io.aeron.driver

Class TaggedMulticastFlowControl

java.lang.Object

io.aeron.driver.AbstractMinMulticastFlowControl

io.aeron.driver.TaggedMulticastFlowControl

All Implemented Interfaces:

FlowControl

Direct Known Subclasses:

PreferredMulticastFlowControl

public class TaggedMulticastFlowControl
extends AbstractMinMulticastFlowControl

Minimum multicast sender flow control strategy only for tagged members identified by a receiver tag or ASF key.

Flow control is set to minimum of tracked tagged receivers.

Tracking of tagged receivers is done as long as they continue to send Status Messages. Once SMs stop, the receiver tracking for that receiver will timeout after a given number of nanoseconds.

Field Summary

Fields

Modifier and Type	Field and Description
static String	FC_PARAM_VALUE URI param value to identify this FlowControl strategy.

Constructor Summary

Constructors

Constructor and Description
TaggedMulticastFlowControl()

Method Summary

Modifier and Type	Method and Description
long	onStatusMessage(StatusMessageFlyweight flyweight, InetSocketAddress receiverAddress, long senderLimit, int initialTermId, int positionBitsToShift, long timeNs) Update the sender flow control strategy based on a status message from the receiver.

Methods inherited from class io.aeron.driver.AbstractMinMulticastFlowControl

groupMinSize, groupTag, hasGroupTag, hasRequiredReceivers, initialize, onIdle, processStatusMessage, receiverTimeoutNs

Methods inherited from class java.lang.Object

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

Field Detail

FC_PARAM_VALUE

public static final String FC_PARAM_VALUE

URI param value to identify this FlowControl strategy.

See Also:

Constant Field Values

Constructor Detail

TaggedMulticastFlowControl

public TaggedMulticastFlowControl()

Method Detail

onStatusMessage

public long onStatusMessage(StatusMessageFlyweight flyweight,
                            InetSocketAddress receiverAddress,
                            long senderLimit,
                            int initialTermId,
                            int positionBitsToShift,
                            long timeNs)

Update the sender flow control strategy based on a status message from the receiver.

Parameters:

flyweight - over the status message received.

receiverAddress - of the receiver.

senderLimit - the current sender position limit.

initialTermId - for the term buffers.

positionBitsToShift - in use for the length of each term buffer.

timeNs - current time (in nanoseconds).

Returns:

the new position limit to be employed by the sender.