mirror of
https://github.com/Alfresco/alfresco-community-repo.git
synced 2025-10-29 15:21:53 +00:00
7dd2291753
107541: Merged 5.0.N (5.0.3) to HEAD-BUG-FIX (5.1/Cloud) (PARTIAL MERGE)
107413: Merged DEV to 5.0.N (5.0.3)
106858 : MNT-13545: JavaDoc : Inconsistencies between the Java doc and the actual code
- Cleaning of Javadoc,
107565: MNT-13545 Fix compilation after merge of Javadoc
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@107633 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
389 lines
14 KiB
Java
389 lines
14 KiB
Java
package org.alfresco.filesys.repo;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.nio.channels.FileChannel;
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import java.util.List;
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import org.alfresco.filesys.alfresco.ExtendedDiskInterface;
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import org.alfresco.filesys.alfresco.RepositoryDiskInterface;
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import org.alfresco.filesys.repo.rules.Command;
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import org.alfresco.filesys.repo.rules.commands.CloseFileCommand;
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import org.alfresco.filesys.repo.rules.commands.CompoundCommand;
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import org.alfresco.filesys.repo.rules.commands.CopyContentCommand;
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import org.alfresco.filesys.repo.rules.commands.CreateFileCommand;
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import org.alfresco.filesys.repo.rules.commands.DeleteFileCommand;
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import org.alfresco.filesys.repo.rules.commands.DoNothingCommand;
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import org.alfresco.filesys.repo.rules.commands.MoveFileCommand;
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import org.alfresco.filesys.repo.rules.commands.OpenFileCommand;
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import org.alfresco.filesys.repo.rules.commands.ReduceQuotaCommand;
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import org.alfresco.filesys.repo.rules.commands.RemoveNoContentFileOnError;
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import org.alfresco.filesys.repo.rules.commands.RemoveTempFileCommand;
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import org.alfresco.filesys.repo.rules.commands.RenameFileCommand;
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import org.alfresco.filesys.repo.rules.commands.RestoreFileCommand;
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import org.alfresco.filesys.repo.rules.commands.ReturnValueCommand;
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import org.alfresco.jlan.server.SrvSession;
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import org.alfresco.jlan.server.filesys.TreeConnection;
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import org.alfresco.repo.transaction.AlfrescoTransactionSupport.TxnReadState;
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import org.alfresco.repo.transaction.RetryingTransactionHelper;
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import org.alfresco.repo.transaction.RetryingTransactionHelper.RetryingTransactionCallback;
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import org.alfresco.service.transaction.TransactionService;
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import org.alfresco.util.FileFilterMode;
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import org.alfresco.util.PropertyCheck;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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/**
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* Content Disk Driver Command Executor
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* <p>
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* Executes commands against the repository.
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*/
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public class CommandExecutorImpl implements CommandExecutor
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{
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private static Log logger = LogFactory.getLog(CommandExecutorImpl.class);
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// Services go here.
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private TransactionService transactionService;
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private RepositoryDiskInterface repositoryDiskInterface;
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private ExtendedDiskInterface diskInterface;
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public void init()
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{
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PropertyCheck.mandatory(this, "transactionService", transactionService);
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PropertyCheck.mandatory(this, "diskInterface", diskInterface);
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PropertyCheck.mandatory(this, "repositoryDiskInterface", getRepositoryDiskInterface());
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}
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@Override
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public Object execute(final SrvSession sess, final TreeConnection tree, final Command command) throws IOException
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{
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TxnReadState readState = command.getTransactionRequired();
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Object ret = null;
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// No transaction required.
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if(readState == TxnReadState.TXN_NONE)
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{
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ret = executeInternal(sess, tree, command, null);
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}
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else
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{
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// Yes a transaction is required.
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RetryingTransactionHelper helper = transactionService.getRetryingTransactionHelper();
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boolean readOnly = readState == TxnReadState.TXN_READ_ONLY;
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RetryingTransactionCallback<Object> cb = new RetryingTransactionCallback<Object>()
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{
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/**
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* Perform a set of commands as a unit of transactional work.
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*
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* @return Return the result of the unit of work
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* @throws IOException
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*/
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public Object execute() throws IOException
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{
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try
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{
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return executeInternal(sess, tree, command, null);
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}
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catch (IOException e)
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{
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// Ensure original checked IOExceptions get propagated
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throw new PropagatingException(e);
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}
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}
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};
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try
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{
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ret = helper.doInTransaction(cb, readOnly);
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}
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catch(PropagatingException pe)
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{
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if(command instanceof CompoundCommand)
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{
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if(logger.isDebugEnabled())
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{
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logger.debug("error executing command :command" + command, pe);
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}
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CompoundCommand c = (CompoundCommand)command;
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// Error Callback Here ?
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List<Command> commands = c.getPostErrorCommands();
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if(commands != null)
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{
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for(Command c2 : commands)
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{
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try
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{
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executeInternal(sess, tree, c2, ret);
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}
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catch(Throwable t)
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{
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logger.warn("caught and ignored exception from error handler", t);
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// Swallow exception from error handler.
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}
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}
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}
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}
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// Unwrap checked exceptions
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throw (IOException) pe.getCause();
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}
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}
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/**
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* execute post commit commands.
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*/
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if(command instanceof CompoundCommand)
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{
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logger.debug("post commit of compound command");
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CompoundCommand c = (CompoundCommand)command;
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List<Command> commands = c.getPostCommitCommands();
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if(commands != null)
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{
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for(Command c2 : commands)
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{
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// TODO - what about exceptions from post commit?
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executeInternal(sess, tree, c2, ret);
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}
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}
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}
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return ret;
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}
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/**
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* @param sess SrvSession
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* @param tree TreeConnection
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* @param command Command
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* @param result Object
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* @return Object
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* @throws IOException
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*/
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private Object executeInternal(SrvSession sess, TreeConnection tree, Command command, Object result) throws IOException
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{
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FileFilterMode.setClient(ClientHelper.getClient(sess));
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try
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{
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if(command instanceof CompoundCommand)
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{
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Object ret = null;
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logger.debug("compound command received");
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CompoundCommand x = (CompoundCommand)command;
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for(Command compoundPart : x.getCommands())
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{
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logger.debug("running part of compound command");
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Object val = executeInternal(sess, tree, compoundPart, result);
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if(val != null)
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{
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// Return the value from the last command.
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ret = val;
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}
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}
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return ret;
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}
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else if(command instanceof CreateFileCommand)
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{
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logger.debug("create file command");
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CreateFileCommand create = (CreateFileCommand)command;
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return repositoryDiskInterface.createFile(create.getRootNode(), create.getPath(), create.getAllocationSize(), create.isHidden());
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}
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else if(command instanceof RestoreFileCommand)
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{
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logger.debug("restore file command");
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RestoreFileCommand restore = (RestoreFileCommand)command;
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return repositoryDiskInterface.restoreFile(sess, tree, restore.getRootNode(), restore.getPath(), restore.getAllocationSize(), restore.getOriginalNodeRef());
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}
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else if(command instanceof DeleteFileCommand)
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{
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logger.debug("delete file command");
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DeleteFileCommand delete = (DeleteFileCommand)command;
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return repositoryDiskInterface.deleteFile2(sess, tree, delete.getRootNode(), delete.getPath());
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}
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else if(command instanceof OpenFileCommand)
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{
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logger.debug("open file command");
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OpenFileCommand o = (OpenFileCommand)command;
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OpenFileMode mode = o.getMode();
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return repositoryDiskInterface.openFile(sess, tree, o.getRootNodeRef(), o.getPath(), mode, o.isTruncate());
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}
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else if(command instanceof CloseFileCommand)
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{
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logger.debug("close file command");
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CloseFileCommand c = (CloseFileCommand)command;
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return repositoryDiskInterface.closeFile(tree, c.getRootNodeRef(), c.getPath(), c.getNetworkFile());
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}
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else if(command instanceof ReduceQuotaCommand)
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{
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logger.debug("reduceQuota file command");
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ReduceQuotaCommand r = (ReduceQuotaCommand)command;
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repositoryDiskInterface.reduceQuota(sess, tree, r.getNetworkFile());
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}
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else if(command instanceof RenameFileCommand)
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{
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logger.debug("rename command");
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RenameFileCommand rename = (RenameFileCommand)command;
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repositoryDiskInterface.renameFile(rename.getRootNode(), rename.getFromPath(), rename.getToPath(), rename.isSoft(), false);
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}
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else if(command instanceof MoveFileCommand)
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{
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logger.debug("move command");
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MoveFileCommand move = (MoveFileCommand)command;
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repositoryDiskInterface.renameFile(move.getRootNode(), move.getFromPath(), move.getToPath(), false, move.isMoveAsSystem());
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}
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else if(command instanceof CopyContentCommand)
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{
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if(logger.isDebugEnabled())
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{
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logger.debug("Copy content command - copy content");
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}
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CopyContentCommand copy = (CopyContentCommand)command;
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repositoryDiskInterface.copyContent(copy.getRootNode(), copy.getFromPath(), copy.getToPath());
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}
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else if(command instanceof DoNothingCommand)
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{
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if(logger.isDebugEnabled())
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{
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logger.debug("Do Nothing Command - doing nothing");
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}
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}
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else if(command instanceof ResultCallback)
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{
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if(logger.isDebugEnabled())
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{
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logger.debug("Result Callback");
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}
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ResultCallback callback = (ResultCallback)command;
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callback.execute(result);
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}
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else if(command instanceof RemoveTempFileCommand)
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{
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RemoveTempFileCommand r = (RemoveTempFileCommand)command;
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if(logger.isDebugEnabled())
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{
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logger.debug("Remove Temp File:" + r.getNetworkFile());
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}
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File file = r.getNetworkFile().getFile();
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boolean isDeleted = file.delete();
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if(!isDeleted)
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{
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logger.debug("unable to delete temp file:" + r.getNetworkFile() + ", closed="+ r.getNetworkFile().isClosed());
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/*
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* Unable to delete temporary file
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* Could be a bug with the file handle not being closed, but yourkit does not
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* find anything awry.
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* There are reported Windows JVM bugs such as 4715154 ...
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*/
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FileChannel outChan = null;
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try
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{
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outChan = new FileOutputStream(file).getChannel();
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outChan.truncate(0);
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}
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catch (IOException e)
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{
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logger.debug("unable to clean up file", e);
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}
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finally
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{
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if(outChan != null)
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{
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try
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{
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outChan.close();
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}
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catch(IOException e){}
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}
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}
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}
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}
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else if(command instanceof ReturnValueCommand)
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{
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ReturnValueCommand r = (ReturnValueCommand)command;
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if(logger.isDebugEnabled())
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{
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logger.debug("Return value");
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}
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return r.getReturnValue();
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}
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else if(command instanceof RemoveNoContentFileOnError)
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{
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RemoveNoContentFileOnError r = (RemoveNoContentFileOnError)command;
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if(logger.isDebugEnabled())
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{
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logger.debug("Remove no content file on error");
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}
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repositoryDiskInterface.deleteEmptyFile(r.getRootNodeRef(), r.getPath());
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}
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}
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finally
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{
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FileFilterMode.clearClient();
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}
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return null;
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}
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public void setTransactionService(TransactionService transactionService)
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{
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this.transactionService = transactionService;
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}
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public TransactionService getTransactionService()
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{
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return transactionService;
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}
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public void setRepositoryDiskInterface(RepositoryDiskInterface repositoryDiskInterface)
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{
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this.repositoryDiskInterface = repositoryDiskInterface;
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}
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public RepositoryDiskInterface getRepositoryDiskInterface()
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{
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return repositoryDiskInterface;
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}
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public void setDiskInterface(ExtendedDiskInterface diskInterface)
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{
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this.diskInterface = diskInterface;
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}
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public ExtendedDiskInterface getDiskInterface()
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{
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return diskInterface;
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}
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/**
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* A wrapper for checked exceptions to be passed through the retrying transaction handler.
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*/
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protected static class PropagatingException extends RuntimeException
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{
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private static final long serialVersionUID = 1L;
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/**
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* @param cause Throwable
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*/
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public PropagatingException(Throwable cause)
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{
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super(cause);
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}
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}
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}
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