dunedaq::oks::CommandOutput Struct Reference

Public Member Functions
	CommandOutput (const char *command_name, const OksKernel *k, std::string &cmd)
	~CommandOutput ()
const std::string &	file_name () const
std::string	cat2str () const
std::string	last_str () const
void	check_command_status (int status)

Public Attributes
std::string	p_file_name
std::string &	p_command
const char *	p_command_name

Detailed Description

Definition at line 4770 of file kernel.cpp.

Constructor & Destructor Documentation

CommandOutput()

dunedaq::oks::CommandOutput::CommandOutput	(	const char *	command_name,
		const OksKernel *	k,
		std::string &	cmd )

Definition at line 4787 of file kernel.cpp.

                                                                                         :
p_command(cmd), p_command_name(command_name)
{
  p_file_name = get_temporary_dir() + '/' + command_name + '.' + std::to_string(getpid()) + ':' +  std::to_string(reinterpret_cast<std::uintptr_t>(k)) + ".txt";
 
  p_command.append(" &>");
  p_command.append(p_file_name);
}

~CommandOutput()

dunedaq::oks::CommandOutput::~CommandOutput

(

)

Definition at line 4796 of file kernel.cpp.

{
  unlink(p_file_name.c_str());
}

Member Function Documentation

cat2str()

std::string dunedaq::oks::CommandOutput::cat2str

(

)

const

Definition at line 4802 of file kernel.cpp.

{
  std::ifstream f(p_file_name.c_str());
  std::string out;
 
  if(f) {
    std::filebuf * buf = f.rdbuf();
    while(true) {
      char c = buf->sbumpc();
      if(c == EOF) break;
      else out += c;
    }
  }
 
  return out;
}

check_command_status()

void dunedaq::oks::CommandOutput::check_command_status

(

int

status

)

Definition at line 4849 of file kernel.cpp.

{
  if (status == -1)
    {
      std::ostringstream text;
      text << "cannot execute command \'" << p_command << "\': " << strerror(errno);
      throw RepositoryOperationFailed(p_command_name, text.str());
    }
  else if (int error_code = WEXITSTATUS(status))
    {
      std::ostringstream text;
      text << p_command.substr(0, p_command.find_first_of(' ')) << " exit with error code " << error_code << ", output:\n" << cat2str();
      throw RepositoryOperationFailed(p_command_name, text.str());
    }
}

file_name()

const std::string & dunedaq::oks::CommandOutput::file_name ( ) const

inline

Definition at line 4775 of file kernel.cpp.

{return p_file_name;}

last_str()

std::string dunedaq::oks::CommandOutput::last_str

(

)

const

Definition at line 4820 of file kernel.cpp.

{
  std::ifstream f(p_file_name.c_str());
  std::string lastline;
 
  if (f.is_open())
  {
    f.seekg(-1, std::ios_base::end);
    if (f.peek() == '\n')
      {
        f.seekg(-1, std::ios_base::cur);
        for (int i = f.tellg(); i >= 0; i--)
          {
            if (f.peek() == '\n')
              {
                f.get();
                break;
              }
            f.seekg(i, std::ios_base::beg);
          }
      }
 
    getline(f, lastline);
  }
  return lastline;
}

Member Data Documentation

p_command

std::string& dunedaq::oks::CommandOutput::p_command

Definition at line 4782 of file kernel.cpp.

p_command_name

const char* dunedaq::oks::CommandOutput::p_command_name

Definition at line 4783 of file kernel.cpp.

p_file_name

std::string dunedaq::oks::CommandOutput::p_file_name

Definition at line 4781 of file kernel.cpp.

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The documentation for this struct was generated from the following file:

• /github/workspace/dunedaq/sourcecode/oks/src/kernel.cpp