MOB-690 - WCM PreviewURIService - checkpoint

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@14642 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/wcm/preview/VirtualisationServerPreviewURIService.java

@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2005-2009 Alfresco Software Limited.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program 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 General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+ * As a special exception to the terms and conditions of version 2.0 of 
+ * the GPL, you may redistribute this Program in connection with Free/Libre 
+ * and Open Source Software ("FLOSS") applications as described in Alfresco's 
+ * FLOSS exception.  You should have received a copy of the text describing 
+ * the FLOSS exception, and it is also available here: 
+ * http://www.alfresco.com/legal/licensing"
+ */
+
+package org.alfresco.wcm.preview;
+
+import java.text.MessageFormat;
+
+import org.alfresco.config.JNDIConstants;
+import org.alfresco.mbeans.VirtServerRegistry;
+import org.alfresco.service.cmr.avm.AVMService;
+import org.alfresco.util.ParameterCheck;
+import org.alfresco.wcm.util.WCMUtil;
+
+
+/**
+ * A PreviewURIService that constructs a virtualisation server URI.
+ *
+ * @author Peter Monks, janv
+ * 
+ * @since 3.2
+ */
+public class VirtualisationServerPreviewURIService extends AbstractPreviewURIServiceProvider
+{
+    // TODO - remove deprecated constants from JNDIConstants
+    
+    /**
+     * Default virtualization server IP address 
+     */
+    public final static String DEFAULT_VSERVER_IP = "127-0-0-1.ip.alfrescodemo.net";
+    
+    /**
+     * Default virtualization server port number
+     */
+    public final static int DEFAULT_VSERVER_PORT = 8180;
+    
+    /**
+     * Virtualization server sandbox URL pattern
+     */
+    public final static String PREVIEW_SANDBOX_URL = "http://{0}.www--sandbox.{1}:{2}";
+    
+    /**
+     * Virtualization server asset URL pattern
+     */
+    public final static String PREVIEW_ASSET_URL   = "http://{0}.www--sandbox.{1}:{2}{3}";
+    
+    
+    private AVMService avmService;
+    private VirtServerRegistry virtSvrRegistry;
+    
+    public void setAvmService(AVMService avmService)
+    {
+        this.avmService = avmService;
+    }
+    
+    public void setVirtServerRegistry(VirtServerRegistry virtSvrRegistry)
+    {
+        this.virtSvrRegistry = virtSvrRegistry;
+    }
+    
+    /* (non-Javadoc)
+     * @see org.alfresco.wcm.preview.PreviewURIServiceProvider#getPreviewURI(java.lang.String, java.lang.String, org.alfresco.wcm.preview.PreviewContext)
+     */
+    public String getPreviewURI(String sbStoreId, String pathToAsset, PreviewContext ignored)
+    {
+        ParameterCheck.mandatoryString("sbStoreId", sbStoreId);
+        
+        if ((pathToAsset == null) || (pathToAsset.length() == 0))
+        {
+            return buildPreviewStoreUrl(sbStoreId, getVServerDomain(), getVServerPort(),  WCMUtil.lookupStoreDNS(avmService, sbStoreId));
+        }
+        
+        // Sanity checking
+        if (!pathToAsset.startsWith('/' + JNDIConstants.DIR_DEFAULT_WWW + '/' + JNDIConstants.DIR_DEFAULT_APPBASE))
+        {
+            throw new IllegalStateException("Invalid asset path in AVM node ref: " + sbStoreId + ":" + pathToAsset);
+        }
+        
+        return buildPreviewAssetUrl(pathToAsset, getVServerDomain(), getVServerPort(), WCMUtil.lookupStoreDNS(avmService, sbStoreId));
+    }
+    
+    private String buildPreviewStoreUrl(String sbStoreId, String domain, String port, String dns)
+    {
+        return MessageFormat.format(PREVIEW_SANDBOX_URL, dns, domain, port);
+    }
+    
+    private String buildPreviewAssetUrl(String assetPath, String domain, String port, String dns)
+    {
+        ParameterCheck.mandatoryString("assetPath", assetPath);
+        
+       if (domain == null || port == null || dns == null)
+       {
+          throw new IllegalArgumentException("Domain, port and dns name are mandatory.");
+       }
+       
+       if (assetPath.startsWith(JNDIConstants.DIR_DEFAULT_WWW_APPBASE))
+       {
+          assetPath = assetPath.substring((JNDIConstants.DIR_DEFAULT_WWW_APPBASE).length());
+       }
+       if (assetPath.startsWith(WCMUtil.PATH_SEPARATOR + WCMUtil.DIR_ROOT))
+       {
+          assetPath = assetPath.substring((WCMUtil.PATH_SEPARATOR + WCMUtil.DIR_ROOT).length());
+       }
+       
+       assetPath = WCMUtil.addLeadingSlash(assetPath);
+       
+       return MessageFormat.format(PREVIEW_ASSET_URL, dns, domain, port, assetPath);
+    }
+    
+    /**
+     * @return VServer Port
+     */
+    private String getVServerPort()
+    {
+        Integer port = (virtSvrRegistry != null ? virtSvrRegistry.getVirtServerHttpPort() : null);
+        if (port == null)
+        {
+            port = DEFAULT_VSERVER_PORT;
+        }
+        return port.toString();
+    }
+    
+    /**
+     * @return VServer Domain
+     */
+    private String getVServerDomain()
+    {
+        String domain = (virtSvrRegistry != null ? virtSvrRegistry.getVirtServerFQDN() : null);
+        if (domain == null)
+        {
+            domain = DEFAULT_VSERVER_IP;
+        }
+        return domain;
+    }
+}