backup.cpp

mysql-5.0.22.tar.gz源码包

  {
    jam();
    masterAbort(signal, ptr);
    return;
  }//if

err:
  AbortBackupOrd *ord = (AbortBackupOrd*)signal->getDataPtrSend();
  ord->backupId = ptr.p->backupId;
  ord->backupPtr = ptr.i;
  ord->requestType = AbortBackupOrd::LogBufferFull;
  ord->senderData= ptr.i;
  execABORT_BACKUP_ORD(signal);
}

/*****************************************************************************
 * 
 * Master functionallity - Drop triggers
 *
 *****************************************************************************/

void
Backup::sendDropTrig(Signal* signal, BackupRecordPtr ptr)
{
  TablePtr tabPtr;
  if (ptr.p->masterData.dropTrig.tableId == RNIL) {
    jam();
    ptr.p->tables.first(tabPtr);
  } else {
    jam();
    ndbrequire(findTable(ptr, tabPtr, ptr.p->masterData.dropTrig.tableId));
    ptr.p->tables.next(tabPtr);
  }//if
  if (tabPtr.i != RNIL) {
    jam();
    sendDropTrig(signal, ptr, tabPtr);
  } else {
    jam();
    ptr.p->masterData.dropTrig.tableId = RNIL;

    sendStopBackup(signal, ptr);
  }//if
}

void
Backup::sendDropTrig(Signal* signal, BackupRecordPtr ptr, TablePtr tabPtr)
{
  jam();
  DropTrigReq * req = (DropTrigReq *)signal->getDataPtrSend();

  ptr.p->masterData.gsn = GSN_DROP_TRIG_REQ;
  ptr.p->masterData.sendCounter = 0;
    
  req->setConnectionPtr(ptr.i);
  req->setUserRef(reference()); // Sending to myself
  req->setRequestType(DropTrigReq::RT_USER);
  req->setIndexId(RNIL);
  req->setTriggerInfo(0);       // not used on DROP via DICT

  char triggerName[MAX_TAB_NAME_SIZE];
  Uint32 nameBuffer[2 + ((MAX_TAB_NAME_SIZE + 3) >> 2)];  // SP string
  LinearWriter w(nameBuffer, sizeof(nameBuffer) >> 2);
  LinearSectionPtr lsPtr[3];
  
  ptr.p->masterData.dropTrig.tableId = tabPtr.p->tableId;
  req->setTableId(tabPtr.p->tableId);

  for (int i = 0; i < 3; i++) {
    Uint32 id = tabPtr.p->triggerIds[i];
    req->setTriggerId(id);
    if (id != ILLEGAL_TRIGGER_ID) {
      sendSignal(DBDICT_REF, GSN_DROP_TRIG_REQ, 
		 signal, DropTrigReq::SignalLength, JBB);
    } else {
      BaseString::snprintf(triggerName, sizeof(triggerName), triggerNameFormat[i],
	       ptr.p->backupId, tabPtr.p->tableId);
      w.reset();
      w.add(CreateTrigReq::TriggerNameKey, triggerName);
      lsPtr[0].p = nameBuffer;
      lsPtr[0].sz = w.getWordsUsed();
      sendSignal(DBDICT_REF, GSN_DROP_TRIG_REQ, 
		 signal, DropTrigReq::SignalLength, JBB, lsPtr, 1);
    }
    ptr.p->masterData.sendCounter ++;
  }
}

void
Backup::execDROP_TRIG_REF(Signal* signal)
{
  jamEntry();

  DropTrigRef* ref = (DropTrigRef*)signal->getDataPtr();
  const Uint32 ptrI = ref->getConnectionPtr();
  
  BackupRecordPtr ptr;
  c_backupPool.getPtr(ptr, ptrI);
 
  //ndbrequire(ref->getErrorCode() == DropTrigRef::NoSuchTrigger);
  dropTrigReply(signal, ptr);
}

void
Backup::execDROP_TRIG_CONF(Signal* signal)
{
  jamEntry();
  
  DropTrigConf* conf = (DropTrigConf*)signal->getDataPtr();
  const Uint32 ptrI = conf->getConnectionPtr();
  
  BackupRecordPtr ptr;
  c_backupPool.getPtr(ptr, ptrI);
  
  dropTrigReply(signal, ptr);
}

void
Backup::dropTrigReply(Signal* signal, BackupRecordPtr ptr)
{

  CRASH_INSERTION((10012));

  ndbrequire(ptr.p->masterRef == reference());
  ndbrequire(ptr.p->masterData.gsn == GSN_DROP_TRIG_REQ);
  ndbrequire(ptr.p->masterData.sendCounter.done() == false);
  
  ptr.p->masterData.sendCounter--;
  if(ptr.p->masterData.sendCounter.done() == false){
    jam();
    return;
  }//if
  
  sendDropTrig(signal, ptr); // recursive next
}

/*****************************************************************************
 * 
 * Master functionallity - Stop backup
 *
 *****************************************************************************/
void
Backup::execSTOP_BACKUP_REF(Signal* signal)
{
  jamEntry();

  StopBackupRef* ref = (StopBackupRef*)signal->getDataPtr();
  const Uint32 ptrI = ref->backupPtr;
  //const Uint32 backupId = ref->backupId;
  const Uint32 nodeId = ref->nodeId;
  
  BackupRecordPtr ptr;
  c_backupPool.getPtr(ptr, ptrI);

  ptr.p->setErrorCode(ref->errorCode);
  stopBackupReply(signal, ptr, nodeId);
}

void
Backup::sendStopBackup(Signal* signal, BackupRecordPtr ptr)
{
  jam();

  StopBackupReq* stop = (StopBackupReq*)signal->getDataPtrSend();
  stop->backupPtr = ptr.i;
  stop->backupId = ptr.p->backupId;
  stop->startGCP = ptr.p->startGCP;
  stop->stopGCP = ptr.p->stopGCP;

  ptr.p->masterData.gsn = GSN_STOP_BACKUP_REQ;
  ptr.p->masterData.sendCounter = ptr.p->nodes;
  NodeReceiverGroup rg(BACKUP, ptr.p->nodes);
  sendSignal(rg, GSN_STOP_BACKUP_REQ, signal, 
	     StopBackupReq::SignalLength, JBB);
}

void
Backup::execSTOP_BACKUP_CONF(Signal* signal)
{
  jamEntry();
  
  StopBackupConf* conf = (StopBackupConf*)signal->getDataPtr();
  const Uint32 ptrI = conf->backupPtr;
  //const Uint32 backupId = conf->backupId;
  const Uint32 nodeId = refToNode(signal->senderBlockRef());
  
  BackupRecordPtr ptr;
  c_backupPool.getPtr(ptr, ptrI);

  ptr.p->noOfLogBytes += conf->noOfLogBytes;
  ptr.p->noOfLogRecords += conf->noOfLogRecords;
  
  stopBackupReply(signal, ptr, nodeId);
}

void
Backup::stopBackupReply(Signal* signal, BackupRecordPtr ptr, Uint32 nodeId)
{
  CRASH_INSERTION((10013));

  if (!haveAllSignals(ptr, GSN_STOP_BACKUP_REQ, nodeId)) {
    jam();
    return;
  }

  sendAbortBackupOrd(signal, ptr, AbortBackupOrd::BackupComplete);
  
  if(!ptr.p->checkError())
  {
    if (SEND_BACKUP_COMPLETED_FLAG(ptr.p->flags))
    {
      BackupCompleteRep * rep = (BackupCompleteRep*)signal->getDataPtrSend();
      rep->backupId = ptr.p->backupId;
      rep->senderData = ptr.p->clientData;
      rep->startGCP = ptr.p->startGCP;
      rep->stopGCP = ptr.p->stopGCP;
      rep->noOfBytes = ptr.p->noOfBytes;
      rep->noOfRecords = ptr.p->noOfRecords;
      rep->noOfLogBytes = ptr.p->noOfLogBytes;
      rep->noOfLogRecords = ptr.p->noOfLogRecords;
      rep->nodes = ptr.p->nodes;
      sendSignal(ptr.p->clientRef, GSN_BACKUP_COMPLETE_REP, signal,
		 BackupCompleteRep::SignalLength, JBB);
    }

    signal->theData[0] = NDB_LE_BackupCompleted;
    signal->theData[1] = ptr.p->clientRef;
    signal->theData[2] = ptr.p->backupId;
    signal->theData[3] = ptr.p->startGCP;
    signal->theData[4] = ptr.p->stopGCP;
    signal->theData[5] = ptr.p->noOfBytes;
    signal->theData[6] = ptr.p->noOfRecords;
    signal->theData[7] = ptr.p->noOfLogBytes;
    signal->theData[8] = ptr.p->noOfLogRecords;
    ptr.p->nodes.copyto(NdbNodeBitmask::Size, signal->theData+9);
    sendSignal(CMVMI_REF, GSN_EVENT_REP, signal, 9+NdbNodeBitmask::Size, JBB);
  }
  else
  {
    masterAbort(signal, ptr);
  }
}

/*****************************************************************************
 * 
 * Master functionallity - Abort backup
 *
 *****************************************************************************/
void
Backup::masterAbort(Signal* signal, BackupRecordPtr ptr)
{
  jam();
#ifdef DEBUG_ABORT
  ndbout_c("************ masterAbort");
#endif
  if(ptr.p->masterData.errorCode != 0)
  {
    jam();
    return;
  }

  if (SEND_BACKUP_COMPLETED_FLAG(ptr.p->flags))
  {
    BackupAbortRep* rep = (BackupAbortRep*)signal->getDataPtrSend();
    rep->backupId = ptr.p->backupId;
    rep->senderData = ptr.p->clientData;
    rep->reason = ptr.p->errorCode;
    sendSignal(ptr.p->clientRef, GSN_BACKUP_ABORT_REP, signal, 
	       BackupAbortRep::SignalLength, JBB);
  }
  signal->theData[0] = NDB_LE_BackupAborted;
  signal->theData[1] = ptr.p->clientRef;
  signal->theData[2] = ptr.p->backupId;
  signal->theData[3] = ptr.p->errorCode;
  sendSignal(CMVMI_REF, GSN_EVENT_REP, signal, 4, JBB);

  ndbrequire(ptr.p->errorCode);
  ptr.p->masterData.errorCode = ptr.p->errorCode;

  AbortBackupOrd *ord = (AbortBackupOrd*)signal->getDataPtrSend();
  ord->backupId = ptr.p->backupId;
  ord->backupPtr = ptr.i;
  ord->senderData= ptr.i;
  NodeReceiverGroup rg(BACKUP, ptr.p->nodes);
  
  switch(ptr.p->masterData.gsn){
  case GSN_DEFINE_BACKUP_REQ:
    ord->requestType = AbortBackupOrd::BackupFailure;
    sendSignal(rg, GSN_ABORT_BACKUP_ORD, signal, 
	       AbortBackupOrd::SignalLength, JBB);
    return;
  case GSN_CREATE_TRIG_REQ:
  case GSN_START_BACKUP_REQ:
  case GSN_ALTER_TRIG_REQ:
  case GSN_WAIT_GCP_REQ:
  case GSN_BACKUP_FRAGMENT_REQ:
    jam();
    ptr.p->stopGCP= ptr.p->startGCP + 1;
    sendDropTrig(signal, ptr); // dropping due to error
    return;
  case GSN_UTIL_SEQUENCE_REQ:
  case GSN_UTIL_LOCK_REQ:
  case GSN_DROP_TRIG_REQ:
    ndbrequire(false);
    return;
  case GSN_STOP_BACKUP_REQ:
    return;
  }
}

void
Backup::abort_scan(Signal * signal, BackupRecordPtr ptr)
{
  AbortBackupOrd *ord = (AbortBackupOrd*)signal->getDataPtrSend();
  ord->backupId = ptr.p->backupId;
  ord->backupPtr = ptr.i;
  ord->senderData= ptr.i;
  ord->requestType = AbortBackupOrd::AbortScan;

  TablePtr tabPtr;
  ptr.p->tables.first(tabPtr);
  for(; tabPtr.i != RNIL; ptr.p->tables.next(tabPtr)) {
    jam();
    FragmentPtr fragPtr;
    Array<Fragment> & frags = tabPtr.p->fragments;
    const Uint32 fragCount = frags.getSize();
    
    for(Uint32 i = 0; i<fragCount; i++) {
      jam();
      tabPtr.p->fragments.getPtr(fragPtr, i);
      const Uint32 nodeId = fragPtr.p->node;
      if(fragPtr.p->scanning != 0 && ptr.p->nodes.get(nodeId)) {
        jam();
	
	const BlockReference ref = numberToRef(BACKUP, nodeId);
	sendSignal(ref, GSN_ABORT_BACKUP_ORD, signal,
		   AbortBackupOrd::SignalLength, JBB);
	
      }
    }
  }
}

/*****************************************************************************
 * 
 * Slave functionallity: Define Backup 
 *
 *****************************************************************************/
void
Backup::defineBackupRef(Signal* signal, BackupRecordPtr ptr, Uint32 errCode)
{
  ptr.p->m_gsn = GSN_DEFINE_BACKUP_REF;
  ptr.p->setErrorCode(errCode);
  ndbrequire(ptr.p->errorCode != 0);
  
  DefineBackupRef* ref = (DefineBackupRef*)signal->getDataPtrSend();
  ref->backupId = ptr.p->backupId;
  ref->backupPtr = ptr.i;
  ref->errorCode = ptr.p->errorCode;
  ref->nodeId = getOwnNodeId();
  sendSignal(ptr.p->masterRef, GSN_DEFINE_BACKUP_REF, signal, 
	     DefineBackupRef::SignalLength, JBB);
}

void
Backup::execDEFINE_BACKUP_REQ(Signal* signal)
{
  jamEntry();

  DefineBackupReq* req = (DefineBackupReq*)signal->getDataPtr();
  
  BackupRecordPtr ptr;
  const Uint32 ptrI = req->backupPtr;
  const Uint32 backupId = req->backupId;
  const BlockReference senderRef = req->senderRef;

  if(senderRef == reference()){
    /**
     * Signal sent from myself -> record already seized
     */
    jam();
    c_backupPool.getPtr(ptr, ptrI);
  } else { // from other node
    jam();
#ifdef DEBUG_ABORT
    dumpUsedResources();
#endif
    if(!c_backups.seizeId(ptr, ptrI)) {
      jam();
      ndbrequire(false); // If master has succeeded slave should succed
    }//if
  }//if

  CRASH_INSERTION((10014));
  
  ptr.p->m_gsn = GSN_DEFINE_BACKUP_REQ;
  ptr.p->slaveState.forceState(INITIAL);
  ptr.p->slaveState.setState(DEFINING);
  ptr.p->errorCode = 0;
  ptr.p->clientRef = req->clientRef;
  ptr.p->clientData = req->clientData;
  if(senderRef == reference())
    ptr.p->flags = req->flags;
  else
    ptr.p->flags = req->flags & ~((Uint32)0x3); /* remove waitCompleted flags
						 * as non master should never
						 * reply
						 */
  ptr.p->masterRef = senderRef;
  ptr.p->nodes = req->nodes;
  ptr.p->backupId = backupId;
  ptr.p->backupKey[0] = req->backupKey[0];
  ptr.p->backupKey[1] = req->backupKey[1];
  ptr.p->backupDataLen = req->backupDataLen;
  ptr.p->masterData.dropTrig.tableId = RNIL;
  ptr.p->masterData.alterTrig.tableId = RNIL;
  ptr.p->masterData.errorCode = 0;
  ptr.p->noOfBytes = 0;
  ptr.p->noOfRecords = 0;
  ptr.p->noOfLogBytes = 0;
  ptr.p->noOfLogRecords = 0;
  ptr.p->currGCP = 0;
  
  /**
   * Allocate files
   */
  BackupFilePtr files[3];
  Uint32 noOfPages[] = {
    NO_OF_PAGES_META_FILE,
    2,   // 32k
    0    // 3M
  };
  const Uint32 maxInsert[] = {
    2048,  // Temporarily to solve TR515
    4096,    // 4k
    16*3000, // Max 16 tuples
  };
  Uint32 minWrite[] = {
    8192,
    8192,
    32768
  };
  Uint32 maxWrite[] = {
    8192,
    8192,
    32768
  };
  
  minWrite[1] = c_defaults.m_minWriteSize;
  maxWrite[1] = c_defaults.m_maxWriteSize;
  noOfPages[1] = (c_defaults.m_logBufferSize + sizeof(Page32) - 1) / 
    sizeof(Page32);
  minWrite[2] = c_defaults.m_minWriteSize;
  maxWrite[2] = c_defaults.m_maxWriteSize;
  noOfPages[2] = (c_defaults.m_dataBufferSize + sizeof(Page32) - 1) / 
    sizeof(Page32);
  
  for(Uint32 i = 0; i<3; i++) {
    jam();
    if(!ptr.p->files.seize(files[i])) {
      jam();
      defineBackupRef(signal, ptr, 
		      DefineBackupRef::FailedToAllocateFileRecord);
      return;
    }//if

    files[i].p->tableId = RNIL;
    files[i].p->backupPtr = ptr.i;
    files[i].p->filePointer = RNIL;
    files[i].p->fileClosing = 0;
    files[i].p->fileOpened = 0;
    files[i].p->fileRunning = 0;    
    files[i].p->scanRunning = 0;
    files[i].p->errorCode = 0;
    
    if(files[i].p->pages.seize(noOfPages[i]) == false) {
      jam();
      DEBUG_OUT("Failed to seize " << noOfPages[i] << " pages");
      defineBackupRef(signal, ptr, DefineBackupRef::FailedToAllocateBuffers);
      return;
    }//if
    Page32Ptr pagePtr;
    files[i].p->pages.getPtr(pagePtr, 0);
    
    const char * msg = files[i].p->
      operation.dataBuffer.setup((Uint32*)pagePtr.p, 
				 noOfPages[i] * (sizeof(Page32) >> 2),
				 128,
				 minWrite[i] >> 2,
				 maxWrite[i] >> 2,
				 maxInsert[i]);
    if(msg != 0) {
      jam();
      defineBackupRef(signal, ptr, DefineBackupRef::FailedToSetupFsBuffers);
      return;
    }//if