GaudiMP::TESSerializer Class Reference

#include <GaudiMP/TESSerializer.h>

Inheritance diagram for GaudiMP::TESSerializer:

Collaboration diagram for GaudiMP::TESSerializer:

Public Member Functions
	TESSerializer (IDataProviderSvc *svc, IAddressCreator *ac)
	Constructor. More...
void	dumpBuffer (TBufferFile &)
	Dump TES contents listed in m_itemList/m_optItemList to a TBufferFile. More...
void	loadBuffer (TBufferFile &)
	Rebuild TES from items in a TBufferFile. More...
void	addItem (const std::string &path)
	add an item to the TESSerializer's list (#notation) More...
void	addOptItem (const std::string &path)
	add an item to the TESSerializer's optional list (#notation) More...
bool	analyse (IRegistry *dir, int level) override
	Analysis callback. More...
void	checkItems ()
	print out the contents of m_itemList and m_optItemList (std::cout) More...
virtual	~TESSerializer ()
Public Member Functions inherited from IDataStoreAgent
virtual	~IDataStoreAgent ()=default
	destructor More...

Protected Member Functions
void	addItem (Items &itms, const std::string &descriptor)
	Add item to the list of items to be serialized (#notation) More...
DataStoreItem *	findItem (const std::string &path)
	Find single item identified by its path (exact match) More...

Private Types
typedef std::vector< DataStoreItem * >	Items
typedef std::vector< std::string >	ItemNames
typedef std::vector< DataObject * >	Objects

Private Attributes
IDataProviderSvc *	m_TES
	TES pointer. More...
IDataManagerSvc *	m_TESMgr
	TES pointer. More...
ItemNames	m_itemNames
	Vector of item names. More...
Items	m_itemList
	Vector of items to be saved to this stream (DataStoreItem ptrs) More...
ItemNames	m_optItemNames
	Vector of item names (std::strings) More...
Items	m_optItemList
	Vector of optional items to be saved to this stream (DataStoreItem ptrs) More...
DataStoreItem *	m_currentItem
	Current item while traversing the TES tree. More...
Objects	m_objects
	Selected list of Objects to be serialized (DataObject ptrs) More...
std::map< std::string, TClass * >	m_classMap
	Map of gROOT class information. More...
bool	m_verifyItems
	Boolean Flag as used by GaudiSvc/PersistencySvc/OutputStreamer. More...
bool	m_strict
	Boolean Flag used to determine error tolerance. More...
IAddressCreator *	m_addressCreator
	IAddress Creator for Opaque Addresses. More...

Detailed Description

Definition at line 31 of file TESSerializer.h.

Member Typedef Documentation

typedef std::vector<std::string> GaudiMP::TESSerializer::ItemNames

private

Definition at line 33 of file TESSerializer.h.

typedef std::vector<DataStoreItem*> GaudiMP::TESSerializer::Items

private

Definition at line 32 of file TESSerializer.h.

typedef std::vector<DataObject*> GaudiMP::TESSerializer::Objects

private

Definition at line 34 of file TESSerializer.h.

Constructor & Destructor Documentation

GaudiMP::TESSerializer::TESSerializer	(	IDataProviderSvc *	svc,
		IAddressCreator *	ac
	)

Constructor.

Definition at line 56 of file TESSerializer.cpp.

  : m_TES(svc)
  , m_TESMgr(dynamic_cast<IDataManagerSvc*>(svc))
  , m_currentItem(0)
  , m_verifyItems(false)
  , m_strict(false)
  , m_addressCreator(ac)
{
}

virtual GaudiMP::TESSerializer::~TESSerializer ( )

inlinevirtual

Definition at line 57 of file TESSerializer.h.

{}

Member Function Documentation

void GaudiMP::TESSerializer::addItem

(

const std::string &

path

)

add an item to the TESSerializer's list (#notation)

Add item to serialization list; ie append to std::vector of DataStoreItems.

Definition at line 374 of file TESSerializer.cpp.

                                                          {
  // #notation supported
  addItem( m_itemList, path );
}

void GaudiMP::TESSerializer::addItem ( Items &  itms, const std::string &  descriptor  )

protected

Add item to the list of items to be serialized (#notation)

Add item to output streamer list (protected)

Definition at line 327 of file TESSerializer.cpp.

                                                                             {
  // supports # notation
  int level = 0;

  std::string slevel;
  std::string obj_path;

  // Process the incoming string
  size_t sep = descriptor.rfind("#");
  if (sep > descriptor.length()) {
    // invalid sep case (# not found in string)
    obj_path = descriptor;
    slevel   = "1";
  } else {
    // valid sep case
    obj_path = descriptor.substr(0,sep);
    slevel   = descriptor.substr(sep+1);
  }

  // Convert the level string to an integer
  if ( slevel == "*" )  {
    level = 9999999;
  }
  else   {
    level = std::stoi(slevel);
  }

  // Are we verifying?
  if ( m_verifyItems )  {
    size_t idx = obj_path.find("/",1);
    while(idx != std::string::npos)  {
      std::string sub_item = obj_path.substr(0,idx);
      if ( 0 == findItem(sub_item) )   {
        cout << "... calling addItem with arg : " << sub_item << endl;
        addItem(itms, sub_item);
      }
      idx = obj_path.find("/",idx+1);
    }
  }
  DataStoreItem* item = new DataStoreItem(obj_path, level);
  //cout << "Adding TESSerializer item " << item->path()
  //   << " with " << item->depth()
  //   << " level(s)." << endl;
  itms.push_back( item );
}

void GaudiMP::TESSerializer::addOptItem

(

const std::string &

path

)

add an item to the TESSerializer's optional list (#notation)

Add optional item to output streamer list.

Definition at line 380 of file TESSerializer.cpp.

                                                             {
  // #notation supported
  addItem( m_optItemList, path);
}

bool GaudiMP::TESSerializer::analyse ( IRegistry *  dir, int  level  )

overridevirtual

Analysis callback.

Implements IDataStoreAgent.

Definition at line 45 of file TESSerializer.cpp.

                                                              {
  if ( level < m_currentItem->depth() )   {
    if ( dir->object() != 0 )   {
      m_objects.push_back(dir->object());
      return true;
    }
  }
  return false;
}

void GaudiMP::TESSerializer::checkItems

(

)

print out the contents of m_itemList and m_optItemList (std::cout)

Uses cout to print the contents of the mandatory and optional item lists.

Definition at line 386 of file TESSerializer.cpp.

                                        {
  cout << "TESSerializer m_itemList : " << m_itemList.size() << " Items"<< endl;
  for(Items::const_iterator i=m_itemList.begin(); i != m_itemList.end(); ++i)  {
    cout << "\tItem : " << (*i)->path() << endl;
  }
  cout << "TESSerializer m_optItemList : " << m_optItemList.size() << " Items" << endl;
  for(Items::const_iterator i=m_optItemList.begin(); i != m_optItemList.end(); ++i)  {
    cout << "\tItem : " << (*i)->path() << endl;
  }
}

void GaudiMP::TESSerializer::dumpBuffer

(

TBufferFile &

buffer

)

Dump TES contents listed in m_itemList/m_optItemList to a TBufferFile.

Serialize contents of TES to a TBufferFile.

Definition at line 67 of file TESSerializer.cpp.

                                                         {
  //
  //  Write all valid objects to the TBufferFile provided in the argument
  //  As objects are collected, the member variable m_classMap is filled
  //  with ROOT Class data, and is kept by the Serializer for future
  //  reference
  //
  //  @paramTBufferFile& buffer : TBufferFile passed by reference
  //          Cannot be declared inside the method, as repeated calls
  //          can cause confusion and buffer wiping.
  //
  StatusCode status;
  DataObject* obj;

  // Clear current selection
  m_objects.erase(m_objects.begin(), m_objects.end());

  // Traverse the tree and collect the requested objects
  for ( Items::iterator i = m_itemList.begin(); i != m_itemList.end(); i++ )    {
    m_currentItem = (*i);
    // cout << "Retrieving Mandatory Object : " << m_currentItem->path() << endl;
    status = m_TES->retrieveObject(m_currentItem->path(), obj);
    if ( status.isSuccess() )  {
      m_TESMgr->traverseSubTree(obj, this);
    }
    else  {
      string text("WARNING: Cannot retrieve TES object(s) for serialisation: ");
      text += m_currentItem->path();
      if ( m_strict ) {
        throw GaudiException(text + m_currentItem->path(), "", status);
      } else {
        cout << text << endl;
        // return StatusCode::FAILURE;
      }
    }
  }
  // Traverse the tree and collect the requested objects (tolerate missing items here)
  for ( Items::iterator i = m_optItemList.begin(); i != m_optItemList.end(); i++ )    {
    m_currentItem = (*i);
    // cout << "Retrieving Optional Object : " << m_currentItem->path() << endl;
    status= m_TES->retrieveObject(m_currentItem->path(), obj);
    if ( status.isSuccess() )  {
      m_TESMgr->traverseSubTree(obj, this);
    }
  }

  // cout << "TESSerializer : Beginning loop to write to TBufferFile for nObjects : " << m_objects.size() << endl;
  buffer.WriteInt(m_objects.size());

  for(Objects::iterator i = m_objects.begin(); i != m_objects.end(); ++i) {
    DataObject* pObj = (*i);    /* define pointer !pObj! to a data object */
    DataObjectPush p(pObj);             /* add the data object to the list... */

    // We build a map so gROOT has to access the whole class database as little as possible
    TClass* cl;                                                 /* announce a TClass */
    const type_info& objClass = typeid(*pObj);                  /* get the type of the data object */
    // cout << "TES Object : " << pObj->registry()->identifier() << endl;
    string objClassName = System::typeinfoName(objClass);       /* and then get the descriptive string from System */

    /* First go   : populate the class map
       Subsequent : refer to class map     */
    if (m_classMap[objClassName])   {
      cl=m_classMap[objClassName];
    } else {
      /* Map new object : pull the class name from the objects c_str() method */
      const char* clName = objClassName.c_str();
      /* Find the relevant Tclass (cl) in gROOT, and fill the map entry */
      cl = gROOT->GetClass(clName);
      m_classMap[objClassName]=cl;
    }

    /* Now, check if clname was valid... */
    if (cl==0){
      if ( m_strict ) {
        throw GaudiException("gROOT->GetClass cannot find clName", objClassName, StatusCode::FAILURE);
      } else  {
        cout << "WARNING: gROOT->GetClass fails for clname : "
            << objClassName.c_str() << endl;
        cout << "WARNING: Disregarding " << objClassName.c_str()
            << "erasing from object list" << endl;
        m_objects.erase( i );
        continue;
      }
    }

    // write object to buffer in order location-name-object
    std::string loc=pObj->registry()->identifier();
    buffer.WriteString(loc.c_str());
    buffer.WriteString(cl->GetName());
    cl->Streamer(pObj,buffer);

    /* take care of links */
    LinkManager* linkMgr = pObj->linkMgr();
    int numLinks = linkMgr->size();
    buffer.WriteInt(numLinks);
    // now write each link
    for (int it = 0; it != numLinks; it++)        {
      const string& link = linkMgr->link(it)->path();
      buffer.WriteString(link.c_str());
    }

    // now do the thing with the opaqueAddress
    // to go from string->object when recovering, will need svc_type, and clid, aswell as the string version
    IOpaqueAddress* iop = pObj->registry()->address();
    if (iop) {
      buffer.WriteInt(1);
      const string * par = iop->par();
      long svcType       = iop->svcType();
      long clid          = iop->clID();
      buffer.WriteLong(svcType);
      buffer.WriteLong(clid);
      buffer.WriteString(par->c_str());
    } else {
      buffer.WriteInt(0);
    }
    // object complete, continue in for-loop
  }

  // Final Actions
  // Write the End Flag, to avoid potential SegFaults on loadBuffer
  buffer.WriteString(SERIALIZER_END);
  // return StatusCode::SUCCESS;
}

DataStoreItem * GaudiMP::TESSerializer::findItem ( const std::string &  path )

protected

Find single item identified by its path (exact match)

Definition at line 399 of file TESSerializer.cpp.

                                                     {
  for(Items::const_iterator i=m_itemList.begin(); i != m_itemList.end(); ++i)  {
    if ( (*i)->path() == path )  return (*i);
  }
  for(Items::const_iterator j=m_optItemList.begin(); j != m_optItemList.end(); ++j)  {
    if ( (*j)->path() == path )  return (*j);
  }
  return 0;
}

void GaudiMP::TESSerializer::loadBuffer

(

TBufferFile &

buffer

)

Rebuild TES from items in a TBufferFile.

Reconstruct the TES from a given TBufferFile.

The next is equivalent to ReadObjectAny(cl) except of the 'magic!!'

Definition at line 192 of file TESSerializer.cpp.

                                                         {

  // reverse mechanism of dumps
  // buffer is: length of DataObjects vector
  //            location string
  //            type name string
  //            the object itself
  //            count of links
  //            list of links (conditional on count)
  //            flag indicating Opaque Address presence
  //            Opaque Address svcType (conditional on flag)
  //            Opaque Address clID    (conditional on flag)
  //            Opaque Address par     (conditional on flag)

  int nObjects;
  // 3 StatusCodes... for :
  //   general use : registering objects : creating OpaqueAddresses
  StatusCode sc, registerStat, createAddressStat;

  // Prepare for Reading
  buffer.SetReadMode();
  buffer.SetBufferOffset();

  buffer.ReadInt(nObjects);
  for (int i=0; i<nObjects; ++i) {
    char text[4096];
    buffer.ReadString(text,sizeof(text));
    string location(text);
    if (!location.compare("EOF")) {
      /* There was an error in serialization, but the EOF
         flag marks the endpoint in any case */
      break;
    }
    buffer.ReadString(text,sizeof(text));
    TClass* cl = gROOT->GetClass(text);
    if (cl==0){
      if ( m_strict ) {
        throw GaudiException("gROOT->GetClass cannot find clName", text, StatusCode::FAILURE);
      } else {
        cout << "TESSerializer WARNING : gROOT->GetClass fails for clname : " << location.c_str() << endl;
        continue;
      }
    }

    DataObject* obj = (DataObject*)cl->New();
    DataObjectPush push(obj); // This is magic!
    cl->Streamer(obj, buffer);


    // now restore links
    if ( obj ) {
      int nlink = 0;
      LinkManager* lnkMgr = obj->linkMgr();
      buffer.ReadInt(nlink);

      for (int j = 0; j < nlink; ++j) {
        buffer.ReadString(text,sizeof(text));
        lnkMgr->addLink(text,0);
      }
    }

    // Re-register...
    registerStat = m_TES->registerObject(location, obj);
    if (registerStat.isFailure()) {
      DataObject* dummy = NULL;
      if ( location == "/Event" ) {
          sc = m_TESMgr->setRoot(location, obj);
          if(sc.isFailure())
             throw GaudiException("Cannot set root at location " + location, "", sc);
          }
      else {
          m_TES->findObject(location, dummy);
          if(!dummy)
            m_TES->registerObject(location, obj);
          else {
            // skipping to the next object
            // (flush the remaining metadata in the buffer)
            int flag(0);
            buffer.ReadInt(flag);
            if (flag) {
              long svcType;
              buffer.ReadLong(svcType);
              long clid;
              buffer.ReadLong(clid);
              buffer.ReadString(text, sizeof(text));
            }
            continue;
          }
        }
    }
    // next is the opaque address information
    // create Generic Address using the info from the TBufferFile,
    // then create an IOpaqueAddress object using the Persistency Svc
    // IOpaque Address pointer (blank... pass the ref to the createAddress Fn)

    int flag(0);
    buffer.ReadInt(flag);
    // flag will be 0 or 1 to indicate OpaqueAddress Info
    if (flag==1) {
      // will need an IOpaqueAddress and its ref
      IOpaqueAddress* iop;
      IOpaqueAddress*& iopref = iop;
      // Read svcType, clID and par from buffer
      long svcType;
      buffer.ReadLong(svcType);

      long clid;
      buffer.ReadLong(clid);
      const CLID classid(clid);

      char * cp;
      cp = buffer.ReadString(text, sizeof(text));
      const string opaque(cp);
      // create Generic address
      // already have svcType, clID, par1.. just make dummy variables for par2, and ipar1 and 2
      const string& p2="";
      unsigned long ip1(0);
      unsigned long ip2(0);
      GenericAddress gadd(svcType, classid, opaque, p2, ip1, ip2);

      // now create the address
      createAddressStat = m_addressCreator->createAddress( gadd.svcType(), gadd.clID(), gadd.par(), gadd.ipar(), iopref );
      if (createAddressStat.isFailure()) {
        throw GaudiException("Failure in creating OpaqueAddress for reconstructed registry", "", createAddressStat);
      }
      // And finally, set this address
      obj->registry()->setAddress(iop);
    }
    // all done
  }
}

Member Data Documentation

IAddressCreator* GaudiMP::TESSerializer::m_addressCreator

private

IAddress Creator for Opaque Addresses.

Definition at line 91 of file TESSerializer.h.

std::map<std::string, TClass*> GaudiMP::TESSerializer::m_classMap

private

Map of gROOT class information.

Definition at line 85 of file TESSerializer.h.

DataStoreItem* GaudiMP::TESSerializer::m_currentItem

private

Current item while traversing the TES tree.

Definition at line 80 of file TESSerializer.h.

Items GaudiMP::TESSerializer::m_itemList

private

Vector of items to be saved to this stream (DataStoreItem ptrs)

Definition at line 74 of file TESSerializer.h.

ItemNames GaudiMP::TESSerializer::m_itemNames

private

Vector of item names.

Definition at line 72 of file TESSerializer.h.

Objects GaudiMP::TESSerializer::m_objects

private

Selected list of Objects to be serialized (DataObject ptrs)

Definition at line 82 of file TESSerializer.h.

Items GaudiMP::TESSerializer::m_optItemList

private

Vector of optional items to be saved to this stream (DataStoreItem ptrs)

Definition at line 78 of file TESSerializer.h.

ItemNames GaudiMP::TESSerializer::m_optItemNames

private

Vector of item names (std::strings)

Definition at line 76 of file TESSerializer.h.

bool GaudiMP::TESSerializer::m_strict

private

Boolean Flag used to determine error tolerance.

Definition at line 89 of file TESSerializer.h.

IDataProviderSvc* GaudiMP::TESSerializer::m_TES

private

TES pointer.

Definition at line 68 of file TESSerializer.h.

IDataManagerSvc* GaudiMP::TESSerializer::m_TESMgr

private

TES pointer.

Definition at line 70 of file TESSerializer.h.

bool GaudiMP::TESSerializer::m_verifyItems

private

Boolean Flag as used by GaudiSvc/PersistencySvc/OutputStreamer.

Definition at line 87 of file TESSerializer.h.

---

The documentation for this class was generated from the following files:

• GaudiMP/GaudiMP/TESSerializer.h
• GaudiMP/src/Lib/TESSerializer.cpp