001/*
002 *  Copyright 2011 Anyware Services
003 *
004 *  Licensed under the Apache License, Version 2.0 (the "License");
005 *  you may not use this file except in compliance with the License.
006 *  You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 *  Unless required by applicable law or agreed to in writing, software
011 *  distributed under the License is distributed on an "AS IS" BASIS,
012 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 *  See the License for the specific language governing permissions and
014 *  limitations under the License.
015 */
016package org.ametys.plugins.blog.observer;
017
018import java.util.Map;
019
020import org.apache.avalon.framework.context.Context;
021import org.apache.avalon.framework.context.ContextException;
022import org.apache.avalon.framework.context.Contextualizable;
023import org.apache.avalon.framework.service.ServiceException;
024import org.apache.avalon.framework.service.ServiceManager;
025import org.apache.avalon.framework.service.Serviceable;
026import org.apache.cocoon.components.ContextHelper;
027import org.apache.cocoon.environment.Request;
028import org.apache.commons.lang3.ArrayUtils;
029
030import org.ametys.cms.content.indexing.solr.SolrIndexer;
031import org.ametys.cms.repository.Content;
032import org.ametys.core.observation.Event;
033import org.ametys.core.observation.Observer;
034import org.ametys.plugins.blog.BlogConstants;
035import org.ametys.plugins.blog.BlogPageHandler;
036import org.ametys.plugins.repository.AmetysObjectResolver;
037import org.ametys.plugins.repository.UnknownAmetysObjectException;
038import org.ametys.plugins.repository.provider.RequestAttributeWorkspaceSelector;
039import org.ametys.runtime.plugin.component.AbstractLogEnabled;
040import org.ametys.web.WebConstants;
041import org.ametys.web.indexing.solr.SolrPageIndexer;
042import org.ametys.web.repository.content.WebContent;
043import org.ametys.web.repository.page.Page;
044
045/**
046 * Abstract {@link Observer} for observing event on blog
047 */
048public abstract class AbstractBlogObserver extends AbstractLogEnabled implements Observer, Contextualizable, Serviceable
049//public abstract class AbstractBlogObserver extends AbstractLiveSolrObserver
050{
051    /** The context. */
052    protected Context _context;
053    /** The blog cache manager */
054    protected BlogPageHandler _blogRootPageHandler;
055    /** The ametys object resolver. */
056    protected AmetysObjectResolver _resolver;
057    /** The solr page indexer. */
058    protected SolrPageIndexer _solrPageIndexer;
059    /** The solr indexer */
060    protected SolrIndexer _solrIndexer;
061    
062    @Override
063    public void contextualize(Context context) throws ContextException
064    {
065        _context = context;
066    }
067    
068    @Override
069    public void service(ServiceManager smanager) throws ServiceException
070    {
071        _resolver = (AmetysObjectResolver) smanager.lookup(AmetysObjectResolver.ROLE);
072        _solrIndexer = (SolrIndexer) smanager.lookup(SolrIndexer.ROLE);
073        _solrPageIndexer = (SolrPageIndexer) smanager.lookup(SolrPageIndexer.ROLE);
074        _blogRootPageHandler = (BlogPageHandler) smanager.lookup(BlogPageHandler.ROLE);
075    }
076    
077    @Override
078    public int getPriority(Event event)
079    {
080        // Will be processed after live synchronization observers
081        return MAX_PRIORITY + 3000;
082    }
083    
084    @Override
085    public void observe(Event event, Map<String, Object> transientVars) throws Exception
086    {
087        Map<String, Object> args = event.getArguments();
088        
089        Content content = (Content) args.get(org.ametys.cms.ObservationConstants.ARGS_CONTENT);
090        
091        if (content != null && ArrayUtils.contains(content.getTypes(), BlogConstants.POST_CONTENT_TYPE))
092        {
093            // Retrieve current workspace
094            Request request = ContextHelper.getRequest(_context);
095            String currentWsp = RequestAttributeWorkspaceSelector.getForcedWorkspace(request);
096            
097            try
098            {
099                // Use live workspace
100                RequestAttributeWorkspaceSelector.setForcedWorkspace(request, WebConstants.LIVE_WORKSPACE);
101                
102                Content liveContent = null;
103                try
104                {
105                    // Retrieve page in the live workspace
106                    liveContent = _resolver.resolveById(content.getId());
107                }
108                catch (UnknownAmetysObjectException e)
109                {
110                    // Page is not synchronized
111                }
112                
113                if (liveContent != null)
114                {
115                    Page postPage = _blogRootPageHandler.getPostPage((WebContent) content);
116                    _internalObserve (event, postPage, (WebContent) content);
117                }
118            }
119            finally
120            {
121                // Restore context
122                RequestAttributeWorkspaceSelector.setForcedWorkspace(request, currentWsp);
123            }
124        }
125    }
126    
127    /**
128     * Do the actual work.
129     * @param event the observation event.
130     * @param postPage the Page holding the virtual factory.
131     * @param postContent the post content
132     */
133    protected abstract void _internalObserve(Event event, Page postPage, WebContent postContent);
134   
135}