com.hp.of.lib

Class FlowUtils

java.lang.Object

com.hp.of.lib.FlowUtils

public class FlowUtils
extends Object

Provides useful utilities regarding flow messages.

Author:

Simon Hunt

Constructor Summary

Constructors

Constructor and Description
FlowUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static int	flowKey(MBodyFlowStats f) Computes and returns a unique key for a flow, based on the table ID (ignored for 1.0), priority, and match fields.
static int	flowKey(OfmFlowMod f) Computes and returns a unique key for a flow, based on the table ID (ignored for 1.0), priority, and match fields.
static boolean	sameFlow(MBodyFlowStats flowA, MBodyFlowStats flowB) Returns true if the specified FlowStats structures represent the same flow.

Methods inherited from class java.lang.Object

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

Constructor Detail

FlowUtils

public FlowUtils()

Method Detail

sameFlow

public static boolean sameFlow(MBodyFlowStats flowA,
               MBodyFlowStats flowB)

Returns true if the specified FlowStats structures represent the same flow. This is determined by examining the protocol version, table ID, priority, and match; if each of these are equal, it is the same flow.

Parameters:

flowA - the first flow

flowB - the second flow

Returns:

true if the structures represent the same flow; false otherwise

Throws:

NullPointerException - if either parameter is null

flowKey

public static int flowKey(MBodyFlowStats f)

Computes and returns a unique key for a flow, based on the table ID (ignored for 1.0), priority, and match fields.

Parameters:

f - the flow

Returns:

the key

Throws:

NullPointerException - if f is null

flowKey

public static int flowKey(OfmFlowMod f)

Computes and returns a unique key for a flow, based on the table ID (ignored for 1.0), priority, and match fields.

Parameters:

f - the flow

Returns:

the key

Throws:

NullPointerException - if f is null