Examples with TempNetworkFile org.alfresco.filesys.repo.TempNetworkFile used on opensource projects

Example 1 with TempNetworkFile

use of org.alfresco.filesys.repo.TempNetworkFile in project alfresco-repository by Alfresco.

the class ScenarioOpenFileInstance method evaluate.

/**
 * Evaluate the next operation
 * @param operation
 */
public Command evaluate(Operation operation) {
    /**
     * Anti Pattern - Delete of the open file.
     */
    if (operation instanceof DeleteFileOperation) {
        DeleteFileOperation d = (DeleteFileOperation) operation;
        if (d.getName() == null) {
            return null;
        }
        if (name.equalsIgnoreCase(d.getName())) {
            logger.debug("Anti-Pattern - delete of the open file, scenario:" + this);
            isComplete = true;
            return null;
        }
    }
    switch(state) {
        case NONE:
            if (operation instanceof CreateFileOperation) {
                CreateFileOperation c = (CreateFileOperation) operation;
                name = c.getName();
                if (name != null) {
                    state = InternalState.OPENING;
                    logger.debug("Create File name:" + name);
                    ArrayList<Command> commands = new ArrayList<Command>();
                    ArrayList<Command> postCommitCommands = new ArrayList<Command>();
                    ArrayList<Command> postErrorCommands = new ArrayList<Command>();
                    commands.add(new CreateFileCommand(c.getName(), c.getRootNodeRef(), c.getPath(), c.getAllocationSize(), c.isHidden()));
                    postCommitCommands.add(newOpenFileCallbackCommand());
                    postErrorCommands.add(newOpenFileErrorCallbackCommand());
                    return new CompoundCommand(commands, postCommitCommands, postErrorCommands);
                }
            } else if (operation instanceof OpenFileOperation) {
                OpenFileOperation o = (OpenFileOperation) operation;
                name = o.getName();
                if (name != null) {
                    state = InternalState.OPENING;
                    logger.debug("Open File name:" + name);
                    ArrayList<Command> commands = new ArrayList<Command>();
                    commands.add(new OpenFileCommand(o.getName(), o.getMode(), o.isTruncate(), o.getRootNodeRef(), o.getPath()));
                    ArrayList<Command> postCommitCommands = new ArrayList<Command>();
                    ArrayList<Command> postErrorCommands = new ArrayList<Command>();
                    postCommitCommands.add(newOpenFileCallbackCommand());
                    postErrorCommands.add(newOpenFileErrorCallbackCommand());
                    return new CompoundCommand(commands, postCommitCommands, postErrorCommands);
                }
            }
            // Scenario Not Started
            logger.debug("Scenario not started - no name");
            isComplete = true;
            return null;
        case OPENING:
            if (operation instanceof OpenFileOperation) {
                OpenFileOperation o = (OpenFileOperation) operation;
                if (o.getName() == null) {
                    return null;
                }
                if (name.equalsIgnoreCase(o.getName())) {
                    /**
                     * TODO What to do here - one thread is in the middle of
                     * opening a file while another tries to open the same file
                     * sleep for a bit? then check state again?  What happens if file
                     * closes while sleeping.   For now log an error.
                     */
                    logger.error("Second open while in opening state. :" + name);
                // isComplete = true;
                // return null;
                }
            }
            /**
             * Anti-pattern : timeout - is this needed ?
             */
            Date now = new Date();
            if (now.getTime() > startTime.getTime() + getTimeout()) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Instance in OPENING STATE timed out name" + name);
                }
                isComplete = true;
            }
            return null;
        case ERROR:
            logger.debug("Open has failed :" + name);
            isComplete = true;
            return null;
        case OPEN:
            if (operation instanceof RenameFileOperation) {
                RenameFileOperation r = (RenameFileOperation) operation;
                if (r.getFrom() == null) {
                    return null;
                }
                if (name.equalsIgnoreCase(r.getFrom())) {
                    logger.warn("rename of an open file");
                }
            }
            if (operation instanceof CloseFileOperation) {
                CloseFileOperation c = (CloseFileOperation) operation;
                if (c.getName() == null) {
                    return null;
                }
                if (name.equalsIgnoreCase(c.getName())) {
                    NetworkFile file = c.getNetworkFile();
                    if (isReadOnly(file)) {
                        // Read Only File
                        if (openReadOnlyCount == 1) {
                            if (logger.isDebugEnabled()) {
                                logger.debug("Close of last read only file handle:" + this);
                            }
                            openReadOnlyCount = 0;
                            if (openReadWriteCount <= 0) {
                                if (logger.isDebugEnabled()) {
                                    logger.debug("Scenario is complete:" + this);
                                }
                                isComplete = true;
                            }
                            if (file instanceof TempNetworkFile) {
                                logger.debug("this is the last close of a temp read only file");
                                ArrayList<Command> commands = new ArrayList<Command>();
                                ArrayList<Command> postCommitCommands = new ArrayList<Command>();
                                commands.add(new CloseFileCommand(c.getName(), file, c.getRootNodeRef(), c.getPath()));
                                postCommitCommands.add(new RemoveTempFileCommand((TempNetworkFile) file));
                                return new CompoundCommand(commands, postCommitCommands);
                            } else {
                                return new CloseFileCommand(c.getName(), file, c.getRootNodeRef(), c.getPath());
                            }
                        }
                        if (logger.isDebugEnabled()) {
                            logger.debug("Only decrement count of read only file handle:" + this);
                        }
                        openReadOnlyCount--;
                        return new DoNothingCommand();
                    } else {
                        // Read Only File
                        if (openReadWriteCount == 1) {
                            if (logger.isDebugEnabled()) {
                                logger.debug("Close of last read write file handle:" + this);
                            }
                            openReadWriteCount = 0;
                            if (openReadOnlyCount <= 0) {
                                if (logger.isDebugEnabled()) {
                                    logger.debug("Scenario is complete:" + this);
                                }
                                isComplete = true;
                            }
                            // 
                            ArrayList<Command> commands = new ArrayList<Command>();
                            ArrayList<Command> postCommitCommands = new ArrayList<Command>();
                            ArrayList<Command> postErrorCommands = new ArrayList<Command>();
                            commands.add(new CloseFileCommand(c.getName(), file, c.getRootNodeRef(), c.getPath()));
                            if (c.isDeleteOnClose()) {
                                postCommitCommands.add(new ReduceQuotaCommand(c.getName(), file, c.getRootNodeRef(), c.getPath()));
                            }
                            if (file instanceof TempNetworkFile) {
                                postCommitCommands.add(new RemoveTempFileCommand((TempNetworkFile) file));
                            }
                            return new CompoundCommand(commands, postCommitCommands, postErrorCommands);
                        }
                        if (logger.isDebugEnabled()) {
                            logger.debug("Only decrement count of read write file handle:" + this);
                        }
                        openReadWriteCount--;
                        return new DoNothingCommand();
                    }
                }
            } else if (operation instanceof OpenFileOperation) {
                OpenFileOperation o = (OpenFileOperation) operation;
                if (o.getName() == null) {
                    return null;
                }
                if (name != null && name.equalsIgnoreCase(o.getName())) {
                    if (o.getMode() == OpenFileMode.READ_WRITE) {
                        // This is an open of a read write access
                        if (openReadWriteCount == 0) {
                            logger.debug("Open first read/write from scenario:" + this);
                            ArrayList<Command> commands = new ArrayList<Command>();
                            commands.add(new OpenFileCommand(o.getName(), o.getMode(), o.isTruncate(), o.getRootNodeRef(), o.getPath()));
                            ArrayList<Command> postCommitCommands = new ArrayList<Command>();
                            postCommitCommands.add(newOpenFileCallbackCommand());
                            return new CompoundCommand(commands, postCommitCommands);
                        } else {
                            // TODO Need a permission check here and increment post check
                            openReadWriteCount++;
                            logger.debug("Return already open read/write file handle from scenario:" + this);
                            return new ReturnValueCommand(fileHandleReadWrite);
                        }
                    } else {
                        if (openReadWriteCount > 0) {
                            // however the file is already open for read/write
                            openReadWriteCount++;
                            logger.debug("Return already open read/write file handle from scenario:" + this);
                            return new ReturnValueCommand(fileHandleReadWrite);
                        }
                        if (openReadOnlyCount == 0) {
                            logger.debug("Open first read only from scenario:" + this);
                            ArrayList<Command> commands = new ArrayList<Command>();
                            commands.add(new OpenFileCommand(o.getName(), o.getMode(), o.isTruncate(), o.getRootNodeRef(), o.getPath()));
                            ArrayList<Command> postCommitCommands = new ArrayList<Command>();
                            postCommitCommands.add(newOpenFileCallbackCommand());
                            return new CompoundCommand(commands, postCommitCommands);
                        } else {
                            openReadOnlyCount++;
                            logger.debug("Return already open only file handle from scenario:" + this);
                            return new ReturnValueCommand(fileHandleReadOnly);
                        }
                    }
                }
            }
            break;
    }
    return null;
}