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a9f23729a9
This patch changes logic from counting all nodes to counting only read-write nodes when messaging about DML operations. feat(MCOL-6082): Multiple readers of dbroots using OamCache logic This patch introduces centralized logic of selecting what dbroot is accessible in PrimProc on what node. The logic is in OamCache for time being and can be moved later. Fix build
99 lines
2.3 KiB
C++
99 lines
2.3 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include <unistd.h>
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#include "bytestream.h"
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using namespace messageqcpp;
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#include "we_messages.h"
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#include "we_clients.h"
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#include "resourcemanager.h"
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#include "ddlpkg.h"
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#include "ddlpackageprocessor.h"
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#include "dataconvert.h"
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using namespace dataconvert;
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using namespace ddlpackage;
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using namespace ddlpackageprocessor;
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#include "we_ddlcommandclient.h"
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namespace WriteEngine
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{
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WE_DDLCommandClient::WE_DDLCommandClient()
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{
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fWEClient = new WEClients(WEClients::DDLPROC);
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fOamCache = oam::OamCache::makeOamCache();
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}
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WE_DDLCommandClient::~WE_DDLCommandClient()
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{
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delete fWEClient;
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fWEClient = NULL;
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}
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uint8_t WE_DDLCommandClient::UpdateSyscolumnNextval(uint32_t columnOid, uint64_t nextVal, uint32_t sessionID)
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{
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ByteStream command, response;
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uint8_t err = 0;
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uint64_t uniqueId = fDbrm.getUnique64();
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fWEClient->addQueue(uniqueId);
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command << (ByteStream::byte)WE_UPDATE_NEXTVAL;
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command << uniqueId;
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command << columnOid;
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command << nextVal;
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command << sessionID;
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uint16_t dbRoot;
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BRM::OID_t oid = 1021;
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fDbrm.getSysCatDBRoot(oid, dbRoot);
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int pmNum = 1;
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boost::shared_ptr<messageqcpp::ByteStream> bsIn;
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try
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{
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pmNum = fOamCache->getOwnerPM(dbRoot);
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fWEClient->write(command, pmNum);
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while (1)
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{
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bsIn.reset(new ByteStream());
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fWEClient->read(uniqueId, bsIn);
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if (bsIn->length() == 0) // read error
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{
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err = 1;
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break;
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}
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else
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{
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*bsIn >> err;
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break;
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}
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}
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}
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catch (...)
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{
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err = 1;
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}
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fWEClient->removeQueue(uniqueId);
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return err;
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}
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} // namespace WriteEngine
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