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#include "sshremoteprocessrunner.h"
#define ASSERT_STATE(states) assertState(states, Q_FUNC_INFO)
namespace Utils {
class SshRemoteProcessRunnerPrivate : public QObject
{
Q_OBJECT
public:
SshRemoteProcessRunnerPrivate(const SshConnectionParameters ¶ms,
QObject *parent);
SshRemoteProcessRunnerPrivate(const SshConnection::Ptr &connection,
QObject *parent);
void run(const QByteArray &command);
QByteArray command() const { return m_command; }
const SshConnection::Ptr m_connection;
SshRemoteProcess::Ptr m_process;
signals:
void connectionError(Utils::SshError);
void processStarted();
void processOutputAvailable(const QByteArray &output);
void processErrorOutputAvailable(const QByteArray &output);
void processClosed(int exitStatus);
private slots:
void handleConnected();
void handleConnectionError(Utils::SshError error);
void handleDisconnected();
void handleProcessStarted();
void handleProcessFinished(int exitStatus);
private:
enum State { Inactive, Connecting, Connected, ProcessRunning };
void setState(State state);
void assertState(const QList<State> &allowedStates, const char *func);
void assertState(State allowedState, const char *func);
State m_state;
QByteArray m_command;
const SshConnectionParameters m_params;
};
SshRemoteProcessRunnerPrivate::SshRemoteProcessRunnerPrivate(const SshConnectionParameters ¶ms,
QObject *parent)
: QObject(parent),
m_connection(SshConnection::create()),
m_state(Inactive),
m_params(params)
{
}
SshRemoteProcessRunnerPrivate::SshRemoteProcessRunnerPrivate(const SshConnection::Ptr &connection,
QObject *parent)
: QObject(parent),
m_connection(connection),
m_state(Inactive),
m_params(connection->connectionParameters())
{
}
void SshRemoteProcessRunnerPrivate::run(const QByteArray &command)
{
ASSERT_STATE(Inactive);
setState(Connecting);
m_command = command;
connect(m_connection.data(), SIGNAL(error(Utils::SshError)),
SLOT(handleConnectionError(Utils::SshError)));
connect(m_connection.data(), SIGNAL(disconnected()),
SLOT(handleDisconnected()));
if (m_connection->state() == SshConnection::Connected) {
handleConnected();
} else {
connect(m_connection.data(), SIGNAL(connected()),
SLOT(handleConnected()));
m_connection->connectToHost(m_params);
}
}
void SshRemoteProcessRunnerPrivate::handleConnected()
{
ASSERT_STATE(Connecting);
setState(Connected);
m_process = m_connection->createRemoteProcess(m_command);
connect(m_process.data(), SIGNAL(started()), SLOT(handleProcessStarted()));
connect(m_process.data(), SIGNAL(closed(int)),
SLOT(handleProcessFinished(int)));
connect(m_process.data(), SIGNAL(outputAvailable(QByteArray)),
SIGNAL(processOutputAvailable(QByteArray)));
connect(m_process.data(), SIGNAL(errorOutputAvailable(QByteArray)),
SIGNAL(processErrorOutputAvailable(QByteArray)));
m_process->start();
}
void SshRemoteProcessRunnerPrivate::handleConnectionError(Utils::SshError error)
{
handleDisconnected();
emit connectionError(error);
}
void SshRemoteProcessRunnerPrivate::handleDisconnected()
{
ASSERT_STATE(QList<State>() << Connecting << Connected << ProcessRunning);
setState(Inactive);
}
void SshRemoteProcessRunnerPrivate::handleProcessStarted()
{
ASSERT_STATE(Connected);
setState(ProcessRunning);
emit processStarted();
}
void SshRemoteProcessRunnerPrivate::handleProcessFinished(int exitStatus)
{
switch (exitStatus) {
case SshRemoteProcess::FailedToStart:
ASSERT_STATE(Connected);
break;
case SshRemoteProcess::KilledBySignal:
case SshRemoteProcess::ExitedNormally:
ASSERT_STATE(ProcessRunning);
break;
default:
Q_ASSERT_X(false, Q_FUNC_INFO, "Impossible exit status.");
}
setState(Inactive);
emit processClosed(exitStatus);
}
void SshRemoteProcessRunnerPrivate::setState(State state)
{
if (m_state != state) {
m_state = state;
if (m_state == Inactive) {
if (m_process)
disconnect(m_process.data(), 0, this, 0);
disconnect(m_connection.data(), 0, this, 0);
}
}
}
void SshRemoteProcessRunnerPrivate::assertState(const QList<State> &allowedStates,
const char *func)
{
if (!allowedStates.contains(m_state))
qWarning("Unexpected state %d in function %s", m_state, func);
}
void SshRemoteProcessRunnerPrivate::assertState(State allowedState,
const char *func)
{
assertState(QList<State>() << allowedState, func);
}
SshRemoteProcessRunner::Ptr SshRemoteProcessRunner::create(const SshConnectionParameters ¶ms)
{
return SshRemoteProcessRunner::Ptr(new SshRemoteProcessRunner(params));
}
SshRemoteProcessRunner::Ptr SshRemoteProcessRunner::create(const SshConnection::Ptr &connection)
{
return SshRemoteProcessRunner::Ptr(new SshRemoteProcessRunner(connection));
}
SshRemoteProcessRunner::SshRemoteProcessRunner(const SshConnectionParameters ¶ms)
: d(new SshRemoteProcessRunnerPrivate(params, this))
{
init();
}
SshRemoteProcessRunner::SshRemoteProcessRunner(const SshConnection::Ptr &connection)
: d(new SshRemoteProcessRunnerPrivate(connection, this))
{
init();
}
void SshRemoteProcessRunner::init()
{
connect(d, SIGNAL(connectionError(Utils::SshError)),
SIGNAL(connectionError(Utils::SshError)));
connect(d, SIGNAL(processStarted()), SIGNAL(processStarted()));
connect(d, SIGNAL(processClosed(int)), SIGNAL(processClosed(int)));
connect(d, SIGNAL(processOutputAvailable(QByteArray)),
SIGNAL(processOutputAvailable(QByteArray)));
connect(d, SIGNAL(processErrorOutputAvailable(QByteArray)),
SIGNAL(processErrorOutputAvailable(QByteArray)));
}
void SshRemoteProcessRunner::run(const QByteArray &command)
{
d->run(command);
}
QByteArray SshRemoteProcessRunner::command() const { return d->command(); }
SshConnection::Ptr SshRemoteProcessRunner::connection() const { return d->m_connection; }
SshRemoteProcess::Ptr SshRemoteProcessRunner::process() const { return d->m_process; }
} // namespace Utils
#include "sshremoteprocessrunner.moc"
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