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#include "nodes.h"
Nodes::Nodes(QString storage)
{
dbconn=QSqlDatabase::addDatabase("QSQLITE");
dbconn.setDatabaseName(storage);
if (!dbconn.open())
{
lasterr=dbconn.lastError();
return;
}
//check if table nodes exists
}
void Nodes::Add(NodeRecord &n)
{
QSqlQuery query;
query.prepare("insert into nodes (address, port, last_active, inactive_count) values (:addr, :port, strftime('%s','now'), 0)");
query.bindValue(":addr",n.address);
query.bindValue(":port",n.port);
query.exec();
lasterr=query.lastError();
}
QList<Nodes::NodeRecord> Nodes::GetNodes()
{
QList<NodeRecord> L;
NodeRecord r;
QSqlQuery query;
query.setForwardOnly(true);
query.exec("select address, port from nodes order by inactive_count asc, last_active desc");
lasterr=query.lastError();
if (lasterr.isValid())
return L;
while(query.next())
{
r.address =query.value(0).toString();
r.port =query.value(1).toUInt();
L<<r;
}
return L;
}
void Nodes::MakeClean()
{
}
void Nodes::UpdateStatus(NodeRecord &n, bool alive)
{
QSqlQuery query;
if (alive)
query.prepare("update nodes set last_active = strftime('%s','now'), inactive_count = 0 where address = :addr and port = :port");
else
query.prepare("update nodes set inactive_count = inactive_count + 1 where address = :addr and port = :port");
query.bindValue(":addr",n.address);
query.bindValue(":port",n.port);
query.exec();
lasterr=query.lastError();
}
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