Mercurial > hg > blitz_condensed
diff src/com/go/trove/log/FileLogStreamFactory.java @ 0:3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 21 Mar 2009 11:00:06 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/com/go/trove/log/FileLogStreamFactory.java Sat Mar 21 11:00:06 2009 +0000 @@ -0,0 +1,132 @@ +/* ==================================================================== + * Trove - Copyright (c) 1997-2000 Walt Disney Internet Group + * ==================================================================== + * The Tea Software License, Version 1.1 + * + * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The end-user documentation included with the redistribution, + * if any, must include the following acknowledgment: + * "This product includes software developed by the + * Walt Disney Internet Group (http://opensource.go.com/)." + * Alternately, this acknowledgment may appear in the software itself, + * if and wherever such third-party acknowledgments normally appear. + * + * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must + * not be used to endorse or promote products derived from this + * software without prior written permission. For written + * permission, please contact opensource@dig.com. + * + * 5. Products derived from this software may not be called "Tea", + * "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet", + * "Kettle", "Trove" or "BeanDoc" appear in their name, without prior + * written permission of the Walt Disney Internet Group. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * For more information about Tea, please see http://opensource.go.com/. + */ + +package com.go.trove.log; + +import java.io.*; +import java.util.*; +import java.text.*; + +/****************************************************************************** + * Opens up files to be used by an {@link IntervalLogStream}. + * + * @author Brian S O'Neill + * @version + * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 9/07/00 <!-- $--> + */ +public class FileLogStreamFactory implements IntervalLogStream.Factory { + private File mDirectory; + private DateFormat mDateFormat; + private String mExtension; + + /** + * Creates log files in the given directory. The names are created by + * appending the name of the directory, a hyphen, a time stamp and + * an extension. + * + * For example, if the directory is "/logs/MyApp", the format is + * "yyyyMMdd", and the extension is ".log", then a generated file might be: + * "/logs/MyApp/MyApp-19990608.log". + * + * @param directory Directory to create log files in. + * @param format DateFormat to use for creating new file names. + * @param extension Extension to put at the end of new file name. + */ + public FileLogStreamFactory(File directory, + DateFormat format, + String extension) { + + if (directory == null) { + throw new NullPointerException + ("FileLogStreamFactory directory not specified"); + } + + try { + mDirectory = new File(directory.getCanonicalPath()); + } + catch (IOException e) { + mDirectory = directory; + } + + if (format == null) { + throw new NullPointerException + ("FileLogStreamFactory date format not specified"); + } + + mDateFormat = format; + + if (extension == null) { + mExtension = ""; + } + else { + mExtension = extension; + } + } + + public OutputStream openOutputStream(Date date) throws IOException { + if (!mDirectory.exists()) { + if (!mDirectory.mkdirs()) { + throw new IOException("Unable to create directory: \"" + + mDirectory + '"'); + } + } + + String fileName = mDirectory.getName() + '-'; + synchronized (mDateFormat) { + fileName += mDateFormat.format(date); + } + + File file = new File(mDirectory, fileName + mExtension); + return new FileOutputStream(file.getPath(), true); + } +} +