query_state::QueryState Class Reference

#include <QueryState.h>

Inheritance diagram for query_state::QueryState:

Collaboration diagram for query_state::QueryState:

Public Member Functions
QueryStateProxy	createQueryStateProxy ()
QueryStateProxy	createQueryStateProxy (Events::iterator parent)
Timer	createTimer (char const *event_name, Events::iterator parent)
bool	emptyLog () const
Id	getId () const
std::string const &	getQueryStr () const
std::shared_ptr< Catalog_Namespace::SessionInfo const >	getConstSessionInfo () const
boost::optional< SessionData > const &	getSessionData () const
bool	isLogged () const
void	logCallStack (std::stringstream &)
void	setLogged (bool logged)

Static Public Member Functions
template<typename... ARGS>
static std::shared_ptr< QueryState >	create (ARGS &&... args)

Private Member Functions
void	logCallStack (std::stringstream &, unsigned const depth, Events::iterator parent)
	QueryState (std::shared_ptr< Catalog_Namespace::SessionInfo const > const &, std::string query_str)

Private Attributes
Id const	id_
boost::optional< SessionData >	session_data_
std::string const	query_str_
Events	events_
std::mutex	events_mutex_
std::atomic< bool >	logged_

Static Private Attributes
static std::atomic< Id >	s_next_id {0}

Friends
class	QueryStates

Detailed Description

Definition at line 124 of file QueryState.h.

Constructor & Destructor Documentation

QueryState()

query_state::QueryState::QueryState ( std::shared_ptr< Catalog_Namespace::SessionInfo const > const &  session_info, std::string  query_str  )

private

Definition at line 55 of file QueryState.cpp.

References none.

    : id_(s_next_id++)
    , session_data_(session_info ? boost::make_optional<SessionData>(session_info)
                                 : boost::none)
    , query_str_(std::move(query_str))
    , logged_(false) {}

Member Function Documentation

create()

template<typename... ARGS>

static std::shared_ptr<QueryState> query_state::QueryState::create ( ARGS &&...  args )

inlinestatic

Definition at line 140 of file QueryState.h.

References run_benchmark_import::args.

Referenced by Parser::InsertIntoTableAsSelectStmt::execute(), Parser::CreateTableAsSelectStmt::execute(), Parser::ExportQueryStmt::execute(), and Parser::CreateViewStmt::execute().

                                                          {
    // Trick to call std::make_shared with private constructors.
    struct EnableMakeShared : public QueryState {
      EnableMakeShared(ARGS&&... args) : QueryState(std::forward<ARGS>(args)...) {}
    };
    return std::make_shared<EnableMakeShared>(std::forward<ARGS>(args)...);
  }

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createQueryStateProxy() [1/2]

QueryStateProxy query_state::QueryState::createQueryStateProxy

(

)

Definition at line 64 of file QueryState.cpp.

References events_.

                                                  {
  return createQueryStateProxy(events_.end());
}

createQueryStateProxy() [2/2]

QueryStateProxy query_state::QueryState::createQueryStateProxy

(

Events::iterator

parent

)

Definition at line 68 of file QueryState.cpp.

                                                                       {
  return QueryStateProxy(*this, parent);
}

createTimer()

Timer query_state::QueryState::createTimer	(	char const *	event_name,
		Events::iterator	parent
	)

Definition at line 72 of file QueryState.cpp.

References events_, and events_mutex_.

                                                                           {
  std::lock_guard<std::mutex> lock(events_mutex_);
  return Timer(shared_from_this(), events_.emplace(events_.end(), event_name, parent));
}

emptyLog()

bool query_state::QueryState::emptyLog ( ) const

inline

Definition at line 150 of file QueryState.h.

{ return events_.empty() && query_str_.empty(); }

getConstSessionInfo()

std::shared_ptr< Catalog_Namespace::SessionInfo const > query_state::QueryState::getConstSessionInfo

(

)

const

Definition at line 77 of file QueryState.cpp.

References session_data_.

Referenced by Calcite::checkAccessedObjectsPrivileges(), DBHandler::execute_rel_alg(), Parser::LocalConnector::getOuterFragmentCount(), Parser::getResultSet(), DBHandler::parse_to_ra(), Parser::InsertIntoTableAsSelectStmt::populateData(), Calcite::processImpl(), Parser::LocalConnector::query(), and DBHandler::sql_execute_impl().

          {
  if (!session_data_) {
    throw std::runtime_error("session_info_ was not set for this QueryState.");
  }
  if (auto retval = session_data_->session_info.lock()) {
    return retval;
  } else {
    // This can happen for a query on a database that is simultaneously dropped.
    throw std::runtime_error("session_info requested but has expired.");
  }
}

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getId()

Id query_state::QueryState::getId ( ) const

inline

Definition at line 151 of file QueryState.h.

{ return id_; }

getQueryStr()

std::string const& query_state::QueryState::getQueryStr ( ) const

inline

Definition at line 152 of file QueryState.h.

Referenced by DBHandler::execute_rel_alg_with_filter_push_down(), and DBHandler::sql_execute_impl().

{ return query_str_; }

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getSessionData()

boost::optional<SessionData> const& query_state::QueryState::getSessionData ( ) const

inline

Definition at line 155 of file QueryState.h.

{ return session_data_; }

isLogged()

bool query_state::QueryState::isLogged ( ) const

inline

Definition at line 156 of file QueryState.h.

{ return logged_.load(); }

logCallStack() [1/2]

void query_state::QueryState::logCallStack ( std::stringstream &  ss, unsigned const  depth, Events::iterator  parent  )

private

Definition at line 91 of file QueryState.cpp.

References events_.

Referenced by logCallStack().

                                                     {
  auto it = parent == events_.end() ? events_.begin() : std::next(parent);
  for (; it != events_.end(); ++it) {
    if (it->parent == parent) {
      auto duration = it->duration();  // std::optional, true if event completed
      ss << '\n'
         << std::setw(depth << 1) << ' ' << it->name << ' ' << it->thread_id
         << " - total time " << (duration ? *duration : -1) << " ms";
      logCallStack(ss, depth + 1, it);
      // If events_ is expendable, then this can be put here to speed-up large lists.
      // it = events_.erase(it); } else { ++it; } (and remove above ++it.)
    }
  }
}

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logCallStack() [2/2]

void query_state::QueryState::logCallStack

(

std::stringstream &

ss

)

Definition at line 108 of file QueryState.cpp.

References events_, events_mutex_, and logCallStack().

                                                 {
  std::lock_guard<std::mutex> lock(events_mutex_);
  logCallStack(ss, 1, events_.end());
}

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setLogged()

void query_state::QueryState::setLogged ( bool  logged )

inline

Definition at line 158 of file QueryState.h.

{ logged_.store(logged); }

Friends And Related Function Documentation

QueryStates

friend class QueryStates

friend

Definition at line 159 of file QueryState.h.

Member Data Documentation

events_

Events query_state::QueryState::events_

private

Definition at line 129 of file QueryState.h.

Referenced by createQueryStateProxy(), createTimer(), and logCallStack().

events_mutex_

std::mutex query_state::QueryState::events_mutex_

mutableprivate

Definition at line 130 of file QueryState.h.

Referenced by createTimer(), and logCallStack().

id_

Id const query_state::QueryState::id_

private

Definition at line 126 of file QueryState.h.

logged_

std::atomic<bool> query_state::QueryState::logged_

private

Definition at line 131 of file QueryState.h.

query_str_

std::string const query_state::QueryState::query_str_

private

Definition at line 128 of file QueryState.h.

s_next_id

std::atomic< query_state::Id > query_state::QueryState::s_next_id {0}

staticprivate

Definition at line 125 of file QueryState.h.

Referenced by query_state::SessionData::SessionData().

session_data_

boost::optional<SessionData> query_state::QueryState::session_data_

private

Definition at line 127 of file QueryState.h.

Referenced by getConstSessionInfo().

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The documentation for this class was generated from the following files:

• /home/jenkins-slave/workspace/core-os-doxygen/ThriftHandler/QueryState.h
• /home/jenkins-slave/workspace/core-os-doxygen/ThriftHandler/QueryState.cpp