TCP: Improve behavior and documentation

image_pusher/HDF5FilePusher.cpp

@@ -10,6 +10,9 @@ void HDF5FilePusher::StartDataCollection(StartMessage &message) {
         throw JFJochException(JFJochExceptionCategory::WrongDAQState, "Image pusher is already writing images");
     writer = std::make_unique<FileWriter>(message);
     writer_future = std::async(std::launch::async, &HDF5FilePusher::WriterThread, this);
+    images_written = 0;
+    images_err = 0;
+    last_processed_image = 0;
 }
 
 bool HDF5FilePusher::EndDataCollection(const EndMessage &message) {
@@ -33,9 +36,16 @@ bool HDF5FilePusher::SendImage(const uint8_t *image_data, size_t image_size, int
         throw JFJochException(JFJochExceptionCategory::WrongDAQState, "Image pusher not ready for sending");
 
     auto deserialized = CBORStream2Deserialize(image_data, image_size);
-    if (deserialized->data_message)
-        writer->Write(*deserialized->data_message);
-    else
+    if (deserialized->data_message) {
+        try {
+            writer->Write(*deserialized->data_message);
+            images_written++;
+            if (image_number > last_processed_image)
+                last_processed_image = image_number;
+        } catch (const JFJochException &e) {
+            images_err++;
+        }
+    } else
         throw JFJochException(JFJochExceptionCategory::InputParameterInvalid,
                               "HDF5FilePusher::SendImage accepts only data image");
     return true;
@@ -70,3 +80,17 @@ std::string HDF5FilePusher::PrintSetup() const {
     std::filesystem::path currentPath = std::filesystem::current_path();
     return "HDF5FilePusher: Images are written directly to file in base directory " + currentPath.string();
 }
+
+std::optional<ImagePusherAckProgress> HDF5FilePusher::GetAckProgress() const {
+    uint64_t ack_ok = images_written;
+    uint64_t ack_bad = images_err;
+    uint64_t ack_total = ack_ok + ack_bad;
+    uint64_t last = last_processed_image;
+
+    return ImagePusherAckProgress{
+        .data_acked_ok = ack_ok,
+        .data_acked_bad = ack_bad,
+        .data_acked_total = ack_total,
+        .last_processed_images = last
+    };
+}