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Added AVM callback handlers to update the virtualization view pseudo folders when stores/versions are created or purged.

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The callback handlers queue change notifications so Windows Explorer views that are open on a pseudo folder should update (most of the time).

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@4595 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Gary Spencer
2006-12-13 15:40:34 +00:00
parent 62ada8ea7f
commit 4834c89f5a
4 changed files with 327 additions and 7 deletions
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239
source/java/org/alfresco/filesys/avm/AVMContext.java
View File

@@ -20,7 +20,17 @@ package org.alfresco.filesys.avm;
import org.alfresco.filesys.alfresco.AlfrescoContext;
import org.alfresco.filesys.alfresco.IOControlHandler;
import org.alfresco.filesys.server.filesys.DiskInterface;
import org.alfresco.filesys.server.filesys.FileName;
import org.alfresco.filesys.server.filesys.FileSystem;
import org.alfresco.filesys.server.filesys.NotifyChange;
import org.alfresco.filesys.server.state.FileState;
import org.alfresco.filesys.server.state.FileStateTable;
import org.alfresco.repo.avm.CreateStoreCallback;
import org.alfresco.repo.avm.CreateVersionCallback;
import org.alfresco.repo.avm.PurgeStoreCallback;
import org.alfresco.repo.avm.PurgeVersionCallback;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* AVM Filesystem Context Class
@@ -29,8 +39,13 @@ import org.alfresco.filesys.server.filesys.FileSystem;
*
* @author GKSpencer
*/
public class AVMContext extends AlfrescoContext {
public class AVMContext extends AlfrescoContext
implements CreateStoreCallback, PurgeStoreCallback, CreateVersionCallback, PurgeVersionCallback {
// Logging
private static final Log logger = LogFactory.getLog(AVMContext.class);
// Constants
//
// Version id that indicates the head version
@@ -149,4 +164,226 @@ public class AVMContext extends AlfrescoContext {
{
return null;
}
/**
* Create store call back handler
*
* @param storeName String
* @param versionID int
*/
public void storeCreated(String storeName)
{
// Make sure the file state cache is enabled
FileStateTable fsTable = getStateTable();
if ( fsTable == null)
return;
// Find the file state for the root folder
FileState rootState = fsTable.findFileState( FileName.DOS_SEPERATOR_STR);
if ( rootState != null && rootState.hasPseudoFiles())
{
// Add a pseudo folder for the new store
rootState.addPseudoFile( new StorePseudoFile( storeName));
// DEBUG
if ( logger.isDebugEnabled())
logger.debug( "Added pseudo folder for new store " + storeName);
// Send a change notification for the new folder
if ( hasChangeHandler())
{
// Build the filesystem relative path to the new store folder
StringBuilder str = new StringBuilder();
str.append( FileName.DOS_SEPERATOR);
str.append( storeName);
// Send the change notification
getChangeHandler().notifyDirectoryChanged(NotifyChange.ActionAdded, str.toString());
}
}
}
/**
* Purge store call back handler
*
* @param storeName String
*/
public void storePurged(String storeName)
{
// Make sure the file state cache is enabled
FileStateTable fsTable = getStateTable();
if ( fsTable == null)
return;
// Find the file state for the root folder
FileState rootState = fsTable.findFileState( FileName.DOS_SEPERATOR_STR);
if ( rootState != null && rootState.hasPseudoFiles())
{
// Remove the pseudo folder for the store
rootState.getPseudoFileList().removeFile( storeName, false);
// Build the filesystem relative path to the deleted store folder
StringBuilder pathStr = new StringBuilder();
pathStr.append( FileName.DOS_SEPERATOR);
pathStr.append( storeName);
// Remove the file state for the deleted store
String storePath = pathStr.toString();
fsTable.removeFileState( storePath);
// DEBUG
if ( logger.isDebugEnabled())
logger.debug( "Removed pseudo folder for purged store " + storeName);
// Send a change notification for the deleted folder
if ( hasChangeHandler())
{
// Send the change notification
getChangeHandler().notifyDirectoryChanged(NotifyChange.ActionRemoved, storePath);
}
}
}
/**
* Create version call back handler
*
* @param storeName String
* @param versionID int
*/
public void versionCreated(String storeName, int versionID)
{
// Make sure the file state cache is enabled
FileStateTable fsTable = getStateTable();
if ( fsTable == null)
return;
// Build the path to the store version folder
StringBuilder pathStr = new StringBuilder();
pathStr.append( FileName.DOS_SEPERATOR);
pathStr.append( storeName);
pathStr.append( FileName.DOS_SEPERATOR);
pathStr.append( AVMPath.VersionsFolder);
// Find the file state for the store versions folder
FileState verState = fsTable.findFileState( pathStr.toString());
if ( verState != null && verState.hasPseudoFiles())
{
// Create the version folder name
StringBuilder verStr = new StringBuilder();
verStr.append( AVMPath.VersionFolderPrefix);
verStr.append( versionID);
String verName = verStr.toString();
// Add a pseudo folder for the new version
verState.addPseudoFile( new VersionPseudoFile( verName));
// DEBUG
if ( logger.isDebugEnabled())
logger.debug( "Added pseudo folder for new version " + storeName + ":/" + verName);
// Send a change notification for the new folder
if ( hasChangeHandler())
{
// Build the filesystem relative path to the new version folder
pathStr.append( FileName.DOS_SEPERATOR);
pathStr.append( verName);
// Send the change notification
getChangeHandler().notifyDirectoryChanged(NotifyChange.ActionAdded, pathStr.toString());
}
}
}
/**
* Purge version call back handler
*
* @param storeName String
*/
public void versionPurged(String storeName, int versionID)
{
// Make sure the file state cache is enabled
FileStateTable fsTable = getStateTable();
if ( fsTable == null)
return;
// Build the path to the store version folder
StringBuilder pathStr = new StringBuilder();
pathStr.append( FileName.DOS_SEPERATOR);
pathStr.append( storeName);
pathStr.append( FileName.DOS_SEPERATOR);
pathStr.append( AVMPath.VersionsFolder);
// Find the file state for the store versions folder
FileState verState = fsTable.findFileState( pathStr.toString());
if ( verState != null && verState.hasPseudoFiles())
{
// Create the version folder name
StringBuilder verStr = new StringBuilder();
verStr.append( AVMPath.VersionFolderPrefix);
verStr.append( versionID);
String verName = verStr.toString();
// Remove the pseudo folder for the purged version
verState.getPseudoFileList().removeFile( verName, true);
// DEBUG
if ( logger.isDebugEnabled())
logger.debug( "Removed pseudo folder for purged version " + storeName + ":/" + verName);
// Send a change notification for the deleted folder
if ( hasChangeHandler())
{
// Build the filesystem relative path to the deleted version folder
pathStr.append( FileName.DOS_SEPERATOR);
pathStr.append( verName);
// Send the change notification
getChangeHandler().notifyDirectoryChanged(NotifyChange.ActionRemoved, pathStr.toString());
}
}
}
}

61
source/java/org/alfresco/filesys/avm/AVMDiskDriver.java
View File

@@ -50,6 +50,10 @@ import org.alfresco.filesys.server.pseudo.PseudoFolderNetworkFile;
import org.alfresco.filesys.server.state.FileState;
import org.alfresco.filesys.util.StringList;
import org.alfresco.filesys.util.WildCard;
import org.alfresco.repo.avm.CreateStoreTxnListener;
import org.alfresco.repo.avm.CreateVersionTxnListener;
import org.alfresco.repo.avm.PurgeStoreTxnListener;
import org.alfresco.repo.avm.PurgeVersionTxnListener;
import org.alfresco.repo.security.authentication.AuthenticationComponent;
import org.alfresco.service.cmr.avm.AVMExistsException;
import org.alfresco.service.cmr.avm.AVMNodeDescriptor;
@@ -97,6 +101,14 @@ public class AVMDiskDriver extends AlfrescoDiskDriver implements DiskInterface {
private AuthenticationComponent m_authComponent;
private AuthenticationService m_authService;
// AVM listeners
private CreateStoreTxnListener m_createStoreListener;
private PurgeStoreTxnListener m_purgeStoreListener;
private CreateVersionTxnListener m_createVerListener;
private PurgeVersionTxnListener m_purgeVerListener;
/**
* Default constructor
*/
@@ -184,6 +196,46 @@ public class AVMDiskDriver extends AlfrescoDiskDriver implements DiskInterface {
m_mimetypeService = mimetypeService;
}
/**
* Set the create store listener
*
* @param createStoreListener CreateStoreTxnListener
*/
public void setCreateStoreListener(CreateStoreTxnListener createStoreListener)
{
m_createStoreListener = createStoreListener;
}
/**
* Set the purge store listener
*
* @param purgeStoreListener PurgeStoreTxnListener
*/
public void setPurgeStoreListener(PurgeStoreTxnListener purgeStoreListener)
{
m_purgeStoreListener = purgeStoreListener;
}
/**
* Set the create version listener
*
* @param createVersionListener CreateVersionTxnListener
*/
public void setCreateVersionListener(CreateVersionTxnListener createVersionListener)
{
m_createVerListener = createVersionListener;
}
/**
* Set the purge version listener
*
* @param purgeVersionListener PurgeVersionTxnListener
*/
public void setPurgeVersionListener(PurgeVersionTxnListener purgeVersionListener)
{
m_purgeVerListener = purgeVersionListener;
}
/**
* Parse and validate the parameter string and create a device context object for this instance
* of the shared device.
@@ -248,6 +300,15 @@ public class AVMDiskDriver extends AlfrescoDiskDriver implements DiskInterface {
rootState.addPseudoFile( new StorePseudoFile( storeDesc));
}
}
// Plug the virtualization view context into the various store/version call back listeners
// so that store/version pseudo folders can be kept in sync with AVM
m_createStoreListener.addCallback( context);
m_purgeStoreListener.addCallback( context);
m_createVerListener.addCallback( context);
m_purgeVerListener.addCallback( context);
}
else
{

17
source/java/org/alfresco/filesys/avm/StorePseudoFile.java
View File

@@ -51,6 +51,23 @@ public class StorePseudoFile extends PseudoFile {
setFileInfo( fInfo);
}
/**
* Class constructor
*
* @param storeName String
*/
public StorePseudoFile( String storeName)
{
super( storeName, FileAttribute.Directory + FileAttribute.ReadOnly);
// Create static file information from the store details
FileInfo fInfo = new FileInfo( storeName, 0L, FileAttribute.Directory + FileAttribute.ReadOnly);
fInfo.setCreationDateTime( System.currentTimeMillis());
setFileInfo( fInfo);
}
/**
* Return a network file for reading/writing the pseudo file
*