138 lines
4.3 KiB
C++
138 lines
4.3 KiB
C++
/*
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* This file is part of the Flowee project
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* Copyright (C) 2019-2021 Tom Zander <tom@flowee.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef BLOCKCHAIN_P_H
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#define BLOCKCHAIN_P_H
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#include "Blockchain.h"
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#include <APIProtocol.h>
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#include <NetworkManager.h>
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#include <WorkerThreads.h>
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#include <streaming/MessageBuilder.h>
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#include <boost/thread/tss.hpp>
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#include <deque>
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#include <map>
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#include <mutex>
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namespace Blockchain {
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enum HeaderTags
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{
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SearchRequestId = Api::RequestId + 1,
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JobRequestId
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};
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class SearchEnginePrivate {
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public:
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SearchEnginePrivate(SearchEngine *q);
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// parse config file and connect to services.
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void findServices();
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void hubConnected(const EndPoint &ep);
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void hubDisconnected(const EndPoint &ep);
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void hubSentMessage(const Message &message);
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void indexerConnected(const EndPoint &ep);
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void indexerDisconnected(const EndPoint &ep);
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void indexerSentMessage(const Message &message);
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void sendMessage(const Message &message, Service service);
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void searchFinished(Search *searcher);
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Streaming::BufferPool &pool(int reserve);
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WorkerThreads workers;
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NetworkManager network;
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boost::thread_specific_ptr<Streaming::BufferPool> pools;
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// TODO make thread-safe
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struct Connection {
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NetworkConnection con;
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std::set<Service> services;
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};
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std::deque<Connection> connections;
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std::mutex lock;
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std::map<int, Search*> searchers;
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int nextRequestId;
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std::string configFile;
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SearchEngine *q;
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// policies
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SearchPolicy *txPolicy = nullptr;
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// Once we connected once to service we store it here.
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// Higher layers use this info to understand if the reason we can't find a
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// service is temporarily, or a likely setup issue if we never connected
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// said service.
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std::set<Service> m_seenServices;
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// avoid unexpected usage.
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SearchEnginePrivate(const SearchEnginePrivate&) = delete;
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SearchEnginePrivate&operator=(const SearchEnginePrivate&) = delete;
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};
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class SearchPolicy // move all this to the private instead and make the searcher link to the private instead of having a policy
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{
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public:
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explicit SearchPolicy(SearchEnginePrivate *parent) : m_owner(parent) {}
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void parseMessageFromHub(Search *request, const Message &message);
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void parseMessageFromIndexer(Search *request, const Message &message);
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void processRequests(Search *request);
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void searchFinished(Search *request);
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/**
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* @brief updateTxRefs uses the txRefs to update the back-ref in the answer list of the request.
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*
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* The client can insert txRefs at the same time they create a job. For instance to fetch a transaction
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* that matches an input of my current transaction I can start a new FetchTx:
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*
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* @code
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* auto job = Blockchain::Job();
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* job.type = Blockchain::FetchTx;
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* job.data = prevTxId;
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* txRefs.insert(std::make_pair(jobs.size(), txRefKey(requestingAnswerIndex, TxRef::Input, curInputIndex)));
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* jobs.push_back(job);
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* @endcode
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*
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* The Blockchain baseclass will then call the updateTxRefs() when data has been downloaded.
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* The updateTxRefs method will assume that the answer arrays most recently pushed Transaction is the result
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* of such a job, and ensure that the Transaction at "requestingAnswerIndex" gets a reference to this new
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* transaction.
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*/
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void updateTxRefs(Search *request, int jobId);
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protected:
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void sendMessage(Search *request, Message message, Service service);
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void updateJob(int jobIndex, Search *request, const Streaming::ConstBuffer &data, int intData1, int intData2);
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private:
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SearchEnginePrivate *m_owner;
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};
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}
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#endif
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