danicoin/src/common/rpc_client.h

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// Copyright (c) 2014-2017, 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.
#pragma once
#include <boost/optional/optional.hpp>
#include "common/http_connection.h"
#include "common/scoped_message_writer.h"
#include "rpc/core_rpc_server_commands_defs.h"
#include "storages/http_abstract_invoke.h"
#include "net/http_auth.h"
#include "net/http_client.h"
#include "string_tools.h"
namespace tools
{
class t_rpc_client final
{
private:
epee::net_utils::http::http_simple_client m_http_client;
public:
t_rpc_client(
uint32_t ip
, uint16_t port
, boost::optional<epee::net_utils::http::login> user
)
: m_http_client{}
{
m_http_client.set_server(
epee::string_tools::get_ip_string_from_int32(ip), std::to_string(port), std::move(user)
);
}
template <typename T_req, typename T_res>
bool basic_json_rpc_request(
T_req & req
, T_res & res
, std::string const & method_name
)
{
t_http_connection connection(&m_http_client);
bool ok = connection.is_open();
if (!ok)
{
fail_msg_writer() << "Couldn't connect to daemon: " << m_http_client.get_host() << ":" << m_http_client.get_port();
return false;
}
ok = ok && epee::net_utils::invoke_http_json_rpc("/json_rpc", method_name, req, res, m_http_client, t_http_connection::TIMEOUT());
if (!ok)
{
fail_msg_writer() << "Daemon request failed";
return false;
}
else
{
return true;
}
}
template <typename T_req, typename T_res>
bool json_rpc_request(
T_req & req
, T_res & res
, std::string const & method_name
, std::string const & fail_msg
)
{
t_http_connection connection(&m_http_client);
bool ok = connection.is_open();
ok = ok && epee::net_utils::invoke_http_json_rpc("/json_rpc", method_name, req, res, m_http_client, t_http_connection::TIMEOUT());
if (!ok)
{
fail_msg_writer() << "Couldn't connect to daemon: " << m_http_client.get_host() << ":" << m_http_client.get_port();
return false;
}
else if (res.status != CORE_RPC_STATUS_OK) // TODO - handle CORE_RPC_STATUS_BUSY ?
{
fail_msg_writer() << fail_msg << " -- " << res.status;
return false;
}
else
{
return true;
}
}
template <typename T_req, typename T_res>
bool rpc_request(
T_req & req
, T_res & res
, std::string const & relative_url
, std::string const & fail_msg
)
{
t_http_connection connection(&m_http_client);
bool ok = connection.is_open();
ok = ok && epee::net_utils::invoke_http_json(relative_url, req, res, m_http_client, t_http_connection::TIMEOUT());
if (!ok)
{
fail_msg_writer() << "Couldn't connect to daemon: " << m_http_client.get_host() << ":" << m_http_client.get_port();
return false;
}
else if (res.status != CORE_RPC_STATUS_OK) // TODO - handle CORE_RPC_STATUS_BUSY ?
{
fail_msg_writer() << fail_msg << " -- " << res.status;
return false;
}
else
{
return true;
}
}
bool check_connection()
{
t_http_connection connection(&m_http_client);
return connection.is_open();
}
};
}