164 lines
4.0 KiB
C++
164 lines
4.0 KiB
C++
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#include "iostream"
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#include "fstream"
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#include <boost/json.hpp>
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#include "tt/Mq.h"
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#include "tt/Pipe.h"
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#include "main/subsys_call.hh"
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namespace qing {
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namespace subsys_call {
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/*-------------------------------------------------------------------------*/
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/* -------- 向pmc的消息队列发送启动命令并且从管道接收回复 -------- */
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std::string send_start_and_recv_pipe(const std::string& name_mq, const std::string& exec)
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try {
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auto name_pipe = std::to_string(getpid());
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auto mq = Mq(name_mq, 2048, 100, Mq::USER); /* 放在这里避免管道文件的残留 */
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boost::json::object obj;
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obj["pipe"] = name_pipe;
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obj["type"] = "exec";
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obj["exec"] = exec;
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auto jsonstr = boost::json::serialize(obj);
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auto pipe = Pipe(name_pipe, Pipe::CREATOR); /* FIXME: 创建管道文件到/tmp下面 */
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if (!pipe.openForRead(true)) {
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std::cerr << "Failed to open pipe" << std::endl;
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return "ERR";
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}
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mq.send(jsonstr);
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if (!pipe.waitForRead(1, 0)) {
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std::cerr << "Pipe Read Timeout" << std::endl;
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return "ERR";
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}
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std::string res = "";
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if (pipe.readPipe(&res) < 0) {
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std::cerr << "Failed to read pipe" << std::endl;
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return "ERR";
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}
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return res;
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}
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//catch (boost::interprocess::interprocess_exception &exp) {
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// std::cerr << "Target Pmc Is Not Found" << std::endl;
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// return 1;
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//}
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catch (std::exception &exp) {
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std::cerr << "Exception at: send_start_and_recv_pipe()" << std::endl;
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std::cerr << "Exception type: " << typeid(exp).name() << std::endl;
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std::cerr << "Exception info: " << exp.what() << std::endl;
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return "ERR";
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}
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/* -------- 向目标子系统发送列举命令并收集结果 -------- */
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std::string send_list_and_recv_pipe(const std::string& name_mq)
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try {
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auto name_pipe = std::to_string(getpid());
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auto mq = Mq(name_mq, 2048, 100, Mq::USER);
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boost::json::object obj;
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obj["pipe"] = name_pipe;
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obj["type"] = "list";
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auto jsonstr = boost::json::serialize(obj);
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auto pipe = Pipe(name_pipe, Pipe::CREATOR);
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if (!pipe.openForRead(true)) {
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std::cerr << "Failed to open pipe" << std::endl;
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return "ERR";
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}
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mq.send(jsonstr);
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if (!pipe.waitForRead(1, 0)) {
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std::cerr << "Pipe Read Timeout" << std::endl;
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return "ERR";
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}
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std::string res = "";
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if (pipe.readPipe(&res) < 0) {
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std::cerr << "Failed to read pipe" << std::endl;
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return "ERR";
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}
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return res;
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}
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//catch (boost::interprocess::interprocess_exception &exp) {
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// std::cerr << "Target Pmc Is Not Found" << std::endl;
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// return 1;
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//}
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catch (std::exception &exp) {
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std::cerr << "Exception at: send_list_and_recv_pipe()" << std::endl;
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std::cerr << "Exception type: " << typeid(exp).name() << std::endl;
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std::cerr << "Exception info: " << exp.what() << std::endl;
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return "ERR";
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}
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/* -------- 删除操作调用 -------- */
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std::string send_kill_and_recv_pipe(const std::string& name_mq, const int kill)
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try{
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auto name_pipe = std::to_string(getpid());
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auto mq = Mq(name_mq, 2048, 100, Mq::USER);
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boost::json::object obj;
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obj["pipe"] = name_pipe;
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obj["type"] = "kill";
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obj["kill"] = kill;
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auto jsonstr = boost::json::serialize(obj);
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auto pipe = Pipe(name_pipe, Pipe::CREATOR);
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if (!pipe.openForRead(true)) {
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std::cerr << "Failed to open pipe" << std::endl;
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return "ERR";
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}
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mq.send(jsonstr);
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if (!pipe.waitForRead(1, 0)) {
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std::cerr << "Pipe Read Timeout" << std::endl;
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return "ERR";
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}
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std::string res = "";
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if (pipe.readPipe(&res) < 0) {
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std::cerr << "Failed to read pipe" << std::endl;
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return "ERR";
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}
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else return res;
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}
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/* 没有打开目标子系统的消息队列时，会触发这个异常
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* 但是实际上这里捕获的是进程间通信通用异常（旧版） */
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//catch (boost::interprocess::interprocess_exception &exp) {
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// std::cerr << "Target Pmc Is Not Found" << std::endl;
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// return 1;
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//}
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/* 这些函数抛出异常后可能导致管道文件残留 */
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catch (std::exception &exp) {
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std::cerr << "Exception at: send_kill_and_recv_pipe()" << std::endl;
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std::cerr << "Exception type: " << typeid(exp).name() << std::endl;
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std::cerr << "Exception info: " << exp.what() << std::endl;
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return "ERR";
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}
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}
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}
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