/*
* On start-up look for deleted namespaces and auto-acknowledge action required events
*/
void monitor::EventMonitor::acknowledgeDeletedNamespaces()
{
LogEnterExit logging(__FUNCTION__, __FILE__, __LINE__);
// find action required events for all namespaces
struct event_filter filter;
memset(&filter, 0, sizeof(filter));
filter.filter_mask = NVM_FILTER_ON_AR | NVM_FILTER_ON_CODE;
filter.action_required = true;
filter.code = EVENT_CODE_HEALTH_NAMESPACE_HEALTH_STATE_CHANGED;
int eventCount = nvm_get_event_count(&filter);
if (eventCount < 0)
{
COMMON_LOG_ERROR_F("nvm_get_event_count failed with error %d", eventCount);
}
else if (eventCount > 0)
{
struct event events[eventCount];
memset(events, 0, sizeof (struct event) * eventCount);
eventCount = nvm_get_events(&filter, events, eventCount);
if (eventCount < 0)
{
COMMON_LOG_ERROR_F("nvm_get_events failed with error %d", eventCount);
}
else if (eventCount > 0)
{
std::vector<std::string> nsUids;
bool ackAll = false;
// get namespace list
int nsCount = nvm_get_namespace_count();
if (nsCount < 0)
{
COMMON_LOG_ERROR_F("nvm_get_namespace_count failed with error %d", nsCount);
}
else if (nsCount == 0)
{
ackAll = true; // no namespaces, acknowledge them all
}
else // at least one namespace
{
struct namespace_discovery namespaces[nsCount];
nsCount = nvm_get_namespaces(namespaces, nsCount);
if (nsCount < 0) // error retrieving namespace list
{
COMMON_LOG_ERROR_F("nvm_get_namespaces failed with error %d", nsCount);
}
else if (nsCount == 0) // no namespaces, acknowledge them all
{
ackAll = true;
}
else // at least one namespace
{
for (int i = 0; i < nsCount; i++)
{
NVM_UID uidStr;
uid_copy(namespaces[i].namespace_uid, uidStr);
nsUids.push_back(uidStr);
}
}
}
// don't auto-acknowledge on failure to get namespaces
if (nsCount || ackAll)
{
for (int i = 0; i < eventCount; i++)
{
if (ackAll || namespaceDeleted(events[i].uid, nsUids))
{
acknowledgeEvent(EVENT_CODE_HEALTH_NAMESPACE_HEALTH_STATE_CHANGED,
events[i].uid);
}
}
}
}
}
}
int LibWrapper::getNamespaceCount() const
{
LogEnterExit(__FUNCTION__, __FILE__, __LINE__);
return nvm_get_namespace_count();
}
/*
* Check for namespace health transitions
*/
void monitor::EventMonitor::monitorNamespaces(PersistentStore *pStore)
{
LogEnterExit logging(__FUNCTION__, __FILE__, __LINE__);
if (pStore)
{
// get namespaces
int nsCount = nvm_get_namespace_count();
if (nsCount < 0)
{
COMMON_LOG_ERROR_F("nvm_get_namespace_count failed with error %d", nsCount);
}
else if (nsCount > 0)
{
struct namespace_discovery namespaces[nsCount];
memset(namespaces, 0, sizeof (struct namespace_discovery) * nsCount);
nsCount = nvm_get_namespaces(namespaces, nsCount);
if (nsCount < 0)
{
COMMON_LOG_ERROR_F("nvm_get_namespaces failed with error %d", nsCount);
}
else if (nsCount > 0)
{
// for each namespace
for (int i = 0; i < nsCount; i++)
{
struct namespace_details details;
memset(&details, 0, sizeof (details));
NVM_UID uidStr;
uid_copy(namespaces[i].namespace_uid, uidStr);
int rc = nvm_get_namespace_details(namespaces[i].namespace_uid, &details);
if (rc != NVM_SUCCESS)
{
COMMON_LOG_ERROR_F("nvm_get_namespace_details for namespace %s failed with error %d",
uidStr, rc);
}
else
{
// get the stored state for this namespace
bool storedStateChanged = false;
struct db_namespace_state storedState;
memset(&storedState, 0, sizeof (storedState));
if (db_get_namespace_state_by_namespace_uid(pStore,
uidStr, &storedState) != DB_SUCCESS)
{
// initial state, just store current state
s_strcpy(storedState.namespace_uid, uidStr,
NAMESPACE_STATE_NAMESPACE_UID_LEN);
storedState.health_state = details.health;
storedStateChanged = true;
}
// log health transition event
else if (details.health != storedState.health_state)
{
enum event_severity severity = EVENT_SEVERITY_INFO;
bool actionRequired = false;
// namespace is failed
if (details.health == NAMESPACE_HEALTH_CRITICAL ||
details.health == NAMESPACE_HEALTH_BROKENMIRROR)
{
severity = EVENT_SEVERITY_CRITICAL;
actionRequired = true;
}
// namespace is not failed
else
{
// auto-acknowledge any old namespace health failed events
acknowledgeEvent(EVENT_CODE_HEALTH_NAMESPACE_HEALTH_STATE_CHANGED,
namespaces[i].namespace_uid);
}
std::string oldState = namespaceHealthToStr(
(enum namespace_health)storedState.health_state);
std::string newState = namespaceHealthToStr(details.health);
store_event_by_parts(
EVENT_TYPE_HEALTH,
severity,
EVENT_CODE_HEALTH_NAMESPACE_HEALTH_STATE_CHANGED,
namespaces[i].namespace_uid,
actionRequired,
uidStr,
oldState.c_str(),
newState.c_str(),
DIAGNOSTIC_RESULT_UNKNOWN);
storedStateChanged = true;
storedState.health_state = details.health;
if (db_delete_namespace_state_by_namespace_uid(pStore,
uidStr) != DB_SUCCESS)
{
COMMON_LOG_ERROR_F(
"Failed to clean up the stored health state for namespace %s",
uidStr);
}
}
if (storedStateChanged)
{
if (db_add_namespace_state(pStore, &storedState) != DB_SUCCESS)
{
COMMON_LOG_ERROR_F(
"Failed to update the stored health state for namespace %s",
uidStr);
}
}
} // end nvm_get_namespace_details
} // end for each namespace
} // end nvm_get_namespaces
} // end nvm_get_namespace_count
} // end get peristent store
}
