monero/contrib/epee/include/net/abstract_tcp_server_cp.h
moneromooo-monero 5833d66f65
Change logging to easylogging++
This replaces the epee and data_loggers logging systems with
a single one, and also adds filename:line and explicit severity
levels. Categories may be defined, and logging severity set
by category (or set of categories). epee style 0-4 log level
maps to a sensible severity configuration. Log files now also
rotate when reaching 100 MB.

To select which logs to output, use the MONERO_LOGS environment
variable, with a comma separated list of categories (globs are
supported), with their requested severity level after a colon.
If a log matches more than one such setting, the last one in
the configuration string applies. A few examples:

This one is (mostly) silent, only outputting fatal errors:

MONERO_LOGS=*:FATAL

This one is very verbose:

MONERO_LOGS=*:TRACE

This one is totally silent (logwise):

MONERO_LOGS=""

This one outputs all errors and warnings, except for the
"verify" category, which prints just fatal errors (the verify
category is used for logs about incoming transactions and
blocks, and it is expected that some/many will fail to verify,
hence we don't want the spam):

MONERO_LOGS=*:WARNING,verify:FATAL

Log levels are, in decreasing order of priority:
FATAL, ERROR, WARNING, INFO, DEBUG, TRACE

Subcategories may be added using prefixes and globs. This
example will output net.p2p logs at the TRACE level, but all
other net* logs only at INFO:

MONERO_LOGS=*:ERROR,net*:INFO,net.p2p:TRACE

Logs which are intended for the user (which Monero was using
a lot through epee, but really isn't a nice way to go things)
should use the "global" category. There are a few helper macros
for using this category, eg: MGINFO("this shows up by default")
or MGINFO_RED("this is red"), to try to keep a similar look
and feel for now.

Existing epee log macros still exist, and map to the new log
levels, but since they're used as a "user facing" UI element
as much as a logging system, they often don't map well to log
severities (ie, a log level 0 log may be an error, or may be
something we want the user to see, such as an important info).
In those cases, I tried to use the new macros. In other cases,
I left the existing macros in. When modifying logs, it is
probably best to switch to the new macros with explicit levels.

The --log-level options and set_log commands now also accept
category settings, in addition to the epee style log levels.
2017-01-16 00:25:46 +00:00

237 lines
7.3 KiB
C++

// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of the Andrey N. Sabelnikov 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 OWNER 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.
//
#ifndef _LEVIN_CP_SERVER_H_
#define _LEVIN_CP_SERVER_H_
#include <winsock2.h>
#include <rpc.h>
#include <string>
#include <map>
#include <boost/shared_ptr.hpp>
#include "misc_log_ex.h"
//#include "threads_helper.h"
#include "syncobj.h"
#define ENABLE_PROFILING
#include "profile_tools.h"
#include "net_utils_base.h"
#include "pragma_comp_defs.h"
#undef MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_DEFAULT_LOG_CATEGORY "net"
#define LEVIN_DEFAULT_DATA_BUFF_SIZE 2000
namespace epee
{
namespace net_utils
{
template<class TProtocol>
class cp_server_impl//: public abstract_handler
{
public:
cp_server_impl(/*abstract_handler* phandler = NULL*/);
virtual ~cp_server_impl();
bool init_server(int port_no);
bool deinit_server();
bool run_server(int threads_count = 0);
bool send_stop_signal();
bool is_stop_signal();
virtual bool on_net_idle(){return true;}
size_t get_active_connections_num();
typename TProtocol::config_type& get_config_object(){return m_config;}
private:
enum overlapped_operation_type
{
op_type_recv,
op_type_send,
op_type_stop
};
struct io_data_base
{
OVERLAPPED m_overlapped;
WSABUF DataBuf;
overlapped_operation_type m_op_type;
DWORD TotalBuffBytes;
volatile LONG m_is_in_use;
char Buffer[1];
};
PRAGMA_WARNING_PUSH
PRAGMA_WARNING_DISABLE_VS(4355)
template<class TProtocol>
struct connection: public net_utils::i_service_endpoint
{
connection(typename TProtocol::config_type& ref_config):m_sock(INVALID_SOCKET), m_tprotocol_handler(this, ref_config, context), m_psend_data(NULL), m_precv_data(NULL), m_asked_to_shutdown(0), m_connection_shutwoned(0)
{
}
//connection():m_sock(INVALID_SOCKET), m_tprotocol_handler(this, m_dummy_config, context), m_psend_data(NULL), m_precv_data(NULL), m_asked_to_shutdown(0), m_connection_shutwoned(0)
//{
//}
connection<TProtocol>& operator=(const connection<TProtocol>& obj)
{
return *this;
}
bool init_buffers()
{
m_psend_data = (io_data_base*)new char[sizeof(io_data_base) + LEVIN_DEFAULT_DATA_BUFF_SIZE-1];
m_psend_data->TotalBuffBytes = LEVIN_DEFAULT_DATA_BUFF_SIZE;
m_precv_data = (io_data_base*)new char[sizeof(io_data_base) + LEVIN_DEFAULT_DATA_BUFF_SIZE-1];
m_precv_data->TotalBuffBytes = LEVIN_DEFAULT_DATA_BUFF_SIZE;
return true;
}
bool query_shutdown()
{
if(!::InterlockedCompareExchange(&m_asked_to_shutdown, 1, 0))
{
m_psend_data->m_op_type = op_type_stop;
::PostQueuedCompletionStatus(m_completion_port, 0, (ULONG_PTR)this, &m_psend_data->m_overlapped);
}
return true;
}
//bool set_config(typename TProtocol::config_type& config)
//{
// this->~connection();
// new(this) connection<TProtocol>(config);
// return true;
//}
~connection()
{
if(m_psend_data)
delete m_psend_data;
if(m_precv_data)
delete m_precv_data;
}
virtual bool handle_send(const void* ptr, size_t cb)
{
PROFILE_FUNC("[handle_send]");
if(m_psend_data->TotalBuffBytes < cb)
resize_send_buff((DWORD)cb);
ZeroMemory(&m_psend_data->m_overlapped, sizeof(OVERLAPPED));
m_psend_data->DataBuf.len = (u_long)cb;//m_psend_data->TotalBuffBytes;
m_psend_data->DataBuf.buf = m_psend_data->Buffer;
memcpy(m_psend_data->DataBuf.buf, ptr, cb);
m_psend_data->m_op_type = op_type_send;
InterlockedExchange(&m_psend_data->m_is_in_use, 1);
DWORD bytes_sent = 0;
DWORD flags = 0;
int res = 0;
{
PROFILE_FUNC("[handle_send] ::WSASend");
res = ::WSASend(m_sock, &(m_psend_data->DataBuf), 1, &bytes_sent, flags, &(m_psend_data->m_overlapped), NULL);
}
if(res == SOCKET_ERROR )
{
int err = ::WSAGetLastError();
if(WSA_IO_PENDING == err )
return true;
}
LOG_ERROR("BIG FAIL: WSASend error code not correct, res=" << res << " last_err=" << err);
::InterlockedExchange(&m_psend_data->m_is_in_use, 0);
query_shutdown();
//closesocket(m_psend_data);
return false;
}else if(0 == res)
{
::InterlockedExchange(&m_psend_data->m_is_in_use, 0);
if(!bytes_sent || bytes_sent != cb)
{
int err = ::WSAGetLastError();
LOG_ERROR("BIG FAIL: WSASend immediatly complete? but bad results, res=" << res << " last_err=" << err);
query_shutdown();
return false;
}else
{
return true;
}
}
return true;
}
bool resize_send_buff(DWORD new_size)
{
if(m_psend_data->TotalBuffBytes >= new_size)
return true;
delete m_psend_data;
m_psend_data = (io_data_base*)new char[sizeof(io_data_base) + new_size-1];
m_psend_data->TotalBuffBytes = new_size;
LOG_PRINT("Connection buffer resized up to " << new_size, LOG_LEVEL_3);
return true;
}
SOCKET m_sock;
net_utils::connection_context_base context;
TProtocol m_tprotocol_handler;
typename TProtocol::config_type m_dummy_config;
io_data_base* m_precv_data;
io_data_base* m_psend_data;
HANDLE m_completion_port;
volatile LONG m_asked_to_shutdown;
volatile LONG m_connection_shutwoned;
};
PRAGMA_WARNING_POP
bool worker_thread_member();
static unsigned CALLBACK worker_thread(void* param);
bool add_new_connection(SOCKET new_sock, long ip_from, int port_from);
bool shutdown_connection(connection<TProtocol>* pconn);
typedef std::map<SOCKET, boost::shared_ptr<connection<TProtocol> > > connections_container;
SOCKET m_listen_socket;
HANDLE m_completion_port;
connections_container m_connections;
critical_section m_connections_lock;
int m_port;
volatile LONG m_stop;
//abstract_handler* m_phandler;
bool m_initialized;
volatile LONG m_worker_thread_counter;
typename TProtocol::config_type m_config;
};
}
}
#include "abstract_tcp_server_cp.inl"
#endif //_LEVIN_SERVER_H_