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// Copyright (c) 2011-2013 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "clientmodel.h"
#include "guiconstants.h"
#include "peertablemodel.h"
#include "alert.h"
#include "chainparams.h"
#include "checkpoints.h"
#include "main.h"
#include "net.h"
#include "ui_interface.h"
#include "util.h"
#include <stdint.h>
#include <QDateTime>
#include <QDebug>
#include <QTimer>
static const int64_t nClientStartupTime = GetTime();
ClientModel::ClientModel(OptionsModel *optionsModel, QObject *parent) :
QObject(parent),
optionsModel(optionsModel),
peerTableModel(0),
cachedNumBlocks(0),
cachedReindexing(0), cachedImporting(0),
numBlocksAtStartup(-1), pollTimer(0)
{
peerTableModel = new PeerTableModel(this);
pollTimer = new QTimer(this);
connect(pollTimer, SIGNAL(timeout()), this, SLOT(updateTimer()));
pollTimer->start(MODEL_UPDATE_DELAY);
subscribeToCoreSignals();
}
ClientModel::~ClientModel()
{
unsubscribeFromCoreSignals();
}
int ClientModel::getNumConnections(unsigned int flags) const
{
LOCK(cs_vNodes);
if (flags == CONNECTIONS_ALL) // Shortcut if we want total
return vNodes.size();
int nNum = 0;
BOOST_FOREACH(CNode* pnode, vNodes)
if (flags & (pnode->fInbound ? CONNECTIONS_IN : CONNECTIONS_OUT))
nNum++;
return nNum;
}
int ClientModel::getNumBlocks() const
{
LOCK(cs_main);
return chainActive.Height();
}
int ClientModel::getNumBlocksAtStartup()
{
if (numBlocksAtStartup == -1) numBlocksAtStartup = getNumBlocks();
return numBlocksAtStartup;
}
quint64 ClientModel::getTotalBytesRecv() const
{
return CNode::GetTotalBytesRecv();
}
quint64 ClientModel::getTotalBytesSent() const
{
return CNode::GetTotalBytesSent();
}
QDateTime ClientModel::getLastBlockDate() const
{
LOCK(cs_main);
if (chainActive.Tip())
return QDateTime::fromTime_t(chainActive.Tip()->GetBlockTime());
else
return QDateTime::fromTime_t(Params().GenesisBlock().GetBlockTime()); // Genesis block's time of current network
}
double ClientModel::getVerificationProgress() const
{
LOCK(cs_main);
return Checkpoints::GuessVerificationProgress(chainActive.Tip());
}
void ClientModel::updateTimer()
{
// Get required lock upfront. This avoids the GUI from getting stuck on
// periodical polls if the core is holding the locks for a longer time -
// for example, during a wallet rescan.
TRY_LOCK(cs_main, lockMain);
if(!lockMain)
return;
// Some quantities (such as number of blocks) change so fast that we don't want to be notified for each change.
// Periodically check and update with a timer.
int newNumBlocks = getNumBlocks();
// check for changed number of blocks we have, number of blocks peers claim to have, reindexing state and importing state
if (cachedNumBlocks != newNumBlocks ||
cachedReindexing != fReindex || cachedImporting != fImporting)
{
cachedNumBlocks = newNumBlocks;
cachedReindexing = fReindex;
cachedImporting = fImporting;
emit numBlocksChanged(newNumBlocks);
}
emit bytesChanged(getTotalBytesRecv(), getTotalBytesSent());
}
void ClientModel::updateNumConnections(int numConnections)
{
emit numConnectionsChanged(numConnections);
}
void ClientModel::updateAlert(const QString &hash, int status)
{
// Show error message notification for new alert
if(status == CT_NEW)
{
uint256 hash_256;
hash_256.SetHex(hash.toStdString());
CAlert alert = CAlert::getAlertByHash(hash_256);
if(!alert.IsNull())
{
emit message(tr("Network Alert"), QString::fromStdString(alert.strStatusBar), CClientUIInterface::ICON_ERROR);
}
}
emit alertsChanged(getStatusBarWarnings());
}
bool ClientModel::inInitialBlockDownload() const
{
return IsInitialBlockDownload();
}
enum BlockSource ClientModel::getBlockSource() const
{
if (fReindex)
return BLOCK_SOURCE_REINDEX;
else if (fImporting)
return BLOCK_SOURCE_DISK;
else if (getNumConnections() > 0)
return BLOCK_SOURCE_NETWORK;
return BLOCK_SOURCE_NONE;
}
QString ClientModel::getStatusBarWarnings() const
{
return QString::fromStdString(GetWarnings("statusbar"));
}
OptionsModel *ClientModel::getOptionsModel()
{
return optionsModel;
}
PeerTableModel *ClientModel::getPeerTableModel()
{
return peerTableModel;
}
QString ClientModel::formatFullVersion() const
{
return QString::fromStdString(FormatFullVersion());
}
QString ClientModel::formatBuildDate() const
{
return QString::fromStdString(CLIENT_DATE);
}
bool ClientModel::isReleaseVersion() const
{
return CLIENT_VERSION_IS_RELEASE;
}
QString ClientModel::clientName() const
{
return QString::fromStdString(CLIENT_NAME);
}
QString ClientModel::formatClientStartupTime() const
{
return QDateTime::fromTime_t(nClientStartupTime).toString();
}
// Handlers for core signals
static void ShowProgress(ClientModel *clientmodel, const std::string &title, int nProgress)
{
// emits signal "showProgress"
QMetaObject::invokeMethod(clientmodel, "showProgress", Qt::QueuedConnection,
Q_ARG(QString, QString::fromStdString(title)),
Q_ARG(int, nProgress));
}
static void NotifyNumConnectionsChanged(ClientModel *clientmodel, int newNumConnections)
{
// Too noisy: qDebug() << "NotifyNumConnectionsChanged : " + QString::number(newNumConnections);
QMetaObject::invokeMethod(clientmodel, "updateNumConnections", Qt::QueuedConnection,
Q_ARG(int, newNumConnections));
}
static void NotifyAlertChanged(ClientModel *clientmodel, const uint256 &hash, ChangeType status)
{
qDebug() << "NotifyAlertChanged : " + QString::fromStdString(hash.GetHex()) + " status=" + QString::number(status);
QMetaObject::invokeMethod(clientmodel, "updateAlert", Qt::QueuedConnection,
Q_ARG(QString, QString::fromStdString(hash.GetHex())),
Q_ARG(int, status));
}
void ClientModel::subscribeToCoreSignals()
{
// Connect signals to client
uiInterface.ShowProgress.connect(boost::bind(ShowProgress, this, _1, _2));
uiInterface.NotifyNumConnectionsChanged.connect(boost::bind(NotifyNumConnectionsChanged, this, _1));
uiInterface.NotifyAlertChanged.connect(boost::bind(NotifyAlertChanged, this, _1, _2));
}
void ClientModel::unsubscribeFromCoreSignals()
{
// Disconnect signals from client
uiInterface.ShowProgress.disconnect(boost::bind(ShowProgress, this, _1, _2));
uiInterface.NotifyNumConnectionsChanged.disconnect(boost::bind(NotifyNumConnectionsChanged, this, _1));
uiInterface.NotifyAlertChanged.disconnect(boost::bind(NotifyAlertChanged, this, _1, _2));
}
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