add debug logs

Author: ehellbar

Framework/Core/src/DataProcessingDevice.cxx

@@ -1887,6 +1887,11 @@ void DataProcessingDevice::handleData(ServiceRegistryRef ref, InputChannelInfo&
         continue;
       }
       if (!dh) {
+        auto* b = reinterpret_cast<const uint32_t*>(headerData);
+        LOGP(error, "BADHDR ch={} pi={}/{} hdrSize={} payloadSize={} firstWord={:#010x} magicExpected={:#010x}",
+             info.channel ? info.channel->GetName() : "?", pi, parts.Size(),
+             parts.At(pi)->GetSize(), parts.At(pi + 1)->GetSize(),
+             b ? *b : 0u, o2::header::BaseHeader::sMagicString);
         insertInputInfo(pi, 0, InputType::Invalid, info.id);
         O2_SIGNPOST_EVENT_EMIT_ERROR(device, cid, "handle_data", "Header is not a DataHeader?");
         continue;