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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/**
* \file JournalRunState.cpp
*/
#include "JournalRunState.h"
#include "JournalError.h"
#include <sstream>
namespace qpid {
namespace asyncStore {
namespace jrnl2 {
JournalRunState::JournalRunState() :
State<journalState_t>()
{}
JournalRunState::JournalRunState(const JournalRunState& s) :
State<journalState_t>(s)
{}
JournalRunState::JournalRunState(const journalState_t s) :
State<journalState_t>(s)
{}
JournalRunState::~JournalRunState()
{}
void
JournalRunState::initialize()
{
set(JS_INITIALIZING);
}
void
JournalRunState::recoverPhase1()
{
set(JS_RECOVERING_PHASE_1);
}
void
JournalRunState::recoverPhase2()
{
set(JS_RECOVERING_PHASE_2);
}
void
JournalRunState::run()
{
set(JS_RUNNING);
}
void
JournalRunState::stop()
{
set(JS_STOPPING);
}
void
JournalRunState::stopped()
{
set(JS_STOPPED);
}
const char*
JournalRunState::getAsStr() const
{
return s_toStr(m_state);
}
// static
const char*
JournalRunState::s_toStr(const journalState_t s)
{
switch (s) {
case JS_NONE:
return "JS_NONE";
case JS_RECOVERING_PHASE_1:
return "JS_RECOVERING_PHASE_1";
case JS_RECOVERING_PHASE_2:
return "JS_RECOVERING_PHASE_2";
case JS_INITIALIZING:
return "JS_INITIALIZING";
case JS_RUNNING:
return "JS_RUNNING";
case JS_STOPPING:
return "JS_STOPPING";
case JS_STOPPED:
return "JS_STOPPED";
default:
std::ostringstream oss;
oss << "<unknown state (" << "s" << ")>";
return oss.str().c_str();
}
}
// protected
void
JournalRunState::set(const journalState_t s)
{
// State transition logic: set stateError to true if an invalid transition is attempted
bool stateTransitionError = false;
switch(m_state) {
case JS_NONE:
if (s != JS_RECOVERING_PHASE_1 && s != JS_INITIALIZING) stateTransitionError = true;
break;
case JS_RECOVERING_PHASE_1:
if (s != JS_RECOVERING_PHASE_2) stateTransitionError = true;
break;
case JS_RECOVERING_PHASE_2:
case JS_INITIALIZING:
if (s != JS_RUNNING) stateTransitionError = true;
break;
case JS_RUNNING:
if (s != JS_STOPPING) stateTransitionError = true;
break;
case JS_STOPPING:
if (s != JS_STOPPED) stateTransitionError = true;
break;
case JS_STOPPED: // Cannot move out of this state except with reset()
stateTransitionError = true;
break;
}
if (stateTransitionError) {
THROW_STATE_EXCEPTION(JournalError::JERR_JRNLRUNSTATE, s_toStr(s), s_toStr(m_state),
"JournalState", "set");
}
m_state = s;
}
}}} // namespace qpid::asyncStore::jrnl2
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