| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <vector> |
| #include <map> |
| #include <algorithm> |
| |
| #include <ignite/common/concurrent.h> |
| |
| #include "ignite/impl/binary/binary_type_manager.h" |
| |
| using namespace ignite::common::concurrent; |
| |
| namespace ignite |
| { |
| namespace impl |
| { |
| namespace binary |
| { |
| BinaryTypeManager::BinaryTypeManager() : |
| snapshots(new std::map<int32_t, SPSnap>), |
| pending(new std::vector<SPSnap>), |
| cs(), |
| updater(0), |
| pendingVer(0), |
| ver(0) |
| { |
| // No-op. |
| } |
| |
| BinaryTypeManager::~BinaryTypeManager() |
| { |
| delete snapshots; |
| delete pending; |
| } |
| |
| SharedPointer<BinaryTypeHandler> BinaryTypeManager::GetHandler(const std::string& typeName, |
| const std::string& affFieldName, int32_t typeId) |
| { |
| { // Locking scope. |
| CsLockGuard guard(cs); |
| |
| std::map<int32_t, SPSnap>::iterator it = snapshots->find(typeId); |
| if (it != snapshots->end()) |
| return SharedPointer<BinaryTypeHandler>(new BinaryTypeHandler(it->second)); |
| |
| for (size_t i = 0; i < pending->size(); ++i) |
| { |
| SPSnap& snap = (*pending)[i]; |
| |
| if (snap.Get()->GetTypeId() == typeId) |
| return SharedPointer<BinaryTypeHandler>(new BinaryTypeHandler(snap)); |
| } |
| } |
| |
| SPSnap snapshot = SPSnap(new Snap(typeName, affFieldName, typeId)); |
| |
| return SharedPointer<BinaryTypeHandler>(new BinaryTypeHandler(snapshot)); |
| } |
| |
| void BinaryTypeManager::SubmitHandler(BinaryTypeHandler& hnd) |
| { |
| // If this is the very first write of a class or difference exists, |
| // we need to enqueue it for write. |
| if (hnd.HasUpdate()) |
| { |
| CsLockGuard guard(cs); |
| |
| pending->push_back(hnd.GetUpdated()); |
| |
| ++pendingVer; |
| } |
| } |
| |
| int32_t BinaryTypeManager::GetVersion() const |
| { |
| Memory::Fence(); |
| |
| return ver; |
| } |
| |
| bool BinaryTypeManager::IsUpdatedSince(int32_t oldVer) const |
| { |
| Memory::Fence(); |
| |
| return pendingVer > oldVer; |
| } |
| |
| bool BinaryTypeManager::ProcessPendingUpdates(IgniteError& err) |
| { |
| CsLockGuard guard(cs); |
| |
| if (!updater) |
| { |
| err = IgniteError(IgniteError::IGNITE_ERR_GENERIC, "Updater is not set"); |
| |
| return false; |
| } |
| |
| for (std::vector<SPSnap>::iterator it = pending->begin(); it != pending->end(); ++it) |
| { |
| Snap* pendingSnap = it->Get(); |
| |
| if (!pendingSnap) |
| continue; // Snapshot has been processed already. |
| |
| if (!updater->Update(*pendingSnap, err)) |
| { |
| err = IgniteError(IgniteError::IGNITE_ERR_GENERIC, "Can not send update"); |
| |
| return false; // Stop as we cannot move further. |
| } |
| |
| std::map<int32_t, SPSnap>::iterator elem = snapshots->lower_bound(pendingSnap->GetTypeId()); |
| |
| if (elem == snapshots->end() || elem->first != pendingSnap->GetTypeId()) |
| snapshots->insert(elem, std::make_pair(pendingSnap->GetTypeId(), *it)); |
| else |
| { |
| // Temporary snapshot. |
| SPSnap tmp; |
| |
| // Move all values from pending update. |
| tmp.Swap(*it); |
| |
| // Add old fields. Only non-existing values added. |
| tmp.Get()->CopyFieldsFrom(elem->second.Get()); |
| |
| // Move to snapshots storage. |
| tmp.Swap(elem->second); |
| } |
| } |
| |
| pending->clear(); |
| |
| ver = pendingVer; |
| |
| return true; |
| } |
| |
| void BinaryTypeManager::SetUpdater(BinaryTypeUpdater* updater) |
| { |
| CsLockGuard guard(cs); |
| |
| this->updater = updater; |
| } |
| |
| SPSnap BinaryTypeManager::GetMeta(int32_t typeId) |
| { |
| CsLockGuard guard(cs); |
| |
| std::map<int32_t, SPSnap>::iterator it = snapshots->find(typeId); |
| |
| if (it != snapshots->end() && it->second.Get()) |
| return it->second; |
| |
| for (size_t i = 0; i < pending->size(); ++i) |
| { |
| SPSnap& snap = (*pending)[i]; |
| |
| if (snap.Get()->GetTypeId() == typeId) |
| return snap; |
| } |
| |
| if (!updater) |
| throw IgniteError(IgniteError::IGNITE_ERR_BINARY, "Metadata updater is not available."); |
| |
| IgniteError err; |
| |
| SPSnap snap = updater->GetMeta(typeId, err); |
| |
| IgniteError::ThrowIfNeeded(err); |
| |
| // Caching meta snapshot for faster access in future. |
| snapshots->insert(std::make_pair(typeId, snap)); |
| |
| return snap; |
| } |
| } |
| } |
| } |