org.apache.hadoop.security

类 SaslInputStream

java.lang.Object

java.io.InputStream

org.apache.hadoop.security.SaslInputStream

所有已实现的接口:

Closeable, AutoCloseable

public class SaslInputStream
extends InputStream

A SaslInputStream is composed of an InputStream and a SaslServer (or SaslClient) so that read() methods return data that are read in from the underlying InputStream but have been additionally processed by the SaslServer (or SaslClient) object. The SaslServer (or SaslClient) object must be fully initialized before being used by a SaslInputStream.

字段概要

字段

限定符和类型	字段和说明
static org.apache.commons.logging.Log	LOG

构造器概要

构造器

构造器和说明
SaslInputStream(InputStream inStream, SaslClient saslClient) Constructs a SASLInputStream from an InputStream and a SaslClient Note: if the specified InputStream or SaslClient is null, a NullPointerException may be thrown later when they are used.
SaslInputStream(InputStream inStream, SaslServer saslServer) Constructs a SASLInputStream from an InputStream and a SaslServer Note: if the specified InputStream or SaslServer is null, a NullPointerException may be thrown later when they are used.

方法概要

方法

限定符和类型	方法和说明
int	available() Returns the number of bytes that can be read from this input stream without blocking.
void	close() Closes this input stream and releases any system resources associated with the stream.
boolean	markSupported() Tests if this input stream supports the mark and reset methods, which it does not.
int	read() Reads the next byte of data from this input stream.
int	read(byte[] b) Reads up to b.length bytes of data from this input stream into an array of bytes.
int	read(byte[] b, int off, int len) Reads up to len bytes of data from this input stream into an array of bytes.
long	skip(long n) Skips n bytes of input from the bytes that can be read from this input stream without blocking.

从类继承的方法 java.io.InputStream

mark, reset

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

LOG

public static final org.apache.commons.logging.Log LOG

构造器详细资料

SaslInputStream

public SaslInputStream(InputStream inStream,
               SaslServer saslServer)

Constructs a SASLInputStream from an InputStream and a SaslServer
Note: if the specified InputStream or SaslServer is null, a NullPointerException may be thrown later when they are used.

参数:

inStream - the InputStream to be processed

saslServer - an initialized SaslServer object

SaslInputStream

public SaslInputStream(InputStream inStream,
               SaslClient saslClient)

Constructs a SASLInputStream from an InputStream and a SaslClient
Note: if the specified InputStream or SaslClient is null, a NullPointerException may be thrown later when they are used.

参数:

inStream - the InputStream to be processed

saslClient - an initialized SaslClient object

方法详细资料

read

public int read()
         throws IOException

Reads the next byte of data from this input stream. The value byte is returned as an int in the range 0 to 255. If no byte is available because the end of the stream has been reached, the value -1 is returned. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.

指定者:

read 在类中 InputStream

返回:

the next byte of data, or -1 if the end of the stream is reached.

抛出:

IOException - if an I/O error occurs.

read

public int read(byte[] b)
         throws IOException

Reads up to b.length bytes of data from this input stream into an array of bytes.

The read method of InputStream calls the read method of three arguments with the arguments b, 0, and b.length.

覆盖:

read 在类中 InputStream

参数:

b - the buffer into which the data is read.

返回:

the total number of bytes read into the buffer, or -1 is there is no more data because the end of the stream has been reached.

抛出:

IOException - if an I/O error occurs.

read

public int read(byte[] b,
       int off,
       int len)
         throws IOException

Reads up to len bytes of data from this input stream into an array of bytes. This method blocks until some input is available. If the first argument is null, up to len bytes are read and discarded.

覆盖:

read 在类中 InputStream

参数:

b - the buffer into which the data is read.

off - the start offset of the data.

len - the maximum number of bytes read.

返回:

the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.

抛出:

IOException - if an I/O error occurs.

skip

public long skip(long n)
          throws IOException

Skips n bytes of input from the bytes that can be read from this input stream without blocking.

Fewer bytes than requested might be skipped. The actual number of bytes skipped is equal to n or the result of a call to available, whichever is smaller. If n is less than zero, no bytes are skipped.

The actual number of bytes skipped is returned.

覆盖:

skip 在类中 InputStream

参数:

n - the number of bytes to be skipped.

返回:

the actual number of bytes skipped.

抛出:

IOException - if an I/O error occurs.

available

public int available()
              throws IOException

Returns the number of bytes that can be read from this input stream without blocking. The available method of InputStream returns 0. This method should be overridden by subclasses.

覆盖:

available 在类中 InputStream

返回:

the number of bytes that can be read from this input stream without blocking.

抛出:

IOException - if an I/O error occurs.

close

public void close()
           throws IOException

Closes this input stream and releases any system resources associated with the stream.

The close method of SASLInputStream calls the close method of its underlying input stream.

指定者:

close 在接口中 Closeable

指定者:

close 在接口中 AutoCloseable

覆盖:

close 在类中 InputStream

抛出:

IOException - if an I/O error occurs.

markSupported

public boolean markSupported()

Tests if this input stream supports the mark and reset methods, which it does not.

覆盖:

markSupported 在类中 InputStream

返回:

false, since this class does not support the mark and reset methods.