Package org.teiid.rhq.plugin

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

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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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
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.metatype.api.types.MetaType;
import org.jboss.metatype.api.values.MapCompositeValueSupport;
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.PropertyMap;
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.core.util.ApplicationInfo;
import org.teiid.rhq.plugin.util.PluginConstants;
import org.teiid.rhq.plugin.util.ProfileServiceUtil;

/**
* Discovery component for Teiid Translator instances
*
*/
public class TranslatorDiscoveryComponent 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>();
    ProfileServiceConnection connection = ((PlatformComponent) discoveryContext
        .getParentResourceComponent()).getConnection();
 
    Set<ManagedComponent> translators = ProfileServiceUtil
        .getManagedComponents(connection, new ComponentType(
            PluginConstants.ComponentType.Translator.TYPE,
            PluginConstants.ComponentType.Translator.SUBTYPE));

    for (ManagedComponent translator : translators) {

      String translatorKey = translator.getName();
      String translatorName = ProfileServiceUtil.getSimpleValue(translator, "name", String.class); //$NON-NLS-1$
      String description = ProfileServiceUtil.getSimpleValue(translator, "description", String.class); //$NON-NLS-1$
     
      /**
       *
       * 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
          translatorKey, // Resource Key
          translatorName, // Resource Name
          ApplicationInfo.getInstance().getReleaseNumber(), // Version
          description, // Description
          discoveryContext.getDefaultPluginConfiguration(), // Plugin config
          null // Process info from a process scan
      );

      // Get plugin config map for models
      Configuration configuration = detail.getPluginConfiguration();

      configuration.put(new PropertySimple("name", translatorName));//$NON-NLS-1$
      detail.setPluginConfiguration(configuration);
     
       // Add to return values
      // First get translator specific properties
      ManagedProperty translatorProps = translator.getProperty("property");//$NON-NLS-1$
      PropertyList list = new PropertyList("translatorList");//$NON-NLS-1$
      PropertyMap propMap = null;
      getTranslatorValues(translatorProps.getValue(), propMap, list);

      // Now get common properties
      configuration.put(new PropertySimple("name", translatorName));//$NON-NLS-1$
      configuration.put(new PropertySimple("type",ProfileServiceUtil.getSimpleValue(translator,"type", String.class)));//$NON-NLS-1$ //$NON-NLS-2$

      detail.setPluginConfiguration(configuration);
      // Add to return values
      discoveredResources.add(detail);
      log.debug("Discovered Teiid Translator: " + translatorName);
    }

    return discoveredResources;
  }


  public static <T> void getTranslatorValues(MetaValue pValue,
      PropertyMap map, PropertyList list) throws Exception {
    MetaType metaType = pValue.getMetaType();
    MapCompositeValueSupport unwrappedvalue = null;
    if (metaType.isComposite()) {
      unwrappedvalue = (MapCompositeValueSupport)pValue;

      for (String key : unwrappedvalue.getMetaType().keySet()) {
        map = new PropertyMap("properties");//$NON-NLS-1$
        map.put(new PropertySimple("name", key));//$NON-NLS-1$
        map.put(new PropertySimple("value", ProfileServiceUtil.stringValue((MetaValue)unwrappedvalue.get(key))));//$NON-NLS-1$
        list.add(map);
      }
    } else {
      throw new IllegalStateException(pValue + " is not a Composite type");
    }

  }

}
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