/**
* exec method with the same interface as that in KWUtils, will simulate
* an execution of the condor_submit_dag executable for a few select test cases.
*
* @param string $command
* @param null|mixed $output
* @param string $chdir
* @param null|mixed $return_val
* @throws Zend_Exception
*/
public function exec($command, &$output = null, $chdir = '', &$return_val = null)
{
// just doing the same things as the actual KWUtils exec to check
// that this function will work the same as the exec function other
// than the actual exec system call
if (!empty($chdir) && is_dir($chdir)) {
if (!chdir($chdir)) {
throw new Zend_Exception('Failed to change directory: [' . $chdir . ']');
}
}
// on Linux need to add redirection to handle stderr
$command = KWUtils::escapeCommand($command);
// all test cases should have the proper syntax, verify this
if (!preg_match('/' . MIDAS_BATCHMAKE_CONDOR_SUBMIT_DAG . ".*\\'(\\S*)\\'/", $command, $matches)) {
throw new Zend_Exception('malformed condor_submit_dag command');
}
$scriptName = $matches[1];
if (preg_match('/CompileReturnNonzero.dagjob/', $scriptName)) {
$return_val = -1;
$output = array('1 error', '1');
} elseif (preg_match('/Compiles.dagjob/', $scriptName)) {
// do a bit of checking
// ensure the $scriptName exists in the $chdir
if (!file_exists($chdir . '/' . $scriptName)) {
$return_val = -1;
$output = array('1 error can not find ' . $chdir . '/' . $scriptName, '1');
return;
}
$return_val = 0;
$output = array('');
} else {
throw new Zend_Exception('Unexpected dagjob test script: ' . $scriptName);
}
}
/** clean up after tests */
public function tearDown()
{
// remove the temporary tests dir
$testTmpDir = $this->getTempDirectory() . '/batchmake/tests';
KWUtils::recursiveRemoveDirectory($testTmpDir);
// change the current dir back to the saved cwd after each test
chdir($this->cwd);
}
/** clean up after tests */
public function tearDown()
{
// remove the temporary tests dir
$tmpDir = $this->getTempDirectory() . '/' . $this->testTmpDir;
KWUtils::recursiveRemoveDirectory($tmpDir);
$this->Item->delete($this->tmpItem);
// change the current dir back to the saved cwd after each test
chdir($this->cwd);
}
/**
* exports a list of itemIds to a work dir.
*
* @param UserDao $userDao
* @param Batchmake_TaskDao $taskDao
* @param array $itemIds
* @throws Zend_Exception
*/
public function exportItemsToWorkDataDir($userDao, $taskDao, $itemIds)
{
// export the items to the work dir data dir
$datapath = $taskDao->getWorkDir() . '/' . 'data';
if (!KWUtils::mkDir($datapath)) {
throw new Zend_Exception("couldn't create data export dir: " . $datapath);
}
/** @var ExportComponent $exportComponent */
$exportComponent = MidasLoader::loadComponent('Export');
$symlink = true;
$exportComponent->exportBitstreams($userDao, $datapath, $itemIds, $symlink);
}
/**
* exec method with the same interface as that in KWUtils, will check the
* command and intercept it if it is a known command with a Mock object
* that should be used for testing, otherwise it will pass it on to KWUtils.
*
* @param type $command
* @param type $output
* @param type $chdir
* @param type $return_val
*/
public function exec($command, &$output = null, $chdir = '', &$return_val = null)
{
$matched = false;
foreach ($this->mockExes as $exeName => $mockExe) {
if (preg_match('/' . $exeName . '/', $command)) {
$matched = true;
$mockExe->exec($command, $output, $chdir, $return_val);
}
}
if (!$matched) {
KWUtils::exec($command, $output, $chdir, $return_val);
}
}
/**
* function will create a temporary batchmake config, copying over test data
* to the the locations in that config needed for the tests, returning an
* array of config property names to directory locations.
*
* @todo figure out a way to copy over Batchmake or else mock it
* @return array
* @throws Zend_Exception
*/
public function setupAndGetConfig()
{
// create a test batchmake setup in the temp dir
// and initialize test data
$tmpDir = $this->getTempDirectory();
$subDirs = array('batchmake', 'tests');
KWUtils::createSubDirectories($tmpDir . '/', $subDirs);
$configProps = array(MIDAS_BATCHMAKE_TMP_DIR_PROPERTY => $tmpDir . '/batchmake/tests/tmp', MIDAS_BATCHMAKE_BIN_DIR_PROPERTY => $tmpDir . '/batchmake/tests/bin', MIDAS_BATCHMAKE_SCRIPT_DIR_PROPERTY => $tmpDir . '/batchmake/tests/script', MIDAS_BATCHMAKE_APP_DIR_PROPERTY => $tmpDir . '/batchmake/tests/bin', MIDAS_BATCHMAKE_DATA_DIR_PROPERTY => $tmpDir . '/batchmake/tests/data', MIDAS_BATCHMAKE_CONDOR_BIN_DIR_PROPERTY => $tmpDir . '/batchmake/tests/condorbin');
// now make sure these dirs exist
// later can actually add some stuff to these dirs
foreach ($configProps as $dir) {
if (!file_exists($dir) && !KWUtils::mkDir($dir)) {
throw new Zend_Exception("couldn't create dir " . $dir);
}
}
// now copy over the bms files
$srcDir = BASE_PATH . 'modules/batchmake/tests/testfiles/script';
$targetDir = $configProps[MIDAS_BATCHMAKE_SCRIPT_DIR_PROPERTY];
$extension = '.bms';
$this->symlinkFileset($srcDir, $targetDir, $extension);
// and now the bmms
$srcDir = BASE_PATH . 'modules/batchmake/tests/testfiles/bin';
$targetDir = $configProps[MIDAS_BATCHMAKE_APP_DIR_PROPERTY];
$extension = '.bmm';
$this->symlinkFileset($srcDir, $targetDir, $extension);
// the mock object strategy requires both an interface and for
// executable files to exist on disk in a particular location,
// so here we will create symlinks to a known executable
// ls
// which should be on most systems
$params = array('ls');
$cmd = KWUtils::prepareExeccommand('which', $params);
// dir doesn't matter, just send in srcDir as it is convenient
KWUtils::exec($cmd, $output, $srcDir, $returnVal);
if ($returnVal !== 0 || !isset($output) || !isset($output[0])) {
throw new Zend_Exception('Problem finding ls on your system, used for testing');
}
$pathToLs = $output[0];
// get the applications and their path properties from the component that
// expects them
$applicationsPaths = Batchmake_KWBatchmakeComponent::getApplicationsPaths();
foreach ($applicationsPaths as $application => $pathProperty) {
// now in the place of each executable, symlink the ls exe
$link = $configProps[$pathProperty] . '/' . $application;
if (!file_exists($link) && !symlink($pathToLs, $link)) {
throw new Zend_Exception($pathToLs . ' could not be sym-linked to ' . $link);
}
}
return $configProps;
}
/**
* Create a task.
*
* @param UserDao $userDao
* @param string $tmpWorkDirRoot
* @return Batchmake_TaskDao
* @throws Zend_Exception
*/
public function createTask($userDao, $tmpWorkDirRoot)
{
if (!$userDao instanceof UserDao) {
throw new Zend_Exception('Error parameters.');
}
/** @var Batchmake_TaskDao $task */
$task = MidasLoader::newDao('TaskDao', 'batchmake');
$task->setUserId($userDao->getKey());
$this->save($task);
$userId = $task->getUserId();
$taskId = $task->getKey();
$subdirs = array(MIDAS_BATCHMAKE_SSP_DIR, $userId, $taskId);
// create a workDir based on the task and user
$workDir = KWUtils::createSubDirectories($tmpWorkDirRoot . '/', $subdirs);
$task->setWorkDir($workDir);
$this->save($task);
return $task;
}
/**
* has the same interface as KWUtils.exec, used to simulate a BatchMake
* executable for testing.
*
* @param string $command
* @param null|mixed $output
* @param string $chdir
* @param null|mixed $return_val
* @throws Zend_Exception
*/
public function exec($command, &$output = null, $chdir = '', &$return_val = null)
{
// just doing the same things as the actual KWUtils exec to check
// that this function will work the same as the exec function other
// than the actual exec system call
if (!empty($chdir) && is_dir($chdir)) {
if (!chdir($chdir)) {
throw new Zend_Exception('Failed to change directory: [' . $chdir . ']');
}
}
$command = KWUtils::escapeCommand($command);
// now look for particular commands that this Mock object can service
if (preg_match('/' . $this->compileFlag . '/', $command)) {
$this->execCompile($command, $output, $chdir, $return_val);
} elseif (preg_match('/' . $this->generateDagFlag . '/', $command)) {
$this->execGenerateCondorDag($command, $output, $chdir, $return_val);
} else {
throw new Zend_Exception('unexepected BatchMake command flag:' . $command);
}
}
/** Test that TaskModel::createTask($userDao) works */
public function testCreateTask()
{
$usersFile = $this->loadData('User', 'default', '', 'batchmake');
/** @var Batchmake_TaskModel $taskModel */
$taskModel = MidasLoader::loadModel('Task', 'batchmake');
$user1Dao = $usersFile[0];
$tmpWorkDirRoot = $this->getTempDirectory() . '/' . 'test';
KWUtils::mkDir($tmpWorkDirRoot);
$task1Dao = $taskModel->createTask($user1Dao, $tmpWorkDirRoot);
$this->assertNotEmpty($task1Dao);
$this->assertTrue($task1Dao instanceof Batchmake_TaskDao);
$userId1 = $task1Dao->getUserId();
$this->assertTrue(is_numeric($userId1));
$this->assertFalse(is_object($userId1));
$this->assertEquals($userId1, $user1Dao->getUserId());
$taskId1 = $task1Dao->getKey();
$this->assertTrue(is_numeric($taskId1));
$this->assertFalse(is_object($taskId1));
// now try a different user
$user2Dao = $usersFile[1];
$task2Dao = $taskModel->createTask($user2Dao, $tmpWorkDirRoot);
$this->assertNotEmpty($task2Dao);
$this->assertTrue($task2Dao instanceof Batchmake_TaskDao);
$userId2 = $task2Dao->getUserId();
$this->assertTrue(is_numeric($userId2));
$this->assertFalse(is_object($userId2));
$this->assertEquals($userId2, $user2Dao->getUserId());
$taskId2 = $task2Dao->getKey();
$this->assertTrue(is_numeric($taskId2));
$this->assertFalse(is_object($taskId2));
// make sure each of the tasks got a different id
$this->assertNotEquals($taskId1, $taskId2);
// now try to retrieve it by key
$task3Dao = $taskModel->load($taskId1);
$this->assertTrue($taskModel->compareDao($task1Dao, $task3Dao));
$task4Dao = $taskModel->load($taskId2);
$this->assertTrue($taskModel->compareDao($task2Dao, $task4Dao));
}
/**
* Test ExportComponentTest::exportBitstreams function using invalid input.
*
* test case 1) input parameter itemIds is not an array; expect an exception
* test case 2) use valid item id with invalid revision number; expect an exception
* test case 3) use invalid item id; expect an exception
*/
public function testExportBitStreamsInvalidCases()
{
$midas_exporttest_dir = $this->getTempDirectory() . '/exportTest';
$usersFile = $this->loadData('User', 'default');
$userDao = $this->User->load($usersFile[0]->getKey());
$this->uploadItems($userDao);
require_once BASE_PATH . '/core/controllers/components/ExportComponent.php';
$exportCompoenent = new ExportComponent();
$validFile = 'public.file';
$validItems = $this->Item->getItemsFromSearch($validFile, $userDao);
$validItemId = $validItems[0]->getKey();
$invalidRevision = 100;
$invalidItemId = 99999;
// test case 1)
try {
$exportCompoenent->exportBitstreams($userDao, $midas_exporttest_dir, $validItemId, true);
$this->fail('Expected an exception exporting component, but didn not get one');
} catch (Zend_Exception $ze) {
// if we got here, this is the correct behavior
$this->assertTrue(true);
}
// test case 2)
$inputItemIds = array();
$inputItemIds[] = $validItemId . ',' . $invalidRevision;
try {
$exportCompoenent->exportBitstreams($userDao, $midas_exporttest_dir, $inputItemIds, true);
$this->fail('Expected an exception exporting component, but did not get one');
} catch (Zend_Exception $ze) {
// if we got here, this is the correct behavior
$this->assertTrue(true);
}
// test case 3)
$inputItemIds = array();
$inputItemIds[] = $invalidItemId;
try {
$exportCompoenent->exportBitstreams($userDao, $midas_exporttest_dir, $inputItemIds, true);
$this->fail('Expected an exception exporting component, but did not get one');
} catch (Zend_Exception $ze) {
// if we got here, this is the correct behavior
$this->assertTrue(true);
}
// clean up
KWUtils::recursiveRemoveDirectory($midas_exporttest_dir);
}
/**
* will submit the passed in $dagScript to condor,
* executing in the passed in $workDir.
*
* @param string $workDir
* @param string $dagScript
* @throws Zend_Exception
*/
public function condorSubmitDag($workDir, $dagScript)
{
// Prepare command
$params = array($dagScript);
$cmd = KWUtils::prepareExecCommand($this->configCondorBinDir . '/' . MIDAS_BATCHMAKE_CONDOR_SUBMIT_DAG, $params);
// Run command
$this->executor->exec($cmd, $output, $workDir, $returnVal);
if ($returnVal !== 0) {
throw new Zend_Exception('condorSubmitDag: Failed to run: [' . $cmd . '], output: [' . implode(',', $output) . ']');
}
}
/**
* Stop DICOM server.
*
* @path /dicomserver/server/stop
* @http POST
* @param storescp_cmd (Optional) The command to run storescp
* @param dcmqrscp_cmd (Optional) The command to run dcmqrscp
* @param incoming_dir (Optional) The incoming directory to receive and process DICOM files
* @param get_command (Optional) If set, will not stop DICOM server, but only get command used to stop DICOM server in command line.
* @return
*/
public function stop($args)
{
// Only administrator can call this api
$userDao = Zend_Registry::get('userSession')->Dao;
if (!$userDao || !$userDao->isAdmin()) {
throw new Exception('Only administrator can stop DICOM server', MIDAS_INVALID_POLICY);
}
$ret = array();
$status_args = array();
if (!empty($args['storescp_cmd'])) {
$status_args['storescp_cmd'] = $args['storescp_cmd'];
}
if (!empty($args['dcmqrscp_cmd'])) {
$status_args['dcmqrscp_cmd'] = $args['dcmqrscp_cmd'];
}
$running_status = $this->status($status_args);
if ($running_status['status'] == MIDAS_DICOMSERVER_SERVER_NOT_RUNNING && !array_key_exists('get_command', $args)) {
$ret['message'] = 'DICOM server is not running now!';
return $ret;
}
$storescp_cmd = 'storescp';
if (!empty($args['storescp_cmd'])) {
$storescp_cmd = $args['storescp_cmd'];
}
$dcmqrscp_cmd = 'dcmqrscp';
if (!empty($args['dcmqrscp_cmd'])) {
$dcmqrscp_cmd = $args['dcmqrscp_cmd'];
}
if (!empty($args['incoming_dir'])) {
$incoming_dir = $args['incoming_dir'];
} else {
/** @var Dicomserver_ServerComponent $serverComponent */
$serverComponent = MidasLoader::loadComponent('Server', 'dicomserver');
$incoming_dir = $serverComponent->getDefaultReceptionDir();
}
$log_dir = $incoming_dir . MIDAS_DICOMSERVER_LOGS_DIRECTORY;
if (!file_exists($log_dir)) {
KWUtils::mkDir($log_dir, 0777);
}
$python_cmd = 'python';
$python_params = array();
$python_params[] = BASE_PATH . '/modules/dicomserver/library/serverWrapper.py';
$python_params[] = '--stop';
$python_params[] = '-i ' . $incoming_dir;
$python_params[] = '-s ' . $storescp_cmd;
$python_params[] = '-q ' . $dcmqrscp_cmd;
$stop_server_command = KWUtils::prepareExeccommand($python_cmd, $python_params);
if (array_key_exists('get_command', $args)) {
$stop_server_command_string = str_replace("'", '', $stop_server_command);
return escapeshellarg($stop_server_command_string);
}
KWUtils::exec($stop_server_command, $output, '', $returnVal);
$ret['message'] = 'Succeeded to stop DICOM C-STORE receiver and Query-Retrieve services!';
if ($returnVal) {
$exception_string = "Failed to stop DICOM server! \n Reason:" . implode("\n", $output);
throw new Zend_Exception(htmlspecialchars($exception_string, ENT_QUOTES), MIDAS_INVALID_POLICY);
}
return $ret;
}
/**
* Use thumbnailer to pre-process a bitstream to generate a jpeg file.
* Echoes an error message if a problem occurs (for the scheduler log).
*
* @param string $name name of the image to be pre-processed
* @param string $fullPath absolute path to the image to be pre-processed
* @return string
* @throws Zend_Exception
*/
public function preprocessByThumbnailer($name, $fullPath)
{
$tmpPath = UtilityComponent::getTempDirectory('thumbnailcreator');
if (!file_exists($tmpPath)) {
throw new Zend_Exception('Temporary thumbnail dir does not exist: ' . $tmpPath);
}
$copyDestination = $tmpPath . '/' . $name;
copy($fullPath, $copyDestination);
$jpegDestination = $tmpPath . '/' . $name . '.jpg';
/** @var RandomComponent $randomComponent */
$randomComponent = MidasLoader::loadComponent('Random');
while (file_exists($jpegDestination)) {
$jpegDestination = $tmpPath . '/' . $name . $randomComponent->generateInt() . '.jpg';
}
/** @var SettingModel $settingModel */
$settingModel = MidasLoader::loadModel('Setting');
$thumbnailerPath = $settingModel->getValueByName(MIDAS_THUMBNAILCREATOR_THUMBNAILER_KEY, $this->moduleName);
$thumbnailerParams = array($copyDestination, $jpegDestination);
$thumbnailerCmd = KWUtils::prepareExeccommand($thumbnailerPath, $thumbnailerParams);
if (KWUtils::isExecutable($thumbnailerPath)) {
KWUtils::exec($thumbnailerCmd);
} else {
unlink($copyDestination);
throw new Zend_Exception('Thumbnailer does not exist or you do not have execute permission. Please check the configuration of thumbnailcreator module.');
}
if (!file_exists($jpegDestination)) {
unlink($copyDestination);
throw new Zend_Exception('Problem executing thumbnailer on your system');
} else {
unlink($copyDestination);
return $jpegDestination;
}
}
/**
* Register DICOM image files (bitstreams).
*/
public function register($revision)
{
$bitstreams = $revision->getBitstreams();
if (count($bitstreams) < 1) {
return;
}
/** @var SettingModel $settingModel */
$settingModel = MidasLoader::loadModel('Setting');
$command = $settingModel->getValueByName(MIDAS_DICOMSERVER_DCMQRIDX_COMMAND_KEY, $this->moduleName);
$command = str_replace("'", '', $command);
$commandParams = array();
$receptionDirectory = $settingModel->getValueByName(MIDAS_DICOMSERVER_RECEPTION_DIRECTORY_KEY, $this->moduleName);
if (!is_writable($receptionDirectory)) {
throw new Zend_Exception('Please configure Dicom Server module correctly. Its reception directory is NOT writable!', MIDAS_INVALID_POLICY);
}
$aeStorage = $receptionDirectory . MIDAS_DICOMSERVER_PACS_DIRECTORY;
$aeStorage = str_replace("'", '', $aeStorage);
$commandParams[] = $aeStorage;
foreach ($bitstreams as $bitstream) {
$commandParams[] = $bitstream->getFullPath();
$registerCommand = KWUtils::prepareExeccommand($command, $commandParams);
array_pop($command_params);
// prepare for next iteration in the loop
KWUtils::exec($registerCommand, $output, '', $returnVal);
if ($returnVal) {
$exceptionString = "Failed to register DICOM images! \n Reason:" . implode("\n", $output);
throw new Zend_Exception(htmlspecialchars($exceptionString, ENT_QUOTES), MIDAS_INVALID_POLICY);
}
}
/** @var Dicomserver_RegistrationModel $registrationModel */
$registrationModel = MidasLoader::loadModel('Registration', 'dicomserver');
$itemId = $revision->getItemId();
if (!$registrationModel->checkByItemId($itemId)) {
$registrationModel->createRegistration($itemId);
}
}
/** tests recursiveRemoveDirectory function */
public function testRecursiveRemoveDirectory()
{
// test some basic exception handling
$this->assertFalse(KWUtils::recursiveRemoveDirectory(''));
$this->assertFalse(KWUtils::recursiveRemoveDirectory('thisstringisunlikelytobeadirectory'));
// create a two-level directory
$testParentDir = UtilityComponent::getTempDirectory() . '/KWUtilsParentDir';
mkdir($testParentDir);
$testChildDir = UtilityComponent::getTempDirectory() . '/KWUtilsParentDir/ChildDir';
mkdir($testChildDir);
copy(BASE_PATH . '/tests/testfiles/search.png', $testChildDir . '/testContent.png');
$this->assertTrue(file_exists($testChildDir . '/testContent.png'));
// recursively remove the directory
KWUtils::recursiveRemoveDirectory($testParentDir);
$this->assertFalse(file_exists($testParentDir));
}
/**
* Export bitstreams to target directory.
*
* Given itemIds, do policy check on these itemIds,
* then create symbolic links to bitstreams (or copy the bitstreams)
* in the "{targetDir}/{itemId}/" directories. If the {itemId} subdirectory
* has been existed, delete the existing one first.
* For policy check, we only check if the items are readable by the given user,
* and don't further distinguish among "can_read", "can_write", and "owner"
* levels.
*
* @param UserDao $userDao
* @param string $targetDir Target directory to export bitstreams
* @param array $itemIds Array of itemIds.
* Each element is a comma separated value,
* the 1st column is the actual item_id,
* the 2nd is revision_number (optional)
* @param bool $shouldSymLink Should we create symbolic links?
* If not, the bitstreams will be copied to the target directory
* @throws Zend_Exception
*/
public function exportBitstreams($userDao, $targetDir, $itemIds, $shouldSymLink)
{
// if the path has a slash at the end, remove it here
$targetDir = rtrim($targetDir, '/');
/** @var ItemModel $itemModel */
$itemModel = MidasLoader::loadModel('Item');
// Get items
$revisions = array();
if (!is_array($itemIds)) {
throw new Zend_Exception('Input parameter $itemIds should be an array.');
}
if (!empty($itemIds)) {
foreach ($itemIds as $itemId) {
// $itemId is a comma separated value,
// the 1st column is the actual item_id, the 2nd is revision_num (optional)
$tmpId = explode(',', $itemId);
if (empty($tmpId[0])) {
continue;
}
// delete the itemId directory if it exists which means it was exported by
// other user before
$item_export_dir = $targetDir . '/' . $itemId;
if (file_exists($item_export_dir)) {
if (!KWUtils::recursiveRemoveDirectory($item_export_dir)) {
throw new Zend_Exception($item_export_dir . ' has already existed and we cannot delete it.');
}
}
$item = $itemModel->load($tmpId[0]);
if ($item == false) {
throw new Zend_Exception('Item ' . $tmpId[0] . ' does not exist. Please check your input.');
} elseif (!$itemModel->policyCheck($item, $userDao)) {
// Do policy check in the ITEM level, ignore items which cannot be exported by the user.
continue;
}
// Use the given revision_number if it is not empty
if (isset($tmpId[1])) {
$revision = $itemModel->getRevision($item, $tmpId[1]);
if ($revision !== false) {
$revisions[] = $revision;
} else {
throw new Zend_Exception('Revision number ' . $tmpId[1] . ' for item ' . $tmpId[0] . ' does not exist. Please check your input.');
}
} else {
// Otherwise use the latest revision
$revision = $itemModel->getLastRevision($item);
if ($revision !== false) {
$revisions[] = $revision;
}
}
}
}
// process the items which pass the ITEM level policy check
if (!empty($revisions)) {
/** @var RandomComponent $randomComponent */
$randomComponent = MidasLoader::loadComponent('Random');
foreach ($revisions as $revision) {
$itemId = $revision->getItemId();
$this->_createItemDirectory($targetDir . '/' . $itemId);
// itemRevision -> bitstream is a one-to-many relation (in bitstream table)
$bitstreams = $revision->getBitstreams();
if (!empty($bitstreams)) {
foreach ($bitstreams as $bitstream) {
// if the bitstream is not an actual file, such as url type, skip it
if ($bitstream->getChecksum() == ' ') {
continue;
}
$source = $bitstream->getAssetstore()->getPath() . '/' . $bitstream->getPath();
$dest = $targetDir . '/' . $itemId . '/' . $bitstream->getName();
// create symbolic links in target directory
if ($shouldSymLink) {
// for symbolic link option,if multiple bitstreams (in a single item revision)
// have the same file name, add a '.new' suffix to distinguish them
if (file_exists($dest)) {
$dest .= '.' . $randomComponent->generateInt() . '.new';
}
if (!symlink($source, $dest)) {
throw new Zend_Exception('Cannot create symlink: ' . $dest . 'linked to' . $source);
}
} else {
// OR copy bitstreams to target directory
// for copy option, if multiple bitstreams (in a single item revision)
// have the same file name, new file(s) wil overwrite the existing file(s)
if (!copy($source, $dest)) {
throw new Zend_Exception('Cannot copy bitstream from: ' . $source . 'to: ' . $dest);
}
}
}
}
}
}
}
/**
* forwards a call to this method on to KWUtils.exec, with the same
* method signature.
*
* @param string $command
* @param null|mixed $output
* @param string $chdir
* @param null|mixed $return_val
* @throws Zend_Exception
*/
public function exec($command, &$output = null, $chdir = '', &$return_val = null)
{
KWUtils::exec($command, $output, $chdir, $return_val);
}