Accept configKeyValues in TRAPsim workflow

Author: martenole

Detectors/TRD/workflow/src/TRDTrapSimulatorWorkFlow.cxx

@@ -67,6 +67,13 @@ void customize(std::vector<o2::framework::ConfigParamSpec>& workflowoptions)
   //  std::string trapsimconfighelp("Specify the Trap config to use from CCDB yes those long names like cf_pg-fpnp32_zs-s16-deh_tb24_trkl-b2p-fs1e24-ht200-qs0e24s24e23-pidlinear-pt100_ptrg.r5585");
   //  workflowoptions.push_back(ConfigParamSpec{"trapconfigname", VariantType::Int, -1, {trapsimconfighelp}});
 
+  // option allowing to set parameters
+  std::string keyvaluehelp("Semicolon separated key=value strings (e.g.: 'TRDSimParams.digithreads=4;...')");
+  workflowoptions.push_back(
+    ConfigParamSpec{"configKeyValues", VariantType::String, "", {keyvaluehelp}});
+  workflowoptions.push_back(
+    ConfigParamSpec{"configFile", VariantType::String, "", {"configuration file for configurable parameters"}});
+
   // json output
   // run2 input
   // trap configuration
@@ -83,6 +90,8 @@ WorkflowSpec defineDataProcessing(ConfigContext const& configcontext)
   // at the end. This places the processor at the beginning of the
   // workflow in the upper left corner of the GUI.
   //
+  using namespace o2::conf;
+  ConfigurableParam::updateFromString(configcontext.options().get<std::string>("configKeyValues"));
   WorkflowSpec specs;
   auto useMC = !configcontext.options().get<bool>("disable-mc");
   auto disableRootInput = configcontext.options().get<bool>("disable-root-input");