org.apache.ratis.util

类 AtomicFileOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

org.apache.ratis.util.AtomicFileOutputStream

所有已实现的接口:

Closeable, Flushable, AutoCloseable

public class AtomicFileOutputStream
extends FilterOutputStream

A FilterOutputStream that writes to a file atomically. The output file will not show up until it has been entirely written and sync'ed to disk. It uses a temporary file when it is being written. The default temporary file has a .tmp suffix. When the output stream is closed, it is (1) flushed (2) sync'ed, and (3) renamed/moved from the temporary file to the output file. If the output file already exists, it will be overwritten. NOTE that on Windows platforms, the output file, if it exists, is deleted before the temporary file is moved.

字段概要

字段

限定符和类型	字段和说明
static String	TMP_EXTENSION

从类继承的字段 java.io.FilterOutputStream

out

构造器概要

构造器

构造器和说明
AtomicFileOutputStream(File outFile)
AtomicFileOutputStream(File outFile, File tmpFile)

方法概要

限定符和类型	方法和说明
void	abort() Close the atomic file, but do not "commit" the temporary file on top of the destination.
void	close()
static File	getTemporaryFile(File outFile)
boolean	isClosed()

从类继承的方法 java.io.FilterOutputStream

flush, write, write, write

从类继承的方法 java.lang.Object

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

字段详细资料

TMP_EXTENSION

public static final String TMP_EXTENSION

另请参阅:

常量字段值

构造器详细资料

AtomicFileOutputStream

public AtomicFileOutputStream(File outFile)
                       throws FileNotFoundException

抛出:

FileNotFoundException

AtomicFileOutputStream

public AtomicFileOutputStream(File outFile,
                              File tmpFile)
                       throws FileNotFoundException

抛出:

FileNotFoundException

方法详细资料

getTemporaryFile

public static File getTemporaryFile(File outFile)

isClosed

public boolean isClosed()

close

public void close()
           throws IOException

指定者:

close 在接口中 Closeable

指定者:

close 在接口中 AutoCloseable

覆盖:

close 在类中 FilterOutputStream

抛出:

IOException

abort

public void abort()

Close the atomic file, but do not "commit" the temporary file on top of the destination. This should be used if there is a failure in writing.