EventLoaders: throw if input data is missing

src/modules/EventLoaderATLASpix/EventLoaderATLASpix.cpp

@@ -59,8 +59,7 @@ void EventLoaderATLASpix::initialize() {
     // Open the root directory
     DIR* directory = opendir(m_inputDirectory.c_str());
     if(directory == nullptr) {
-        LOG(ERROR) << "Directory " << m_inputDirectory << " does not exist";
-        return;
+        throw ModuleError("Directory " + m_inputDirectory + " does not exist");
     }
     dirent* entry;
 
@@ -75,10 +74,9 @@ void EventLoaderATLASpix::initialize() {
 
     // If no data was loaded, give a warning
     if(m_filename.length() == 0) {
-        LOG(WARNING) << "No data file was found for ATLASpix in " << m_inputDirectory;
-    } else {
-        LOG(STATUS) << "Opened data file for ATLASpix: (dbg)" << m_filename;
+        throw ModuleError("No data file was found for ATLASpix in " + m_inputDirectory);
     }
+    LOG(STATUS) << "Opened data file for ATLASpix: (dbg)" << m_filename;
 
     // Open the binary data file for later
     m_file.open(m_filename.c_str(), ios::in | ios::binary);

src/modules/EventLoaderCLICpix/EventLoaderCLICpix.cpp

@@ -43,8 +43,9 @@ void EventLoaderCLICpix::initialize() {
     }
 
     // If no data was loaded, give a warning
-    if(m_filename.length() == 0)
-        LOG(WARNING) << "No data file was found for CLICpix in " << inputDirectory;
+    if(m_filename.length() == 0) {
+        throw ModuleError("No data file was found for CLICpix in " + inputDirectory);
+    }
 
     // Open the data file for later
     m_file.open(m_filename.c_str());

src/modules/EventLoaderCLICpix2/EventLoaderCLICpix2.cpp

@@ -63,7 +63,7 @@ void EventLoaderCLICpix2::initialize() {
     matrix_config = clicpix2_utils::readMatrix(m_matrix);
     // If no data was loaded, give a warning
     if(m_filename.empty()) {
-        LOG(WARNING) << "No data file was found for CLICpix2 in " << inputDirectory;
+        throw ModuleError("No data file was found for CLICpix2 in " + inputDirectory);
     }
 
     // Open the data file for later

src/modules/EventLoaderTimepix1/EventLoaderTimepix1.cpp

@@ -52,8 +52,7 @@ void EventLoaderTimepix1::initialize() {
     // Open the directory
     DIR* directory = opendir(m_inputDirectory.c_str());
     if(directory == nullptr) {
-        LOG(ERROR) << "Directory " << m_inputDirectory << " does not exist";
-        return;
+        throw ModuleError("Directory " + m_inputDirectory + " does not exist");
     }
     dirent* entry;
 
@@ -72,6 +71,10 @@ void EventLoaderTimepix1::initialize() {
         }
     }
 
+    if(m_inputFilenames.empty()) {
+        throw ModuleError("Could not find any data files in directory " + m_inputDirectory);
+    }
+
     // Now sort the list of filenames by time (included in the title) from
     // earliest to latest
     std::sort(m_inputFilenames.begin(), m_inputFilenames.end(), sortByTime);

src/modules/EventLoaderTimepix3/EventLoaderTimepix3.cpp

@@ -96,9 +96,8 @@ void EventLoaderTimepix3::initialize() {
 
     // Check that we have files for this detector and sort them correctly:
     if(detector_files.empty()) {
-        LOG(ERROR) << "No data file found for detector " << m_detector->getName() << " in input directory " << std::endl
-                   << m_inputDirectory;
-        return;
+        throw ModuleError("No data file found for detector " + m_detector->getName() + " in input directory " +
+                          m_inputDirectory);
     }
 
     // Initialise null values for later