Package io.camunda.zeebe.dispatcher

Interface FragmentHandler

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface FragmentHandler

Consume fragments from the buffer.

Note that the handler is not aware of fragment batches.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	CONSUME_FRAGMENT_RESULT	fragment consumed successfully *
static final int	FAILED_FRAGMENT_RESULT	fragment consumed with failure *
static final int	POSTPONE_FRAGMENT_RESULT	fragment not consumed *

Method Summary

Modifier and Type	Method	Description
int	onFragment(org.agrona.DirectBuffer buffer, int offset, int length, int streamId, boolean isMarkedFailed)	Consume the message from the given buffer.

Field Details

CONSUME_FRAGMENT_RESULT

static final int CONSUME_FRAGMENT_RESULT

fragment consumed successfully *

See Also:

• Constant Field Values

POSTPONE_FRAGMENT_RESULT

static final int POSTPONE_FRAGMENT_RESULT

fragment not consumed *

See Also:

• Constant Field Values

FAILED_FRAGMENT_RESULT

static final int FAILED_FRAGMENT_RESULT

fragment consumed with failure *

See Also:

• Constant Field Values

Method Details

onFragment

int onFragment(org.agrona.DirectBuffer buffer,
 int offset,
 int length,
 int streamId,
 boolean isMarkedFailed)

Consume the message from the given buffer.

Parameters:

buffer - the buffer which contains the message

offset - the message offset (i.e. the start position of the message in the buffer)

length - the message length

streamId - the fragments stream id

isMarkedFailed - true if a handler consumed this message previously with failure (i.e. result was FAILED_FRAGMENT_RESULT).

Returns:

the consume result which should be one of CONSUME_FRAGMENT_RESULT, FAILED_FRAGMENT_RESULT or POSTPONE_FRAGMENT_RESULT.