com.alipay.sofa.jraft.storage.io

类 LocalDirReader

java.lang.Object

com.alipay.sofa.jraft.storage.io.LocalDirReader

所有已实现的接口:

FileReader

直接已知子类:

SnapshotFileReader

public class LocalDirReader
extends Object
implements FileReader

Read a file data form local dir by fileName.

作者:

boyan (boyan@alibaba-inc.com) 2018-Apr-06 9:25:12 PM

字段概要

从接口继承的字段 com.alipay.sofa.jraft.storage.io.FileReader

EOF

构造器概要

构造器

构造器和说明
LocalDirReader(String path)

方法概要

限定符和类型	方法和说明
String	getPath() Get the file path.
int	readFile(ByteBufferCollector buf, String fileName, long offset, long maxCount) Read file into buf starts from offset at most maxCount.
protected int	readFileWithMeta(ByteBufferCollector buf, String fileName, com.google.protobuf.Message fileMeta, long offset, long maxCount)

从类继承的方法 java.lang.Object

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

构造器详细资料

LocalDirReader

public LocalDirReader(String path)

方法详细资料

getPath

public String getPath()

从接口复制的说明: FileReader

Get the file path.

指定者:

getPath 在接口中 FileReader

返回:

path of the file

readFile

public int readFile(ByteBufferCollector buf,
                    String fileName,
                    long offset,
                    long maxCount)
             throws IOException,
                    RetryAgainException

从接口复制的说明: FileReader

Read file into buf starts from offset at most maxCount.

指定者:

readFile 在接口中 FileReader

参数:

buf - read bytes into this buf

fileName - file name

offset - the offset of file

maxCount - max read bytes

返回:

-1 if reaches end, else return read count.

抛出:

IOException - if some I/O error occurs

RetryAgainException - if it's not allowed to read partly or it's allowed but throughput is throttled to 0, try again.

readFileWithMeta

protected int readFileWithMeta(ByteBufferCollector buf,
                               String fileName,
                               com.google.protobuf.Message fileMeta,
                               long offset,
                               long maxCount)
                        throws IOException,
                               RetryAgainException

抛出:

IOException

RetryAgainException