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<?php
namespace Icinga\Module\Director\Data\Db;
use Icinga\Module\Director\Db;
use Icinga\Module\Director\Db\Branch\Branch;
use Icinga\Module\Director\Db\Branch\BranchActivity;
use Icinga\Module\Director\Db\Branch\BranchedObject;
use Icinga\Module\Director\Db\Branch\MergeErrorDeleteMissingObject;
use Icinga\Module\Director\Db\Branch\MergeErrorModificationForMissingObject;
use Icinga\Module\Director\Db\Branch\MergeErrorRecreateOnMerge;
use Icinga\Module\Director\Db\DbUtil;
use Icinga\Module\Director\Objects\IcingaObject;
use Ramsey\Uuid\UuidInterface;
/**
* Loader for Icinga/DbObjects
*
* Is aware of branches and prefetching. I would prefer to see a StoreInterface,
* with one of the above wrapping the other. But for now, this helps to clean things
* up
*/
class DbObjectStore
{
/** @var Db */
protected $connection;
/** @var ?Branch */
protected $branch;
public function __construct(Db $connection, Branch $branch = null)
{
$this->connection = $connection;
$this->branch = $branch;
}
/**
* @param $tableName
* @param UuidInterface $uuid
* @return DbObject|null
* @throws \Icinga\Exception\NotFoundError
*/
public function load($tableName, UuidInterface $uuid)
{
$branchedObject = BranchedObject::load($this->connection, $tableName, $uuid, $this->branch);
$object = $branchedObject->getBranchedDbObject($this->connection);
if ($object === null) {
return null;
}
$object->setBeingLoadedFromDb();
return $object;
}
/**
* @param string $tableName
* @param string $arrayIdx
* @return DbObject[]|IcingaObject[]
* @throws MergeErrorRecreateOnMerge
* @throws MergeErrorDeleteMissingObject
* @throws MergeErrorModificationForMissingObject
*/
public function loadAll($tableName, $arrayIdx = 'uuid')
{
$db = $this->connection->getDbAdapter();
$class = DbObjectTypeRegistry::classByType($tableName);
$query = $db->select()->from($tableName)->order($arrayIdx);
$result = [];
foreach ($db->fetchAll($query) as $row) {
$row->uuid = DbUtil::binaryResult($row->uuid);
$result[$row->uuid] = $class::create((array) $row, $this->connection);
$result[$row->uuid]->setBeingLoadedFromDb();
}
if ($this->branch && $this->branch->isBranch()) {
$query = $db->select()
->from(BranchActivity::DB_TABLE)
->where('branch_uuid = ?', $this->connection->quoteBinary($this->branch->getUuid()->getBytes()))
->order('timestamp_ns ASC');
$rows = $db->fetchAll($query);
foreach ($rows as $row) {
$activity = BranchActivity::fromDbRow($row);
if ($activity->getObjectTable() !== $tableName) {
continue;
}
$uuid = $activity->getObjectUuid();
$binaryUuid = $uuid->getBytes();
$exists = isset($result[$binaryUuid]);
if ($activity->isActionCreate()) {
if ($exists) {
throw new MergeErrorRecreateOnMerge($activity);
} else {
$new = $activity->createDbObject($this->connection);
$new->setBeingLoadedFromDb();
$result[$binaryUuid] = $new;
}
} elseif ($activity->isActionDelete()) {
if ($exists) {
unset($result[$binaryUuid]);
} else {
throw new MergeErrorDeleteMissingObject($activity);
}
} else {
if ($exists) {
$activity->applyToDbObject($result[$binaryUuid])->setBeingLoadedFromDb();
} else {
throw new MergeErrorModificationForMissingObject($activity);
}
}
}
}
if ($arrayIdx === 'uuid') {
return $result;
}
$indexedResult = [];
foreach ($result as $object) {
$indexedResult[$object->get($arrayIdx)] = $object;
}
return $indexedResult;
}
public function exists($tableName, UuidInterface $uuid)
{
return BranchedObject::exists($this->connection, $tableName, $uuid, $this->branch->getUuid());
}
public function store(DbObject $object)
{
if ($this->branch && $this->branch->isBranch()) {
$activity = BranchActivity::forDbObject($object, $this->branch);
$this->connection->runFailSafeTransaction(function () use ($activity) {
$activity->store($this->connection);
BranchedObject::withActivity($activity, $this->connection)->store($this->connection);
});
return true;
} else {
return $object->store($this->connection);
}
}
public function delete(DbObject $object)
{
if ($this->branch && $this->branch->isBranch()) {
$activity = BranchActivity::deleteObject($object, $this->branch);
$this->connection->runFailSafeTransaction(function () use ($activity) {
$activity->store($this->connection);
BranchedObject::load(
$this->connection,
$activity->getObjectTable(),
$activity->getObjectUuid(),
$this->branch
)->delete($this->connection);
});
return true;
}
return $object->delete();
}
public function getBranch()
{
return $this->branch;
}
}
|
