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org.smallmind.scribe.pen.FileAppender Maven / Gradle / Ivy
/*
* Copyright (c) 2007 through 2024 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License or Apache License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* and the Apache License along with the SmallMind Code Project. If not, see
* .
*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
* alone subject to any of the requirements of the GNU Affero GPL
* version 3.
*/
package org.smallmind.scribe.pen;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import java.util.Date;
public class FileAppender extends AbstractFormattedAppender {
private OutputStream outputStream;
private Path logPath;
private Cleanup cleanup;
private Rollover rollover;
private boolean closed = false;
private long fileSize = 0;
private long lastModified = 0;
public FileAppender () {
super();
}
public FileAppender (String logFile)
throws IOException {
this(Paths.get(logFile), null, null, null, null);
}
public FileAppender (Path logPath)
throws IOException {
this(logPath, null, null, null, null);
}
public FileAppender (String logFile, Rollover rollover)
throws IOException {
this(Paths.get(logFile), rollover, null, null, null);
}
public FileAppender (Path logPath, Rollover rollover)
throws IOException {
this(logPath, rollover, null, null, null);
}
public FileAppender (String logFile, Cleanup cleanup)
throws IOException {
this(Paths.get(logFile), null, cleanup, null, null);
}
public FileAppender (Path logPath, Cleanup cleanup)
throws IOException {
this(logPath, null, cleanup, null, null);
}
public FileAppender (String logFile, Formatter formatter)
throws IOException {
this(Paths.get(logFile), null, null, formatter, null);
}
public FileAppender (Path logPath, Formatter formatter)
throws IOException {
this(logPath, null, null, formatter, null);
}
public FileAppender (String logFile, Rollover rollover, Formatter formatter)
throws IOException {
this(Paths.get(logFile), rollover, null, formatter, null);
}
public FileAppender (Path logPath, Rollover rollover, Formatter formatter)
throws IOException {
this(logPath, rollover, null, formatter, null);
}
public FileAppender (String logFile, Cleanup cleanup, Formatter formatter)
throws IOException {
this(Paths.get(logFile), null, cleanup, formatter, null);
}
public FileAppender (Path logPath, Cleanup cleanup, Formatter formatter)
throws IOException {
this(logPath, null, cleanup, formatter, null);
}
public FileAppender (String logFile, Formatter formatter, ErrorHandler errorHandler)
throws IOException {
this(Paths.get(logFile), null, null, formatter, errorHandler);
}
public FileAppender (Path logPath, Formatter formatter, ErrorHandler errorHandler)
throws IOException {
this(logPath, null, null, formatter, errorHandler);
}
public FileAppender (String logFile, Rollover rollover, Formatter formatter, ErrorHandler errorHandler)
throws IOException {
this(Paths.get(logFile), rollover, null, formatter, errorHandler);
}
public FileAppender (Path logPath, Rollover rollover, Formatter formatter, ErrorHandler errorHandler)
throws IOException {
this(logPath, rollover, null, formatter, errorHandler);
}
public FileAppender (String logFile, Cleanup cleanup, Formatter formatter, ErrorHandler errorHandler)
throws IOException {
this(Paths.get(logFile), null, cleanup, formatter, errorHandler);
}
public FileAppender (Path logPath, Cleanup cleanup, Formatter formatter, ErrorHandler errorHandler)
throws IOException {
this(logPath, null, cleanup, formatter, errorHandler);
}
public FileAppender (String logFile, Rollover rollover, Cleanup cleanup, Formatter formatter, ErrorHandler errorHandler)
throws IOException {
this(Paths.get(logFile), rollover, cleanup, formatter, errorHandler);
}
public FileAppender (Path logPath, Rollover rollover, Cleanup cleanup, Formatter formatter, ErrorHandler errorHandler)
throws IOException {
super(formatter, errorHandler);
this.rollover = rollover;
this.cleanup = cleanup;
setLogPath(logPath);
}
public Rollover getRollover () {
return rollover;
}
public void setRollover (Rollover rollover) {
this.rollover = rollover;
}
public Cleanup getCleanup () {
return cleanup;
}
public void setCleanup (Cleanup cleanup) {
this.cleanup = cleanup;
}
public Path getLogPath () {
return logPath;
}
public void setLogPath (Path logPath)
throws IOException {
this.logPath = logPath;
if (Files.isDirectory(logPath)) {
throw new IOException("File must specify a non-directory path(" + logPath.toAbsolutePath() + ")");
} else {
Path parentPath;
if ((parentPath = logPath.getParent()) != null) {
Files.createDirectories(parentPath);
}
openStream();
}
}
public void setLogFile (String logFile)
throws IOException {
setLogPath(Paths.get(logFile));
}
private void openStream ()
throws IOException {
outputStream = Files.newOutputStream(logPath, StandardOpenOption.CREATE, StandardOpenOption.APPEND);
lastModified = Files.getLastModifiedTime(logPath).toMillis();
fileSize = 0;
}
public synchronized void handleOutput (String formattedOutput)
throws LoggerException {
byte[] formattedBytes = formattedOutput.getBytes(StandardCharsets.UTF_8);
if (closed) {
throw new LoggerException("Appender to file(%s) has been previously closed", logPath.toAbsolutePath());
}
if (outputStream != null) {
if ((rollover != null) && rollover.willRollover(fileSize, lastModified, formattedBytes.length)) {
Path rolloverPath = FileNameUtility.calculateUniquePath(logPath, rollover.getSeparator(), rollover.getTimestampSuffix(new Date()), true);
try {
outputStream.close();
} catch (IOException ioException) {
throw new LoggerException(ioException, "Unable to close the current log file(%s)", logPath.toAbsolutePath());
}
try {
Files.move(logPath, rolloverPath);
} catch (IOException ioException) {
throw new LoggerException(ioException, "Could not rollover the log file to the archive name(%s)", rolloverPath.toAbsolutePath());
}
try {
openStream();
} catch (IOException ioException) {
throw new LoggerException(ioException, "Unable to create the new log file(%s)", logPath.toAbsolutePath());
}
if (cleanup != null) {
try {
cleanup.vacuum(logPath);
} catch (IOException ioException) {
throw new LoggerException(ioException);
}
}
}
try {
outputStream.write(formattedBytes);
outputStream.flush();
fileSize += formattedBytes.length;
lastModified = System.currentTimeMillis();
} catch (IOException ioException) {
throw new LoggerException(ioException, "Error attempting to output to file(%s)", logPath.toAbsolutePath());
}
}
}
public synchronized void close ()
throws LoggerException {
if (!closed) {
closed = true;
try {
outputStream.close();
} catch (IOException ioException) {
throw new LoggerException(ioException);
}
}
}
}
