AsyncFileHandler (Apache Tomcat 8.0.53 API Documentation)

java.lang.Object
- java.util.logging.Handler
- - org.apache.juli.FileHandler
  - - org.apache.juli.AsyncFileHandler

```
public class AsyncFileHandler
extends FileHandler
```
A FileHandler implementation that uses a queue of log entries.
Configuration properties are inherited from the FileHandler class. This class does not add its own configuration properties for the logging configuration, but relies on the following system properties instead:
- org.apache.juli.AsyncOverflowDropType Default value: 1
- org.apache.juli.AsyncMaxRecordCount Default value: 10000
- org.apache.juli.AsyncLoggerPollInterval Default value: 1000
See the System Properties page in the configuration reference of Tomcat.

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

protected static class AsyncFileHandler.LogEntry

protected static class AsyncFileHandler.LoggerThread

Nested Classes
Modifier and Type	Class and Description
`protected static class`	`AsyncFileHandler.LogEntry`
`protected static class`	`AsyncFileHandler.LoggerThread`

Field Summary

Fields
Modifier and Type	Field and Description
`protected boolean`	`closed`
`static int`	`DEFAULT_MAX_RECORDS`
`protected static AsyncFileHandler.LoggerThread`	`logger`
`static int`	`LOGGER_SLEEP_TIME`
`static int`	`OVERFLOW_DROP_CURRENT`
`static int`	`OVERFLOW_DROP_FIRST`
`static int`	`OVERFLOW_DROP_FLUSH`
`static int`	`OVERFLOW_DROP_LAST`
`static int`	`OVERFLOW_DROP_TYPE`
`protected static java.util.concurrent.LinkedBlockingDeque<AsyncFileHandler.LogEntry>`	`queue`

Fields inherited from class org.apache.juli.FileHandler
DEFAULT_MAX_DAYS, writerLock

Constructor Summary

Constructors
Constructor and Description
`AsyncFileHandler()`
`AsyncFileHandler(java.lang.String directory, java.lang.String prefix, java.lang.String suffix)`
`AsyncFileHandler(java.lang.String directory, java.lang.String prefix, java.lang.String suffix, int maxDays)`

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`close()` Close the currently open log file (if any).
`protected void`	`open()` Open the new log file for the date specified by `date`.
`void`	`publish(java.util.logging.LogRecord record)` Format and publish a `LogRecord`.
`protected void`	`publishInternal(java.util.logging.LogRecord record)`

Methods inherited from class org.apache.juli.FileHandler
closeWriter, flush, openWriter

Methods inherited from class java.util.logging.Handler
getEncoding, getErrorManager, getFilter, getFormatter, getLevel, isLoggable, reportError, setEncoding, setErrorManager, setFilter, setFormatter, setLevel

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

OVERFLOW_DROP_LAST
```
public static final int OVERFLOW_DROP_LAST
```
See Also:
Constant Field Values

OVERFLOW_DROP_FIRST
```
public static final int OVERFLOW_DROP_FIRST
```
See Also:
Constant Field Values

OVERFLOW_DROP_FLUSH
```
public static final int OVERFLOW_DROP_FLUSH
```
See Also:
Constant Field Values

OVERFLOW_DROP_CURRENT
```
public static final int OVERFLOW_DROP_CURRENT
```
See Also:
Constant Field Values

OVERFLOW_DROP_TYPE

public static final int OVERFLOW_DROP_TYPE

DEFAULT_MAX_RECORDS

public static final int DEFAULT_MAX_RECORDS

LOGGER_SLEEP_TIME

public static final int LOGGER_SLEEP_TIME

queue

protected static final java.util.concurrent.LinkedBlockingDeque<AsyncFileHandler.LogEntry> queue

logger

protected static final AsyncFileHandler.LoggerThread logger

closed
```
protected volatile boolean closed
```

Constructor Detail

AsyncFileHandler
```
public AsyncFileHandler()
```

AsyncFileHandler

public AsyncFileHandler(java.lang.String directory,
                java.lang.String prefix,
                java.lang.String suffix)

AsyncFileHandler

public AsyncFileHandler(java.lang.String directory,
                java.lang.String prefix,
                java.lang.String suffix,
                int maxDays)

Method Detail
- close
```
public void close()
```
  Description copied from class: FileHandler
  
  Close the currently open log file (if any).
  
  Overrides:
  
  close in class FileHandler
- open
```
protected void open()
```
  Description copied from class: FileHandler
  
  Open the new log file for the date specified by date.
  
  Overrides:
  
  open in class FileHandler
- publish
```
public void publish(java.util.logging.LogRecord record)
```
  Description copied from class: FileHandler
  
  Format and publish a LogRecord.
  
  Overrides:
  
  publish in class FileHandler
  
  Parameters:
  record - description of the log event
- publishInternal
```
protected void publishInternal(java.util.logging.LogRecord record)
```

Class AsyncFileHandler

Nested Class Summary

Field Summary

Fields inherited from class org.apache.juli.FileHandler

Constructor Summary

Method Summary

Methods inherited from class org.apache.juli.FileHandler

Methods inherited from class java.util.logging.Handler

Methods inherited from class java.lang.Object

Field Detail

OVERFLOW_DROP_LAST

OVERFLOW_DROP_FIRST

OVERFLOW_DROP_FLUSH

OVERFLOW_DROP_CURRENT

OVERFLOW_DROP_TYPE

DEFAULT_MAX_RECORDS

LOGGER_SLEEP_TIME

queue

logger

closed

Constructor Detail

AsyncFileHandler

AsyncFileHandler

AsyncFileHandler

Method Detail

close

open

publish

publishInternal