Examples of org.apache.axis2.clustering.ClusteringAgent

org.apache.axis2.context.ConfigurationContext
afkham.org/2008/05/group-membership-management-schemes.html"> membership scheme, this members are read from the axis2.xml file and added to the ClusteringAgent.

In the axis2.xml, the instance of this interface is specified using the "clustering" class attribute. e.g. <clustering class="org.apache.axis2.clustering.tribes.TribesClusterAgent"> specifies that the TribesClusterAgent class is the instance of this interface that needs to be used.

There can also be several "parameter" elements, which are children of the "clustering" element in the axis2.xml file. Generally, these parameters will be specific to the ClusteringAgent implementation.

     * Initializes the ClusterManager for this ConfigurationContext
     *
     * @throws AxisFault
     */
    public void initCluster() throws AxisFault {
        ClusteringAgent clusteringAgent = axisConfiguration.getClusteringAgent();
        if (clusteringAgent != null) {
            StateManager stateManaget = clusteringAgent.getStateManager();
            if (stateManaget != null) {
                stateManaget.setConfigurationContext(this);
            }
            NodeManager nodeManager = clusteringAgent.getNodeManager();
            if (nodeManager != null) {
                nodeManager.setConfigurationContext(this);
            }
            if (shouldClusterBeInitiated(clusteringAgent)) {
                clusteringAgent.setConfigurationContext(this);
                clusteringAgent.init();
            }
        }
    }

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        if (cc == null) {
            return false;
        }
        // Add the property differences only if Context replication is enabled,
        // and there are members in the cluster
        ClusteringAgent clusteringAgent = cc.getAxisConfiguration().getClusteringAgent();
        if (clusteringAgent == null ||
            clusteringAgent.getStateManager() == null) {
            return false;
        }
        return true;
    }

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        if (configContext == null) {
            configContext = getConfigurationContext();
        }
        if (!started) {


            ClusteringAgent clusteringAgent =
                    configContext.getAxisConfiguration().getClusteringAgent();
            String avoidInit = ClusteringConstants.Parameters.AVOID_INITIATION;
            if (clusteringAgent != null &&
                clusteringAgent.getParameter(avoidInit) != null &&
                ((String) clusteringAgent.getParameter(avoidInit).getValue()).equalsIgnoreCase("true")) {
                clusteringAgent.setConfigurationContext(configContext);
                clusteringAgent.init();
            }


            listenerManager.startSystem(configContext);
            started = true;
        }

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     * Initializes the ClusterManager for this ConfigurationContext
     *
     * @throws AxisFault
     */
    public void initCluster() throws AxisFault {
        ClusteringAgent clusteringAgent = axisConfiguration.getClusteringAgent();
        if (clusteringAgent != null) {
            StateManager stateManaget = clusteringAgent.getStateManager();
            if (stateManaget != null) {
                stateManaget.setConfigurationContext(this);
            }
            NodeManager nodeManager = clusteringAgent.getNodeManager();
            if (nodeManager != null) {
                nodeManager.setConfigurationContext(this);
            }
            if (shouldClusterBeInitiated(clusteringAgent)) {
                clusteringAgent.setConfigurationContext(this);
                clusteringAgent.init();
            }
        }
    }

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            throw new DeploymentException(Messages.getMessage("classAttributeNotFound",
                                                              TAG_CLUSTER));
        }


        String className = classNameAttr.getAttributeValue();
        ClusteringAgent clusteringAgent;
        try {
            Class clazz;
            try {
                clazz = Class.forName(className);
            } catch (ClassNotFoundException e) {
                throw new DeploymentException(Messages.getMessage("clusterImplNotFound",
                                                                  className));
            }
            clusteringAgent = (ClusteringAgent) clazz.newInstance();


            clusteringAgent.setConfigurationContext(configCtx);


            //loading the parameters.
            processParameters(clusterElement.getChildrenWithName(new QName(TAG_PARAMETER)),
                              clusteringAgent,
                              null);

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public class GetStateCommand extends ControlCommand {


    private StateClusteringCommand[] commands;


    public void execute(ConfigurationContext configCtx) throws ClusteringFault {
        ClusteringAgent clusteringAgent = configCtx.getAxisConfiguration().getClusteringAgent();
        if(clusteringAgent == null){
            return;
        }
        StateManager stateManager = clusteringAgent.getStateManager();
        if (stateManager != null) {
            Map excludedPropPatterns = stateManager.getReplicationExcludePatterns();
            List<StateClusteringCommand> cmdList = new ArrayList<StateClusteringCommand>();


            // Add the service group contexts, service contexts & their respective properties

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     * @param abstractContext The context to be subjected to this test
     * @return true - State needs to be replicated
     *         false - otherwise
     */
    private static boolean canReplicate(AbstractContext abstractContext) {
        ClusteringAgent clusteringAgent =
                abstractContext.getRootContext().getAxisConfiguration().getClusteringAgent();
        boolean canReplicate = false;
        if (clusteringAgent != null && clusteringAgent.getStateManager() != null) {
            canReplicate =
                    clusteringAgent.getStateManager().isContextClusterable(abstractContext);
        }
        return canReplicate;
    }

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     * @param messageContext The MessageContext to be subjected to this test
     * @return true - State needs to be replicated
     *         false - otherwise
     */
    private static boolean canReplicate(MessageContext messageContext) {
        ClusteringAgent clusteringAgent =
                messageContext.getRootContext().getAxisConfiguration().getClusteringAgent();
        return clusteringAgent != null && clusteringAgent.getStateManager() != null;
    }

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        return lbMembershipHandler;
    }


    public void send(MessageContext synCtx) {
        SessionInformation sessionInformation = null;
        Member currentMember = null;
        ConfigurationContext configCtx =
                ((Axis2MessageContext) synCtx).getAxis2MessageContext().getConfigurationContext();
        if (lbMembershipHandler.getConfigurationContext() == null) {
            lbMembershipHandler.setConfigurationContext(configCtx);
        }

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    }


    //----------------------- default method implementations and common code -----------------------


    public void init(SynapseEnvironment synapseEnvironment) {
        ConfigurationContext cc =
                ((Axis2SynapseEnvironment) synapseEnvironment).getAxis2ConfigurationContext();
        if (!initialized) {
            // The check for clustering environment
            ClusteringAgent clusteringAgent = cc.getAxisConfiguration().getClusteringAgent();
            if (clusteringAgent != null && clusteringAgent.getStateManager() != null) {
                isClusteringEnabled = Boolean.TRUE;
            } else {
                isClusteringEnabled = Boolean.FALSE;
            }

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