proxygen::StateMachine< T > Class Template Reference

#include <StateMachine.h>

Public Types
using	State = typename T::State
using	Event = typename T::Event

Static Public Member Functions
static State	getNewInstance ()
static bool	transit (State &state, Event event)
static bool	canTransit (const State state, Event event)

Detailed Description

template<typename T>
class proxygen::StateMachine< T >

Definition at line 18 of file StateMachine.h.

Member Typedef Documentation

template<typename T >

using proxygen::StateMachine< T >::Event = typename T::Event

Definition at line 21 of file StateMachine.h.

template<typename T >

using proxygen::StateMachine< T >::State = typename T::State

Definition at line 20 of file StateMachine.h.

Member Function Documentation

template<typename T >

static bool proxygen::StateMachine< T >::canTransit ( const State  state, Event  event  )

inlinestatic

Definition at line 44 of file StateMachine.h.

Referenced by proxygen::HTTPTransaction::canSendHeaders().

                                                         {
    bool ok;

    std::tie(std::ignore, ok) = T::find(state, event);
    return ok;
  }

template<typename T >

static State proxygen::StateMachine< T >::getNewInstance ( )

inlinestatic

Definition at line 23 of file StateMachine.h.

                                {
    return T::getInitialState();
  }

template<typename T >

static bool proxygen::StateMachine< T >::transit ( State &  state, Event  event  )

inlinestatic

Definition at line 27 of file StateMachine.h.

References proxygen::ERROR.

Referenced by EgressStateMachineFixture::fail(), IngressStateMachineFixture::fail(), EgressStateMachineFixture::follow(), IngressStateMachineFixture::follow(), proxygen::HTTPTransaction::sendBody(), proxygen::HTTPTransaction::sendBodyNow(), proxygen::HTTPTransaction::sendChunkHeader(), proxygen::HTTPTransaction::sendChunkTerminator(), proxygen::HTTPTransaction::sendEOM(), proxygen::HTTPTransaction::sendEOMNow(), proxygen::HTTPTransaction::sendHeadersWithOptionalEOM(), proxygen::HTTPTransaction::sendTrailers(), and proxygen::HTTPTransaction::validateIngressStateTransition().

                                                 {
    bool ok;
    State newState;

    std::tie(newState, ok) = T::find(state, event);
    if (!ok) {
      LOG(ERROR) << T::getName() << ": invalid transition tried: " << state
                 << " " << event;
      return false;
    } else {
      VLOG(6) << T::getName() << ": transitioning from " << state << " to "
              << newState;
      state = newState;
      return true;
    }
  }

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

• proxygen/lib/utils/StateMachine.h