public class RolloverFileOutputStream extends OutputStream
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.
Constructor and Description |
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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) |
Modifier and Type | Method and Description |
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void |
close() |
void |
flush() |
String |
getDatedFilename() |
String |
getFilename() |
int |
getRetainDays() |
static ZonedDateTime |
toMidnight(ZonedDateTime now)
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) |
void |
write(int b) |
public RolloverFileOutputStream(String filename) throws IOException
filename
- The filename must include the string "yyyy_mm_dd",
which is replaced with the actual date when creating and rolling over the file.IOException
- if unable to create outputpublic RolloverFileOutputStream(String filename, boolean append) throws IOException
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.IOException
- if unable to create outputpublic RolloverFileOutputStream(String filename, boolean append, int retainDays) throws IOException
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.IOException
- if unable to create outputpublic RolloverFileOutputStream(String filename, boolean append, int retainDays, TimeZone zone) throws IOException
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 outputIOException
- if unable to create outputpublic RolloverFileOutputStream(String filename, boolean append, int retainDays, TimeZone zone, String dateFormat, String backupFormat) throws IOException
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 outputdateFormat
- The format for the date file substitution. The default is "yyyy_MM_dd". If set to the
empty string, the file is rolledover to the same filename, with the current file being renamed to the backup filename.backupFormat
- The format for the file extension of backup files. The default is "HHmmssSSS".IOException
- if unable to create outputpublic static ZonedDateTime toMidnight(ZonedDateTime now)
now
- the date time to calculate frompublic String getFilename()
public String getDatedFilename()
public int getRetainDays()
public void write(int b) throws IOException
write
in class OutputStream
IOException
public void write(byte[] buf) throws IOException
write
in class OutputStream
IOException
public void write(byte[] buf, int off, int len) throws IOException
write
in class OutputStream
IOException
public void flush() throws IOException
flush
in interface Flushable
flush
in class OutputStream
IOException
public void close() throws IOException
close
in interface Closeable
close
in interface AutoCloseable
close
in class OutputStream
IOException
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