Adding macro to patch GRP for runs taken with HLT in mode A, for processing these...

diff --git a/HLT/exa/EnableHLTInGRP.C b/HLT/exa/EnableHLTInGRP.C
new file mode 100644 (file)
index 0000000..418bc92
--- /dev/null
+++ b/HLT/exa/EnableHLTInGRP.C
@@ -0,0 +1,67 @@
+// $Id: $
+
+#if !defined(__CINT__) || defined(__MAKECINT__)
+#include "Riostream.h"
+#include "AliCDBManager.h"
+#include "AliCDBEntry.h"
+#include "AliGRPObject.h"
+#include "AliDAQ.h"
+#endif
+
+/**
+ * @file EnableHLTInGRP.C
+ * @author Artur Szostak <artursz@iafrica.com>
+ * @ingroup alihlt_tutorial
+ * @brief Patches GRP to process recorded data with HT in mode A.
+ *
+ * Usage:
+ * <pre>
+ *   aliroot -b -q 'EnableHLTInGRP.C(\<runNumber\>,\<grpPath\>)'
+ * </pre>
+ * Where \<runNumber\> is the number of the run the GRP corresponds to. This
+ * can be found from the file name of the GRP entry of interest in the CDB.
+ * \<grpPath\> is the path to the local GRP/GRP/Data directory where the GRP
+ * entry to be modified is stored. Setting a value for \<grpPath\> is optional
+ * and is the current working directory by default.
+ *
+ * Data recorded in mode A will not have the HT bit set in the GRP's active
+ * detector mask. Trying to process such data with the HT framework will fail.
+ * To be able to process such runs the GRP must be downloaded and patched with
+ * this macro. It will set the HT bit in the GRP and write a new version of
+ * the GRP with and incremented version number.
+ * 
+ * @return true if the macro completed successfully and false otherwise.
+ */
+bool EnableHLTInGRP(Int_t runNumber, const char* grpPath = "local://./")
+{
+       AliCDBManager* cdb = AliCDBManager::Instance();
+       cdb->SetDefaultStorage("local://$ALICE_ROOT/OCDB");
+       cdb->SetSpecificStorage("GRP/GRP/Data", grpPath);
+       cdb->SetRun(runNumber);
+       AliCDBEntry* entry = (AliCDBEntry*)cdb->Get("GRP/GRP/Data")->Clone();
+       if (entry == NULL)
+       {
+               cerr << "ERROR: Could not fetch the GRP entry for run " << runNumber << " and path " << grpPath << endl;
+               return false;
+       }
+       AliGRPObject* grp = (AliGRPObject*)entry->GetObject();
+       if (grp == NULL)
+       {
+               cerr << "ERROR: Could not fetch the GRP object for run " << runNumber << " and path " << grpPath << endl;
+               return false;
+       }
+       grp->SetDetectorMask(grp->GetDetectorMask() | (0x1 << AliDAQ::kHLTId));
+       entry->SetVersion(entry->GetId().GetVersion() + 1);
+       cdb->Put(entry);
+       return true;
+}
+
+/// Just print the usage if no parameters are given.
+void EnableHLTInGRP()
+{
+       cout << "Usage: EnableHLTInGRP.C'(<runNumber> [, <grpPath>])'" << endl;
+       cout << "Where <runNumber> is the number of the run the GRP corresponds to." << endl;
+       cout << "This can be found from the file name of the GRP entry of interest in the CDB." << endl;
+       cout << "<grpPath> is the path to the local GRP/GRP/Data directory where the GRP entry to be modified is stored." << endl;
+       cout << "Setting a value for <grpPath> is optional and is the current working directory by default." << endl;
+}