suma.cpp

mysql-5.0.27版本源码包

  convertNameToId(subPtr, signal);
}

void 
SumaParticipant::execGET_TABLEID_REF(Signal * signal)
{
  jamEntry();
  GetTableIdRef const * ref = (GetTableIdRef *)signal->getDataPtr();
  Uint32 senderData         = ref->senderData;
  //  Uint32 err                = ref->err;
  
  SubscriptionPtr subPtr;
  c_subscriptions.getPtr(subPtr, senderData);
  Uint32 subData = subPtr.p->m_subscriberData;
  SubCreateRef * reff = (SubCreateRef*)ref;
  /**
   * @todo: map ref->err to GrepError.
   */
  reff->err = GrepError::SELECTED_TABLE_NOT_FOUND;
  reff->subscriberData = subData;
  sendSignal(subPtr.p->m_subscriberRef,
	     GSN_SUB_CREATE_REF, 
	     signal, 
	     SubCreateRef::SignalLength,
	     JBB);
}
#endif


/*************************************************************
 *
 * Creation of subscription id's
 *
 ************************************************************/

void 
Suma::execCREATE_SUBID_REQ(Signal* signal) 
{
  jamEntry();

  CRASH_INSERTION(13001);

  CreateSubscriptionIdReq const * req =
    (CreateSubscriptionIdReq*)signal->getDataPtr();
  SubscriberPtr subbPtr;
  if(!c_subscriberPool.seize(subbPtr)){
    jam();
    sendSubIdRef(signal, GrepError::SUBSCRIPTION_ID_NOMEM);
    return;
  }

  subbPtr.p->m_subscriberRef  = signal->getSendersBlockRef(); 
  subbPtr.p->m_senderData     = req->senderData;
  subbPtr.p->m_subscriberData = subbPtr.i;

  UtilSequenceReq * utilReq = (UtilSequenceReq*)signal->getDataPtrSend();
   
  utilReq->senderData  = subbPtr.p->m_subscriberData;
  utilReq->sequenceId  = SUMA_SEQUENCE;
  utilReq->requestType = UtilSequenceReq::NextVal;
  sendSignal(DBUTIL_REF, GSN_UTIL_SEQUENCE_REQ, 
	     signal, UtilSequenceReq::SignalLength, JBB);
}

void
Suma::execUTIL_SEQUENCE_CONF(Signal* signal)
{
  jamEntry();

  DBUG_ENTER("Suma::execUTIL_SEQUENCE_CONF");
  CRASH_INSERTION(13002);

  UtilSequenceConf * conf = (UtilSequenceConf*)signal->getDataPtr();
  if(conf->requestType == UtilSequenceReq::Create) {
    jam();
    createSequenceReply(signal, conf, NULL);
    DBUG_VOID_RETURN;
  }

  Uint64 subId;
  memcpy(&subId,conf->sequenceValue,8);
  Uint32 subData = conf->senderData;

  SubscriberPtr subbPtr;
  c_subscriberPool.getPtr(subbPtr,subData);
  

  CreateSubscriptionIdConf * subconf = (CreateSubscriptionIdConf*)conf;
  subconf->subscriptionId = (Uint32)subId;
  subconf->subscriptionKey =(getOwnNodeId() << 16) | (Uint32)(subId & 0xFFFF);
  subconf->subscriberData = subbPtr.p->m_senderData;
  
  sendSignal(subbPtr.p->m_subscriberRef, GSN_CREATE_SUBID_CONF, signal,
	     CreateSubscriptionIdConf::SignalLength, JBB);

  c_subscriberPool.release(subbPtr);

  DBUG_VOID_RETURN;
}

void
Suma::execUTIL_SEQUENCE_REF(Signal* signal)
{
  jamEntry();
  DBUG_ENTER("Suma::execUTIL_SEQUENCE_REF");
  UtilSequenceRef * ref = (UtilSequenceRef*)signal->getDataPtr();

  if(ref->requestType == UtilSequenceReq::Create) {
    jam();
    createSequenceReply(signal, NULL, ref);
    DBUG_VOID_RETURN;
  }

  Uint32 subData = ref->senderData;

  SubscriberPtr subbPtr;
  c_subscriberPool.getPtr(subbPtr,subData);
  sendSubIdRef(signal, GrepError::SEQUENCE_ERROR);
  c_subscriberPool.release(subbPtr);
  DBUG_VOID_RETURN;
}//execUTIL_SEQUENCE_REF()


void
SumaParticipant::sendSubIdRef(Signal* signal, Uint32 errCode){
  jam();
  CreateSubscriptionIdRef  * ref = 
    (CreateSubscriptionIdRef *)signal->getDataPtrSend();

  ref->err = errCode;
  sendSignal(signal->getSendersBlockRef(), 
	     GSN_CREATE_SUBID_REF,
	     signal, 
	     CreateSubscriptionIdRef::SignalLength,
	     JBB);
  
  releaseSections(signal);  
  return;
}

/**********************************************************
 * Suma participant interface
 *
 * Creation of subscriptions
 */

void
SumaParticipant::execSUB_CREATE_REQ(Signal* signal) {
#ifdef NODEFAIL_DEBUG
  ndbout_c("SumaParticipant::execSUB_CREATE_REQ");
#endif
  jamEntry();                            

  CRASH_INSERTION(13003);

  const SubCreateReq req = *(SubCreateReq*)signal->getDataPtr();    
  
  const Uint32 subId   = req.subscriptionId;
  const Uint32 subKey  = req.subscriptionKey;
  const Uint32 subRef  = req.subscriberRef;
  const Uint32 subData = req.subscriberData;
  const Uint32 type    = req.subscriptionType & SubCreateReq::RemoveFlags;
  const Uint32 flags   = req.subscriptionType & SubCreateReq::GetFlags;
  const bool addTableFlag = (flags & SubCreateReq::AddTableFlag) != 0;
  const bool restartFlag  = (flags & SubCreateReq::RestartFlag)  != 0;

  const Uint32 sender = signal->getSendersBlockRef();

  Subscription key;
  key.m_subscriptionId  = subId;
  key.m_subscriptionKey = subKey;

  SubscriptionPtr subPtr;
  Ptr<SyncRecord> syncPtr;
  
  if (addTableFlag) {
    ndbrequire(restartFlag);  //TODO remove this

    if(!c_subscriptions.find(subPtr, key)) {
      jam();
      sendSubCreateRef(signal, req, GrepError::SUBSCRIPTION_NOT_FOUND);
      return;
    }
    jam();
    c_syncPool.getPtr(syncPtr, subPtr.p->m_syncPtrI);
  } else {
    // Check that id/key is unique
    if(c_subscriptions.find(subPtr, key)) {
      jam();
      sendSubCreateRef(signal, req, GrepError::SUBSCRIPTION_ID_NOT_UNIQUE);
      return;
    }
    if(!c_subscriptions.seize(subPtr)) {
      jam();
      sendSubCreateRef(signal, req, GrepError::NOSPACE_IN_POOL);
      return;
    }
    if(!c_syncPool.seize(syncPtr)) {
      jam();
      sendSubCreateRef(signal, req, GrepError::NOSPACE_IN_POOL);
      return;
    }
    jam();
    subPtr.p->m_subscriberRef    = subRef;
    subPtr.p->m_subscriberData   = subData;
    subPtr.p->m_subscriptionId   = subId;
    subPtr.p->m_subscriptionKey  = subKey;
    subPtr.p->m_subscriptionType = type;
  
    /**
     * ok to memset? Support on all compilers
     * @todo find out if memset is supported by all compilers
     */
    memset(subPtr.p->m_tables,0,MAX_TABLES);
    subPtr.p->m_maxTables    = 0;
    subPtr.p->m_currentTable = 0;
    subPtr.p->m_syncPtrI   = syncPtr.i;
    subPtr.p->m_markRemove = false;
    subPtr.p->m_nSubscribers = 0;

    c_subscriptions.add(subPtr);

    syncPtr.p->m_subscriptionPtrI = subPtr.i;
    syncPtr.p->m_doSendSyncData   = true;
    syncPtr.p->ptrI               = syncPtr.i;
    syncPtr.p->m_locked           = false;
    syncPtr.p->m_error            = false;
  }

  if (restartFlag || 
      type == SubCreateReq::TableEvent) {

    syncPtr.p->m_doSendSyncData = false;

    ndbrequire(type != SubCreateReq::SingleTableScan);
    jam();

    if (subPtr.p->m_tables[req.tableId] != 0) {
      ndbrequire(false); //TODO remove
      jam();
      sendSubCreateRef(signal, req, GrepError::SELECTED_TABLE_ALREADY_ADDED);
      return;
    }
    if (addTableFlag) {
      ndbrequire(type != SubCreateReq::TableEvent);
      jam();
    }
    subPtr.p->m_maxTables++;
    addTableId(req.tableId, subPtr, syncPtr.p);
  } else {
    switch(type){
    case SubCreateReq::SingleTableScan:
      {
	jam();
	syncPtr.p->m_tableList.append(&req.tableId, 1);
	if(signal->getNoOfSections() > 0){
	  SegmentedSectionPtr ptr;
	  signal->getSection(ptr, SubCreateReq::ATTRIBUTE_LIST);
	  LocalDataBuffer<15> attrBuf(c_dataBufferPool,syncPtr.p->m_attributeList);
	  append(attrBuf, ptr, getSectionSegmentPool());
	}
      }
    break;
#if 0
    case SubCreateReq::SelectiveTableSnapshot:
      /**
       * Tables specified by the user that does not exist
       * in the database are just ignored. No error message
       * is given, nor does the db nodes crash
       * @todo: Memory is not release here (used tableBuf)
       */
      {
	if(signal->getNoOfSections() == 0 ){
	  jam();
	  sendSubCreateRef(signal, req, GrepError::WRONG_NO_OF_SECTIONS);
	  return;
	}

	jam();      
	SegmentedSectionPtr ptr;
	signal->getSection(ptr,0);// SubCreateReq::TABLE_LIST);
	SimplePropertiesSectionReader r0(ptr, getSectionSegmentPool());
	Uint32 i=0;
	char table[MAX_TAB_NAME_SIZE];
	r0.reset();
	r0.first();
	while(true){
	  if ((r0.getValueType() != SimpleProperties::StringValue) ||
	      (r0.getValueLen() <= 0)) {
	    releaseSections(signal);
	    ndbrequire(false);
	  }
	  r0.getString(table);
	  strcpy(subPtr.p->m_tableNames[i],table);
	  i++;
	  if(!r0.next())
	    break;
	}
	releaseSections(signal);
	subPtr.p->m_maxTables    = i;
	subPtr.p->m_currentTable = 0;
	releaseSections(signal);
	convertNameToId(subPtr, signal);
	return;
      }
    break;
#endif
    case SubCreateReq::DatabaseSnapshot:
      {
	jam();
      }
    break;
    default:
      ndbrequire(false);
    }
  }

  sendSubCreateConf(signal, sender, subPtr);

  return;
}

void
SumaParticipant::sendSubCreateConf(Signal* signal, Uint32 sender,
				   SubscriptionPtr subPtr)
{
  SubCreateConf * const conf = (SubCreateConf*)signal->getDataPtrSend();      
  conf->subscriptionId       = subPtr.p->m_subscriptionId;
  conf->subscriptionKey      = subPtr.p->m_subscriptionKey;
  conf->subscriberData       = subPtr.p->m_subscriberData;
  sendSignal(sender, GSN_SUB_CREATE_CONF, signal,
	     SubCreateConf::SignalLength, JBB);
}

void
SumaParticipant::sendSubCreateRef(Signal* signal, const SubCreateReq& req, Uint32 errCode){
  jam();
  SubCreateRef * ref = (SubCreateRef *)signal->getDataPtrSend();
  ref->subscriberRef  = reference();
  ref->subscriberData = req.subscriberData;
  ref->err = errCode;
  releaseSections(signal);
  sendSignal(signal->getSendersBlockRef(), GSN_SUB_CREATE_REF, signal, 
	     SubCreateRef::SignalLength, JBB);
  return;
}

/**********************************************************
 *
 * Setting upp trigger for subscription
 *
 */

void 
SumaParticipant::execSUB_SYNC_REQ(Signal* signal) {
  jamEntry();

  CRASH_INSERTION(13004);
#ifdef EVENT_PH3_DEBUG
  ndbout_c("SumaParticipant::execSUB_SYNC_REQ");
#endif

  SubSyncReq * const req = (SubSyncReq*)signal->getDataPtr();

  SubscriptionPtr subPtr;
  Subscription key; 
  key.m_subscriptionId = req->subscriptionId;
  key.m_subscriptionKey = req->subscriptionKey;
  
  if(!c_subscriptions.find(subPtr, key)){
    jam();
    sendSubSyncRef(signal, GrepError::SUBSCRIPTION_ID_NOT_FOUND);
    return;
  }

  /**
   * @todo Tomas, do you really need to do this?
   */
  if(subPtr.p->m_subscriptionType == SubCreateReq::TableEvent) {
    jam();
    subPtr.p->m_subscriberData = req->subscriberData;
  }

  bool ok = false;
  SubscriptionData::Part part = (SubscriptionData::Part)req->part;
  
  Ptr<SyncRecord> syncPtr;
  c_syncPool.getPtr(syncPtr, subPtr.p->m_syncPtrI);
  switch(part){
  case SubscriptionData::MetaData:
    ok = true;
    jam();

    syncPtr.p->startMeta(signal);
    break;
  case SubscriptionData::TableData: {
    ok = true;
    jam();
    syncPtr.p->startScan(signal);
    break;
  }
  }
  ndbrequire(ok);
}

void
SumaParticipant::sendSubSyncRef(Signal* signal, Uint32 errCode){
  jam();
  SubSyncRef  * ref = 
    (SubSyncRef *)signal->getDataPtrSend();
  ref->err = errCode;
  sendSignal(signal->getSendersBlockRef(), 
	     GSN_SUB_SYNC_REF, 
	     signal, 
	     SubSyncRef::SignalLength,
	     JBB);
	     
  releaseSections(signal);  
  return;
}

/**********************************************************
 * Dict interface
 */

void
SumaParticipant::execGET_TABINFOREF(Signal* signal){
  jamEntry();
  GetTabInfoRef* const ref = (GetTabInfoRef*)signal->getDataPtr();
  SyncRecord* tmp = c_syncPool.getPtr(ref->senderData);
  tmp->runGET_TABINFOREF(signal);
}

void
SumaParticipant::execGET_TABINFO_CONF(Signal* signal){
  jamEntry();

  CRASH_INSERTION(13006);

  if(!assembleFragments(signal)){
    return;
  }
  
  GetTabInfoConf* conf = (GetTabInfoConf*)signal->getDataPtr();
  
  Uint32 tableId = conf->tableId;
  Uint32 senderData = conf->senderData;

  SyncRecord* tmp = c_syncPool.getPtr(senderData);
  ndbrequire(parseTable(signal, conf, tableId, tmp));
  tmp->runGET_TABINFO_CONF(signal);
}

bool
SumaParticipant::parseTable(Signal* signal, GetTabInfoConf* conf, Uint32 tableId,
			    SyncRecord* syncPtr_p){

  SegmentedSectionPtr ptr;
  signal->getSection(ptr, GetTabInfoConf::DICT_TAB_INFO);