/**
* 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 ClientSession getClientSession(String activationToken) {
if (!StringUtils.hasValue(activationToken)) {
m_logCategory.warn("activationToken is required");
return null;
}
File file = getSessionFile(activationToken);
if (!file.exists()) {
// Can't assume it's an authentication problem -- session file is removed
// during active->recovery transition.
// If this occurs, the client gets a 401 and will call into 'transition' or 'checkin'.
LogMessageGen lmg = new LogMessageGen();
lmg.setSubject("Session file not found");
lmg.param(LoggingConsts.FILENAME, file.getAbsolutePath());
m_logCategory.info(lmg.toString());
return null;
}
try {
ClientSession clientSession = null;
clientSession = new ClientSession();
clientSession.read(file);
clientSession.setActivationToken(activationToken);
return clientSession;
} catch (IOException ioe) {
// Possible if the state file was removed after the file.exists() above,
// or some other problem.
// info, not warning because a client could ask for this file right when
// the session is being removed. The client will then do a 'checkin',
// same as described above.
LogMessageGen lmg = new LogMessageGen();
lmg.setSubject("Unable to read session file");
lmg.param(LoggingConsts.FILENAME, file.getAbsolutePath());
m_logCategory.info(lmg.toString(), ioe);
}
return null;
}
/**
* If we'll block due to an nfs issue, let it block here before we open a DB connection. This
* reduces the window where an nfs problem can hoard a connection. We don't care if exists() fails
* because file calls usually create dirs lazily.
*/
private void blockHereIfBadNfs() {
m_cacheBaseDir.exists();
}
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);
}
}
public ClientSession createClientSession(IClientInfo client, String clientType) {
// Both OE and BB share the session file. Don't stomp an existing file.
if (client == null || !client.isConfigured()) {
throw new IllegalStateException("Client not configured.");
}
clientType = clientType == null ? "" : clientType;
ClientSession session = null;
String tmpName = null;
String targetName = null;
try {
File targetFile = getSessionFile(client.getLastActivationToken());
targetName = targetFile.getAbsolutePath();
if (targetFile.exists()) {
session = new ClientSession();
session.read(targetFile);
if (session.getLastActivationId() != client.getLastActivationId()
|| session.getUserId() != client.getUserId()) {
// Existing session file found but it's clearly not ours.
// A hash collision is improbable. If this occurs, its more likely to be a
// bug. We can't safely rewrite the session file because another client
// might later call getClientSession() and read our email.
// This is a support concern.
LogMessageGen lmg = new LogMessageGen();
lmg.setSubject("Found existing session, but the content is unexpected.");
lmg.param(LoggingConsts.FILENAME, targetFile.getAbsolutePath());
m_logCategory.error(lmg.toString());
throw new ClientServiceException("");
}
session.setActivationToken(client.getLastActivationToken());
} // targetFile already found.
if (session == null) {
UserAccount user = m_userService.getUserAccount(client.getCustomerId(), client.getUserId());
session = client.createSession(user);
// What if the BB and OE create a session at the same time?
// This ensures a unique filename.
// The client who does the last renameTo() below wins the race
// and that becomes the common session file.
tmpName = targetFile.getAbsolutePath() + "_tmp_" + clientType;
File tmpFile = new File(tmpName);
session.write(tmpFile);
// If 'targetFile' already exists it'll get clobbered.
// Makes the session targetFile generation atomic.
boolean ok = FileUtils.clobberingRename(tmpFile, targetFile);
if (!ok) {
throw new IOException("Rename failed");
}
} // need to create session.
} catch (Exception ex) {
if (ex instanceof ClientServiceException) {
// We already logged it.
throw (ClientServiceException) ex;
}
LogMessageGen lmg = new LogMessageGen();
lmg.setSubject("Unable to generate session file.");
lmg.param(LoggingConsts.USER_ID, client.getUserId());
lmg.param(LoggingConsts.TEMP_NAME, tmpName);
lmg.param(LoggingConsts.FILENAME, targetName);
m_logCategory.error(lmg.toString(), ex);
throw new ClientServiceException("");
}
return session;
}
