public List<ClientEventEntry> findLogEvents(
List<SearchConstraint> constraints, List<String> orderBy, int offset, int limit, Connection c)
throws SQLException {
StringBuffer sql =
new StringBuffer(
"select e.event_id, e.customer_id, e.user_id, e.event_time, e.description, e.has_log_file from dat_client_log_events e ");
appendWhere(sql, constraints, s_propToColumnMap);
appendOrderBy(sql, orderBy, "e.event_id desc", s_propToColumnMap);
appendLimits(sql, offset, limit);
Statement stmt = null;
ResultSet rs = null;
try {
stmt = c.createStatement();
rs = stmt.executeQuery(sql.toString());
List<ClientEventEntry> results = new ArrayList<ClientEventEntry>();
while (rs.next()) {
ClientEventEntry entry =
new ClientEventEntry(
rs.getInt(1),
rs.getInt(2),
rs.getInt(3),
resolveDate(rs.getTimestamp(4)),
rs.getString(5),
rs.getInt(6) != 0);
results.add(entry);
}
return results;
} finally {
DbUtils.safeClose(rs);
DbUtils.safeClose(stmt);
}
}
@SuppressWarnings("unchecked")
@Test
public void testAppendCustomerPrefixConstraint() throws Exception {
CustomerDAO dao = new CustomerDAO();
StringBuffer clause = new StringBuffer();
SearchConstraint sc =
new SearchConstraint(
ICustomerService.PROP_CUST_CAPABILITY_PREFIX,
SearchConstraintOperator.CONSTRAINT_EQUALS,
"val3");
dao.appendCustomerPrefixConstraint(sc, clause);
String expected =
" c.customer_id in ( select customer_id from dat_customer_capabilities where cap_value = E'val3' and cap_name = E'' ) ";
assertEquals("Wrong constraint added.", expected, clause.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);
}
}
