bool sinsp_container_manager::set_mesos_task_id(sinsp_container_info* container, sinsp_threadinfo* tinfo)
{
ASSERT(container);
ASSERT(tinfo);
// there are applications that do not share their environment in /proc/[PID]/environ
// since we need MESOS_TASK_ID environment variable to discover Mesos containers,
// there is a workaround for such cases:
// - for docker containers, we discover it directly from container, through Remote API
// (see sinsp_container_manager::parse_docker() for details)
// - for mesos native containers, parent process has the MESOS_TASK_ID (or equivalent, see
// get_env_mesos_task_id(sinsp_threadinfo*) implementation) environment variable, so we
// peek into the parent process environment to discover it
if(container && tinfo)
{
string& mtid = container->m_mesos_task_id;
if(mtid.empty())
{
mtid = get_env_mesos_task_id(tinfo);
if(!mtid.empty())
{
g_logger.log("Mesos native container: [" + container->m_id + "], Mesos task ID: " + mtid, sinsp_logger::SEV_DEBUG);
return true;
}
else
{
g_logger.log("Mesos task ID not found for Mesos container [" + container->m_id + "],"
"thread [" + std::to_string(tinfo->m_tid) + ']', sinsp_logger::SEV_WARNING);
}
}
}
return false;
}
string sinsp_container_manager::get_env_mesos_task_id(sinsp_threadinfo* tinfo)
{
string mtid;
if(tinfo)
{
// Mesos task ID detection is not a straightforward task;
// this list may have to be extended.
mtid = tinfo->get_env("MESOS_TASK_ID"); // Marathon
if(!mtid.empty()) { return mtid; }
mtid = tinfo->get_env("mesos_task_id"); // Chronos
if(!mtid.empty()) { return mtid; }
mtid = tinfo->get_env("MESOS_EXECUTOR_ID"); // others
if(!mtid.empty()) { return mtid; }
sinsp_threadinfo* ptinfo = tinfo->get_parent_thread();
if(ptinfo && ptinfo->m_tid > 1)
{
mtid = get_env_mesos_task_id(ptinfo);
}
}
return mtid;
}
bool libsinsp::container_engine::mesos::set_mesos_task_id(sinsp_container_info* container, sinsp_threadinfo* tinfo)
{
ASSERT(container);
ASSERT(tinfo);
// there are applications that do not share their environment in /proc/[PID]/environ
// since we need MESOS_TASK_ID environment variable to discover Mesos containers,
// there is a workaround for such cases:
// - for docker containers, we discover it directly from container, through Remote API
// (see sinsp_container_manager::parse_docker() for details)
// - for mesos native containers, parent process has the MESOS_TASK_ID (or equivalent, see
// get_env_mesos_task_id(sinsp_threadinfo*) implementation) environment variable, so we
// peek into the parent process environment to discover it
if(container && tinfo)
{
string& mtid = container->m_mesos_task_id;
if(mtid.empty())
{
mtid = get_env_mesos_task_id(tinfo);
// Ensure that the mesos task id vaguely looks
// like a real id. We assume it must be at
// least 3 characters and contain a dot or underscore
if(!mtid.empty() && mtid.length()>=3 &&
(mtid.find_first_of("._") != std::string::npos))
{
g_logger.log("Mesos native container: [" + container->m_id + "], Mesos task ID: " + mtid, sinsp_logger::SEV_DEBUG);
return true;
}
else
{
g_logger.log("Mesos container [" + container->m_id + "],"
"thread [" + std::to_string(tinfo->m_tid) +
"], has likely malformed mesos task id [" + mtid + "], ignoring", sinsp_logger::SEV_DEBUG);
}
}
}
return false;
}