResourceStatus::STATUS_ALLOCATING)
+ ->save();
+
+ $lock->unlock();
+ } catch (Exception $ex) {
+ $lock->unlock();
+ throw $ex;
+ }
+
+ try {
+ $blueprint->allocateResource($resource, $lease);
+ } catch (Exception $ex) {
+ $resource->delete();
+ throw $ex;
+ }
if (!$blueprint->allocateLease($resource, $lease)) {
// TODO: This "should" happen only if we lost a race with another lease,

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