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/*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* HealthCheckedConnection.cpp
* Copyright (C) 2012 Simon Newton
*/
#include "ola/Logging.h"
#include "ola/network/HealthCheckedConnection.h"
#include "ola/thread/SchedulerInterface.h"
namespace ola {
namespace network {
HealthCheckedConnection::HealthCheckedConnection(
ola::thread::SchedulerInterface *scheduler,
const ola::TimeInterval timeout_interval)
: m_scheduler(scheduler),
m_heartbeat_interval(timeout_interval),
m_send_timeout_id(ola::thread::INVALID_TIMEOUT),
m_receive_timeout_id(ola::thread::INVALID_TIMEOUT) {
}
HealthCheckedConnection::~HealthCheckedConnection() {
if (m_send_timeout_id != ola::thread::INVALID_TIMEOUT)
m_scheduler->RemoveTimeout(m_send_timeout_id);
if (m_receive_timeout_id != ola::thread::INVALID_TIMEOUT)
m_scheduler->RemoveTimeout(m_receive_timeout_id);
}
bool HealthCheckedConnection::Setup() {
// setup the RX timeout
ResumeTimer();
// send a heartbeat now and setup the TX timer
SendHeartbeat();
HeartbeatSent();
return true;
}
/**
* Reset the send timer
*/
void HealthCheckedConnection::HeartbeatSent() {
if (m_send_timeout_id != ola::thread::INVALID_TIMEOUT)
m_scheduler->RemoveTimeout(m_send_timeout_id);
m_send_timeout_id = m_scheduler->RegisterRepeatingTimeout(
m_heartbeat_interval,
NewCallback(this, &HealthCheckedConnection::SendNextHeartbeat));
}
/**
* Reset the RX timer
*/
void HealthCheckedConnection::HeartbeatReceived() {
m_scheduler->RemoveTimeout(m_receive_timeout_id);
UpdateReceiveTimer();
}
/**
* Pause the receive timer
*/
void HealthCheckedConnection::PauseTimer() {
if (m_receive_timeout_id != ola::thread::INVALID_TIMEOUT) {
m_scheduler->RemoveTimeout(m_receive_timeout_id);
m_receive_timeout_id = ola::thread::INVALID_TIMEOUT;
}
}
/**
* Resume the receive timer
*/
void HealthCheckedConnection::ResumeTimer() {
if (m_receive_timeout_id == ola::thread::INVALID_TIMEOUT)
UpdateReceiveTimer();
}
bool HealthCheckedConnection::SendNextHeartbeat() {
SendHeartbeat();
return true;
}
void HealthCheckedConnection::UpdateReceiveTimer() {
TimeInterval timeout_interval(static_cast<int>(
2.5 * m_heartbeat_interval.AsInt()));
m_receive_timeout_id = m_scheduler->RegisterSingleTimeout(
timeout_interval,
NewSingleCallback(
this, &HealthCheckedConnection::InternalHeartbeatTimeout));
}
void HealthCheckedConnection::InternalHeartbeatTimeout() {
m_receive_timeout_id = ola::thread::INVALID_TIMEOUT;
HeartbeatTimeout();
}
} // namespace network
} // namespace ola
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