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DaemonManager.cpp
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DaemonManager.cpp
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// Copyright (c) 2014-2019, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "DaemonManager.h"
#include <QFile>
#include <QThread>
#include <QFileInfo>
#include <QDir>
#include <QDebug>
#include <QUrl>
#include <QtConcurrent/QtConcurrent>
#include <QApplication>
#include <QProcess>
#include <QTime>
#include <QStorageInfo>
#include <QVariantMap>
#include <QVariant>
#include <QMap>
namespace {
static const int DAEMON_START_TIMEOUT_SECONDS = 120;
}
DaemonManager * DaemonManager::m_instance = nullptr;
QStringList DaemonManager::m_clArgs;
DaemonManager *DaemonManager::instance(const QStringList *args)
{
if (!m_instance) {
m_instance = new DaemonManager;
// store command line arguments for later use
m_clArgs = *args;
m_clArgs.removeFirst();
}
return m_instance;
}
bool DaemonManager::start(const QString &flags, NetworkType::Type nettype, const QString &dataDir, const QString &bootstrapNodeAddress, bool noSync /* = false*/)
{
// prepare command line arguments and pass to monerod
QStringList arguments;
// Start daemon with --detach flag on non-windows platforms
#ifndef Q_OS_WIN
arguments << "--detach";
#endif
if (nettype == NetworkType::TESTNET)
arguments << "--testnet";
else if (nettype == NetworkType::STAGENET)
arguments << "--stagenet";
foreach (const QString &str, m_clArgs) {
qDebug() << QString(" [%1] ").arg(str);
if (!str.isEmpty())
arguments << str;
}
// Custom startup flags for daemon
foreach (const QString &str, flags.split(" ")) {
qDebug() << QString(" [%1] ").arg(str);
if (!str.isEmpty())
arguments << str;
}
// Custom data-dir
if(!dataDir.isEmpty()) {
arguments << "--data-dir" << dataDir;
}
// Bootstrap node address
if(!bootstrapNodeAddress.isEmpty()) {
arguments << "--bootstrap-daemon-address" << bootstrapNodeAddress;
}
if (noSync) {
arguments << "--no-sync";
}
arguments << "--check-updates" << "disabled";
// --max-concurrency based on threads available. max: 6
int32_t concurrency = qBound(1, QThread::idealThreadCount() / 2, 6);
if(!flags.contains("--max-concurrency", Qt::CaseSensitive)){
arguments << "--max-concurrency" << QString::number(concurrency);
}
qDebug() << "starting monerod " + m_monerod;
qDebug() << "With command line arguments " << arguments;
m_daemon = new QProcess();
initialized = true;
// Connect output slots
connect (m_daemon, SIGNAL(readyReadStandardOutput()), this, SLOT(printOutput()));
connect (m_daemon, SIGNAL(readyReadStandardError()), this, SLOT(printError()));
// Start monerod
bool started = m_daemon->startDetached(m_monerod, arguments);
// add state changed listener
connect(m_daemon,SIGNAL(stateChanged(QProcess::ProcessState)),this,SLOT(stateChanged(QProcess::ProcessState)));
if (!started) {
qDebug() << "Daemon start error: " + m_daemon->errorString();
emit daemonStartFailure();
return false;
}
// Start start watcher
m_scheduler.run([this, nettype, noSync] {
if (startWatcher(nettype)) {
emit daemonStarted();
m_noSync = noSync;
} else {
emit daemonStartFailure();
}
});
return true;
}
bool DaemonManager::stop(NetworkType::Type nettype)
{
QString message;
sendCommand({"exit"}, nettype, message);
qDebug() << message;
// Start stop watcher - Will kill if not shutting down
m_scheduler.run([this, nettype] {
if (stopWatcher(nettype))
{
emit daemonStopped();
}
});
return true;
}
bool DaemonManager::startWatcher(NetworkType::Type nettype) const
{
// Check if daemon is started every 2 seconds
QTime timer;
timer.restart();
while(true && !m_app_exit && timer.elapsed() / 1000 < DAEMON_START_TIMEOUT_SECONDS ) {
QThread::sleep(2);
if(!running(nettype)) {
qDebug() << "daemon not running. checking again in 2 seconds.";
} else {
qDebug() << "daemon is started. Waiting 5 seconds to let daemon catch up";
QThread::sleep(5);
return true;
}
}
return false;
}
bool DaemonManager::stopWatcher(NetworkType::Type nettype) const
{
// Check if daemon is running every 2 seconds. Kill if still running after 10 seconds
int counter = 0;
while(true && !m_app_exit) {
QThread::sleep(2);
counter++;
if(running(nettype)) {
qDebug() << "Daemon still running. " << counter;
if(counter >= 5) {
qDebug() << "Killing it! ";
#ifdef Q_OS_WIN
QProcess::execute("taskkill /F /IM monerod.exe");
#else
QProcess::execute("pkill monerod");
#endif
}
} else
return true;
}
return false;
}
void DaemonManager::stateChanged(QProcess::ProcessState state)
{
qDebug() << "STATE CHANGED: " << state;
if (state == QProcess::NotRunning) {
emit daemonStopped();
}
}
void DaemonManager::printOutput()
{
QByteArray byteArray = m_daemon->readAllStandardOutput();
QStringList strLines = QString(byteArray).split("\n");
foreach (QString line, strLines) {
emit daemonConsoleUpdated(line);
qDebug() << "Daemon: " + line;
}
}
void DaemonManager::printError()
{
QByteArray byteArray = m_daemon->readAllStandardError();
QStringList strLines = QString(byteArray).split("\n");
foreach (QString line, strLines) {
emit daemonConsoleUpdated(line);
qDebug() << "Daemon ERROR: " + line;
}
}
bool DaemonManager::running(NetworkType::Type nettype) const
{
QString status;
sendCommand({"sync_info"}, nettype, status);
qDebug() << status;
return status.contains("Height:");
}
bool DaemonManager::noSync() const noexcept
{
return m_noSync;
}
void DaemonManager::runningAsync(NetworkType::Type nettype, const QJSValue& callback) const
{
m_scheduler.run([this, nettype] {
return QJSValueList({running(nettype)});
}, callback);
}
bool DaemonManager::sendCommand(const QStringList &cmd, NetworkType::Type nettype, QString &message) const
{
QProcess p;
QStringList external_cmd(cmd);
// Add network type flag if needed
if (nettype == NetworkType::TESTNET)
external_cmd << "--testnet";
else if (nettype == NetworkType::STAGENET)
external_cmd << "--stagenet";
qDebug() << "sending external cmd: " << external_cmd;
p.start(m_monerod, external_cmd);
bool started = p.waitForFinished(-1);
message = p.readAllStandardOutput();
emit daemonConsoleUpdated(message);
return started;
}
void DaemonManager::sendCommandAsync(const QStringList &cmd, NetworkType::Type nettype, const QJSValue& callback) const
{
m_scheduler.run([this, cmd, nettype] {
QString message;
return QJSValueList({sendCommand(cmd, nettype, message)});
}, callback);
}
void DaemonManager::exit()
{
qDebug("DaemonManager: exit()");
m_app_exit = true;
}
QVariantMap DaemonManager::validateDataDir(const QString &dataDir) const
{
QVariantMap result;
bool valid = true;
bool readOnly = false;
int storageAvailable = 0;
bool lmdbExists = true;
QStorageInfo storage(dataDir);
if (storage.isValid() && storage.isReady()) {
if (storage.isReadOnly()) {
readOnly = true;
valid = false;
}
// Make sure there is 75GB storage available
storageAvailable = storage.bytesAvailable()/1000/1000/1000;
if (storageAvailable < 75) {
valid = false;
}
} else {
valid = false;
}
if (!QDir(dataDir+"/lmdb").exists()) {
lmdbExists = false;
valid = false;
}
result.insert("valid", valid);
result.insert("lmdbExists", lmdbExists);
result.insert("readOnly", readOnly);
result.insert("storageAvailable", storageAvailable);
return result;
}
DaemonManager::DaemonManager(QObject *parent)
: QObject(parent)
, m_scheduler(this)
{
// Platform depetent path to monerod
#ifdef Q_OS_WIN
m_monerod = QApplication::applicationDirPath() + "/monerod.exe";
#elif defined(Q_OS_UNIX)
m_monerod = QApplication::applicationDirPath() + "/monerod";
#endif
if (m_monerod.length() == 0) {
qCritical() << "no daemon binary defined for current platform";
m_has_daemon = false;
}
}
DaemonManager::~DaemonManager()
{
m_scheduler.shutdownWaitForFinished();
}