/**
* If 'file' exists, attempt to delete it. Logs, but doesn't throw upon failure.
*
* @param file
* @param userId only for logging.
*/
private void deleteFileIfNeeded(File file, int userId) {
if (file.exists()) {
boolean ok = file.delete();
if (!ok) {
// This is a problem because it may delay informing a client to leave
// activation.
LogMessageGen lmg = new LogMessageGen();
lmg.setSubject("Unable to delete file");
lmg.param(LoggingConsts.USER_ID, userId);
lmg.param(LoggingConsts.FILENAME, file.getAbsolutePath());
m_logCategory.error(lmg.toString());
}
}
}
public void purgeLogEvents(final List<SearchConstraint> constraints, final int daysToKeep) {
blockHereIfBadNfs();
StringBuffer sql =
new StringBuffer(
"select u.mail_directory || '/logs/' || e.event_id || '.log' "
+ "from dat_client_log_events e, dat_user_account u "
+ "where event_time < current_timestamp - (? || ' days')::interval "
+ "and e.has_log_file != 0 "
+ "and e.user_id = u.object_id");
appendWhereConstraints(sql, constraints, s_propToColumnMap);
m_logCategory.info("Purge event logs query is\n" + sql);
StringBuffer sql2 =
new StringBuffer(
"delete from dat_client_log_events "
+ "where event_time < current_timestamp - (? || ' days')::interval");
if (!constraints.isEmpty()) {
sql2.append(" and event_id in (select e.event_id from dat_client_log_events e ");
appendWhere(sql2, constraints, s_propToColumnMap);
sql2.append(")");
}
m_logCategory.info("Purge event logs query is\n" + sql2);
try {
Connection c = m_txManager.getConnection();
PreparedStatement stmt = null;
ResultSet rs = null;
boolean needsRollback = true;
try {
stmt = c.prepareStatement(sql.toString());
stmt.setInt(1, daysToKeep);
rs = stmt.executeQuery();
while (rs.next()) {
File logFile = new File(getNfsRoot(), rs.getString(1));
// nfs usage, but DB transaction takes no locks.
if (logFile.exists()) {
boolean ok = logFile.delete();
if (!ok) {
m_logger
.log("Unable to delete")
.param(LoggingConsts.FILENAME, logFile.getAbsolutePath())
.warn();
}
} // file exists.
} // each row
// Below, no nfs usage occurs. We can use the same connection.
// the 'sql delete' may use DB locks.
stmt = c.prepareStatement(sql2.toString());
stmt.setInt(1, daysToKeep);
stmt.executeUpdate();
c.commit();
needsRollback = false;
} finally {
DbUtils.safeClose(rs);
DbUtils.safeClose(stmt);
if (needsRollback) {
c.rollback();
}
m_txManager.returnConnection(c);
}
} catch (Exception ex) {
m_logger.log("Error in purgeLogEvents").warn(ex);
}
}