cluster

Documentation

Index

• Constants
• Variables
• type Metadata
  • func GetTestClusterMetadata(enableGlobalDomain bool, isMasterCluster bool) Metadata
  • func NewMetadata(enableGlobalDomain dynamicconfig.BoolPropertyFn, ...) Metadata

Constants

const (
	// TestCurrentClusterInitialFailoverVersion is initial failover version for current cluster
	TestCurrentClusterInitialFailoverVersion = int64(0)
	// TestAlternativeClusterInitialFailoverVersion is initial failover version for alternative cluster
	TestAlternativeClusterInitialFailoverVersion = int64(1)
	// TestFailoverVersionIncrement is failover version increment used for test
	TestFailoverVersionIncrement = int64(10)
	// TestCurrentClusterName is current cluster used for test
	TestCurrentClusterName = "active"
	// TestAlternativeClusterName is alternative cluster used for test
	TestAlternativeClusterName = "standby"
)

Variables

var (
	// TestAllClusterNames is the all cluster names used for test
	TestAllClusterNames = []string{TestCurrentClusterName, TestAlternativeClusterName}
	// TestAllClusterFailoverVersions is the same as above, juse convinent for test mocking
	TestAllClusterFailoverVersions = map[string]int64{
		TestCurrentClusterName:     TestCurrentClusterInitialFailoverVersion,
		TestAlternativeClusterName: TestAlternativeClusterInitialFailoverVersion,
	}
)

Types

type Metadata

type Metadata interface {
	// IsGlobalDomainEnabled whether the global domain is enabled,
	// this attr should be discarded when cross DC is made public
	IsGlobalDomainEnabled() bool
	// IsMasterCluster whether current cluster is master cluster
	IsMasterCluster() bool
	// GetNextFailoverVersion return the next failover version for domain failover
	GetNextFailoverVersion(string, int64) int64
	// IsVersionFromSameCluster return true if 2 version are used for the same cluster
	IsVersionFromSameCluster(version1 int64, version2 int64) bool
	// GetMasterClusterName return the master cluster name
	GetMasterClusterName() string
	// GetCurrentClusterName return the current cluster name
	GetCurrentClusterName() string
	// GetAllClusterFailoverVersions return the all cluster name -> corresponding initial failover version
	GetAllClusterFailoverVersions() map[string]int64
	// ClusterNameForFailoverVersion return the corresponding cluster name for a given failover version
	ClusterNameForFailoverVersion(failoverVersion int64) string
}

Metadata provides information about clusters

func GetTestClusterMetadata

func GetTestClusterMetadata(enableGlobalDomain bool, isMasterCluster bool) Metadata

GetTestClusterMetadata return an cluster metadata instance, which is initialized

func NewMetadata

func NewMetadata(enableGlobalDomain dynamicconfig.BoolPropertyFn, failoverVersionIncrement int64,
	masterClusterName string, currentClusterName string, clusterInitialFailoverVersions map[string]int64) Metadata

NewMetadata create a new instance of Metadata