org.eclipse.jetty.util

Class RolloverFileOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

org.eclipse.jetty.util.RolloverFileOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class RolloverFileOutputStream
extends FilterOutputStream

RolloverFileOutputStream.

This output stream puts content in a file that is rolled over every 24 hours. The filename must include the string "yyyy_mm_dd", which is replaced with the actual date when creating and rolling over the file.

Old files are retained for a number of days before being deleted.

Field Summary

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

Constructors

Constructor and Description
RolloverFileOutputStream(String filename)
RolloverFileOutputStream(String filename, boolean append)
RolloverFileOutputStream(String filename, boolean append, int retainDays)
RolloverFileOutputStream(String filename, boolean append, int retainDays, TimeZone zone)
RolloverFileOutputStream(String filename, boolean append, int retainDays, TimeZone zone, String dateFormat, String backupFormat)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
String	getDatedFilename()
String	getFilename()
int	getRetainDays()
static Calendar	toMidnight(Calendar cal) Get the "start of day" for the provided DateTime at the zone specified.
void	write(byte[] buf)
void	write(byte[] buf, int off, int len)

Methods inherited from class java.io.FilterOutputStream

flush, write

Methods inherited from class java.lang.Object

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

Constructor Detail

RolloverFileOutputStream

public RolloverFileOutputStream(String filename)
                         throws IOException

Parameters:

filename - The filename must include the string "yyyy_mm_dd", which is replaced with the actual date when creating and rolling over the file.

Throws:

IOException - if unable to create output

RolloverFileOutputStream

public RolloverFileOutputStream(String filename,
                        boolean append)
                         throws IOException

Parameters:

filename - The filename must include the string "yyyy_mm_dd", which is replaced with the actual date when creating and rolling over the file.

append - If true, existing files will be appended to.

Throws:

IOException - if unable to create output

RolloverFileOutputStream

public RolloverFileOutputStream(String filename,
                        boolean append,
                        int retainDays)
                         throws IOException

Parameters:

filename - The filename must include the string "yyyy_mm_dd", which is replaced with the actual date when creating and rolling over the file.

append - If true, existing files will be appended to.

retainDays - The number of days to retain files before deleting them. 0 to retain forever.

Throws:

IOException - if unable to create output

RolloverFileOutputStream

public RolloverFileOutputStream(String filename,
                        boolean append,
                        int retainDays,
                        TimeZone zone)
                         throws IOException

Parameters:

filename - The filename must include the string "yyyy_mm_dd", which is replaced with the actual date when creating and rolling over the file.

append - If true, existing files will be appended to.

retainDays - The number of days to retain files before deleting them. 0 to retain forever.

zone - the timezone for the output

Throws:

IOException - if unable to create output

RolloverFileOutputStream

public RolloverFileOutputStream(String filename,
                        boolean append,
                        int retainDays,
                        TimeZone zone,
                        String dateFormat,
                        String backupFormat)
                         throws IOException

Parameters:

filename - The filename must include the string "yyyy_mm_dd", which is replaced with the actual date when creating and rolling over the file.

append - If true, existing files will be appended to.

retainDays - The number of days to retain files before deleting them. 0 to retain forever.

zone - the timezone for the output

dateFormat - The format for the date file substitution. The default is "yyyy_MM_dd".

backupFormat - The format for the file extension of backup files. The default is "HHmmssSSS".

Throws:

IOException - if unable to create output

Method Detail

toMidnight

public static Calendar toMidnight(Calendar cal)

Get the "start of day" for the provided DateTime at the zone specified.

Parameters:

cal - the date time to calculate from

Returns:

start of the day of the date provided

getFilename

public String getFilename()

getDatedFilename

public String getDatedFilename()

getRetainDays

public int getRetainDays()

write

public void write(byte[] buf)
           throws IOException

Overrides:

write in class FilterOutputStream

Throws:

IOException

write

public void write(byte[] buf,
         int off,
         int len)
           throws IOException

Overrides:

write in class FilterOutputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class FilterOutputStream

Throws:

IOException