Examples of org.apache.axis2.clustering.ClusteringAgent

org.apache.axis2.clustering.ClusteringAgent
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.

        return cartridge;
    }


    private static List<Member> getMemberInstances(String domain, String subDomain) {


        ClusteringAgent clusteringAgent = DataHolder.getServerConfigContext()
                .getAxisConfiguration().getClusteringAgent();
        GroupManagementAgent groupMgtAgent = clusteringAgent.getGroupManagementAgent(domain, subDomain);


        if (groupMgtAgent == null) {
            log.warn("Group Management Agent not found for domain : " + domain +
                    ", sub domain : " + subDomain);
            return null;

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    private static StateManager getStateManager(AbstractContext abstractContext) {
        return getClusterManager(abstractContext).getStateManager();
    }


    private static StateManager getStateManager(AxisConfiguration axisConfiguration) {
        ClusteringAgent clusteringAgent = axisConfiguration.getClusteringAgent();
        if (clusteringAgent != null) {
            return clusteringAgent.getStateManager();
        }
        return null;
    }

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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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public class ClusterAdmin {


    private static final Log log = LogFactory.getLog(ClusterAdmin.class);


    public GroupMember[] getMembers(String groupName) throws Exception {
        ClusteringAgent clusteringAgent = getClusteringAgent();
        GroupManagementAgent groupManagementAgent =
                clusteringAgent.getGroupManagementAgent(groupName);
        if (groupManagementAgent == null) {
            handleException("No GroupManagementAgent defined for domain " + groupName);
            return null;
        }
        List<Member> members = groupManagementAgent.getMembers();

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        return groupMembers;
    }


    public Group[] getGroups() throws Exception {
        ClusteringAgent clusteringAgent = getClusteringAgent();
        List<Group> groups = new ArrayList<Group>();
        Set<String> groupNames = clusteringAgent.getDomains();
        for (String groupName : groupNames) {
            Group group = new Group();
            group.setName(groupName);
            GroupManagementAgent gmAgent = clusteringAgent.getGroupManagementAgent(groupName);
            List<Member> memberList = gmAgent.getMembers();
            group.setDescription(gmAgent.getDescription());
            group.setNumberOfMembers(memberList.size());
            groups.add(group);
        }

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    public void endClusterMaintenance() throws Exception {
        sendToCluster(new EndMaintenanceCommand());
    }


    private void sendToCluster(GroupManagementCommand cmd) throws AxisFault {
        ClusteringAgent clusteringAgent = getClusteringAgent();
        Set<String> groupNames = clusteringAgent.getDomains();
        for (String groupName : groupNames) {
            GroupManagementAgent managementAgent =
                    clusteringAgent.getGroupManagementAgent(groupName);
            managementAgent.send(cmd);
        }
    }

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            managementAgent.send(cmd);
        }
    }


    private GroupManagementAgent getGroupManagementAgent(String groupName) throws AxisFault {
        ClusteringAgent clusteringAgent = getClusteringAgent();
        GroupManagementAgent groupManagementAgent =
                clusteringAgent.getGroupManagementAgent(groupName);
        if (groupManagementAgent == null) {
            handleException("No GroupManagementAgent defined for domain " + groupName);
        }
        return groupManagementAgent;
    }

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    private ClusteringAgent getClusteringAgent() throws AxisFault {
        AxisConfiguration axisConfig =
                MessageContext.getCurrentMessageContext().
                        getConfigurationContext().getAxisConfiguration();
        ClusteringAgent clusterManager = axisConfig.getClusteringAgent();
        if (clusterManager == null) {
            handleException("ClusteringAgent not enabled in axis2.xml file");
        }
        return clusterManager;
    }

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        return clusterManager;
    }


    private NodeManager getNodeManager() throws AxisFault {
        NodeManager nodeManager;
        ClusteringAgent clusteringAgent = getClusteringAgent();
        nodeManager = clusteringAgent.getNodeManager();
        if (nodeManager == null) {
            handleException("Cluster NodeManager not enabled in axis2.xml file");
        }
        return nodeManager;
    }

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