Interface GroupBalancer

groupbalancer.go:24–39

GroupBalancer encapsulates the client side rebalancing logic.

// GroupBalancer encapsulates the client side rebalancing logic.
type GroupBalancer interface {
	// ProtocolName of the GroupBalancer
	ProtocolName() string

	// UserData provides the GroupBalancer an opportunity to embed custom
	// UserData into the metadata.
	//
	// Will be used by JoinGroup to begin the consumer group handshake.
	//
	// See https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol#AGuideToTheKafkaProtocol-JoinGroupRequest
	UserData() ([]byte, error)

	// DefineMemberships returns which members will be consuming
	// which topic partitions
	AssignGroups(members []GroupMember, partitions []Partition) GroupMemberAssignments
}

// RangeGroupBalancer groups consumers by partition
//