net.wicp.tams.common.binlog.parser

类 LogFetcher

java.lang.Object

net.wicp.tams.common.binlog.parser.LogBuffer

net.wicp.tams.common.binlog.parser.LogFetcher

所有已实现的接口:

Closeable, AutoCloseable

直接已知子类:

DirectLogFetcher, FileLogFetcher

public abstract class LogFetcher
extends LogBuffer
implements Closeable

Declaration a binary-log fetcher. It extends from LogBuffer.

 LogFetcher fetcher = new SomeLogFetcher();
 ...
 
 while (fetcher.fetch())
 {
     LogEvent event;
     do
     {
         event = decoder.decode(fetcher, context);
 
         // process log event.
     }
     while (event != null);
 }
 // no more binlog.
 fetcher.close();
 

版本:

1.0

作者:

Changyuan.lh

字段概要

字段

限定符和类型	字段和说明
static int	BIN_LOG_HEADER_SIZE Binlog file header size
static float	DEFAULT_GROWTH_FACTOR Default growth factor.
static int	DEFAULT_INITIAL_CAPACITY Default initial capacity.
protected float	factor

从类继承的字段 net.wicp.tams.common.binlog.parser.LogBuffer

BIGINT_MAX_VALUE, buffer, DIG_BASE, DIG_MAX, DIG_PER_DEC1, DIG_PER_INT32, dig2bytes, ISO_8859_1, limit, NULL_LENGTH, origin, position, powers10, SIZE_OF_INT32

构造器概要

构造器

构造器和说明
LogFetcher()
LogFetcher(int initialCapacity)
LogFetcher(int initialCapacity, float growthFactor)

方法概要

方法

限定符和类型	方法和说明
abstract void	close()
protected void	ensureCapacity(int minCapacity) Increases the capacity of this LogFetcher instance, if necessary, to ensure that it can hold at least the number of elements specified by the minimum capacity argument.
abstract boolean	fetch() Fetches the next frame of binary-log, and fill it in buffer.

从类继承的方法 net.wicp.tams.common.binlog.parser.LogBuffer

capacity, consume, duplicate, duplicate, duplicate, fillBitmap, fillBitmap, fillBytes, fillBytes, fillOutput, fillOutput, forward, getBeInt16, getBeInt16, getBeInt24, getBeInt24, getBeInt32, getBeInt32, getBeLong48, getBeLong48, getBeLong64, getBeLong64, getBeUint16, getBeUint16, getBeUint24, getBeUint24, getBeUint32, getBeUint32, getBeUlong40, getBeUlong40, getBeUlong48, getBeUlong48, getBeUlong56, getBeUlong56, getBeUlong64, getBeUlong64, getBitmap, getBitmap, getData, getData, getData, getDecimal, getDecimal, getDouble64, getDouble64, getFixString, getFixString, getFixString, getFixString, getFloat32, getFloat32, getFullString, getFullString, getInt16, getInt16, getInt24, getInt24, getInt32, getInt32, getInt8, getInt8, getLong48, getLong48, getLong64, getLong64, getPackedLong, getPackedLong, getString, getString, getString, getString, getUint16, getUint16, getUint24, getUint24, getUint32, getUint32, getUint8, getUint8, getUlong40, getUlong40, getUlong48, getUlong48, getUlong56, getUlong56, getUlong64, getUlong64, hasRemaining, hexdump, hexdump, limit, limit, position, position, remaining, rewind

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

DEFAULT_INITIAL_CAPACITY

public static final int DEFAULT_INITIAL_CAPACITY

Default initial capacity.

另请参阅:

常量字段值

DEFAULT_GROWTH_FACTOR

public static final float DEFAULT_GROWTH_FACTOR

Default growth factor.

另请参阅:

常量字段值

BIN_LOG_HEADER_SIZE

public static final int BIN_LOG_HEADER_SIZE

Binlog file header size

另请参阅:

常量字段值

factor

protected final float factor

构造器详细资料

LogFetcher

public LogFetcher()

LogFetcher

public LogFetcher(int initialCapacity)

LogFetcher

public LogFetcher(int initialCapacity,
          float growthFactor)

方法详细资料

ensureCapacity

protected final void ensureCapacity(int minCapacity)

Increases the capacity of this LogFetcher instance, if necessary, to ensure that it can hold at least the number of elements specified by the minimum capacity argument.

参数:

minCapacity - the desired minimum capacity

fetch

public abstract boolean fetch()
                       throws IOException

Fetches the next frame of binary-log, and fill it in buffer.

抛出:

IOException

close

public abstract void close()
                    throws IOException

指定者:

close 在接口中 Closeable

指定者:

close 在接口中 AutoCloseable

抛出:

IOException

另请参阅:

Closeable.close()