/** * Launches a new CM Synergy command line session * * @param ccmExe The CM Synergy command line executable * @param session The session information * @return stdout from new session. */ private static String startSession(final String ccmExe, final CMSynergySession session) { LOG.info("Starting a new CM Synergy session for \"" + session.getName() + "\"."); // Create CM Synergy startup command final ManagedCommandline cmd = new ManagedCommandline(ccmExe); cmd.createArgument("start"); cmd.createArgument("-q"); cmd.createArgument("-nogui"); cmd.createArgument("-m"); cmd.createArguments("-d", session.getDatabase()); cmd.createArguments("-r", session.getRole()); cmd.createArguments("-n", session.getUser()); cmd.createArguments("-pw", session.getPassword()); if (session.getHost() != null) { cmd.createArguments("-h", session.getHost()); } if (session.isRemoteClient()) { LOG.debug("Connecting in remote-client mode"); cmd.createArgument("-rc"); } else { LOG.debug("Connecting in local mode"); } try { cmd.execute(); cmd.assertExitCode(0); } catch (Exception e) { LOG.error("Could not start a CM Synergy session for " + session.getName(), e); return null; } return cmd.getStdoutAsString().trim(); }
/** * Checks that all named sessions given to the listener are still running (and accessible). If * they are not, new sessions are started as needed. This method is synchronized to prevent * multiple threads from each starting their own CM Synergy sessions. * * @param ccmExe The CM Synergy command line executable * @param sessionFile The CM Synergy session map file * @param sessions A list of monitored CM Synergy sessions * @throws CruiseControlException if something breaks */ private static synchronized void checkSessions( final String ccmExe, final File sessionFile, final List<CMSynergySession> sessions) throws CruiseControlException { LOG.debug("Using persisted data from " + sessionFile.getAbsolutePath()); // Load the persisted session information from file final Properties sessionMap; try { sessionMap = Util.loadPropertiesFromFile(sessionFile); } catch (IOException e) { throw new CruiseControlException(e); } // Get a list of currently running CM Synergy sessions final ManagedCommandline cmd = new ManagedCommandline(ccmExe); cmd.createArgument("status"); String availableSessions; try { cmd.execute(); cmd.assertExitCode(0); availableSessions = cmd.getStdoutAsString(); } catch (Exception e) { LOG.warn("CM Synergy failed to provide a list of valid sessions.", e); availableSessions = ""; } // Check each monitored session in turn for (final CMSynergySession session : sessions) { final String name = session.getName(); final String id = sessionMap.getProperty(name); LOG.info("Checking " + name + "."); if (id == null || availableSessions.indexOf(id) < 0) { // Start a new session and record the ID in the map final String newID = startSession(ccmExe, session); if (newID != null) { LOG.info("Started CM Synergy session \"" + newID + "\"."); sessionMap.setProperty(name, newID); } } else { LOG.info("Using existing session \"" + id + "\"."); } } // Update the persisted session information try { Util.storePropertiesToFile(sessionMap, "CM Synergy session map", sessionFile); } catch (IOException e) { throw new CruiseControlException(e); } }