events

Documentation

Overview

Package events defines the structures used for events relating directly to individual topology elements, like keyspaces, shards, and tablets.

Index

• type ExternalVitessClusterChange
• type KeyspaceChange
  • func (kc *KeyspaceChange) Syslog() (syslog.Priority, string)
• type MetadataChange
• type ShardChange
  • func (sc *ShardChange) Syslog() (syslog.Priority, string)
• type TabletChange
  • func (tc *TabletChange) Syslog() (syslog.Priority, string)

Types

type ExternalVitessClusterChange

type ExternalVitessClusterChange struct {
	ClusterName           string
	ExternalVitessCluster *topodatapb.ExternalVitessCluster
	Status                string
}

ExternalVitessClusterChange is an event that describes changes to a vitess cluster.

type KeyspaceChange

type KeyspaceChange struct {
	KeyspaceName string
	Keyspace     *topodatapb.Keyspace
	Status       string
}

KeyspaceChange is an event that describes changes to a keyspace.

func (*KeyspaceChange) Syslog

func (kc *KeyspaceChange) Syslog() (syslog.Priority, string)

Syslog writes the event to syslog.

type MetadataChange

type MetadataChange struct {
	Key    string
	Status string
}

MetadataChange is an event that describes changes to topology metadata

type ShardChange

type ShardChange struct {
	KeyspaceName string
	ShardName    string
	Shard        *topodatapb.Shard
	Status       string
}

ShardChange is an event that describes changes to a shard.

func (*ShardChange) Syslog

func (sc *ShardChange) Syslog() (syslog.Priority, string)

Syslog writes the event to syslog.

type TabletChange

type TabletChange struct {
	Tablet topodatapb.Tablet
	Status string
}

TabletChange is an event that describes changes to a tablet's topo record. It is triggered when the CURRENT process changes ANY tablet's record. It is NOT triggered when a DIFFERENT process changes THIS tablet's record. To be notified when THIS tablet's record changes, even if it was changed by a different process, listen for go/vt/tabletmanager/events.StateChange.

func (*TabletChange) Syslog

func (tc *TabletChange) Syslog() (syslog.Priority, string)

Syslog writes the event to syslog.