Package org.teiid.rhq.plugin

Source Code of org.teiid.rhq.plugin.DataRoleDiscoveryComponent

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* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership.  Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
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*/
package org.teiid.rhq.plugin;

import java.util.HashSet;
import java.util.Set;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jboss.managed.api.ComponentType;
import org.jboss.managed.api.ManagedComponent;
import org.jboss.managed.api.ManagedProperty;
import org.jboss.managed.plugins.ManagedObjectImpl;
import org.jboss.metatype.api.values.CollectionValueSupport;
import org.jboss.metatype.api.values.GenericValueSupport;
import org.jboss.metatype.api.values.MetaValue;
import org.rhq.core.domain.configuration.Configuration;
import org.rhq.core.domain.configuration.PropertyList;
import org.rhq.core.domain.configuration.PropertySimple;
import org.rhq.core.pluginapi.inventory.DiscoveredResourceDetails;
import org.rhq.core.pluginapi.inventory.InvalidPluginConfigurationException;
import org.rhq.core.pluginapi.inventory.ResourceDiscoveryComponent;
import org.rhq.core.pluginapi.inventory.ResourceDiscoveryContext;
import org.rhq.plugins.jbossas5.connection.ProfileServiceConnection;
import org.teiid.rhq.plugin.util.PluginConstants;
import org.teiid.rhq.plugin.util.ProfileServiceUtil;

/**
* Discovery component for Data Roles of a VDB
*
*/
public class DataRoleDiscoveryComponent implements ResourceDiscoveryComponent {

  private final Log log = LogFactory
      .getLog(PluginConstants.DEFAULT_LOGGER_CATEGORY);

  public Set<DiscoveredResourceDetails> discoverResources(
      ResourceDiscoveryContext discoveryContext)
      throws InvalidPluginConfigurationException, Exception {
    Set<DiscoveredResourceDetails> discoveredResources = new HashSet<DiscoveredResourceDetails>();
    VDBComponent parenComponent = (VDBComponent) discoveryContext
        .getParentResourceComponent();
    ProfileServiceConnection connection = parenComponent.getConnection();

    ManagedComponent mcVdb = ProfileServiceUtil.getManagedComponent(
        connection, new ComponentType(
            PluginConstants.ComponentType.VDB.TYPE,
            PluginConstants.ComponentType.VDB.SUBTYPE),
        parenComponent.name);

    // Get data roles from VDB
    ManagedProperty property = mcVdb.getProperty("dataPolicies");
    if (property != null) {
      CollectionValueSupport valueSupport = (CollectionValueSupport) property
          .getValue();
      MetaValue[] metaValues = valueSupport.getElements();

      for (MetaValue value : metaValues) {
        GenericValueSupport genValueSupport = (GenericValueSupport) value;
        ManagedObjectImpl managedObject = (ManagedObjectImpl) genValueSupport
            .getValue();

        String dataRoleName = ProfileServiceUtil.getSimpleValue(
            managedObject, "name", String.class);
        Boolean anyAuthenticated = ProfileServiceUtil.getSimpleValue(
            managedObject, "anyAuthenticated", Boolean.class);
        String description = ProfileServiceUtil.getSimpleValue(
            managedObject, "description", String.class);

        /**
         *
         * A discovered resource must have a unique key, that must stay
         * the same when the resource is discovered the next time
         */
        DiscoveredResourceDetails detail = new DiscoveredResourceDetails(
            discoveryContext.getResourceType(), // ResourceType
            dataRoleName, // Resource Key
            dataRoleName, // Resource Name
            null, // Version
            PluginConstants.ComponentType.DATA_ROLE.DESCRIPTION, // Description
            discoveryContext.getDefaultPluginConfiguration(), // Plugin
            // Config
            null // Process info from a process scan
        );

        Configuration configuration = detail.getPluginConfiguration();

        configuration.put(new PropertySimple("name", dataRoleName));
        configuration.put(new PropertySimple("anyAuthenticated",
            anyAuthenticated));
        configuration
            .put(new PropertySimple("description", description));

        PropertyList mappedRoleNameList = new PropertyList(
            "mappedRoleNameList");
        configuration.put(mappedRoleNameList);
        ManagedProperty mappedRoleNames = managedObject
            .getProperty("mappedRoleNames");
        if (mappedRoleNames != null) {
          CollectionValueSupport props = (CollectionValueSupport)mappedRoleNames.getValue();
          for (MetaValue mappedRoleName : props.getElements()) {
            mappedRoleNameList.add(new PropertySimple("name", ProfileServiceUtil.stringValue(mappedRoleName)));
          }

        }
        // Add to return values
        discoveredResources.add(detail);
        log.debug("Discovered Teiid VDB Data Role: " + dataRoleName);
      }
    }
   
    return discoveredResources;

  }
}
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