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// Copyright (c) 2011-2013 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "peertablemodel.h"
#include "clientmodel.h"
#include "guiconstants.h"
#include "guiutil.h"
#include "net.h"
#include "sync.h"
#include <QDebug>
#include <QList>
#include <QTimer>
bool NodeLessThan::operator()(const CNodeCombinedStats &left, const CNodeCombinedStats &right) const
{
const CNodeStats *pLeft = &(left.nodeStats);
const CNodeStats *pRight = &(right.nodeStats);
if (order == Qt::DescendingOrder)
std::swap(pLeft, pRight);
switch(column)
{
case PeerTableModel::Address:
return pLeft->addrName.compare(pRight->addrName) < 0;
case PeerTableModel::Subversion:
return pLeft->cleanSubVer.compare(pRight->cleanSubVer) < 0;
case PeerTableModel::Ping:
return pLeft->dPingTime < pRight->dPingTime;
}
return false;
}
// private implementation
class PeerTablePriv
{
public:
/** Local cache of peer information */
QList<CNodeCombinedStats> cachedNodeStats;
/** Column to sort nodes by */
int sortColumn;
/** Order (ascending or descending) to sort nodes by */
Qt::SortOrder sortOrder;
/** Index of rows by node ID */
std::map<NodeId, int> mapNodeRows;
/** Pull a full list of peers from vNodes into our cache */
void refreshPeers()
{
{
TRY_LOCK(cs_vNodes, lockNodes);
if (!lockNodes)
{
// skip the refresh if we can't immediately get the lock
return;
}
cachedNodeStats.clear();
#if QT_VERSION >= 0x040700
cachedNodeStats.reserve(vNodes.size());
#endif
BOOST_FOREACH(CNode* pnode, vNodes)
{
CNodeCombinedStats stats;
stats.nodeStateStats.nMisbehavior = 0;
stats.nodeStateStats.nSyncHeight = -1;
stats.nodeStateStats.nCommonHeight = -1;
stats.fNodeStateStatsAvailable = false;
pnode->copyStats(stats.nodeStats);
cachedNodeStats.append(stats);
}
}
// Try to retrieve the CNodeStateStats for each node.
{
TRY_LOCK(cs_main, lockMain);
if (lockMain)
{
BOOST_FOREACH(CNodeCombinedStats &stats, cachedNodeStats)
stats.fNodeStateStatsAvailable = GetNodeStateStats(stats.nodeStats.nodeid, stats.nodeStateStats);
}
}
if (sortColumn >= 0)
// sort cacheNodeStats (use stable sort to prevent rows jumping around unneceesarily)
qStableSort(cachedNodeStats.begin(), cachedNodeStats.end(), NodeLessThan(sortColumn, sortOrder));
// build index map
mapNodeRows.clear();
int row = 0;
BOOST_FOREACH(CNodeCombinedStats &stats, cachedNodeStats)
mapNodeRows.insert(std::pair<NodeId, int>(stats.nodeStats.nodeid, row++));
}
int size()
{
return cachedNodeStats.size();
}
CNodeCombinedStats *index(int idx)
{
if(idx >= 0 && idx < cachedNodeStats.size()) {
return &cachedNodeStats[idx];
} else {
return 0;
}
}
};
PeerTableModel::PeerTableModel(ClientModel *parent) :
QAbstractTableModel(parent),
clientModel(parent),
timer(0)
{
columns << tr("Node/Service") << tr("User Agent") << tr("Ping Time");
priv = new PeerTablePriv();
// default to unsorted
priv->sortColumn = -1;
// set up timer for auto refresh
timer = new QTimer();
connect(timer, SIGNAL(timeout()), SLOT(refresh()));
timer->setInterval(MODEL_UPDATE_DELAY);
// load initial data
refresh();
}
void PeerTableModel::startAutoRefresh()
{
timer->start();
}
void PeerTableModel::stopAutoRefresh()
{
timer->stop();
}
int PeerTableModel::rowCount(const QModelIndex &parent) const
{
Q_UNUSED(parent);
return priv->size();
}
int PeerTableModel::columnCount(const QModelIndex &parent) const
{
Q_UNUSED(parent);
return columns.length();;
}
QVariant PeerTableModel::data(const QModelIndex &index, int role) const
{
if(!index.isValid())
return QVariant();
CNodeCombinedStats *rec = static_cast<CNodeCombinedStats*>(index.internalPointer());
if (role == Qt::DisplayRole) {
switch(index.column())
{
case Address:
return QString::fromStdString(rec->nodeStats.addrName);
case Subversion:
return QString::fromStdString(rec->nodeStats.cleanSubVer);
case Ping:
return GUIUtil::formatPingTime(rec->nodeStats.dPingTime);
}
} else if (role == Qt::TextAlignmentRole) {
if (index.column() == Ping)
return (int)(Qt::AlignRight | Qt::AlignVCenter);
}
return QVariant();
}
QVariant PeerTableModel::headerData(int section, Qt::Orientation orientation, int role) const
{
if(orientation == Qt::Horizontal)
{
if(role == Qt::DisplayRole && section < columns.size())
{
return columns[section];
}
}
return QVariant();
}
Qt::ItemFlags PeerTableModel::flags(const QModelIndex &index) const
{
if(!index.isValid())
return 0;
Qt::ItemFlags retval = Qt::ItemIsSelectable | Qt::ItemIsEnabled;
return retval;
}
QModelIndex PeerTableModel::index(int row, int column, const QModelIndex &parent) const
{
Q_UNUSED(parent);
CNodeCombinedStats *data = priv->index(row);
if (data)
{
return createIndex(row, column, data);
}
else
{
return QModelIndex();
}
}
const CNodeCombinedStats *PeerTableModel::getNodeStats(int idx)
{
return priv->index(idx);
}
void PeerTableModel::refresh()
{
emit layoutAboutToBeChanged();
priv->refreshPeers();
emit layoutChanged();
}
int PeerTableModel::getRowByNodeId(NodeId nodeid)
{
std::map<NodeId, int>::iterator it = priv->mapNodeRows.find(nodeid);
if (it == priv->mapNodeRows.end())
return -1;
return it->second;
}
void PeerTableModel::sort(int column, Qt::SortOrder order)
{
priv->sortColumn = column;
priv->sortOrder = order;
refresh();
}