92 lines
3.3 KiB
C++
92 lines
3.3 KiB
C++
/*
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* This file is part of the Flowee project
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* Copyright (C) 2018-2021 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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#include "BlockNotificationService.h"
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#include <APIProtocol.h>
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#include <Logger.h>
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#include <Message.h>
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#include <chain.h>
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#include <primitives/Block.h>
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#include <streaming/MessageBuilder.h>
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BlockNotificationService::BlockNotificationService()
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: NetworkService(Api::BlockNotificationService)
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{
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ValidationNotifier().addListener(this);
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}
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BlockNotificationService::~BlockNotificationService()
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{
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ValidationNotifier().removeListener(this);
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}
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void BlockNotificationService::syncAllTransactionsInBlock(const Block &, CBlockIndex *index)
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{
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const auto list = remotes<RemoteWithBool>(&NetworkService::filterRemoteWithBool);
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if (list.empty())
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return;
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m_pool.reserve(45);
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Streaming::MessageBuilder builder(m_pool);
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builder.add(Api::BlockNotification::BlockHash, index->GetBlockHash());
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builder.add(Api::BlockNotification::BlockHeight, index->nHeight);
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Message message(builder.message(Api::BlockNotificationService, Api::BlockNotification::NewBlockOnChain));
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for (auto &subinfo : list) {
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subinfo->connection.send(message);
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}
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}
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void BlockNotificationService::chainReorged(CBlockIndex *oldTip, const std::vector<Block> &revertedBlocks)
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{
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const auto list = remotes<RemoteWithBool>(&NetworkService::filterRemoteWithBool);
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if (list.empty())
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return;
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/*
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* since the service already sends out which block is the new one in a separate message,
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* all we will do in this one is notify them which blocks have been removed.
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*/
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m_pool.reserve(revertedBlocks.size() * 42);
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CBlockIndex *index = oldTip;
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Streaming::MessageBuilder builder(m_pool);
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for (size_t i = 0; i < revertedBlocks.size(); ++i) {
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assert(index);
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builder.add(Api::BlockNotification::BlockHash, index->GetBlockHash());
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builder.add(Api::BlockNotification::BlockHeight, index->nHeight);
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index = index->pprev;
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}
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Message message(builder.message(Api::BlockNotificationService, Api::BlockNotification::BlocksRemoved));
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for (auto &subinfo : list) {
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subinfo->connection.send(message);
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}
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}
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void BlockNotificationService::onIncomingMessage(Remote *remote_, const Message &message, const EndPoint &ep)
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{
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assert(dynamic_cast<RemoteWithBool*>(remote_));
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RemoteWithBool *remote = static_cast<RemoteWithBool*>(remote_);
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if (message.messageId() == Api::BlockNotification::Subscribe) {
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logInfo(Log::BlockNotifactionService) << "Remote" << ep.connectionId << "Wants to hear about blocks";
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remote->enabled = true;
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}
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else if (message.messageId() == Api::BlockNotification::Unsubscribe)
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remote->enabled = false;
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}
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