mirror of
https://gitee.com/acl-dev/acl.git
synced 2024-12-15 17:30:53 +08:00
512 lines
10 KiB
C++
512 lines
10 KiB
C++
#include "stdafx.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "user_client.h"
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#define STACK_SIZE 32000
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static int __rw_timeout = 0;
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static acl::channel<int> __chan_monitor;
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static std::map<acl::string, user_client*> __users;
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// 从客户端列表中删除指定的客户端对象
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static void remove_user(user_client* uc)
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{
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const char* name = uc->get_name();
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if (name == NULL || *name == 0)
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{
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printf("%s(%d): no name!\r\n", __FUNCTION__, __LINE__);
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return;
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}
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std::map<acl::string, user_client*>::iterator it = __users.find(name);
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if (it == __users.end())
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printf("%s(%d): not exist, name: %s\r\n",
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__FUNCTION__, __LINE__, name);
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else
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{
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__users.erase(it);
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printf("delete user ok, name: %s\r\n", name);
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}
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}
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// 客户端退出过程
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static void client_logout(user_client* client)
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{
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// 从客户端列表中删除
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if (client->already_login())
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remove_user(client);
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// 如果该客户端的读协程还在工作，则通知该读协程退出
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if (client->is_reading())
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{
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printf("%s(%d): user: %s, kill_reader\r\n",
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__FUNCTION__, __LINE__, client->get_name());
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client->kill_reader();
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}
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// 如果该客户端的写协程还在工作，则通知该写协程退出
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if (client->is_waiting())
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{
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printf("fiber-%d: %s(%d): user: %s, notify logout\r\n",
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acl_fiber_self(), __FUNCTION__, __LINE__,
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client->get_name());
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client->notify(MT_LOGOUT);
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}
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// 如果该客户端的读、写协程都已经退出，则通知该客户端退出
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if (!client->is_reading() && !client->is_waiting())
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client->notify_exit();
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}
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static bool client_flush(user_client* client)
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{
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acl::socket_stream& conn = client->get_stream();
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acl::string* msg;
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bool ret = true;
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// 从客户端的消息队列中提取消息并发送至该客户端
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while ((msg = client->pop()) != NULL)
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{
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if (conn.write(*msg) == -1)
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{
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printf("flush to user: %s error %s\r\n",
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client->get_name(), acl::last_serror());
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delete msg;
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ret = false;
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break;
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}
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delete msg;
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}
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return ret;
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}
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static int __nwriter = 0;
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// 客户端的写协程处理过程
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static void fiber_writer(user_client* client)
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{
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client->set_waiter();
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client->set_waiting(true);
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while (true)
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{
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int mtype;
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// 等待消息通知
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client->wait(mtype);
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// 从本身消息队列中提取消息并发送至本客户端
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if (client_flush(client) == false)
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{
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printf("%s(%d), user: %s, flush error %s\r\n",
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__FUNCTION__, __LINE__, client->get_name(),
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acl::last_serror());
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break;
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}
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#ifdef USE_CHAN
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if (mtype == MT_LOGOUT)
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{
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printf("%s(%d), user: %s, MT_LOGOUT\r\n",
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__FUNCTION__, __LINE__, client->get_name());
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break;
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}
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if (mtype == MT_KICK)
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{
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printf("%s(%d), user: %s, MT_KICK\r\n",
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__FUNCTION__, __LINE__, client->get_name());
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client->get_stream().write("You're kicked\r\n");
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break;
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}
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#else
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if (client->exiting())
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{
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printf("%s(%d), user: %s exiting\r\n",
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__FUNCTION__, __LINE__, client->get_name());
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break;
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}
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#endif
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}
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client->set_waiting(false);
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printf(">>%s(%d), user: %s, logout\r\n", __FUNCTION__, __LINE__,
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client->get_name());
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// 通知该客户端退出
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client_logout(client);
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printf("-------__nwriter: %d-----\r\n", --__nwriter);
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}
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// 客户端登入过程
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static bool client_login(user_client* uc)
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{
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acl::string buf;
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while (true)
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{
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// 读取一行数据，且自动去掉尾部的 \r\n
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if (uc->get_stream().gets(buf) == false)
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{
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printf("%s(%d): gets error %s\r\n",
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__FUNCTION__, __LINE__, acl::last_serror());
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if (errno == ETIMEDOUT)
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{
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printf("Login timeout\r\n");
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uc->get_stream().write("Login timeout\r\n");
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}
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return false;
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}
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if (!buf.empty())
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break;
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}
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// 分析登入消息，数据格式：login|xxx
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std::vector<acl::string>& tokens = buf.split2("|");
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if (tokens.size() < 2)
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{
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acl::string tmp;
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tmp.format("invalid argc: %d < 2\r\n", (int) tokens.size());
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printf("%s", tmp.c_str());
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return uc->get_stream().write(tmp) != -1;
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}
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acl::string msg;
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// 当该客户端不存在时添加进客户端列表中
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const acl::string& name = tokens[1];
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std::map<acl::string, user_client*>::iterator it = __users.find(name);
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if (it == __users.end())
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{
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__users[name] = uc;
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uc->set_name(name);
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msg.format("user %s login ok\r\n", name.c_str());
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}
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else
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msg.format("user %s already login\r\n", name.c_str());
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printf("%s", msg.c_str());
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// 通知该客户端登入成功
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return uc->get_stream().write(msg) != -1;
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}
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// 与其它客户端聊天过程
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static bool client_chat(user_client* uc, std::vector<acl::string>& tokens)
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{
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if (tokens.size() < 3)
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{
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printf("invalid argc: %d < 3\r\n", (int) tokens.size());
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return true;
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}
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const acl::string& to = tokens[1];
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const acl::string& msg = tokens[2];
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// 查找目标客户端对象
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std::map<acl::string, user_client*>::iterator it = __users.find(to);
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if (it == __users.end())
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{
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acl::string tmp;
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tmp.format("chat >> from user: %s, to user: %s not exist\r\n",
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uc->get_name(), to.c_str());
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printf("%s", tmp.c_str());
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return uc->get_stream().write(tmp) != -1;
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}
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// 将消息内容加入目标客户端的消息队列中
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it->second->push(msg);
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// 通知目标客户端的写协程处理该消息
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it->second->notify(MT_MSG);
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return true;
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}
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// 踢出一个客户端对象
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static bool client_kick(user_client* uc, std::vector<acl::string>& tokens)
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{
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if (tokens.size() < 2)
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{
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printf("invalid argc: %d < 2\r\n", (int) tokens.size());
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return true;
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}
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const acl::string& to = tokens[1];
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// 查找将被踢出的客户端对象
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std::map<acl::string, user_client*>::iterator it = __users.find(to);
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if (it == __users.end())
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{
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acl::string tmp;
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tmp.format("kick >> from user: %s, to user: %s not exist\r\n",
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uc->get_name(), to.c_str());
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printf("%s", tmp.c_str());
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return uc->get_stream().write(tmp) != -1;
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}
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// 通知客户端写协程，其被踢出
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it->second->notify(MT_KICK);
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return true;
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}
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static int __nreader = 0;
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static void fiber_reader(user_client* client)
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{
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acl::socket_stream& conn = client->get_stream();
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conn.set_rw_timeout(0);
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client->set_reader();
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client->set_reading(true);
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// 登入服务器
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if (client_login(client) == false)
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{
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client->set_reading(false);
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printf("----------client_logout-------\r\n");
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// 失败，则退出客户端
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client_logout(client);
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printf("----__nreader: %d-----\r\n", --__nreader);
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return;
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}
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// 登入成功，则创建写协程用来向客户端发送消息
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go_stack(STACK_SIZE) [&] {
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__nwriter++;
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fiber_writer(client);
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};
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conn.set_rw_timeout(0);
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bool stop = false;
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acl::string buf;
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// 从客户端循环读取消息
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while (true)
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{
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bool ret = conn.gets(buf);
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if (ret == false)
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{
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printf("%s(%d): user: %s, gets error %s, fiber: %d\r\n",
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__FUNCTION__, __LINE__, client->get_name(),
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acl::last_serror(), acl_fiber_self());
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// 客户端退出
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if (client->exiting())
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{
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printf("----exiting now----\r\n");
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break;
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}
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if (errno == ETIMEDOUT)
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{
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if (conn.write("ping\r\n") == -1)
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{
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printf("ping error\r\n");
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break;
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}
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}
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else if (errno == EAGAIN)
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printf("EAGAIN\r\n");
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else {
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printf("gets error: %d, %s\r\n",
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errno, acl::last_serror());
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break;
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}
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continue;
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}
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if (buf.empty())
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continue;
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// 分析客户端发送的消息，交由不同的处理过程
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std::vector<acl::string>& tokens = buf.split2("|");
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// 本客户端要求退出
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if (tokens[0] == "quit" || tokens[0] == "exit")
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{
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conn.write("Bye!\r\n");
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break;
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}
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// 本客户端发送聊天消息
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else if (tokens[0] == "chat")
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{
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if (client_chat(client, tokens) == false)
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break;
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}
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// 本客户端踢出其它客户端
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else if (tokens[0] == "kick")
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{
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if (client_kick(client, tokens) == false)
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break;
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}
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// 要求整个服务进程退出
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else if (tokens[0] == "stop")
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{
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stop = true;
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break;
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}
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else
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printf("invalid data: %s, cmd: [%s]\r\n",
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buf.c_str(), tokens[0].c_str());
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}
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printf(">>%s(%d), user: %s, logout\r\n", __FUNCTION__, __LINE__,
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client->get_name());
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client->set_reading(false);
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// 退出客户端
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client_logout(client);
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printf("----__nreader: %d-----\r\n", --__nreader);
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if (stop)
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{
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int dumy = 1;
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// 如果要停止服务，则通知监控协程
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__chan_monitor.put(dumy);
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}
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}
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static int __nclients = 0;
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static void fiber_client(acl::socket_stream* conn)
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{
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// 创建客户端对象
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user_client* client = new user_client(*conn);
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// 创建从客户端连接读取数据的协程
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go_stack(STACK_SIZE) [=] {
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__nreader++;
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fiber_reader(client);
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};
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// 等待该客户端连接对象退出
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client->wait_exit();
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printf("----- client (%s), exit now -----\r\n", client->get_name());
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// 删除客户端对象及客户端连接对象
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delete client;
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delete conn;
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printf("----__nclients: %d-----\r\n", --__nclients);
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printf("----dead fibers: %d---\r\n", acl_fiber_ndead());
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}
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static ACL_FIBER *__fiber_accept = NULL;
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static void fiber_accept(acl::server_socket& ss)
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{
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__fiber_accept = acl_fiber_running();
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while (true)
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{
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// 等待接收客户端连接
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acl::socket_stream* conn = ss.accept();
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if (conn == NULL)
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{
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printf("accept error %s\r\n", acl::last_serror());
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break;
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}
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// 创建处理客户端对象的协程
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go_stack(STACK_SIZE) [=] {
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__nclients++;
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fiber_client(conn);
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};
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}
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}
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static void fiber_monitor(void)
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{
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int n;
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// 等待消息通知
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__chan_monitor.pop(n);
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printf("--- kill fiber_accept ---\r\n");
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// 杀死监听协程
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acl_fiber_kill(__fiber_accept);
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printf("--- stop fiber schedule ---\r\n");
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// 停止协程调度过程
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acl_fiber_schedule_stop();
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}
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static void usage(const char *procname)
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{
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printf("usage: %s -h [help]\r\n"
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" -s listen_addr\r\n"
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" -r rw_timeout\r\n" , procname);
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}
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int main(int argc, char *argv[])
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{
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char addr[64];
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int ch;
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// 允许 acl 库的日志输出至屏幕
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acl::log::stdout_open(true);
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snprintf(addr, sizeof(addr), "%s", "127.0.0.1:9002");
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while ((ch = getopt(argc, argv, "hs:r:")) > 0) {
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switch (ch) {
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case 'h':
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usage(argv[0]);
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return 0;
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case 's':
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snprintf(addr, sizeof(addr), "%s", optarg);
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break;
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case 'r':
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__rw_timeout = atoi(optarg);
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break;
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default:
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break;
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}
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}
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acl::server_socket ss; // 监听套接口对象
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// 监听指定地址
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if (ss.open(addr) == false)
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{
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printf("listen %s error %s\r\n", addr, acl::last_serror());
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return 1;
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}
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printf("listen %s ok\r\n", addr);
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// 创建服务器接收连接协程
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go[&] {
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fiber_accept(ss);
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};
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// 创建监控协程
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go[] {
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fiber_monitor();
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};
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// 启动协程调度过程
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acl::fiber::schedule();
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return 0;
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}
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