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## org.apache.catalina.cluster.tcp
Class SimpleTcpCluster

    java.lang.Object
      org.apache.catalina.cluster.tcp.SimpleTcpCluster

All Implemented Interfaces:
  CatalinaCluster, Cluster, IDynamicProperty, Lifecycle, LifecycleListener, MembershipListener

public class SimpleTcpCluster
extends java.lang.Object
implements CatalinaCluster, Lifecycle, MembershipListener, LifecycleListener, IDynamicProperty

A Cluster implementation using simple multicast. Responsible for setting up a cluster and provides callers with a valid multicast receiver/sender. FIXME remove install/remove/start/stop context dummys FIXME wrote testcases

Version:
  $Revision: 522314 $, $Date: 2007-03-25 19:46:37 +0200 (Sun, 25 Mar 2007) $
Author:
  Filip Hanik, Remy Maucherat, Peter Rossbach

Field Summary
`static java.lang.String` | `AFTER_MANAGERREGISTER_EVENT`
`static java.lang.String` | `AFTER_MANAGERUNREGISTER_EVENT`
`static java.lang.String` | `AFTER_MEMBERREGISTER_EVENT`
`static java.lang.String` | `AFTER_MEMBERUNREGISTER_EVENT`
`static java.lang.String` | `BEFORE_MANAGERREGISTER_EVENT`
`static java.lang.String` | `BEFORE_MANAGERUNREGISTER_EVENT`
`static java.lang.String` | `BEFORE_MEMBERREGISTER_EVENT`
`static java.lang.String` | `BEFORE_MEMBERUNREGISTER_EVENT`
`protected java.lang.String` | `clusterImpName` Name for logging purpose
`protected java.util.List` | `clusterListeners` Listeners of messages
`protected java.lang.String` | `clusterName` The cluster name to join
`protected Container` | `container` The Container associated with this Cluster.
`protected static java.lang.String` | `info` Descriptive information about this component implementation.
`protected LifecycleSupport` | `lifecycle` The lifecycle event support for this component.
`static org.apache.commons.logging.Log` | `log`
`protected java.util.Map` | `managers` The context name <->manager association for distributed contexts.
`protected MembershipService` | `membershipService` the service that provides the membership
`static java.lang.String` | `RECEIVE_MESSAGE_FAILURE_EVENT`
`static java.lang.String` | `SEND_MESSAGE_FAILURE_EVENT`
`protected StringManager` | `sm` The string manager for this package.
`protected boolean` | `started` Has this component been started?
`protected java.beans.PropertyChangeSupport` | `support` The property change support for this component.

Fields inherited from interface org.apache.catalina.Lifecycle
`AFTER_START_EVENT, AFTER_STOP_EVENT, BEFORE_START_EVENT, BEFORE_STOP_EVENT, DESTROY_EVENT, INIT_EVENT, PERIODIC_EVENT, START_EVENT, STOP_EVENT`

Constructor Summary
`SimpleTcpCluster()`

Method Summary
`void` | `addClusterListener(MessageListener listener)` add cluster message listener and register cluster to this listener
`void` | `addLifecycleListener(LifecycleListener listener)` Add a lifecycle event listener to this component.
`void` | `addManager(java.lang.String name, Manager manager)` add an application to cluster replication bus
`void` | `addValve(Valve valve)` Add cluster valve Cluster Valves are only add to container when cluster is started!
`void` | `backgroundProcess()` Execute a periodic task, such as reloading, etc.
`protected void` | `createDefaultClusterListener()` Create default session cluster listener: <ClusterListener className="org.apache.catalina.cluster.session.ClusterSessionListener" />
`protected void` | `createDefaultClusterReceiver()` Create default receiver: <Receiver className="org.apache.catalina.cluster.tcp.SocketReplicationListener" tcpListenAddress="auto" tcpListenPort="8015" tcpListenMaxPort="8019" doReceivedProcessingStats="true" />
`protected void` | `createDefaultClusterSender()` Create default cluster sender <Sender className="org.apache.catalina.cluster.tcp.ReplicationTransmitter" replicationMode="fastasyncqueue" doTransmitterProcessingStats="true" doProcessingStats="true"/>
`protected void` | `createDefaultClusterValves()` Create default ReplicationValve <Valve className="org.apache.catalina.cluster.tcp.ReplicationValve" filter=".*\.gif;.*\.js;.*\.css;.*\.png;.*\.jpeg;.*\.jpg;.*\.htm;.*\.html;.*\.txt;" primaryIndicator="true" />
`protected void` | `createDefaultMembershipService()` Create default membership service: <Membership className="org.apache.catalina.cluster.mcast.McastService" mcastAddr="228.0.0.4" mcastPort="8012" mcastFrequency="1000" mcastDropTime="30000"/>
`Manager` | `createManager(java.lang.String name)` Create new Manager without add to cluster (comes with start the manager)
`MessageListener[]` | `findClusterListeners()` Get the cluster listeners associated with this cluster.
`LifecycleListener[]` | `findLifecycleListeners()` Get the lifecycle listeners associated with this lifecycle.
`ClusterDeployer` | `getClusterDeployer()` get current Deployer
`org.apache.commons.logging.Log` | `getClusterLog()`
`java.lang.String` | `getClusterLogName()`
`java.lang.String` | `getClusterName()` Return the name of the cluster that this Server is currently configured to operate within.
`ClusterReceiver` | `getClusterReceiver()`
`ClusterSender` | `getClusterSender()`
`Container` | `getContainer()` Get the Container associated with our Cluster
`java.lang.String` | `getInfo()` Return descriptive information about this Cluster implementation and the corresponding version number, in the format `<description>/<version>`.
`Member` | `getLocalMember()` Return the member that represents this node.
`org.apache.commons.logging.Log` | `getLogger()` Returns the associates logger with this cluster.
`javax.management.modelmbean.ModelMBean` | `getManagedBean(java.lang.Object object)` Returns the ModelMBean
`Manager` | `getManager(java.lang.String name)`
`java.lang.String` | `getManagerClassName()`
`java.lang.String` | `getManagerName(java.lang.String name, Manager manager)` Returns the name for the cluster manager.
`java.util.Map` | `getManagers()`
`javax.management.MBeanServer` | `getMBeanServer()` Get current Catalina MBean Server and load mbean registry
`Member[]` | `getMembers()` Get all current cluster members
`MembershipService` | `getMembershipService()`
`javax.management.ObjectName` | `getObjectName()`
`java.lang.Object` | `getProperty(java.lang.String key)` get current config
`java.util.Iterator` | `getPropertyNames()` Get all properties keys
`java.lang.String` | `getProtocol()` Get the protocol used by the cluster.
`Valve[]` | `getValves()` get all cluster valves
`boolean` | `hasMembers()` has members
`void` | `installContext(java.lang.String contextPath, java.net.URL war)` Install a new web application, whose web application archive is at the specified URL, into this container with the specified context path.
`boolean` | `isDefaultMode()`
`boolean` | `isDoClusterLog()`
`boolean` | `isNotifyLifecycleListenerOnFailure()`
`void` | `lifecycleEvent(LifecycleEvent lifecycleEvent)` Use as base to handle start/stop/periodic Events from host.
`protected void` | `logReceiveMessage(ClusterMessage message, long start, boolean accepted)` log received message to cluster transfer log
`protected void` | `logSendMessage(ClusterMessage message, long start, Member dest)` log sended message to cluster transfer log
`void` | `memberAdded(Member member)` New cluster member is registered
`void` | `memberDisappeared(Member member)` Cluster member is gone
`void` | `receive(ClusterMessage message)` notify all listeners from receiving a new message is not ClusterMessage emitt Failure Event to LifecylceListener
`protected void` | `registerClusterValve()` register all cluster valve to host or engine
`protected void` | `registerMBeans()` register Means at cluster.
`void` | `removeClusterListener(MessageListener listener)` remove message listener and deregister Cluster from listener
`void` | `removeLifecycleListener(LifecycleListener listener)` Remove a lifecycle event listener from this component.
`void` | `removeManager(java.lang.String name, Manager manager)` remove an application form cluster replication bus
`void` | `removeProperty(java.lang.String key)` remove a configured property.
`void` | `send(ClusterMessage msg)` send message to all cluster members
`void` | `send(ClusterMessage msg, Member dest)` send a cluster message to one member
`void` | `sendClusterDomain(ClusterMessage msg)` send message to all cluster members same cluster domain
`void` | `sendToMember(ClusterMessage msg, java.lang.String dest)` send a cluster message to one member (very usefull JMX method for remote scripting)
`void` | `setClusterDeployer(ClusterDeployer clusterDeployer)` set a new Deployer, must be set before cluster started!
`void` | `setClusterLogName(java.lang.String clusterLogName)`
`void` | `setClusterName(java.lang.String clusterName)` Set the name of the cluster to join, if no cluster with this name is present create one.
`void` | `setClusterReceiver(ClusterReceiver clusterReceiver)`
`void` | `setClusterSender(ClusterSender clusterSender)`
`void` | `setContainer(Container container)` Set the Container associated with our Cluster
`void` | `setDefaultMode(boolean defaultMode)`
`void` | `setDoClusterLog(boolean doClusterLog)`
`void` | `setManagerClassName(java.lang.String managerClassName)`
`void` | `setMembershipService(MembershipService membershipService)`
`void` | `setNotifyLifecycleListenerOnFailure(boolean notifyListenerOnFailure)`
`void` | `setObjectName(javax.management.ObjectName name)`
`void` | `setProperty(java.lang.String name, java.lang.Object value)` set config attributes with reflect and propagate to all managers
`void` | `setProperty(java.lang.String name, java.lang.String value)` JMX hack to direct use at jconsole
`void` | `setProtocol(java.lang.String protocol)` Set the protocol parameters.
`void` | `start()` Prepare for the beginning of active use of the public methods of this component.
`void` | `startContext(java.lang.String contextPath)` Start an existing web application, attached to the specified context path in all the other nodes in the cluster.
`void` | `stop()` Gracefully terminate the active cluster component.
`void` | `stop(java.lang.String contextPath)` Stop an existing web application, attached to the specified context path.
`protected void` | `transferProperty(java.lang.String prefix, java.lang.Object bean)` transfer properties from cluster configuration to subelement bean.
`protected void` | `unregisterClusterValve()` unregister all cluster valve to host or engine
`protected void` | `unregisterMBeans()`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### log

    public static org.apache.commons.logging.Log log

### info

    protected static final java.lang.String info

  Descriptive information about this component implementation.

  See Also:
    Constant Field Values

### BEFORE_MEMBERREGISTER_EVENT

    public static final java.lang.String BEFORE_MEMBERREGISTER_EVENT

See Also:
  Constant Field Values

### AFTER_MEMBERREGISTER_EVENT

    public static final java.lang.String AFTER_MEMBERREGISTER_EVENT

See Also:
  Constant Field Values

### BEFORE_MANAGERREGISTER_EVENT

    public static final java.lang.String BEFORE_MANAGERREGISTER_EVENT

See Also:
  Constant Field Values

### AFTER_MANAGERREGISTER_EVENT

    public static final java.lang.String AFTER_MANAGERREGISTER_EVENT

See Also:
  Constant Field Values

### BEFORE_MANAGERUNREGISTER_EVENT

    public static final java.lang.String BEFORE_MANAGERUNREGISTER_EVENT

See Also:
  Constant Field Values

### AFTER_MANAGERUNREGISTER_EVENT

    public static final java.lang.String AFTER_MANAGERUNREGISTER_EVENT

See Also:
  Constant Field Values

### BEFORE_MEMBERUNREGISTER_EVENT

    public static final java.lang.String BEFORE_MEMBERUNREGISTER_EVENT

See Also:
  Constant Field Values

### AFTER_MEMBERUNREGISTER_EVENT

    public static final java.lang.String AFTER_MEMBERUNREGISTER_EVENT

See Also:
  Constant Field Values

### SEND_MESSAGE_FAILURE_EVENT

    public static final java.lang.String SEND_MESSAGE_FAILURE_EVENT

See Also:
  Constant Field Values

### RECEIVE_MESSAGE_FAILURE_EVENT

    public static final java.lang.String RECEIVE_MESSAGE_FAILURE_EVENT

See Also:
  Constant Field Values

### membershipService

    protected MembershipService membershipService

  the service that provides the membership

### clusterImpName

    protected java.lang.String clusterImpName

  Name for logging purpose

### sm

    protected StringManager sm

  The string manager for this package.

### clusterName

    protected java.lang.String clusterName

  The cluster name to join

### container

    protected Container container

  The Container associated with this Cluster.

### lifecycle

    protected LifecycleSupport lifecycle

  The lifecycle event support for this component.

### started

    protected boolean started

  Has this component been started?

### support

    protected java.beans.PropertyChangeSupport support

  The property change support for this component.

### managers

    protected java.util.Map managers

  The context name <->manager association for distributed contexts.

### clusterListeners

    protected java.util.List clusterListeners

  Listeners of messages

Constructor Detail

### SimpleTcpCluster

    public SimpleTcpCluster()

Method Detail

### getInfo

    public java.lang.String getInfo()

  Return descriptive information about this Cluster implementation and the corresponding version number, in the format `<description>/<version>`.

  Specified by:
    `getInfo` in interface `Cluster`

### setClusterName

    public void setClusterName(java.lang.String clusterName)

  Set the name of the cluster to join, if no cluster with this name is present create one.

  Specified by:
    `setClusterName` in interface `Cluster`
  Parameters:
    `clusterName` - The clustername to join

### getClusterName

    public java.lang.String getClusterName()

  Return the name of the cluster that this Server is currently configured to operate within.

  Specified by:
    `getClusterName` in interface `Cluster`
  Returns:
    The name of the cluster associated with this server

### setContainer

    public void setContainer(Container container)

  Set the Container associated with our Cluster

  Specified by:
    `setContainer` in interface `Cluster`
  Parameters:
    `container` - The Container to use

### getContainer

    public Container getContainer()

  Get the Container associated with our Cluster

  Specified by:
    `getContainer` in interface `Cluster`
  Returns:
    The Container associated with our Cluster

### isNotifyLifecycleListenerOnFailure

    public boolean isNotifyLifecycleListenerOnFailure()

  Returns:
    Returns the notifyLifecycleListenerOnFailure.

### setNotifyLifecycleListenerOnFailure

    public void setNotifyLifecycleListenerOnFailure(boolean notifyListenerOnFailure)

  Parameters:
    `notifyListenerOnFailure` - The notifyLifecycleListenerOnFailure to set.

### isDefaultMode

    public boolean isDefaultMode()

  Returns:
    Returns the defaultMode.

### setDefaultMode

    public void setDefaultMode(boolean defaultMode)

  Parameters:
    `defaultMode` - The defaultMode to set.

### getManagerClassName

    public java.lang.String getManagerClassName()

### setManagerClassName

    public void setManagerClassName(java.lang.String managerClassName)

### getClusterSender

    public ClusterSender getClusterSender()

  Specified by:
    `getClusterSender` in interface `CatalinaCluster`

### setClusterSender

    public void setClusterSender(ClusterSender clusterSender)

  Specified by:
    `setClusterSender` in interface `CatalinaCluster`

### getClusterReceiver

    public ClusterReceiver getClusterReceiver()

  Specified by:
    `getClusterReceiver` in interface `CatalinaCluster`

### setClusterReceiver

    public void setClusterReceiver(ClusterReceiver clusterReceiver)

  Specified by:
    `setClusterReceiver` in interface `CatalinaCluster`

### getMembershipService

    public MembershipService getMembershipService()

  Specified by:
    `getMembershipService` in interface `CatalinaCluster`

### setMembershipService

    public void setMembershipService(MembershipService membershipService)

  Specified by:
    `setMembershipService` in interface `CatalinaCluster`

### addValve

    public void addValve(Valve valve)

  Add cluster valve Cluster Valves are only add to container when cluster is started!

  Specified by:
    `addValve` in interface `CatalinaCluster`
  Parameters:
    `valve` - The new cluster Valve.

### getValves

    public Valve[] getValves()

  get all cluster valves

  Specified by:
    `getValves` in interface `CatalinaCluster`
  Returns:
    current cluster valves

### findClusterListeners

    public MessageListener[] findClusterListeners()

  Get the cluster listeners associated with this cluster. If this Array has no listeners registered, a zero-length array is returned.

### addClusterListener

    public void addClusterListener(MessageListener listener)

  add cluster message listener and register cluster to this listener

  Specified by:
    `addClusterListener` in interface `CatalinaCluster`
  See Also:
    `CatalinaCluster.addClusterListener(org.apache.catalina.cluster.MessageListener)`

### removeClusterListener

    public void removeClusterListener(MessageListener listener)

  remove message listener and deregister Cluster from listener

  Specified by:
    `removeClusterListener` in interface `CatalinaCluster`
  See Also:
    `CatalinaCluster.removeClusterListener(org.apache.catalina.cluster.MessageListener)`

### getClusterDeployer

    public ClusterDeployer getClusterDeployer()

  get current Deployer

  Specified by:
    `getClusterDeployer` in interface `CatalinaCluster`

### setClusterDeployer

    public void setClusterDeployer(ClusterDeployer clusterDeployer)

  set a new Deployer, must be set before cluster started!

  Specified by:
    `setClusterDeployer` in interface `CatalinaCluster`

### hasMembers

    public boolean hasMembers()

  has members

  Specified by:
    `hasMembers` in interface `CatalinaCluster`

### getMembers

    public Member[] getMembers()

  Get all current cluster members

  Specified by:
    `getMembers` in interface `CatalinaCluster`
  Returns:
    all members or empty array

### getLocalMember

    public Member getLocalMember()

  Return the member that represents this node.

  Specified by:
    `getLocalMember` in interface `CatalinaCluster`
  Returns:
    Member

### setProperty

    public void setProperty(java.lang.String name,
                            java.lang.String value)

  JMX hack to direct use at jconsole

  Parameters:
    `name` -
    `value` -

### setProperty

    public void setProperty(java.lang.String name,
                            java.lang.Object value)

  set config attributes with reflect and propagate to all managers

  Specified by:
    `setProperty` in interface `IDynamicProperty`
  Parameters:
    `name` -
    `value` -

### getProperty

    public java.lang.Object getProperty(java.lang.String key)

  get current config

  Specified by:
    `getProperty` in interface `IDynamicProperty`
  Parameters:
    `key` -
  Returns:
    The property

### getPropertyNames

    public java.util.Iterator getPropertyNames()

  Get all properties keys

  Specified by:
    `getPropertyNames` in interface `IDynamicProperty`
  Returns:
    An iterator over the property names.

### removeProperty

    public void removeProperty(java.lang.String key)

  remove a configured property.

  Specified by:
    `removeProperty` in interface `IDynamicProperty`
  Parameters:
    `key` -

### transferProperty

    protected void transferProperty(java.lang.String prefix,
                                    java.lang.Object bean)

  transfer properties from cluster configuration to subelement bean.

  Parameters:
    `prefix` -
    `bean` -

### getManagers

    public java.util.Map getManagers()

  Specified by:
    `getManagers` in interface `CatalinaCluster`
  Returns:
    Returns the managers.

### createManager

    public Manager createManager(java.lang.String name)

  Create new Manager without add to cluster (comes with start the manager)

  Specified by:
    `createManager` in interface `Cluster`
  Parameters:
    `name` - Context Name of this manager
  See Also:
    `Cluster.createManager(java.lang.String)`, `addManager(String, Manager)`, `DeltaManager.start()`

### removeManager

    public void removeManager(java.lang.String name,
                              Manager manager)

  remove an application form cluster replication bus

  Specified by:
    `removeManager` in interface `CatalinaCluster`
  See Also:
    `CatalinaCluster.removeManager(java.lang.String,Manager)`

### addManager

    public void addManager(java.lang.String name,
                           Manager manager)

  add an application to cluster replication bus

  Specified by:
    `addManager` in interface `CatalinaCluster`
  Parameters:
    `name` - of the context
    `manager` - manager to register
  See Also:
    `CatalinaCluster.addManager(java.lang.String, org.apache.catalina.Manager)`

### getManagerName

    public java.lang.String getManagerName(java.lang.String name,
                                           Manager manager)

  Returns the name for the cluster manager. This name depends on whether the cluster manager is defined inside a Host or an Engine. Should the cluster be defined in the Engine element, the manager name is Host.getName+"#"+Context.getManager().getName() otherwise the name is simply Context.getManager().getName()

  Parameters:
    `name` - The current name
    `manager` - The cluster manager implementation
  Returns:
    The name to use for the cluster manager

### getManager

    public Manager getManager(java.lang.String name)

  Specified by:
    `getManager` in interface `CatalinaCluster`

### backgroundProcess

    public void backgroundProcess()

  Execute a periodic task, such as reloading, etc. This method will be invoked inside the classloading context of this container. Unexpected throwables will be caught and logged.

  Specified by:
    `backgroundProcess` in interface `Cluster`
  See Also:
    `FarmWarDeployer.backgroundProcess()`, `ReplicationTransmitter.backgroundProcess()`

### addLifecycleListener

    public void addLifecycleListener(LifecycleListener listener)

  Add a lifecycle event listener to this component.

  Specified by:
    `addLifecycleListener` in interface `Lifecycle`
  Parameters:
    `listener` - The listener to add

### findLifecycleListeners

    public LifecycleListener[] findLifecycleListeners()

  Get the lifecycle listeners associated with this lifecycle. If this Lifecycle has no listeners registered, a zero-length array is returned.

  Specified by:
    `findLifecycleListeners` in interface `Lifecycle`

### removeLifecycleListener

    public void removeLifecycleListener(LifecycleListener listener)

  Remove a lifecycle event listener from this component.

  Specified by:
    `removeLifecycleListener` in interface `Lifecycle`
  Parameters:
    `listener` - The listener to remove

### lifecycleEvent

    public void lifecycleEvent(LifecycleEvent lifecycleEvent)

  Use as base to handle start/stop/periodic Events from host. Currently only log the messages as trace level.

  Specified by:
    `lifecycleEvent` in interface `LifecycleListener`
  Parameters:
    `lifecycleEvent` - LifecycleEvent that has occurred
  See Also:
    `LifecycleListener.lifecycleEvent(org.apache.catalina.LifecycleEvent)`

### start

    public void start()
               throws LifecycleException

  Prepare for the beginning of active use of the public methods of this component. This method should be called after `configure()`, and before any of the public methods of the component are utilized.
  Starts the cluster communication channel, this will connect with the other nodes in the cluster, and request the current session state to be transferred to this node.

  Specified by:
    `start` in interface `CatalinaCluster`
  Throws:
    `java.lang.IllegalStateException` - if this component has already been started
    `LifecycleException` - if this component detects a fatal error that prevents this component from being used

### createDefaultMembershipService

    protected void createDefaultMembershipService()

  Create default membership service:

       <Membership
                   className="org.apache.catalina.cluster.mcast.McastService"
                   mcastAddr="228.0.0.4"
                   mcastPort="8012"
                   mcastFrequency="1000"
                   mcastDropTime="30000"/>

### createDefaultClusterSender

    protected void createDefaultClusterSender()

  Create default cluster sender

        <Sender
           className="org.apache.catalina.cluster.tcp.ReplicationTransmitter"
           replicationMode="fastasyncqueue"
           doTransmitterProcessingStats="true"
           doProcessingStats="true"/>

### createDefaultClusterReceiver

    protected void createDefaultClusterReceiver()

  Create default receiver:

         <Receiver
           className="org.apache.catalina.cluster.tcp.SocketReplicationListener"
           tcpListenAddress="auto"
           tcpListenPort="8015"
           tcpListenMaxPort="8019"
           doReceivedProcessingStats="true"
         />

### createDefaultClusterListener

    protected void createDefaultClusterListener()

  Create default session cluster listener:

       <ClusterListener
         className="org.apache.catalina.cluster.session.ClusterSessionListener" />

### createDefaultClusterValves

    protected void createDefaultClusterValves()

  Create default ReplicationValve

       <Valve
          className="org.apache.catalina.cluster.tcp.ReplicationValve"
          filter=".*\.gif;.*\.js;.*\.css;.*\.png;.*\.jpeg;.*\.jpg;.*\.htm;.*\.html;.*\.txt;"
          primaryIndicator="true" />

### registerClusterValve

    protected void registerClusterValve()
                                 throws java.lang.Exception

  register all cluster valve to host or engine

  Throws:
    `java.lang.Exception`
    `java.lang.ClassNotFoundException`

### unregisterClusterValve

    protected void unregisterClusterValve()
                                   throws java.lang.Exception

  unregister all cluster valve to host or engine

  Throws:
    `java.lang.Exception`
    `java.lang.ClassNotFoundException`

### stop

    public void stop()
              throws LifecycleException

  Gracefully terminate the active cluster component.
  This will disconnect the cluster communication channel, stop the listener and deregister the valves from host or engine.
  Note:
  The sub elements receiver, sender, membership, listener or valves are not removed. You can easily start the cluster again.

  Specified by:
    `stop` in interface `CatalinaCluster`
  Throws:
    `java.lang.IllegalStateException` - if this component has not been started
    `LifecycleException` - if this component detects a fatal error that needs to be reported

### sendClusterDomain

    public void sendClusterDomain(ClusterMessage msg)

  send message to all cluster members same cluster domain

  Specified by:
    `sendClusterDomain` in interface `CatalinaCluster`
  Parameters:
    `msg` - ClusterMessage
  See Also:
    `CatalinaCluster.send(org.apache.catalina.cluster.ClusterMessage)`

### send

    public void send(ClusterMessage msg)

  send message to all cluster members

  Specified by:
    `send` in interface `CatalinaCluster`
  Parameters:
    `msg` - message to transfer
  See Also:
    `CatalinaCluster.send(org.apache.catalina.cluster.ClusterMessage)`

### sendToMember

    public void sendToMember(ClusterMessage msg,
                             java.lang.String dest)

  send a cluster message to one member (very usefull JMX method for remote scripting)

  Parameters:
    `msg` - message to transfer
    `dest` - Receiver member with name
  See Also:
    `CatalinaCluster.send(org.apache.catalina.cluster.ClusterMessage, org.apache.catalina.cluster.Member)`, `McastService.findMemberByName(String)`

### send

    public void send(ClusterMessage msg,
                     Member dest)

  send a cluster message to one member

  Specified by:
    `send` in interface `CatalinaCluster`
  Parameters:
    `msg` - message to transfer
    `dest` - Receiver member
  See Also:
    `CatalinaCluster.send(org.apache.catalina.cluster.ClusterMessage, org.apache.catalina.cluster.Member)`

### memberAdded

    public void memberAdded(Member member)

  New cluster member is registered

  Specified by:
    `memberAdded` in interface `MembershipListener`
  See Also:
    `MembershipListener.memberAdded(org.apache.catalina.cluster.Member)`

### memberDisappeared

    public void memberDisappeared(Member member)

  Cluster member is gone

  Specified by:
    `memberDisappeared` in interface `MembershipListener`
  See Also:
    `MembershipListener.memberDisappeared(org.apache.catalina.cluster.Member)`

### receive

    public void receive(ClusterMessage message)

  notify all listeners from receiving a new message is not ClusterMessage emitt Failure Event to LifecylceListener

  Specified by:
    `receive` in interface `CatalinaCluster`
  Parameters:
    `message` - receveived Message

### getClusterLogName

    public java.lang.String getClusterLogName()

  Returns:
    Returns the clusterLogName.

### setClusterLogName

    public void setClusterLogName(java.lang.String clusterLogName)

  Parameters:
    `clusterLogName` - The clusterLogName to set.

### isDoClusterLog

    public boolean isDoClusterLog()

  Returns:
    Returns the doClusterLog.

### setDoClusterLog

    public void setDoClusterLog(boolean doClusterLog)

  Parameters:
    `doClusterLog` - The doClusterLog to set.

### getLogger

    public org.apache.commons.logging.Log getLogger()

  Description copied from interface: `CatalinaCluster`
  Returns the associates logger with this cluster.

  Specified by:
    `getLogger` in interface `CatalinaCluster`
  Returns:
    Log

### getClusterLog

    public org.apache.commons.logging.Log getClusterLog()

### logReceiveMessage

    protected void logReceiveMessage(ClusterMessage message,
                                     long start,
                                     boolean accepted)

  log received message to cluster transfer log

  Parameters:
    `message` -
    `start` -
    `accepted` -

### logSendMessage

    protected void logSendMessage(ClusterMessage message,
                                  long start,
                                  Member dest)

  log sended message to cluster transfer log

  Parameters:
    `message` -
    `start` -
    `dest` -

### registerMBeans

    protected void registerMBeans()

  register Means at cluster.

### unregisterMBeans

    protected void unregisterMBeans()

### getMBeanServer

    public javax.management.MBeanServer getMBeanServer()
                                                throws java.lang.Exception

  Get current Catalina MBean Server and load mbean registry

  Returns:
    The server
  Throws:
    `java.lang.Exception`

### getManagedBean

    public javax.management.modelmbean.ModelMBean getManagedBean(java.lang.Object object)
                                                          throws java.lang.Exception

  Returns the ModelMBean

  Parameters:
    `object` - The Object to get the ModelMBean for
  Returns:
    The ModelMBean
  Throws:
    `java.lang.Exception` - If an error occurs this constructors throws this exception

### setObjectName

    public void setObjectName(javax.management.ObjectName name)

### getObjectName

    public javax.management.ObjectName getObjectName()

### setProtocol

    public void setProtocol(java.lang.String protocol)

  Description copied from interface: `Cluster`
  Set the protocol parameters.

  Specified by:
    `setProtocol` in interface `Cluster`
  Parameters:
    `protocol` - The protocol used by the cluster
  See Also:
    `Cluster.setProtocol(java.lang.String)`

### getProtocol

    public java.lang.String getProtocol()

  Description copied from interface: `Cluster`
  Get the protocol used by the cluster.

  Specified by:
    `getProtocol` in interface `Cluster`
  Returns:
    The protocol
  See Also:
    `Cluster.getProtocol()`

### startContext

    public void startContext(java.lang.String contextPath)
                      throws java.io.IOException

  Description copied from interface: `Cluster`
  Start an existing web application, attached to the specified context path in all the other nodes in the cluster. Only starts a web application if it is not running.

  Specified by:
    `startContext` in interface `Cluster`
  Parameters:
    `contextPath` - The context path of the application to be started
  Throws:
    `java.io.IOException` - if an input/output error occurs during startup
  See Also:
    `Cluster.startContext(java.lang.String)`

### installContext

    public void installContext(java.lang.String contextPath,
                               java.net.URL war)

  Description copied from interface: `Cluster`
  Install a new web application, whose web application archive is at the specified URL, into this container with the specified context path. A context path of "" (the empty string) should be used for the root application for this container. Otherwise, the context path must start with a slash.

  If this application is successfully installed, a ContainerEvent of type `PRE_INSTALL_EVENT` will be sent to registered listeners before the associated Context is started, and a ContainerEvent of type `INSTALL_EVENT` will be sent to all registered listeners after the associated Context is started, with the newly created `Context` as an argument.

  Specified by:
    `installContext` in interface `Cluster`
  Parameters:
    `contextPath` - The context path to which this application should be installed (must be unique)
    `war` - A URL of type "jar:" that points to a WAR file, or type "file:" that points to an unpacked directory structure containing the web application to be installed
  See Also:
    `Cluster.installContext(java.lang.String, java.net.URL)`

### stop

    public void stop(java.lang.String contextPath)
              throws java.io.IOException

  Description copied from interface: `Cluster`
  Stop an existing web application, attached to the specified context path. Only stops a web application if it is running.

  Specified by:
    `stop` in interface `Cluster`
  Parameters:
    `contextPath` - The context path of the application to be stopped
  Throws:
    `java.io.IOException` - if an input/output error occurs while stopping the web application
  See Also:
    `Cluster.stop(java.lang.String)`

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