| /* Copyright (c) 2001-2010, The HSQL Development 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: |
| * |
| * Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * |
| * 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. |
| * |
| * Neither the name of the HSQL Development Group nor the names of its |
| * contributors may be used to endorse or promote products derived from this |
| * software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS 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 HSQL DEVELOPMENT GROUP, HSQLDB.ORG, |
| * OR 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. |
| */ |
| |
| |
| package org.hsqldb.lib; |
| |
| import java.io.File; |
| import java.io.FileWriter; |
| import java.io.PrintWriter; |
| |
| import org.hsqldb.HsqlDateTime; |
| |
| /** |
| * Simple log for recording abnormal events in persistence<p> |
| * Log levels, LOG_NONE, LOG_ERROR, and LOG_NORMAL are currently supported.<p> |
| * LOG_ERROR corresponds to property value 1 and logs main database events plus |
| * any major errors encountered in operation. |
| * LOG_NORMAL corresponds to property value 2 and logs additional normal events |
| * and minor errors. |
| * |
| * @author Fred Toussi (fredt@users dot sourceforge.net) |
| * @version 1.9.0 |
| * @since 1.8.0 |
| */ |
| public class SimpleLog { |
| |
| public static final int LOG_NONE = 0; |
| public static final int LOG_ERROR = 1; |
| public static final int LOG_NORMAL = 2; |
| private PrintWriter writer; |
| private int level; |
| private boolean isSystem; |
| private String filePath; |
| |
| public SimpleLog(String path, int level) { |
| |
| this.isSystem = path == null; |
| this.filePath = path; |
| |
| setLevel(level); |
| } |
| |
| private void setupWriter() { |
| |
| if (level == LOG_NONE) { |
| close(); |
| |
| return; |
| } |
| |
| if (writer == null) { |
| if (isSystem) { |
| writer = new PrintWriter(System.out); |
| } else { |
| File file = new File(filePath); |
| |
| setupLog(file); |
| } |
| } |
| } |
| |
| private void setupLog(File file) { |
| |
| try { |
| FileUtil.getFileUtil().makeParentDirectories(file); |
| |
| writer = new PrintWriter(new FileWriter(file.getPath(), true), |
| true); |
| } catch (Exception e) { |
| isSystem = true; |
| writer = new PrintWriter(System.out); |
| } |
| } |
| |
| public int getLevel() { |
| return level; |
| } |
| |
| public void setLevel(int level) { |
| |
| this.level = level; |
| |
| setupWriter(); |
| } |
| |
| public PrintWriter getPrintWriter() { |
| return writer; |
| } |
| |
| public synchronized void sendLine(int atLevel, String message) { |
| |
| if (level >= atLevel) { |
| writer.println(HsqlDateTime.getSytemTimeString() + " " + message); |
| } |
| } |
| |
| public synchronized void logContext(int atLevel, String message) { |
| |
| if (level < atLevel) { |
| return; |
| } |
| |
| String info = HsqlDateTime.getSytemTimeString(); |
| |
| //#ifdef JAVA4 |
| Throwable temp = new Throwable(); |
| StackTraceElement[] elements = temp.getStackTrace(); |
| |
| if (elements.length > 1) { |
| info += " " + elements[1].getClassName() + "." |
| + elements[1].getMethodName(); |
| } |
| |
| //#endif JAVA4 |
| writer.println(info + " " + message); |
| } |
| |
| public synchronized void logContext(Throwable t, String inMessage) { |
| |
| String message = inMessage; // We may change this |
| |
| if (level == LOG_NONE) { |
| return; |
| } |
| |
| String info = HsqlDateTime.getSytemTimeString(); |
| |
| //#ifdef JAVA4 |
| Throwable temp = new Throwable(); |
| StackTraceElement[] elements = temp.getStackTrace(); |
| |
| if (elements.length > 1) { |
| info += " " + elements[1].getClassName() + "." |
| + elements[1].getMethodName(); |
| } |
| |
| elements = t.getStackTrace(); |
| |
| if (elements.length > 0) { |
| info += " " + elements[0].getClassName() + "." |
| + elements[0].getMethodName(); |
| } |
| |
| //#endif JAVA4 |
| if (message == null) { |
| message = ""; |
| } |
| |
| if (writer != null) { |
| writer.println(info + " " + t.toString() + " " + message); |
| } |
| } |
| |
| public void flush() { |
| |
| if (writer != null) { |
| writer.flush(); |
| } |
| } |
| |
| public void close() { |
| |
| if (writer != null && !isSystem) { |
| writer.close(); |
| } |
| |
| writer = null; |
| } |
| } |