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PhabricatorExportEngine.php
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Created
Thu, Jan 9, 17:18

PhabricatorExportEngine.php
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<?php
final class PhabricatorExportEngine
extends Phobject {
private $viewer;
private $searchEngine;
private $savedQuery;
private $exportFormat;
private $filename;
private $title;
public function setViewer(PhabricatorUser $viewer) {
$this->viewer = $viewer;
return $this;
}
public function getViewer() {
return $this->viewer;
}
public function setSearchEngine(
PhabricatorApplicationSearchEngine $search_engine) {
$this->searchEngine = $search_engine;
return $this;
}
public function getSearchEngine() {
return $this->searchEngine;
}
public function setSavedQuery(PhabricatorSavedQuery $saved_query) {
$this->savedQuery = $saved_query;
return $this;
}
public function getSavedQuery() {
return $this->savedQuery;
}
public function setExportFormat(
PhabricatorExportFormat $export_format) {
$this->exportFormat = $export_format;
return $this;
}
public function getExportFormat() {
return $this->exportFormat;
}
public function setFilename($filename) {
$this->filename = $filename;
return $this;
}
public function getFilename() {
return $this->filename;
}
public function setTitle($title) {
$this->title = $title;
return $this;
}
public function getTitle() {
return $this->title;
}
public function newBulkJob(AphrontRequest $request) {
$viewer = $this->getViewer();
$engine = $this->getSearchEngine();
$saved_query = $this->getSavedQuery();
$format = $this->getExportFormat();
$params = array(
'engineClass' => get_class($engine),
'queryKey' => $saved_query->getQueryKey(),
'formatKey' => $format->getExportFormatKey(),
'title' => $this->getTitle(),
'filename' => $this->getFilename(),
);
$job = PhabricatorWorkerBulkJob::initializeNewJob(
$viewer,
new PhabricatorExportEngineBulkJobType(),
$params);
// We queue these jobs directly into STATUS_WAITING without requiring
// a confirmation from the user.
$xactions = array();
$xactions[] = id(new PhabricatorWorkerBulkJobTransaction())
->setTransactionType(PhabricatorWorkerBulkJobTransaction::TYPE_STATUS)
->setNewValue(PhabricatorWorkerBulkJob::STATUS_WAITING);
$editor = id(new PhabricatorWorkerBulkJobEditor())
->setActor($viewer)
->setContentSourceFromRequest($request)
->setContinueOnMissingFields(true)
->applyTransactions($job, $xactions);
return $job;
}
public function exportFile() {
$viewer = $this->getViewer();
$engine = $this->getSearchEngine();
$saved_query = $this->getSavedQuery();
$format = $this->getExportFormat();
$title = $this->getTitle();
$filename = $this->getFilename();
$query = $engine->buildQueryFromSavedQuery($saved_query);
$extension = $format->getFileExtension();
$mime_type = $format->getMIMEContentType();
$filename = $filename.'.'.$extension;
$format = id(clone $format)
->setViewer($viewer)
->setTitle($title);
$field_list = $engine->newExportFieldList();
$field_list = mpull($field_list, null, 'getKey');
$format->addHeaders($field_list);
// Iterate over the query results in large page so we don't have to hold
// too much stuff in memory.
$page_size = 1000;
$page_cursor = null;
do {
$pager = $engine->newPagerForSavedQuery($saved_query);
$pager->setPageSize($page_size);
if ($page_cursor !== null) {
$pager->setAfterID($page_cursor);
}
$objects = $engine->executeQuery($query, $pager);
$objects = array_values($objects);
$page_cursor = $pager->getNextPageID();
$export_data = $engine->newExport($objects);
for ($ii = 0; $ii < count($objects); $ii++) {
$format->addObject($objects[$ii], $field_list, $export_data[$ii]);
}
} while ($pager->getHasMoreResults());
$export_result = $format->newFileData();
// We have all the data in one big string and aren't actually
// streaming it, but pretending that we are allows us to actviate
// the chunk engine and store large files.
$iterator = new ArrayIterator(array($export_result));
$source = id(new PhabricatorIteratorFileUploadSource())
->setName($filename)
->setViewPolicy(PhabricatorPolicies::POLICY_NOONE)
->setMIMEType($mime_type)
->setRelativeTTL(phutil_units('60 minutes in seconds'))
->setAuthorPHID($viewer->getPHID())
->setIterator($iterator);
return $source->uploadFile();
}
}

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