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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include <ostream>
#include "include/ceph_assert.h"
#include "StateTransition.h"
namespace rbd {
namespace mirror {
namespace image_map {
std::ostream &operator<<(std::ostream &os,
const StateTransition::State &state) {
switch(state) {
case StateTransition::STATE_INITIALIZING:
os << "INITIALIZING";
break;
case StateTransition::STATE_ASSOCIATING:
os << "ASSOCIATING";
break;
case StateTransition::STATE_ASSOCIATED:
os << "ASSOCIATED";
break;
case StateTransition::STATE_SHUFFLING:
os << "SHUFFLING";
break;
case StateTransition::STATE_DISSOCIATING:
os << "DISSOCIATING";
break;
case StateTransition::STATE_UNASSOCIATED:
os << "UNASSOCIATED";
break;
}
return os;
}
std::ostream &operator<<(std::ostream &os,
const StateTransition::PolicyAction &policy_action) {
switch(policy_action) {
case StateTransition::POLICY_ACTION_MAP:
os << "MAP";
break;
case StateTransition::POLICY_ACTION_UNMAP:
os << "UNMAP";
break;
case StateTransition::POLICY_ACTION_REMOVE:
os << "REMOVE";
break;
}
return os;
}
const StateTransition::TransitionTable StateTransition::s_transition_table {
// state current_action Transition
// ---------------------------------------------------------------------------
{{STATE_INITIALIZING, ACTION_TYPE_NONE}, {ACTION_TYPE_ACQUIRE, {}, {},
{}}},
{{STATE_INITIALIZING, ACTION_TYPE_ACQUIRE}, {ACTION_TYPE_NONE, {}, {},
{STATE_ASSOCIATED}}},
{{STATE_ASSOCIATING, ACTION_TYPE_NONE}, {ACTION_TYPE_MAP_UPDATE,
{POLICY_ACTION_MAP}, {}, {}}},
{{STATE_ASSOCIATING, ACTION_TYPE_MAP_UPDATE}, {ACTION_TYPE_ACQUIRE, {}, {},
{}}},
{{STATE_ASSOCIATING, ACTION_TYPE_ACQUIRE}, {ACTION_TYPE_NONE, {}, {},
{STATE_ASSOCIATED}}},
{{STATE_DISSOCIATING, ACTION_TYPE_NONE}, {ACTION_TYPE_RELEASE, {},
{POLICY_ACTION_UNMAP}, {}}},
{{STATE_DISSOCIATING, ACTION_TYPE_RELEASE}, {ACTION_TYPE_MAP_REMOVE, {},
{POLICY_ACTION_REMOVE}, {}}},
{{STATE_DISSOCIATING, ACTION_TYPE_MAP_REMOVE}, {ACTION_TYPE_NONE, {},
{}, {STATE_UNASSOCIATED}}},
{{STATE_SHUFFLING, ACTION_TYPE_NONE}, {ACTION_TYPE_RELEASE, {},
{POLICY_ACTION_UNMAP}, {}}},
{{STATE_SHUFFLING, ACTION_TYPE_RELEASE}, {ACTION_TYPE_MAP_UPDATE,
{POLICY_ACTION_MAP}, {}, {}}},
{{STATE_SHUFFLING, ACTION_TYPE_MAP_UPDATE}, {ACTION_TYPE_ACQUIRE, {}, {},
{}}},
{{STATE_SHUFFLING, ACTION_TYPE_ACQUIRE}, {ACTION_TYPE_NONE, {}, {},
{STATE_ASSOCIATED}}}
};
void StateTransition::transit(State state, Transition* transition) {
auto it = s_transition_table.find({state, transition->action_type});
ceph_assert(it != s_transition_table.end());
*transition = it->second;
}
} // namespace image_map
} // namespace mirror
} // namespace rbd
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