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/*
* Copyright 2011-2013 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
#ifndef __DEVICE_NETWORK_H__
#define __DEVICE_NETWORK_H__
#ifdef WITH_NETWORK
#include <boost/archive/text_iarchive.hpp>
#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/binary_iarchive.hpp>
#include <boost/archive/binary_oarchive.hpp>
#include <boost/array.hpp>
#include <boost/asio.hpp>
#include <boost/bind.hpp>
#include <boost/serialization/vector.hpp>
#include <boost/thread.hpp>
#include <iostream>
#include <sstream>
#include <deque>
#include "buffers.h"
#include "util_foreach.h"
#include "util_list.h"
#include "util_map.h"
#include "util_string.h"
CCL_NAMESPACE_BEGIN
using std::cout;
using std::cerr;
using std::hex;
using std::setw;
using std::exception;
using boost::asio::ip::tcp;
static const int SERVER_PORT = 5120;
static const int DISCOVER_PORT = 5121;
static const string DISCOVER_REQUEST_MSG = "REQUEST_RENDER_SERVER_IP";
static const string DISCOVER_REPLY_MSG = "REPLY_RENDER_SERVER_IP";
#if 0
typedef boost::archive::text_oarchive o_archive;
typedef boost::archive::text_iarchive i_archive;
#else
typedef boost::archive::binary_oarchive o_archive;
typedef boost::archive::binary_iarchive i_archive;
#endif
/* Serialization of device memory */
class network_device_memory : public device_memory
{
public:
network_device_memory() {}
~network_device_memory() { device_pointer = 0; };
vector<char> local_data;
};
/* Common netowrk error function / object for both DeviceNetwork and DeviceServer*/
class NetworkError {
public:
NetworkError() {
error = "";
error_count = 0;
}
~NetworkError() {}
void network_error(const string& message) {
error = message;
error_count += 1;
}
bool have_error() {
return true ? error_count > 0 : false;
}
private:
string error;
int error_count;
};
/* Remote procedure call Send */
class RPCSend {
public:
RPCSend(tcp::socket& socket_, NetworkError* e, const string& name_ = "")
: name(name_), socket(socket_), archive(archive_stream), sent(false)
{
archive & name_;
error_func = e;
fprintf(stderr, "rpc send %s\n", name.c_str());
}
~RPCSend()
{
}
void add(const device_memory& mem)
{
archive & mem.data_type & mem.data_elements & mem.data_size;
archive & mem.data_width & mem.data_height & mem.device_pointer;
}
template<typename T> void add(const T& data)
{
archive & data;
}
void add(const DeviceTask& task)
{
int type = (int)task.type;
archive & type & task.x & task.y & task.w & task.h;
archive & task.rgba_byte & task.rgba_half & task.buffer & task.sample & task.num_samples;
archive & task.offset & task.stride;
archive & task.shader_input & task.shader_output & task.shader_eval_type;
archive & task.shader_x & task.shader_w;
archive & task.need_finish_queue;
}
void add(const RenderTile& tile)
{
archive & tile.x & tile.y & tile.w & tile.h;
archive & tile.start_sample & tile.num_samples & tile.sample;
archive & tile.resolution & tile.offset & tile.stride;
archive & tile.buffer & tile.rng_state;
}
void write()
{
boost::system::error_code error;
/* get string from stream */
string archive_str = archive_stream.str();
/* first send fixed size header with size of following data */
ostringstream header_stream;
header_stream << setw(8) << hex << archive_str.size();
string header_str = header_stream.str();
boost::asio::write(socket,
boost::asio::buffer(header_str),
boost::asio::transfer_all(), error);
if(error.value())
error_func->network_error(error.message());
/* then send actual data */
boost::asio::write(socket,
boost::asio::buffer(archive_str),
boost::asio::transfer_all(), error);
if(error.value())
error_func->network_error(error.message());
sent = true;
}
void write_buffer(void *buffer, size_t size)
{
boost::system::error_code error;
boost::asio::write(socket,
boost::asio::buffer(buffer, size),
boost::asio::transfer_all(), error);
if(error.value())
error_func->network_error(error.message());
}
protected:
string name;
tcp::socket& socket;
ostringstream archive_stream;
o_archive archive;
bool sent;
NetworkError *error_func;
};
/* Remote procedure call Receive */
class RPCReceive {
public:
RPCReceive(tcp::socket& socket_, NetworkError* e )
: socket(socket_), archive_stream(NULL), archive(NULL)
{
error_func = e;
/* read head with fixed size */
vector<char> header(8);
boost::system::error_code error;
size_t len = boost::asio::read(socket, boost::asio::buffer(header), error);
if(error.value()){
error_func->network_error(error.message());
}
/* verify if we got something */
if(len == header.size()) {
/* decode header */
string header_str(&header[0], header.size());
istringstream header_stream(header_str);
size_t data_size;
if((header_stream >> hex >> data_size)) {
vector<char> data(data_size);
size_t len = boost::asio::read(socket, boost::asio::buffer(data), error);
if(error.value())
error_func->network_error(error.message());
if(len == data_size) {
archive_str = (data.size())? string(&data[0], data.size()): string("");
archive_stream = new istringstream(archive_str);
archive = new i_archive(*archive_stream);
*archive & name;
fprintf(stderr, "rpc receive %s\n", name.c_str());
}
else {
error_func->network_error("Network receive error: data size doesn't match header");
}
}
else {
error_func->network_error("Network receive error: can't decode data size from header");
}
}
else {
error_func->network_error("Network receive error: invalid header size");
}
}
~RPCReceive()
{
delete archive;
delete archive_stream;
}
void read(network_device_memory& mem)
{
*archive & mem.data_type & mem.data_elements & mem.data_size;
*archive & mem.data_width & mem.data_height & mem.device_pointer;
mem.data_pointer = 0;
}
template<typename T> void read(T& data)
{
*archive & data;
}
void read_buffer(void *buffer, size_t size)
{
boost::system::error_code error;
size_t len = boost::asio::read(socket, boost::asio::buffer(buffer, size), error);
if(error.value()){
error_func->network_error(error.message());
}
if(len != size)
cout << "Network receive error: buffer size doesn't match expected size\n";
}
void read(DeviceTask& task)
{
int type;
*archive & type & task.x & task.y & task.w & task.h;
*archive & task.rgba_byte & task.rgba_half & task.buffer & task.sample & task.num_samples;
*archive & task.offset & task.stride;
*archive & task.shader_input & task.shader_output & task.shader_eval_type;
*archive & task.shader_x & task.shader_w;
*archive & task.need_finish_queue;
task.type = (DeviceTask::Type)type;
}
void read(RenderTile& tile)
{
*archive & tile.x & tile.y & tile.w & tile.h;
*archive & tile.start_sample & tile.num_samples & tile.sample;
*archive & tile.resolution & tile.offset & tile.stride;
*archive & tile.buffer & tile.rng_state;
tile.buffers = NULL;
}
string name;
protected:
tcp::socket& socket;
string archive_str;
istringstream *archive_stream;
i_archive *archive;
NetworkError *error_func;
};
/* Server auto discovery */
class ServerDiscovery {
public:
ServerDiscovery(bool discover = false)
: listen_socket(io_service), collect_servers(false)
{
/* setup listen socket */
listen_endpoint.address(boost::asio::ip::address_v4::any());
listen_endpoint.port(DISCOVER_PORT);
listen_socket.open(listen_endpoint.protocol());
boost::asio::socket_base::reuse_address option(true);
listen_socket.set_option(option);
listen_socket.bind(listen_endpoint);
/* setup receive callback */
async_receive();
/* start server discovery */
if(discover) {
collect_servers = true;
servers.clear();
broadcast_message(DISCOVER_REQUEST_MSG);
}
/* start thread */
work = new boost::asio::io_service::work(io_service);
thread = new boost::thread(boost::bind(&boost::asio::io_service::run, &io_service));
}
~ServerDiscovery()
{
io_service.stop();
thread->join();
delete thread;
delete work;
}
vector<string> get_server_list()
{
vector<string> result;
mutex.lock();
result = vector<string>(servers.begin(), servers.end());
mutex.unlock();
return result;
}
private:
void handle_receive_from(const boost::system::error_code& error, size_t size)
{
if(error) {
cout << "Server discovery receive error: " << error.message() << "\n";
return;
}
if(size > 0) {
string msg = string(receive_buffer, size);
/* handle incoming message */
if(collect_servers) {
if(msg == DISCOVER_REPLY_MSG) {
string address = receive_endpoint.address().to_string();
mutex.lock();
/* add address if it's not already in the list */
bool found = std::find(servers.begin(), servers.end(),
address) != servers.end();
if(!found)
servers.push_back(address);
mutex.unlock();
}
}
else {
/* reply to request */
if(msg == DISCOVER_REQUEST_MSG)
broadcast_message(DISCOVER_REPLY_MSG);
}
}
async_receive();
}
void async_receive()
{
listen_socket.async_receive_from(
boost::asio::buffer(receive_buffer), receive_endpoint,
boost::bind(&ServerDiscovery::handle_receive_from, this,
boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred));
}
void broadcast_message(const string& msg)
{
/* setup broadcast socket */
boost::asio::ip::udp::socket socket(io_service);
socket.open(boost::asio::ip::udp::v4());
boost::asio::socket_base::broadcast option(true);
socket.set_option(option);
boost::asio::ip::udp::endpoint broadcast_endpoint(
boost::asio::ip::address::from_string("255.255.255.255"), DISCOVER_PORT);
/* broadcast message */
socket.send_to(boost::asio::buffer(msg), broadcast_endpoint);
}
/* network service and socket */
boost::asio::io_service io_service;
boost::asio::ip::udp::endpoint listen_endpoint;
boost::asio::ip::udp::socket listen_socket;
/* threading */
boost::thread *thread;
boost::asio::io_service::work *work;
boost::mutex mutex;
/* buffer and endpoint for receiving messages */
char receive_buffer[256];
boost::asio::ip::udp::endpoint receive_endpoint;
// os, version, devices, status, host name, group name, ip as far as fields go
struct ServerInfo {
string cycles_version;
string os;
int device_count;
string status;
string host_name;
string group_name;
string host_addr;
};
/* collection of server addresses in list */
bool collect_servers;
vector<string> servers;
};
CCL_NAMESPACE_END
#endif
#endif /* __DEVICE_NETWORK_H__ */
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