leaderelector

package
v1.16.0-beta10 Latest Latest
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Published: Sep 21, 2023 License: Apache-2.0 Imports: 5 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func IsDisabled added in v1.12.32

func IsDisabled() bool

IsDisabled returns true if leader election is disabled using an environment variable

func NewIdentity

func NewIdentity(elected <-chan struct{}) *identityImpl

Types

type ElectionConfig

type ElectionConfig struct {
	// The name of the component
	Id string
	// The namespace where the component is running
	Namespace string
	// Callback function that is executed when the current component becomes leader
	OnStartedLeading func(c context.Context)
	// Callback function that is executed when the current component stops leading
	OnStoppedLeading func()
	// Callback function that is executed when a new leader is elected
	OnNewLeader func(leaderId string)
}

ElectionConfig is the set of properties that can be used to configure leader elections

type ElectionFactory

type ElectionFactory interface {
	// StartElection begins leader election and returns the Identity of the current component
	StartElection(ctx context.Context, config *ElectionConfig) (Identity, error)
}

An ElectionFactory is an implementation for running a leader election

type Identity

type Identity interface {
	// IsLeader returns true if the current component is the leader, false otherwise
	IsLeader() bool

	// Elected returns the channel that will be signaled when the current component is elected the leader
	Elected() <-chan struct{}
}

Identity contains leader election information about the current component

type LeaderStartupAction added in v1.12.28

type LeaderStartupAction struct {
	// contains filtered or unexported fields
}

func NewLeaderStartupAction added in v1.12.28

func NewLeaderStartupAction(identity Identity) *LeaderStartupAction

func (*LeaderStartupAction) GetAction added in v1.12.28

func (a *LeaderStartupAction) GetAction() func() error

func (*LeaderStartupAction) SetAction added in v1.12.28

func (a *LeaderStartupAction) SetAction(action func() error)

func (*LeaderStartupAction) WatchElectionResults added in v1.12.28

func (a *LeaderStartupAction) WatchElectionResults(ctx context.Context)

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