Examples of com.sun.messaging.jmq.jmsserver.cluster.BrokerState

Package com.sun.messaging.jmq.jmsserver.cluster

Examples of com.sun.messaging.jmq.jmsserver.cluster.BrokerState

com.sun.messaging.jmq.jmsserver.cluster.BrokerState

This class is a type-safe enum which contains the valid lifecycle states for a broker. It is used by ClusterConfig to set the state of the broker. State is stored as an int in JDBC and used as a typesafe enum within the code.

The states are as follows:

State	Description	Behavior
INITIALIZING	a new broker is starting	set by ClusterConfig.addBroker()
OPERATING	The broker is processing messages	set by Broker at startup
QUIESCE_STARTED	The broker has started to quiesce, this means that new jms connections will not longer be accepted	called by BrokerStateHandler.quiesce()
QUIESCE_COMPLETED	Quiesce has completed, this means that all jms connections have exited, the broker can not be safely shutdown.	called by BrokerStateHandler.quiesce()
SHUTDOWN_STARTED	The broker is starting to shutdown. It may shutdown immediately or wait some period of time	set by BrokerStateHandler.shutdown()
SHUTDOWN_FAILOVER	the broker has finished shutting down, all resources have been released it should be taken over (the broker may or may not shutdown, depending on whether it is running inprocess)	set by BrokerStateHandler.shutdown()
SHUTDOWN_COMPLETE	the broker has finished shutting down, all resources have been released but is should NOT be taken over (the broker may or may not shutdown, depending on whether it is running inprocess)	set by BrokerStateHandler.shutdown()
FAILOVER_PENDING	a takeover is pending (not stored to disk)	set by the TakeoverThread of HAMonitorService()
FAILOVER_STARTED	another broker in the cluster has started to takeover the state of this broker (the broker handling takeover can be retrieved with HAClusteredBroker.getTakeoverBroker()	set by the TakeoverThread of HAMonitorService()
FAILOVER_COMPLETE	takeover of a broker has completed	set by the TakeoverThread of HAMonitorService()
FAILOVER_FAILED	a takeover failed (not stored to disk)	set by the TakeoverThread of HAMonitorService()

NOTE:

in the non-ha case, states remain in memory
for HA, states are stored to the database

XXX-TBD: should we store a string or letter not an int in jdbc for readability.

            DBManager.lockTables(conn, true); // true = lock


            try {
                DAOFactory daoFactory = dbmgr.getDAOFactory();
                BrokerDAO brokerDAO = daoFactory.getBrokerDAO();
                BrokerState state = brokerDAO.getState(conn, brokerID);
                if ( !state.isActiveState() ) {
                    try {
                        // Remove broker's and its data
                        conn.setAutoCommit(false); // do this in 1 txn
                        daoFactory.getConsumerStateDAO().deleteAll(conn);
                        daoFactory.getMessageDAO().deleteAll(conn);

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            DBManager.lockTables(conn, true); // true = lock


            try {
                DAOFactory daoFactory = dbmgr.getDAOFactory();
                BrokerDAO brokerDAO = daoFactory.getBrokerDAO();
                BrokerState state = brokerDAO.getState(conn, brokerID);
                if ( !state.isActiveState() ) {
                    try {
                        conn.setAutoCommit(false); 
                        daoFactory.getJMSBGDAO().delete(conn, bname, null);
                        daoFactory.getTMLogRecordDAOJMSBG().deleteAllByName(conn, bname, null);
                        conn.commit();

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     * @throws BrokerException
     */
    public BrokerState getState( Connection conn, String id )
        throws BrokerException {


        BrokerState state = null;


        boolean myConn = false;
        PreparedStatement pstmt = null;
        ResultSet rs = null;
        Exception myex = null;

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     * @throws BrokerException
     */
    public boolean isBeingTakenOver( Connection conn, String id )
        throws BrokerException {


        BrokerState brokerState = getState( conn, id );
        int state = brokerState.intValue();
        return ( state == BrokerState.I_FAILOVER_PENDING ||
                 state == BrokerState.I_FAILOVER_STARTED ||
                 state == BrokerState.I_FAILOVER_COMPLETE ||
                 state == BrokerState.I_FAILOVER_FAILED );
    }

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Related Classes of com.sun.messaging.jmq.jmsserver.cluster.BrokerState

com.sun.messaging.jmq.jmsserver.persist.jdbc.BrokerDAOImpl

com.sun.messaging.jmq.jmsserver.persist.jdbc.DBTool

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