org.apache.logging.log4j.core.appender

Class FileManager

java.lang.Object

org.apache.logging.log4j.core.appender.AbstractManager

org.apache.logging.log4j.core.appender.OutputStreamManager

org.apache.logging.log4j.core.appender.FileManager

All Implemented Interfaces:

java.lang.AutoCloseable, ByteBufferDestination

Direct Known Subclasses:

RollingFileManager

public class FileManager
extends OutputStreamManager

Manages actual File I/O for File Appenders.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	FileManager.FactoryData Factory Data.
private static class	FileManager.FileManagerFactory Factory to create a FileManager.

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.String	advertiseURI
private int	bufferSize
private boolean	createOnDemand
private static FileManager.FileManagerFactory	FACTORY
private boolean	isAppend
private boolean	isLocking

Fields inherited from class org.apache.logging.log4j.core.appender.OutputStreamManager

byteBuffer, layout

Fields inherited from class org.apache.logging.log4j.core.appender.AbstractManager

count, LOGGER

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	FileManager(LoggerContext loggerContext, java.lang.String fileName, java.io.OutputStream os, boolean append, boolean locking, boolean createOnDemand, java.lang.String advertiseURI, Layout<? extends java.io.Serializable> layout, boolean writeHeader, java.nio.ByteBuffer buffer)
protected	FileManager(java.lang.String fileName, java.io.OutputStream os, boolean append, boolean locking, java.lang.String advertiseURI, Layout<? extends java.io.Serializable> layout, boolean writeHeader, java.nio.ByteBuffer buffer) Deprecated.
protected	FileManager(java.lang.String fileName, java.io.OutputStream os, boolean append, boolean locking, java.lang.String advertiseURI, Layout<? extends java.io.Serializable> layout, int bufferSize, boolean writeHeader) Deprecated.

Method Summary

Modifier and Type	Method and Description
protected java.io.OutputStream	createOutputStream()
int	getBufferSize() Returns the buffer size to use if the appender was configured with BufferedIO=true, otherwise returns a negative number.
java.util.Map<java.lang.String,java.lang.String>	getContentFormat() FileManager's content format is specified by: Key: "fileURI" Value: provided "advertiseURI" param.
static FileManager	getFileManager(java.lang.String fileName, boolean append, boolean locking, boolean bufferedIo, boolean createOnDemand, java.lang.String advertiseUri, Layout<? extends java.io.Serializable> layout, int bufferSize, Configuration configuration) Returns the FileManager.
java.lang.String	getFileName() Returns the name of the File being managed.
boolean	isAppend() Returns the append status.
boolean	isCreateOnDemand() Returns the lazy-create.
boolean	isLocking() Returns the lock status.
protected void	write(byte[] bytes, int offset, int length, boolean immediateFlush) Some output streams synchronize writes while others do not.
protected void	writeToDestination(byte[] bytes, int offset, int length) Overrides OutputStreamManager.writeToDestination(byte[], int, int) to add support for file locking.

Methods inherited from class org.apache.logging.log4j.core.appender.OutputStreamManager

closeOutputStream, drain, flush, flushBuffer, flushDestination, getByteBuffer, getManager, getOutputStream, hasOutputStream, isOpen, releaseSub, setOutputStream, skipFooter, write, write, write, writeFooter

Methods inherited from class org.apache.logging.log4j.core.appender.AbstractManager

close, getCount, getLoggerContext, getName, hasManager, log, logDebug, logError, logWarn, release, stop, updateData

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

FACTORY

private static final FileManager.FileManagerFactory FACTORY

isAppend

private final boolean isAppend

createOnDemand

private final boolean createOnDemand

isLocking

private final boolean isLocking

advertiseURI

private final java.lang.String advertiseURI

bufferSize

private final int bufferSize

Constructor Detail

FileManager

@Deprecated
protected FileManager(java.lang.String fileName,
                                  java.io.OutputStream os,
                                  boolean append,
                                  boolean locking,
                                  java.lang.String advertiseURI,
                                  Layout<? extends java.io.Serializable> layout,
                                  int bufferSize,
                                  boolean writeHeader)

Deprecated.

FileManager

@Deprecated
protected FileManager(java.lang.String fileName,
                                  java.io.OutputStream os,
                                  boolean append,
                                  boolean locking,
                                  java.lang.String advertiseURI,
                                  Layout<? extends java.io.Serializable> layout,
                                  boolean writeHeader,
                                  java.nio.ByteBuffer buffer)

Deprecated.

Since:

2.6

FileManager

protected FileManager(LoggerContext loggerContext,
                      java.lang.String fileName,
                      java.io.OutputStream os,
                      boolean append,
                      boolean locking,
                      boolean createOnDemand,
                      java.lang.String advertiseURI,
                      Layout<? extends java.io.Serializable> layout,
                      boolean writeHeader,
                      java.nio.ByteBuffer buffer)

Since:

2.7

Method Detail

getFileManager

public static FileManager getFileManager(java.lang.String fileName,
                                         boolean append,
                                         boolean locking,
                                         boolean bufferedIo,
                                         boolean createOnDemand,
                                         java.lang.String advertiseUri,
                                         Layout<? extends java.io.Serializable> layout,
                                         int bufferSize,
                                         Configuration configuration)

Returns the FileManager.

Parameters:

fileName - The name of the file to manage.

append - true if the file should be appended to, false if it should be overwritten.

locking - true if the file should be locked while writing, false otherwise.

bufferedIo - true if the contents should be buffered as they are written.

createOnDemand - true if you want to lazy-create the file (a.k.a. on-demand.)

advertiseUri - the URI to use when advertising the file

layout - The layout

bufferSize - buffer size for buffered IO

configuration - The configuration.

Returns:

A FileManager for the File.

createOutputStream

protected java.io.OutputStream createOutputStream()
                                           throws java.io.FileNotFoundException

Overrides:

createOutputStream in class OutputStreamManager

Throws:

java.io.FileNotFoundException

write

protected void write(byte[] bytes,
                     int offset,
                     int length,
                     boolean immediateFlush)

Description copied from class: OutputStreamManager

Some output streams synchronize writes while others do not. Synchronizing here insures that log events won't be intertwined.

Overrides:

write in class OutputStreamManager

Parameters:

bytes - The serialized Log event.

offset - The offset into the byte array.

length - The number of bytes to write.

immediateFlush - flushes immediately after writing.

writeToDestination

protected void writeToDestination(byte[] bytes,
                                  int offset,
                                  int length)

Overrides OutputStreamManager.writeToDestination(byte[], int, int) to add support for file locking.

Overrides:

writeToDestination in class OutputStreamManager

Parameters:

bytes - the array containing data

offset - from where to write

length - how many bytes to write

Since:

2.8

getFileName

public java.lang.String getFileName()

Returns the name of the File being managed.

Returns:

The name of the File being managed.

isAppend

public boolean isAppend()

Returns the append status.

Returns:

true if the file will be appended to, false if it is overwritten.

isCreateOnDemand

public boolean isCreateOnDemand()

Returns the lazy-create.

Returns:

true if the file will be lazy-created.

isLocking

public boolean isLocking()

Returns the lock status.

Returns:

true if the file will be locked when writing, false otherwise.

getBufferSize

public int getBufferSize()

Returns the buffer size to use if the appender was configured with BufferedIO=true, otherwise returns a negative number.

Returns:

the buffer size, or a negative number if the output stream is not buffered

getContentFormat

public java.util.Map<java.lang.String,java.lang.String> getContentFormat()

FileManager's content format is specified by: Key: "fileURI" Value: provided "advertiseURI" param.

Overrides:

getContentFormat in class AbstractManager

Returns:

Map of content format keys supporting FileManager