/*
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may be used to endorse or promote products derived from this software
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*/
package org.dcache.webadmin.model.dataaccess.impl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.jdo.JDOException;
import javax.jdo.PersistenceManager;
import javax.jdo.PersistenceManagerFactory;
import javax.jdo.Transaction;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import org.dcache.alarms.dao.AlarmJDOUtils;
import org.dcache.alarms.dao.AlarmJDOUtils.AlarmDAOFilter;
import org.dcache.alarms.LogEntry;
import org.dcache.webadmin.model.dataaccess.LogEntryDAO;
/**
* DataNucleus wrapper to underlying alarm store.<br>
* <br>
* Supports webadmin queries and updates.<br>
* <br>
*
* @author arossi
*/
public class DataNucleusAlarmStore implements LogEntryDAO {
private static final Logger logger
= LoggerFactory.getLogger(DataNucleusAlarmStore.class);
private PersistenceManagerFactory pmf;
public void setPersistenceManagerFactory(PersistenceManagerFactory pmf) {
this.pmf = pmf;
}
@Override
public Collection<LogEntry> get(AlarmDAOFilter filter) {
PersistenceManager readManager = pmf.getPersistenceManager();
if (readManager == null) {
return Collections.emptyList();
}
Transaction tx = readManager.currentTransaction();
try {
tx.begin();
Collection<LogEntry> result = AlarmJDOUtils.execute(readManager,
filter);
logger.debug("got collection {}", result);
Collection<LogEntry> detached = readManager.detachCopyAll(result);
logger.debug("got detatched collection {}", detached);
tx.commit();
logger.debug("successfully executed get for filter {}", filter);
return detached;
} catch (JDOException t) {
logJDOException("get", filter, t);
return Collections.emptyList();
} finally {
try {
AlarmJDOUtils.rollbackIfActive(tx);
} finally {
readManager.close();
}
}
}
public boolean isConnected() {
return pmf != null && pmf.getPersistenceManager() != null;
}
@Override
public long remove(Collection<LogEntry> selected) {
if (selected.isEmpty()) {
return 0;
}
PersistenceManager deleteManager = pmf.getPersistenceManager();
if (deleteManager == null) {
return 0;
}
Transaction tx = deleteManager.currentTransaction();
AlarmDAOFilter filter = AlarmJDOUtils.getIdFilter(selected);
try {
tx.begin();
long removed = AlarmJDOUtils.delete(deleteManager, filter);
tx.commit();
logger.debug("successfully removed {} entries", removed);
return removed;
} catch (JDOException t) {
logJDOException("remove", filter, t);
return 0;
} finally {
try {
AlarmJDOUtils.rollbackIfActive(tx);
} finally {
deleteManager.close();
}
}
}
@Override
public long update(Collection<LogEntry> selected) {
if (selected.isEmpty()) {
return 0;
}
PersistenceManager updateManager = pmf.getPersistenceManager();
if (updateManager == null) {
return 0;
}
Transaction tx = updateManager.currentTransaction();
AlarmDAOFilter filter = AlarmJDOUtils.getIdFilter(selected);
try {
tx.begin();
Collection<LogEntry> result = AlarmJDOUtils.execute(updateManager,
filter);
logger.debug("got matching entries {}", result);
long updated = result.size();
Map<String, LogEntry> map = new HashMap<>();
for (LogEntry e : selected) {
map.put(e.getKey(), e);
}
for (LogEntry e : result) {
e.update(map.get(e.getKey()));
}
/*
* result is not detached so it will be updated on commit
*/
tx.commit();
logger.debug("successfully updated {} entries", updated);
return updated;
} catch (JDOException t) {
logJDOException("update", filter, t);
return 0;
} finally {
try {
AlarmJDOUtils.rollbackIfActive(tx);
} finally {
updateManager.close();
}
}
}
private void logJDOException(String action, AlarmDAOFilter filter,
JDOException e) {
/*
* JDOException extends RuntimeException, but we treat it as
* a checked exception here; the SQL error should neither
* be dealt with by the client nor be propagated up in this case
*/
if (filter == null) {
logger.error("alarm data, failed to {}: {}",
action, e.getMessage());
} else {
logger.error("alarm data, failed to {}, {}: {}",
action, filter, e.getMessage());
}
logger.debug("{}", action, e);
}
}