/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 */
package org.apache.qpid.server.virtualhost;

import java.util.Collection;
import java.util.Map;

import org.apache.qpid.server.logging.subjects.MessageStoreLogSubject;
import org.apache.qpid.server.model.ManagedObject;
import org.apache.qpid.server.model.VirtualHostNode;
import org.apache.qpid.server.plugin.MessageStoreFactory;
import org.apache.qpid.server.store.MessageStore;

@ManagedObject( category = false, type = "STANDARD")
public class StandardVirtualHost extends AbstractVirtualHost<StandardVirtualHost>
{

    public static final String TYPE = "STANDARD";
    MessageStore _messageStore;

    private MessageStoreLogSubject _messageStoreLogSubject;

    public StandardVirtualHost(final Map<String, Object> attributes, VirtualHostNode<?> virtualHostNode)
    {
        super(attributes, virtualHostNode);
    }

    @Override
    public void validate()
    {
        super.validate();


        VirtualHostNode<?> virtualHostNode = getParent(VirtualHostNode.class);
        if (!virtualHostNode.isMessageStoreProvider())
        {
            Map<String,Object> attributes = getActualAttributes();
            Map<String, Object> messageStoreSettings = getMessageStoreSettings();
            if (messageStoreSettings == null)
            {
                throw new IllegalArgumentException("Attribute '"+ org.apache.qpid.server.model.VirtualHost.MESSAGE_STORE_SETTINGS + "' is required.");
            }

            Object storeType = messageStoreSettings.get(MessageStore.STORE_TYPE);

            // need store type and path
            Collection<String> knownTypes = MessageStoreFactory.FACTORY_LOADER.getSupportedTypes();

            if (storeType == null)
            {
                throw new IllegalArgumentException("Setting '"+ MessageStore.STORE_TYPE
                                                   +"' is required in attribute " + org.apache.qpid.server.model.VirtualHost.MESSAGE_STORE_SETTINGS + ". Known types are : " + knownTypes);
            }
            else if (!(storeType instanceof String))
            {
                throw new IllegalArgumentException("Setting '"+ MessageStore.STORE_TYPE
                                                   +"' is required and must be of type String. "
                                                   +"Known types are : " + knownTypes);
            }

            MessageStoreFactory factory = MessageStoreFactory.FACTORY_LOADER.get((String)storeType);
            if(factory == null)
            {
                throw new IllegalArgumentException("Setting '"+ MessageStore.STORE_TYPE
                                                   +"' has value '" + storeType + "' which is not one of the valid values: "
                                                   + "Known types are : " + knownTypes);
            }

            factory.validateAttributes(attributes);
        }
    }

    @Override
    protected void initialiseStorage()
    {
        VirtualHostNode<?> virtualHostNode = getParent(VirtualHostNode.class);
        if (virtualHostNode.isMessageStoreProvider())
        {
            _messageStore = (MessageStore)virtualHostNode.getConfigurationStore();
        }
        else
        {
            Map<String, Object> messageStoreSettings = getMessageStoreSettings();
            String storeType = (String) messageStoreSettings.get(MessageStore.STORE_TYPE);
            _messageStore = MessageStoreFactory.FACTORY_LOADER.get(storeType).createMessageStore();
        }

        _messageStoreLogSubject = new MessageStoreLogSubject(getName(), _messageStore.getClass().getSimpleName());
    }

    @Override
    public MessageStore getMessageStore()
    {
        return _messageStore;
    }

    @Override
    protected MessageStoreLogSubject getMessageStoreLogSubject()
    {
        return _messageStoreLogSubject;
    }

}
