Package com.github.ambry.router

Class ByteRanges

java.lang.Object

com.github.ambry.router.ByteRanges

public class ByteRanges
extends java.lang.Object

Method Summary

Modifier and Type	Method	Description
static ByteRange	fromLastNBytes(long lastNBytes)	Construct a range that represents the last N bytes of an object.
static ByteRange	fromOffsetRange(long startOffset, long endOffset)	Construct a range from a start offset to an end offset.
static ByteRange	fromStartOffset(long startOffset)	Construct a range from a start offset to the end of an object.

Methods inherited from class java.lang.Object

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

Method Detail

fromOffsetRange

public static ByteRange fromOffsetRange(long startOffset,
                                        long endOffset)

Construct a range from a start offset to an end offset.

Parameters:

startOffset - the (inclusive) start byte offset.

endOffset - the (inclusive) end byte offset.

Returns:

A ByteRange with the specified offsets.

Throws:

java.lang.IllegalArgumentException - if the start offset is less than 0, or the end offset is less than the start.

fromStartOffset

public static ByteRange fromStartOffset(long startOffset)

Construct a range from a start offset to the end of an object.

Parameters:

startOffset - The (inclusive) start byte offset.

Returns:

A ByteRange with the specified start offset.

Throws:

java.lang.IllegalArgumentException - if the start offset is less than 0

fromLastNBytes

public static ByteRange fromLastNBytes(long lastNBytes)

Construct a range that represents the last N bytes of an object.

Parameters:

lastNBytes - the number of bytes to read from the end of an object.

Returns:

A ByteRange representing the last N bytes of an objects.

Throws:

java.lang.IllegalArgumentException - if the number of bytes to read is less than or equal to 0.