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/***************************************************************************
* Copyright (c) 2018, Martin Renou, Johan Mabille, Sylvain Corlay, and *
* Wolf Vollprecht *
* Copyright (c) 2018, QuantStack *
* *
* Distributed under the terms of the BSD 3-Clause License. *
* *
* The full license is in the file LICENSE, distributed with this software. *
****************************************************************************/
#include <chrono>
#include <fstream>
#include <iostream>
#include "xeus_client.hpp"
#include "xeus/xguid.hpp"
#include "xeus/xmessage.hpp"
#include "xeus-zmq/xmiddleware.hpp"
using namespace std::chrono_literals;
/*************************************
* xeus_logger_client implementation *
*************************************/
xeus_logger_client::xeus_logger_client(xeus::xcontext& context,
const std::string& user_name,
const xeus::xconfiguration& config,
const std::string& file_name)
: m_user_name(user_name)
, m_file_name(file_name)
, m_session_id(xeus::new_xguid())
, p_client(xeus::make_xclient_zmq(context, config))
{
std::ofstream out(m_file_name);
out << "STARTING CLIENT" << std::endl;
p_client->connect();
register_kernel_status_listener();
}
xeus_logger_client::~xeus_logger_client()
{
}
void xeus_logger_client::register_kernel_status_listener()
{
p_client->register_kernel_status_listener([this](bool status) {
handle_kernel_status_message(status);
});
}
void xeus_logger_client::handle_kernel_status_message(bool status)
{
kernel_dead = status;
}
void xeus_logger_client::send_on_shell(const std::string& msg_type, nl::json content)
{
nl::json header = xeus::make_header(msg_type, m_user_name, m_session_id);
nl::json result;
result["header"] = header;
result["parent_header"] = nl::json::object();
result["metadata"] = nl::json::object();
result["content"] = content;
log_message(result);
xeus::xmessage msg(xeus::xmessage::guid_list(),
std::move(header),
nl::json::object(),
nl::json::object(),
std::move(content),
xeus::buffer_sequence());
p_client->send_on_shell(std::move(msg));
}
void xeus_logger_client::send_on_control(const std::string& msg_type, nl::json content)
{
nl::json header = xeus::make_header(msg_type, m_user_name, m_session_id);
nl::json result;
result["header"] = header;
result["parent_header"] = nl::json::object();
result["metadata"] = nl::json::object();
result["content"] = content;
log_message(result);
xeus::xmessage msg(xeus::xmessage::guid_list(),
std::move(header),
nl::json::object(),
nl::json::object(),
std::move(content),
xeus::buffer_sequence());
p_client->send_on_control(std::move(msg));
}
nl::json xeus_logger_client::receive_on_shell()
{
std::optional<xeus::xmessage> msg_opt = p_client->receive_on_shell();
nl::json result = nl::json::object();
if (msg_opt.has_value())
{
xeus::xmessage msg = std::move(*msg_opt);
result["header"] = msg.header();
result["parent_header"] = msg.parent_header();
result["metadata"] = msg.metadata();
result["content"] = msg.content();
}
log_message(result);
return result;
}
nl::json xeus_logger_client::receive_on_control()
{
std::optional<xeus::xmessage> msg_opt = p_client->receive_on_control();
nl::json result = nl::json::object();
if (msg_opt.has_value())
{
xeus::xmessage msg = std::move(*msg_opt);
result["header"] = msg.header();
result["parent_header"] = msg.parent_header();
result["metadata"] = msg.metadata();
result["content"] = msg.content();
}
log_message(result);
return result;
}
std::size_t xeus_logger_client::iopub_queue_size() const
{
return p_client->iopub_queue_size();
}
nl::json xeus_logger_client::pop_iopub_message()
{
std::optional<xeus::xpub_message> msg_opt = p_client->pop_iopub_message();
nl::json result = nl::json::object();
if (msg_opt.has_value())
{
xeus::xpub_message msg = std::move(*msg_opt);
result["topic"] = msg.topic();
result["header"] = msg.header();
result["parent_header"] = msg.parent_header();
result["metadata"] = msg.metadata();
result["content"] = msg.content();
}
return result;
}
nl::json xeus_logger_client::wait_for_debug_event(const std::string& event)
{
bool event_found = false;
nl::json msg;
while(!event_found)
{
std::size_t s = iopub_queue_size();
if(s != 0)
{
msg = pop_iopub_message();
if(msg["topic"] == "debug_event" && msg["content"]["event"] == event)
{
event_found = true;
}
}
else
{
std::this_thread::sleep_for(std::chrono::milliseconds(100));
}
}
return msg;
}
void xeus_logger_client::start()
{
p_client->start();
}
void xeus_logger_client::stop_channels()
{
p_client->stop_channels();
}
void xeus_logger_client::log_message(nl::json msg)
{
std::lock_guard<std::mutex> guard(m_file_mutex);
std::ofstream out(m_file_name, std::ios_base::app);
out << msg.dump(4) << std::endl;
}
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